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* raid1: handle read error also in readonly modeTomasz Majchrzak2016-10-291-9/+10
| | | | | | | | | | | | | | | If write is the first operation on a disk and it happens not to be aligned to page size, block layer sends read request first. If read operation fails, the disk is set as failed as no attempt to fix the error is made because array is in auto-readonly mode. Similarily, the disk is set as failed for read-only array. Take the same approach as in raid10. Don't fail the disk if array is in readonly or auto-readonly mode. Try to redirect the request first and if unsuccessful, return a read error. Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
* raid5-cache: correct condition for empty metadata writeShaohua Li2016-10-291-1/+1
| | | | | | | | | As long as we recover one metadata block, we should write the empty metadata write. The original code could make recovery corrupted if only one meta is valid. Reported-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn> Signed-off-by: Shaohua Li <shli@fb.com>
* md: report 'write_pending' state when array in syncTomasz Majchrzak2016-10-251-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If there is a bad block on a disk and there is a recovery performed from this disk, the same bad block is reported for a new disk. It involves setting MD_CHANGE_PENDING flag in rdev_set_badblocks. For external metadata this flag is not being cleared as array state is reported as 'clean'. The read request to bad block in RAID5 array gets stuck as it is waiting for a flag to be cleared - as per commit c3cce6cda162 ("md/raid5: ensure device failure recorded before write request returns."). The meaning of MD_CHANGE_PENDING and MD_CHANGE_CLEAN flags has been clarified in commit 070dc6dd7103 ("md: resolve confusion of MD_CHANGE_CLEAN"), however MD_CHANGE_PENDING flag has been used in personality error handlers since and it doesn't fully comply with initial purpose. It was supposed to notify that write request is about to start, however now it is also used to request metadata update. Initially (in md_allow_write, md_write_start) MD_CHANGE_PENDING flag has been set and in_sync has been set to 0 at the same time. Error handlers just set the flag without modifying in_sync value. Sysfs array state is a single value so now it reports 'clean' when MD_CHANGE_PENDING flag is set and in_sync is set to 1. Userspace has no idea it is expected to take some action. Swap the order that array state is checked so 'write_pending' is reported ahead of 'clean' ('write_pending' is a misleading name but it is too late to rename it now). Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
* md/raid5: write an empty meta-block when creating log super-blockZhengyuan Liu2016-10-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If superblock points to an invalid meta block, r5l_load_log will set create_super with true and create an new superblock, this runtime path would always happen if we do no writing I/O to this array since it was created. Writing an empty meta block could avoid this unnecessary action at the first time we created log superblock. Another reason is for the corretness of log recovery. Currently we have bellow code to guarantee log revocery to be correct. if (ctx.seq > log->last_cp_seq + 1) { int ret; ret = r5l_log_write_empty_meta_block(log, ctx.pos, ctx.seq + 10); if (ret) return ret; log->seq = ctx.seq + 11; log->log_start = r5l_ring_add(log, ctx.pos, BLOCK_SECTORS); r5l_write_super(log, ctx.pos); } else { log->log_start = ctx.pos; log->seq = ctx.seq; } If we just created a array with a journal device, log->log_start and log->last_checkpoint should all be 0, then we write three meta block which are valid except mid one and supposed crash happened. The ctx.seq would equal to log->last_cp_seq + 1 and log->log_start would be set to position of mid invalid meta block after we did a recovery, this will lead to problems which could be avoided with this patch. Signed-off-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn> Signed-off-by: Shaohua Li <shli@fb.com>
* md/raid5: initialize next_checkpoint field before useZhengyuan Liu2016-10-251-0/+3
| | | | | | | | | | | No initial operation was done to this field when we load/recovery the log, it got assignment only when IO to raid disk was finished. So r5l_quiesce may use wrong next_checkpoint to reclaim log space, that would make reclaimable space calculation confused. Signed-off-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn> Signed-off-by: Shaohua Li <shli@fb.com>
* RAID10: ignore discard errorShaohua Li2016-10-251-2/+5
