issue-link js-issue-link" data-error-text="Failed to load title" data-id="2625480380" data-permission-text="Title is private" data-url="https://github.com/vpsfreecz/zfs/issues/1" data-hovercard-type="pull_request" data-hovercard-url="/vpsfreecz/zfs/pull/1/hovercard" href="https://github.com/vpsfreecz/zfs/pull/1">#1 (&zcw->zcw_lock){+.+.}-{4:4}: __mutex_lock+0xac/0x9e0 mutex_lock_nested+0x1b/0x20 zil_commit_waiter_link_lwb+0x51/0x1a0 [zfs] zil_commit_impl+0x12b0/0x1850 [zfs] zil_commit+0x43/0x60 [zfs] zpl_writepages+0xf8/0x1a0 [zfs] do_writepages+0x43/0xf0 __filemap_fdatawrite_range+0xd5/0x110 filemap_write_and_wait_range+0x4b/0xb0 zpl_fsync+0x4d/0xb0 [zfs] vfs_fsync_range+0x49/0x80 do_fsync+0x3d/0x70 __x64_sys_fsync+0x14/0x20 do_syscall_64+0x38/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xa9 -> #0 (&zilog->zl_lock){+.+.}-{4:4}: __lock_acquire+0x12b6/0x2480 lock_acquire+0xab/0x380 __mutex_lock+0xac/0x9e0 mutex_lock_nested+0x1b/0x20 zil_alloc_lwb+0x1df/0x3e0 [zfs] zil_lwb_write_issue+0x265/0x3f0 [zfs] zil_commit_impl+0x577/0x1850 [zfs] zil_commit+0x43/0x60 [zfs] zpl_writepages+0xf8/0x1a0 [zfs] do_writepages+0x43/0xf0 __filemap_fdatawrite_range+0xd5/0x110 filemap_write_and_wait_range+0x4b/0xb0 zpl_fsync+0x4d/0xb0 [zfs] vfs_fsync_range+0x49/0x80 do_fsync+0x3d/0x70 __x64_sys_fsync+0x14/0x20 do_syscall_64+0x38/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xa9 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&zcw->zcw_lock); lock(&zilog->zl_lock); lock(&zcw->zcw_lock); lock(&zilog->zl_lock); *** DEADLOCK *** 2 locks held by systemd-journal/5561: #0: (&zilog->zl_issuer_lock){+.+.}-{4:4}, at: zil_commit_impl+0x4dc... #1: (&zcw->zcw_lock){+.+.}-{4:4}, at: zil_commit_impl+0x52b/0x1850 Fixes openzfs#7038 Fixes openzfs#10440 Signed-off-by: Pavel Snajdr <snajpa@snajpa.net>

Commits

Commits on Sep 3, 2020

Fix zfs_fsync deadlock