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| author | Pavel Begunkov <asml.silence@gmail.com> | 2021-01-16 06:32:29 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-01-16 20:14:02 +0100 |
| commit | 6b393a1ff1746a1c91bd95cbb2d79b104d8f15ac (patch) | |
| tree | 9c59afb527d876e029ee18cfdabf0e9ee74b3eb8 /usr/gen_init_cpio.c | |
| parent | io_uring: iopoll requests should also wake task ->in_idle state (diff) | |
| download | linux-6b393a1ff1746a1c91bd95cbb2d79b104d8f15ac.tar.xz linux-6b393a1ff1746a1c91bd95cbb2d79b104d8f15ac.zip | |
io_uring: fix false positive sqo warning on flush
WARNING: CPU: 1 PID: 9094 at fs/io_uring.c:8884
io_disable_sqo_submit+0x106/0x130 fs/io_uring.c:8884
Call Trace:
io_uring_flush+0x28b/0x3a0 fs/io_uring.c:9099
filp_close+0xb4/0x170 fs/open.c:1280
close_fd+0x5c/0x80 fs/file.c:626
__do_sys_close fs/open.c:1299 [inline]
__se_sys_close fs/open.c:1297 [inline]
__x64_sys_close+0x2f/0xa0 fs/open.c:1297
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
io_uring's final close() may be triggered by any task not only the
creator. It's well handled by io_uring_flush() including SQPOLL case,
though a warning in io_disable_sqo_submit() will fallaciously fire by
moving this warning out to the only call site that matters.
Reported-by: syzbot+2f5d1785dc624932da78@syzkaller.appspotmail.com
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'usr/gen_init_cpio.c')
0 files changed, 0 insertions, 0 deletions