Date: Thu, 10 Jul 2025 05:56:07 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 288127] Deadlock in vfs Message-ID: <bug-288127-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=288127 Bug ID: 288127 Summary: Deadlock in vfs Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: arrowd@FreeBSD.org Created attachment 262016 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=262016&action=edit procstat output On the fresh ( https://github.com/freebsd/freebsd-src/commit/f6e5bcd4716c2974c7ceb1fbbfc0ef8db8e13d8b ) CURRENT I started getting random processes to hang at random times. When the process hangs, `top` reports its state as [zfs]. Here is the procstat output for the hanged system state: https://termbin.com/o8sf (also attached). In that case the hanged processes were - yakuake - nextcloud - kalendarac - plasmashell - pulseaudio All of these processes are waiting on mi_switch+0x172 sleepq_switch+0x109 sleeplk+0x110 lockmgr_slock_hard+0x3c3 VOP_LOCK1_APV+0x2a _vn_lock+0x53 vfs_lookup+0x14c namei+0x35d kern_accessat+0x1c0 amd64_syscall+0x169 fast_syscall_common+0xf8 Interestingly, there is one more process waiting on this lock, but in the "select" state - xdg-desktop-portal: mi_switch+0x172 sleepq_switch+0x109 sleeplk+0x110 lockmgr_slock_hard+0x3c3 VOP_LOCK1_APV+0x2a _vn_lock+0x53 vfs_lookup+0x14c namei+0x35d vn_inotify_add_watch+0x1f5 VOP_INOTIFY_ADD_WATCH_APV+0x2a kern_inotify_add_watch+0x34a amd64_syscall+0x169 fast_syscall_common+0xf8 This made me think that recent inotify changes might be related to this hang. After the deadlock resolver kicked in I was able to print the location: https://github.com/freebsd/freebsd-src/blob/78935fa40eee14aab1c6de676a1017bcabdf5fa1/sys/kern/vfs_subr.c#L3384 -- You are receiving this mail because: You are the assignee for the bug.home | help
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