| | | | | | | | | | | | | | | | | This is the counterpart of raid10 fix. If a write error occurs, raid10 will try to rewrite the bio in small chunk size. If the rewrite fails, raid10 will record the error in bad block. narrow_write_error will always use WRITE for the bio, but actually it could be a discard. Since discard bio hasn't payload, write the bio will cause different issues. But discard error isn't fatal, we can safely ignore it. This is what this patch does. This issue should exist since discard is added, but only exposed with recent arbitrary bio size feature. Cc: Sitsofe Wheeler <sitsofe@gmail.com> Cc: stable@vger.kernel.org (v3.6) Signed-off-by: Shaohua Li <shli@fb.com>
* RAID1: ignore discard errorShaohua Li2016-10-251-2/+5
| | | | | | | | | | | | | | | | If a write error occurs, raid1 will try to rewrite the bio in small chunk size. If the rewrite fails, raid1 will record the error in bad block. narrow_write_error will always use WRITE for the bio, but actually it could be a discard. Since discard bio hasn't payload, write the bio will cause different issues. But discard error isn't fatal, we can safely ignore it. This is what this patch does. This issue should exist since discard is added, but only exposed with recent arbitrary bio size feature. Reported-and-tested-by: Sitsofe Wheeler <sitsofe@gmail.com> Cc: stable@vger.kernel.org (v3.6) Signed-off-by: Shaohua Li <shli@fb.com>
* Linux 4.9-rc2v4.9-rc2Linus Torvalds2016-10-241-1/+1
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* Merge tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifsLinus Torvalds2016-10-244-12/+13
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull UBI[FS] fixes from Richard Weinberger: "This contains fixes for issues in both UBI and UBIFS: - Fallout from the merge window, refactoring UBI code introduced some issues. - Fixes for an UBIFS readdir bug which can cause getdents() to busy loop for ever and a bug in the UBIFS xattr code" * tag 'upstream-4.9-rc2' of git://git.infradead.org/linux-ubifs: ubifs: Abort readdir upon error UBI: Fix crash in try_recover_peb() ubi: fix swapped arguments to call to ubi_alloc_aeb ubifs: Fix xattr_names length in exit paths ubifs: Rename ubifs_rename2
| * ubifs: Abort readdir upon errorRichard Weinberger2016-10-201-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If UBIFS is facing an error while walking a directory, it reports this error and ubifs_readdir() returns the error code. But the VFS readdir logic does not make the getdents system call fail in all cases. When the readdir cursor indicates that more entries are present, the system call will just return and the libc wrapper will try again since it also knows that more entries are present. This causes the libc wrapper to busy loop for ever when a directory is corrupted on UBIFS. A common approach do deal with corrupted directory entries is skipping them by setting the cursor to the next entry. On UBIFS this approach is not possible since we cannot compute the next directory entry cursor position without reading the current entry. So all we can do is setting the cursor to the "no more entries" position and make getdents exit. Cc: stable@vger.kernel.org Signed-off-by: Richard Weinberger <richard@nod.at>
| * UBI: Fix crash in try_recover_peb()Geert Uytterhoeven2016-10-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/mtd/ubi/eba.c: In function ‘try_recover_peb’: drivers/mtd/ubi/eba.c:744: warning: ‘vid_hdr’ is used uninitialized in this function The pointer vid_hdr is indeed not initialized, leading to a crash when it is dereferenced. Fix this by obtaining the pointer from the VID buffer, like is done everywhere else. Fixes: 3291b52f9ff0acc8 ("UBI: introduce the VID buffer concept") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Richard Weinberger <richard@nod.at>
| * ubi: fix swapped arguments to call to ubi_alloc_aebColin Ian King2016-10-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | Static analysis by CoverityScan detected the ec and pnum arguments are in the wrong order on a call to ubi_alloc_aeb. Swap the order to fix this. Fixes: 91f4285fe389a27 ("UBI: provide helpers to allocate and free aeb elements") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Richard Weinberger <richard@nod.at>
| * ubifs: Fix xattr_names length in exit pathsRichard Weinberger2016-10-201-0/+2
| | | | | | | | | | | | | | | | | | When the operation fails we also have to undo the changes we made to ->xattr_names. Otherwise listxattr() will report wrong lengths. Cc: stable@vger.kernel.org Signed-off-by: Richard Weinberger <richard@nod.at>
| * ubifs: Rename ubifs_rename2Richard Weinberger2016-10-201-6/+6
