On Sun 07-04-24 10:20:39, Yu Kuai wrote:
> Hi, Christian!
> Hi, Jan!
> +CC Gustavo
>
> While testing this set, I found that the branch vfs.all seems broken,
> xfstests report success while lots of BUG is reported in dmesg:
>
> [22709.079704] =============================================================================^M
> [22709.082404] BUG kmalloc-16 (Not tainted): Right Redzone overwritten^M
> [22709.084148] -----------------------------------------------------------------------------^M
> [22709.084148] ^M
> [22709.086784] 0xffff88817d52e7a0-0xffff88817d52e7a7 @offset=1952. First
> byte 0x0 instead of 0xcc^M
> [22709.089169] Allocated in do_handle_open+0x97/0x440 age=10 cpu=13
> pid=814795^M
> [22709.091158] __kmalloc+0x41d/0x5e0^M
> [22709.092153] do_handle_open+0x97/0x440^M
> [22709.093240] __x64_sys_open_by_handle_at+0x23/0x30^M
> [22709.094482] do_syscall_64+0xb1/0x210^M
> [22709.095316] entry_SYSCALL_64_after_hwframe+0x6c/0x74^M
> [22709.096414] Freed in kvfree+0x4c/0x60 age=43560 cpu=15 pid=813506^M
> [22709.097719] kfree+0x31c/0x530^M
> [22709.098396] kvfree+0x4c/0x60^M
> [22709.099048] ext4_mb_release+0x29c/0x570^M
> [22709.099901] ext4_put_super+0x17f/0x590^M
> [22709.100735] generic_shutdown_super+0xba/0x240^M
> [22709.101698] kill_block_super+0x22/0x70^M
> [22709.102525] ext4_kill_sb+0x2a/0x70^M
> [22709.103297] deactivate_locked_super+0x4f/0xe0^M
> [22709.104261] deactivate_super+0x81/0x90^M
> [22709.104876] cleanup_mnt+0xe0/0x1b0^M
> [22709.105419] __cleanup_mnt+0x1a/0x30^M
> [22709.105964] task_work_run+0x88/0x100^M
> [22709.106531] syscall_exit_to_user_mode+0x3cc/0x3e0^M
> [22709.107263] do_syscall_64+0xc5/0x210^M
> [22709.107820] entry_SYSCALL_64_after_hwframe+0x6c/0x74^M
>
> While digging this problem, I found that commit 1b43c4629756 ("fs:
> Annotate struct file_handle with __counted_by() and use struct_size()")
> might made a mistake, and I verified following patch can fix the
> problem.
Yep, this should have been fixed recently in VFS tree as well.
Honza
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
