diff options
| author | Dmitry Monakhov <dmonakhov@openvz.org> | 2013-03-02 23:08:46 +0100 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-03-02 23:08:46 +0100 |
| commit | df05c1b85a88888b92725ef27ba70086f38fb083 (patch) | |
| tree | ba25e9388be51f30fd464eea4c6f4f50eb384080 /fs | |
| parent | ext4: use percpu counter for extent cache count (diff) | |
| download | linux-df05c1b85a88888b92725ef27ba70086f38fb083.tar.xz linux-df05c1b85a88888b92725ef27ba70086f38fb083.zip | |
jbd2: fix ERR_PTR dereference in jbd2__journal_start
If start_this_handle() failed handle will be initialized
to ERR_PTR() and can not be dereferenced.
paging request at fffffffffffffff6
IP: [<ffffffff813c073f>] jbd2__journal_start+0x18f/0x290
PGD 200e067 PUD 200f067 PMD 0
Oops: 0000 [#1] SMP
Modules linked in: cpufreq_ondemand acpi_cpufreq freq_table mperf coretemp kvm_intel kvm crc32c_intel ghash_clmulni_intel microcode sg xhci_hcd button sd_mod crc_t10dif aesni_intel ablk_helper cryptd lrw aes_x86_64 xts gf128mul ahci libahci pata_acpi ata_generic dm_mirror dm_region_hash dm_log dm_mod
CPU 0 journal commit I/O error
Pid: 2694, comm: fio Not tainted 3.8.0-rc3+ #79 /DQ67SW
RIP: 0010:[<ffffffff813c073f>] [<ffffffff813c073f>] jbd2__journal_start+0x18f/0x290
RSP: 0018:ffff880233b8ba58 EFLAGS: 00010292
RAX: 00000000ffffffe2 RBX: ffffffffffffffe2 RCX: 0000000000000006
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff82128f48
RBP: ffff880233b8ba98 R08: 0000000000000000 R09: ffff88021440a6e0
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/jbd2/transaction.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index b7e2385c6e92..d6ee5aed56b1 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -382,7 +382,7 @@ handle_t *jbd2__journal_start(journal_t *journal, int nblocks, gfp_t gfp_mask, if (err < 0) { jbd2_free_handle(handle); current->journal_info = NULL; - handle = ERR_PTR(err); + return ERR_PTR(err); } handle->h_type = type; handle->h_line_no = line_no; |