| | | | | | | | | | | | | | Since ->rename2 is gone, rename ubifs_rename2() to ubifs_rename(). Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Richard Weinberger <richard@nod.at>
* | Merge tag 'ext4_for_linus_stable' of ↵Linus Torvalds2016-10-249-50/+56
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 fixes from Ted Ts'o: "A few bug fixes and add some missing KERN_CONT annotations" * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: add missing KERN_CONT to a few more debugging uses fscrypto: lock inode while setting encryption policy ext4: correct endianness conversion in __xattr_check_inode() fscrypto: make XTS tweak initialization endian-independent ext4: do not advertise encryption support when disabled jbd2: fix incorrect unlock on j_list_lock ext4: super.c: Update logging style using KERN_CONT
| * | ext4: add missing KERN_CONT to a few more debugging usesJoe Perches2016-10-154-31/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recent commits require line continuing printks to always use pr_cont or KERN_CONT. Add these markings to a few more printks. Miscellaneaous: o Integrate the ea_idebug and ea_bdebug macros to use a single call to printk(KERN_DEBUG instead of 3 separate printks o Use the more common varargs macro style Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Andreas Dilger <adilger@dilger.ca>
| * | fscrypto: lock inode while setting encryption policyEric Biggers2016-10-151-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | i_rwsem needs to be acquired while setting an encryption policy so that concurrent calls to FS_IOC_SET_ENCRYPTION_POLICY are correctly serialized (especially the ->get_context() + ->set_context() pair), and so that new files cannot be created in the directory during or after the ->empty_dir() check. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Richard Weinberger <richard@nod.at> Cc: stable@vger.kernel.org
| * | ext4: correct endianness conversion in __xattr_check_inode()Eric Biggers2016-10-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It should be cpu_to_le32(), not le32_to_cpu(). No change in behavior. Found with sparse, and this was the only endianness warning in fs/ext4/. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
| * | fscrypto: make XTS tweak initialization endian-independentEric Biggers2016-10-131-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The XTS tweak (or IV) was initialized differently on little endian and big endian systems. Because the ciphertext depends on the XTS tweak, it was not possible to use an encrypted filesystem created by a little endian system on a big endian system and vice versa, even if they shared the same PAGE_SIZE. Fix this by always using little endian. This will break hypothetical big endian users of ext4 or f2fs encryption. However, all users we are aware of are little endian, and it's believed that "real" big endian users are unlikely to exist yet. So this might as well be fixed now before it's too late. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
| * | ext4: do not advertise encryption support when disabledEric Biggers2016-10-131-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sysfs file /sys/fs/ext4/features/encryption was present on kernels compiled with CONFIG_EXT4_FS_ENCRYPTION=n. This was misleading because such kernels do not actually support ext4 encryption. Therefore, only provide this file on kernels compiled with CONFIG_EXT4_FS_ENCRYPTION=y. Note: since the ext4 feature files are all hardcoded to have a contents of "supported", it really is the presence or absence of the file that is significant, not the contents (and this change reflects that). Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
| * | jbd2: fix incorrect unlock on j_list_lockTaesoo Kim2016-10-131-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When 'jh->b_transaction == transaction' (asserted by below) J_ASSERT_JH(jh, (jh->b_transaction == transaction || ... 'journal->j_list_lock' will be incorrectly unlocked, since the the lock is aquired only at the end of if / else-if statements (missing the else case). Signed-off-by: Taesoo Kim <tsgatesv@gmail.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Andreas Dilger <adilger@dilger.ca> Fixes: 6e4862a5bb9d12be87e4ea5d9a60836ebed71d28 Cc: stable@vger.kernel.org # 3.14+
| * | ext4: super.c: Update logging style using KERN_CONTJoe Perches2016-10-131-10/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recent commit require line continuing printks to use PR_CONT. Update super.c to use KERN_CONT and use vsprintf extension %pV to avoid a printk/vprintk/printk("\n") sequence as well. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pendingLinus Torvalds2016-10-248-75/+105
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SCSI target fixes from Nicholas Bellinger: "Here are the outstanding target-pending fixes for v4.9-rc2. This includes: - Fix v4.1.y+ reference leak regression with concurrent TMR ABORT_TASK + session shutdown. (Vaibhav Tandon) - Enable tcm_fc w/ SCF_USE_CPUID to avoid host exchange timeouts (Hannes) - target/user error sense handling fixes. (Andy + MNC + HCH) - Fix iscsi-target NOP_OUT error path iscsi_cmd descriptor leak (Varun) - Two EXTENDED_COPY SCSI status fixes for ESX VAAI (Dinesh Israni + Nixon Vincent) - Revert a v4.8 residual overflow change, that breaks sg_inq with small allocation lengths. There are a number of folks stress testing the v4.1.y regression fix in their environments, and more folks doing iser-target I/O stress testing atop recent v4.x.y code. There is also one v4.2.y+ RCU conversion regression related to explicit NodeACL configfs changes, that is still being tracked down" * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: target/tcm_fc: use CPU affinity for responses target/tcm_fc: Update debugging statements to match libfc usage target/tcm_fc: return detailed error in ft_sess_create() target/tcm_fc: print command pointer in debug message target: fix potential race window in target_sess_cmd_list_waiting() Revert "target: Fix residual overflow handling in target_complete_cmd_with_length" target: Don't override EXTENDED_COPY xcopy_pt_cmd SCSI status code target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE target: Re-add missing SCF_ACK_KREF assignment in v4.1.y iscsi-target: fix iscsi cmd leak iscsi-target: fix spelling mistake "Unsolicitied" -> "Unsolicited" target/user: Fix comments to not refer to data ring target/user: Return an error if cmd data size is too large target/user: Use sense_reason_t in tcmu_queue_cmd_ring
| * | | target/tcm_fc: use CPU affinity for responsesHannes Reinecke2016-10-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The libfc stack assigns exchange IDs based on the CPU the request was received on, so we need to send the responses via the same CPU. Otherwise the send logic gets confuses and responses will be delayed, causing exchange timeouts on the initiator side. Signed-off-by: Hannes Reinecke <hare@suse.com> Cc: stable@vger.kernel.org # 4.5+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target/tcm_fc: Update debugging statements to match libfc usageHannes Reinecke2016-10-211-11/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the debug statements to match those from libfc. Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target/tcm_fc: return detailed error in ft_sess_create()Hannes Reinecke2016-10-211-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Not every failure is due to out-of-memory; the ACLs might not be set, too. So return a detailed error code in ft_sess_create() instead of just a NULL pointer. Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target/tcm_fc: print command pointer in debug messageHannes Reinecke2016-10-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When allocating a new command we should add the pointer to the debug statements; that allows us to match this with other debug statements for handling data. Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target: fix potential race window in target_sess_cmd_list_waiting()Hannes Reinecke2016-10-211-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | target_sess_cmd_list_waiting() might hit on a condition where the kref for the command is already 0, but the destructor has not been called yet (or is stuck in waiting for a spin lock). Rather than leaving the command on the list we should explicitly remove it to avoid race issues later on. Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | Revert "target: Fix residual overflow handling in ↵Nicholas Bellinger2016-10-201-15/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | target_complete_cmd_with_length" This reverts commit c1ccbfe0311e2380a6d2dcb0714b36904f5d586f. Reverting this patch, as it incorrectly assumes the additional length for INQUIRY in target_complete_cmd_with_length() is SCSI allocation length, which breaks existing user-space code when SCSI allocation length is smaller than additional length. root@scsi-mq:~# sg_inq --len=4 -vvvv /dev/sdb found bsg_major=253 open /dev/sdb with flags=0x800 inquiry cdb: 12 00 00 00 04 00 duration=0 ms inquiry: pass-through requested 4 bytes (data-in) but got -28 bytes inquiry: pass-through can't get negative bytes, say it got none inquiry: got too few bytes (0) INQUIRY resid (32) should never exceed requested len=4 inquiry: failed requesting 4 byte response: Malformed response to SCSI command [resid=32] AFAICT the original change was not to address a specific host issue, so go ahead and revert to original logic for now. Cc: Douglas Gilbert <dgilbert@interlog.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Sumit Rai <sumitrai96@gmail.com> Cc: stable@vger.kernel.org # 4.8+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target: Don't override EXTENDED_COPY xcopy_pt_cmd SCSI status codeDinesh Israni2016-10-201-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch addresses a bug where a local EXTENDED_COPY WRITE or READ backend I/O request would always return SAM_STAT_CHECK_CONDITION, even if underlying xcopy_pt_cmd->se_cmd generated a different SCSI status code. ESX host environments expect to hit SAM_STAT_RESERVATION_CONFLICT for certain scenarios, and SAM_STAT_CHECK_CONDITION results in non-retriable status for these cases. Tested on v4.1.y with ESX v5.5u2+ with local IBLOCK backend copy. Reported-by: Nixon Vincent <nixon.vincent@calsoftinc.com> Tested-by: Nixon Vincent <nixon.vincent@calsoftinc.com> Cc: Nixon Vincent <nixon.vincent@calsoftinc.com> Tested-by: Dinesh Israni <ddi@datera.io> Signed-off-by: Dinesh Israni <ddi@datera.io> Cc: Dinesh Israni <ddi@datera.io> Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLENicholas Bellinger2016-10-203-6/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch addresses a bug where EXTENDED_COPY across multiple LUNs results in a CHECK_CONDITION when the source + destination are not located on the same physical node. ESX Host environments expect sense COPY_ABORTED w/ COPY TARGET DEVICE NOT REACHABLE to be returned when this occurs, in order to signal fallback to local copy method. As described in section 6.3.3 of spc4r22: "If it is not possible to complete processing of a segment because the copy manager is unable to establish communications with a copy target device, because the copy target device does not respond to INQUIRY, or because the data returned in response to INQUIRY indicates an unsupported logical unit, then the EXTENDED COPY command shall be terminated with CHECK CONDITION status, with the sense key set to COPY ABORTED, and the additional sense code set to COPY TARGET DEVICE NOT REACHABLE." Tested on v4.1.y with ESX v5.5u2+ with BlockCopy across multiple nodes. Reported-by: Nixon Vincent <nixon.vincent@calsoftinc.com> Tested-by: Nixon Vincent <nixon.vincent@calsoftinc.com> Cc: Nixon Vincent <nixon.vincent@calsoftinc.com> Tested-by: Dinesh Israni <ddi@datera.io> Signed-off-by: Dinesh Israni <ddi@datera.io> Cc: Dinesh Israni <ddi@datera.io> Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target: Re-add missing SCF_ACK_KREF assignment in v4.1.yNicholas Bellinger2016-10-201-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a regression in >= v4.1.y code where the original SCF_ACK_KREF assignment in target_get_sess_cmd() was dropped upstream in commit 054922bb, but the series for addressing TMR ABORT_TASK + LUN_RESET with fabric session reinstatement in commit febe562c20 still depends on this code in transport_cmd_finish_abort(). The regression manifests itself as a se_cmd->cmd_kref +1 leak, where ABORT_TASK + LUN_RESET can hang indefinately for a specific I_T session for drivers using SCF_ACK_KREF, resulting in hung kthreads. This patch has been verified with v4.1.y code. Reported-by: Vaibhav Tandon <vst@datera.io> Tested-by: Vaibhav Tandon <vst@datera.io> Cc: Vaibhav Tandon <vst@datera.io> Cc: stable@vger.kernel.org # 4.1+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | iscsi-target: fix iscsi cmd leakVarun Prakash2016-10-201-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If iscsi-target receives NOP OUT with ITT and TTT set to 0xffffffff it allocates iscsi_cmd but does not free the cmd, so free iscsi_cmd in this case. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | iscsi-target: fix spelling mistake "Unsolicitied" -> "Unsolicited"Colin Ian King2016-10-202-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trivial fix to spelling mistakes in pr_debug message and comments Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target/user: Fix comments to not refer to data ringAndy Grover2016-10-201-7/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We no longer use a ringbuffer for the data area, so this might cause confusion. Just call it the data area. Signed-off-by: Andy Grover <agrover@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target/user: Return an error if cmd data size is too largeAndy Grover2016-10-201-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Userspace should be implementing VPD B0 (Block Limits) to inform the initiator of max data size, but just in case we do get a too-large request, do what the spec says and return INVALID_CDB_FIELD. Make sure to unlock udev->cmdr_lock before returning. Signed-off-by: Andy Grover <agrover@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | target/user: Use sense_reason_t in tcmu_queue_cmd_ringAndy Grover2016-10-201-19/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using -ERROR-style returns, use sense_reason_t. This lets us remove tcmu_pass_op(), and return more correct sense values. Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* | | | Merge tag 'hwmon-for-linus-v4.9-rc2' of ↵Linus Torvalds2016-10-242-4/+6
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: "Couple of hwmon fixes: Fix a potential ERR_PTR dereference in max31790 driver, and handle temperature readings below 0 in adm9240 driver" * tag 'hwmon-for-linus-v4.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (max31790) potential ERR_PTR dereference hwmon: (adm9240) handle temperature readings below 0
| * | | | hwmon: (max31790) potential ERR_PTR dereferenceDan Carpenter2016-10-171-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We should only dereference "data" after we check if it is an error pointer. Fixes: 54187ff9d766 ('hwmon: (max31790) Convert to use new hwmon registration API') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
| * | | | hwmon: (adm9240) handle temperature readings below 0Chris Packham2016-10-171-3/+3
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike the temperature thresholds the temperature data is a 9-bit signed value. This allows and additional 0.5 degrees of precision on the reading but makes handling negative values slightly harder. In order to have sign-extension applied correctly the 9-bit value is stored in the upper bits of a signed 16-bit value. When presenting this in sysfs the value is shifted and scaled appropriately. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* | | | Merge tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmiLinus Torvalds2016-10-249-5/+560
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull IPMI updates from Corey Minyard: "A small bug fix and a new driver for acting as an IPMI device. I was on vacation during the merge window (a long vacation) but this is a bug fix that should go in and a new driver that shouldn't hurt anything. This has been in linux-next for a month or so" * tag 'for-linus-4.9-2' of git://git.code.sf.net/p/openipmi/linux-ipmi: ipmi: fix crash on reading version from proc after unregisted bmc ipmi/bt-bmc: remove redundant return value check of platform_get_resource() ipmi/bt-bmc: add a dependency on ARCH_ASPEED ipmi: Fix ioremap error handling in bt-bmc ipmi: add an Aspeed BT IPMI BMC driver
| * | | | ipmi: fix crash on reading version from proc after unregisted bmcXie XiuQi2016-10-031-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I meet a crash, which could be reproduce: 1) while true; do cat /proc/ipmi/0/version; done 2) modprobe -rv ipmi_si ipmi_msghandler ipmi_devintf [82761.021137] IPMI BT: req2rsp=5 secs retries=2 [82761.034524] ipmi device interface [82761.222218] ipmi_si ipmi_si.0: Found new BMC (man_id: 0x0007db, prod_id: 0x0001, dev_id: 0x01) [82761.222230] ipmi_si ipmi_si.0: IPMI bt interface initialized [82903.922740] BUG: unable to handle kernel NULL pointer dereference at 00000000000002d4 [82903.930952] IP: [<ffffffffa030d9e8>] smi_version_proc_show+0x18/0x40 [ipmi_msghandler] [82903.939220] PGD 86693a067 PUD 865304067 PMD 0 [82903.943893] Thread overran stack, or stack corrupted [82903.949034] Oops: 0000 [#1] SMP [82903.983091] Modules linked in: ipmi_si(-) ipmi_msghandler binfmt_misc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ... [82904.057285] pps_core scsi_transport_sas dm_mod vfio_iommu_type1 vfio xt_sctp nf_conntrack_proto_sctp nf_nat_proto_sctp nf_nat nf_conntrack sctp libcrc32c [last unloaded: ipmi_devintf] [82904.073169] CPU: 37 PID: 28089 Comm: cat Tainted: GF O ---- ------- 3.10.0-327.28.3.el7.x86_64 #1 [82904.083373] Hardware name: Huawei RH2288H V3/BC11HGSA0, BIOS 3.22 05/16/2016 [82904.090592] task: ffff880101cc2e00 ti: ffff880369c54000 task.ti: ffff880369c54000 [82904.098414] RIP: 0010:[<ffffffffa030d9e8>] [<ffffffffa030d9e8>] smi_version_proc_show+0x18/0x40 [ipmi_msghandler] [82904.109124] RSP: 0018:ffff880369c57e70 EFLAGS: 00010203 [82904.114608] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000024688470 [82904.121912] RDX: fffffffffffffff4 RSI: ffffffffa0313404 RDI: ffff8808670ce200 [82904.129218] RBP: ffff880369c57e70 R08: 0000000000019720 R09: ffffffff81204a27 [82904.136521] R10: ffff88046f803300 R11: 0000000000000246 R12: ffff880662399700 [82904.143828] R13: 0000000000000001 R14: ffff880369c57f48 R15: ffff8808670ce200 [82904.151128] FS: 00007fb70c9ca740(0000) GS:ffff88086e340000(0000) knlGS:0000000000000000 [82904.159557] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [82904.165473] CR2: 00000000000002d4 CR3: 0000000864c0c000 CR4: 00000000003407e0 [82904.172778] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [82904.180084] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [82904.187385] Stack: [82904.189573] ffff880369c57ee0 ffffffff81204f1a 00000000122a2427 0000000001426000 [82904.197392] ffff8808670ce238 0000000000010000 0000000000000000 0000000000000fff [82904.205198] 00000000122a2427 ffff880862079600 0000000001426000 ffff880369c57f48 [82904.212962] Call Trace: [82904.219667] [<ffffffff81204f1a>] seq_read+0xfa/0x3a0 [82904.224893] [<ffffffff8124ce2d>] proc_reg_read+0x3d/0x80 [82904.230468] [<ffffffff811e102c>] vfs_read+0x9c/0x170 [82904.235689] [<ffffffff811e1b7f>] SyS_read+0x7f/0xe0 [82904.240816] [<ffffffff81649209>] system_call_fastpath+0x16/0x1b [82904.246991] Code: 30 a0 e8 0c 6f ef e0 5b 5d c3 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 8b 47 78 55 48 c7 c6 04 34 31 a0 48 89 e5 48 8b 40 50 <0f> b6 90 d4 02 00 00 31 c0 89 d1 83 e2 0f c0 e9 04 0f b6 c9 e8 [82904.267710] RIP [<ffffffffa030d9e8>] smi_version_proc_show+0x18/0x40 [ipmi_msghandler] [82904.276079] RSP <ffff880369c57e70> [82904.279734] CR2: 00000000000002d4 [82904.283731] ---[ end trace a69e4328b49dd7c4 ]--- [82904.328118] Kernel panic - not syncing: Fatal exception Reading versin from /proc need bmc device struct available. So in this patch we move add/remove_proc_entries between ipmi_bmc_register and ipmi_bmc_unregister. Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
| * | | | ipmi/bt-bmc: remove redundant return value check of platform_get_resource()Wei Yongjun2016-09-301-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove unneeded error handling on the result of a call to platform_get_resource() when the value is passed to devm_ioremap_resource(). Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Corey Minyard <cminyard@mvista.com>
| * | | | ipmi/bt-bmc: add a dependency on ARCH_ASPEEDCédric Le Goater2016-09-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Corey Minyard <cminyard@mvista.com>
| * | | | ipmi: Fix ioremap error handling in bt-bmcJoel Stanley2016-09-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | devm_ioremap_resource returns ERR_PTR so we can't check for NULL. Signed-off-by: Joel Stanley <joel@jms.id.au> Acked-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Corey Minyard <cminyard@mvista.com>
| * | | | ipmi: add an Aspeed BT IPMI BMC driverAlistair Popple2016-09-308-1/+561
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a simple device driver to expose the iBT interface on Aspeed SOCs (AST2400 and AST2500) as a character device. Such SOCs are commonly used as BMCs (BaseBoard Management Controllers) and this driver implements the BMC side of the BT interface. The BT (Block Transfer) interface is used to perform in-band IPMI communication between a host and its BMC. Entire messages are buffered before sending a notification to the other end, host or BMC, that there is data to be read. Usually, the host emits requests and the BMC responses but the specification provides a mean for the BMC to send SMS Attention (BMC-to-Host attention or System Management Software attention) messages. For this purpose, the driver introduces a specific ioctl on the device: 'BT_BMC_IOCTL_SMS_ATN' that can be used by the system running on the BMC to signal the host of such an event. The device name defaults to '/dev/ipmi-bt-host' Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Joel Stanley <joel@jms.id.au> [clg: - checkpatch fixes - added a devicetree binding documentation - replace 'bt_host' by 'bt_bmc' to reflect that the driver is the BMC side of the IPMI BT interface - renamed the device to 'ipmi-bt-host' - introduced a temporary buffer to copy_{to,from}_user - used platform_get_irq() - moved the driver under drivers/char/ipmi/ but kept it as a misc device - changed the compatible cell to "aspeed,ast2400-bt-bmc" ] Signed-off-by: Cédric Le Goater <clg@kaod.org> Acked-by: Arnd Bergmann <arnd@arndb.de> [clg: - checkpatch --strict fixes - removed the use of devm_iounmap, devm_kfree in cleanup paths - introduced an atomic-t to limit opens to 1 - introduced a mutex to protect write/read operations] Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Corey Minyard <cminyard@mvista.com>
* | | | | Merge branch 'timers-urgent-for-linus' of ↵Linus Torvalds2016-10-226-2/+299
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer updates from Thomas Gleixner: "This updates contains: - A revert which addresses a boot failure on ARM Sun5i platforms - A new clocksource driver, which has been delayed beyond rc1 due to an interrupt driver issue which was unearthed by this driver. The debugging of that issue and the discussion about the proper solution made this driver miss the merge window. There is no point in delaying it for a full cycle as it completes the basic mainline support for the new JCore platform and does not create any risk outside of that platform" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init" clocksource: Add J-Core timer/clocksource driver of: Add J-Core timer bindings
| * | | | | Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init"Chen-Yu Tsai2016-10-201-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | struct clocksource is also used by the clk notifier callback, to unregister and re-register the clocksource with a different clock rate. clocksource_mmio_init does not pass back a pointer to the struct used, and the clk notifier callback assumes that the struct clocksource in struct sun5i_timer_clksrc is valid. This results in a kernel NULL pointer dereference when the hstimer clock is changed: Unable to handle kernel NULL pointer dereference at virtual address 00000004 [<c03a4678>] (clocksource_unbind) from [<c03a46d4>] (clocksource_unregister+0x2c/0x44) [<c03a46d4>] (clocksource_unregister) from [<c0a6f350>] (sun5i_rate_cb_clksrc+0x34/0x3c) [<c0a6f350>] (sun5i_rate_cb_clksrc) from [<c035ea50>] (notifier_call_chain+0x44/0x84) [<c035ea50>] (notifier_call_chain) from [<c035edc0>] (__srcu_notifier_call_chain+0x44/0x60) [<c035edc0>] (__srcu_notifier_call_chain) from [<c035edf4>] (srcu_notifier_call_chain+0x18/0x20) [<c035edf4>] (srcu_notifier_call_chain) from [<c0670174>] (__clk_notify+0x70/0x7c) [<c0670174>] (__clk_notify) from [<c06702c0>] (clk_propagate_rate_change+0xa4/0xc4) [<c06702c0>] (clk_propagate_rate_change) from [<c0670288>] (clk_propagate_rate_change+0x6c/0xc4) Revert the commit for now. clocksource_mmio_init can be made to pass back a pointer, but the code churn and usage of an inner struct might not be worth it. Fixes: 157dfadef832 ("clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init") Reported-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Chen-Yu Tsai <wens@csie.org> Cc: linux-sunxi@googlegroups.com Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20161018054918.26855-1-wens@csie.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | | | | clocksource: Add J-Core timer/clocksource driverRich Felker2016-10-204-0/+261
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At the hardware level, the J-Core PIT is integrated with the interrupt controller, but it is represented as its own device and has an independent programming interface. It provides a 12-bit countdown timer, which is not presently used, and a periodic timer. The interval length for the latter is programmable via a 32-bit throttle register whose units are determined by a bus-period register. The periodic timer is used to implement both periodic and oneshot clock event modes; in oneshot mode the interrupt handler simply disables the timer as soon as it fires. Despite its device tree node representing an interrupt for the PIT, the actual irq generated is programmable, not hard-wired. The driver is responsible for programming the PIT to generate the hardware irq number that the DT assigns to it. On SMP configurations, J-Core provides cpu-local instances of the PIT; no broadcast timer is needed. This driver supports the creation of the necessary per-cpu clock_event_device instances. A nanosecond-resolution clocksource is provided using the J-Core "RTC" registers, which give a 64-bit seconds count and 32-bit nanoseconds that wrap every second. The driver converts these to a full-range 32-bit nanoseconds count. Signed-off-by: Rich Felker <dalias@libc.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Link: http://lkml.kernel.org/r/b591ff12cc5ebf63d1edc98da26046f95a233814.1476393790.git.dalias@libc.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | | | | of: Add J-Core timer bindingsRich Felker2016-10-201-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Rich Felker <dalias@libc.org> Acked-by: Rob Herring <robh@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Link: http://lkml.kernel.org/r/8b107c292ed8cf8eed0fa283071fc8a930098628.1476393790.git.dalias@libc.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-07 22:42:33 +0100