Date: Thu, 20 Oct 2022 12:36:23 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: freebsd-stable List <stable@FreeBSD.org>, freebsd-fs <fs@FreeBSD.org> Subject: panic: condition seqc_in_modify not met, while replaying ZIL Message-ID: <93085f3c-4592-8f46-fadb-ba0ee2d2ffa9@FreeBSD.org>
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This happens on stable/13, custom kernel compiled with DEBUG_VFS_LOCKS, from
mid-September after an ungraceful reboot (unrelated crash). As far as I can see
in kgdb, both dvp and vp have v_seqc == 0.
VNASSERT failed: ({ seqc_t __seqc = (_vp->v_seqc); __builtin_expect((__seqc &
1), 0); }) not true at
/usr/home/avg/devel/freebsd-src-new/machines/trant/sys/kern/vfs_cache.c:2976
(cache_vop_rmdir)
0xfffff8004bc0bd58: type VDIR
usecount 1, writecount 0, refcount 1 seqc users 0 mountedhere 0
hold count flags ()
flags ()
lock type zfs: UNLOCKED
panic: condition seqc_in_modify(_vp->v_seqc) not met at
/usr/home/avg/devel/freebsd-src-new/machines/trant/sys/kern/vfs_cache.c:2976
(cache_vop_rmdir)
cpuid = 5
time = 1666250711
KDB: stack backtrace:
db_trace_self_wrapper() at 0xffffffff8061549b = db_trace_self_wrapper+0x2b/frame
0xfffffe01ce6c7090
kdb_backtrace() at 0xffffffff80942927 = kdb_backtrace+0x37/frame 0xfffffe01ce6c7140
vpanic() at 0xffffffff808f4fb4 = vpanic+0x184/frame 0xfffffe01ce6c71a0
panic() at 0xffffffff808f4d63 = panic+0x43/frame 0xfffffe01ce6c7200
cache_vop_rmdir() at 0xffffffff809b9b9f = cache_vop_rmdir+0xdf/frame
0xfffffe01ce6c7220
zfs_rmdir_() at 0xffffffff80391cff = zfs_rmdir_+0x1df/frame 0xfffffe01ce6c7290
zfs_rmdir() at 0xffffffff80391af8 = zfs_rmdir+0x48/frame 0xfffffe01ce6c7310
zfs_replay_remove() at 0xffffffff804fc53b = zfs_replay_remove+0x7b/frame
0xfffffe01ce6c7340
zil_replay_log_record() at 0xffffffff80508462 =
zil_replay_log_record+0x212/frame 0xfffffe01ce6c7490
zil_parse() at 0xffffffff80502f4b = zil_parse+0x5cb/frame 0xfffffe01ce6c76a0
zil_replay() at 0xffffffff805081d8 = zil_replay+0xd8/frame 0xfffffe01ce6c7700
zfsvfs_setup() at 0xffffffff8038f09d = zfsvfs_setup+0x24d/frame 0xfffffe01ce6c7930
zfs_mount() at 0xffffffff8038c9b2 = zfs_mount+0x652/frame 0xfffffe01ce6c7ad0
vfs_domount_first() at 0xffffffff809d0d66 = vfs_domount_first+0x216/frame
0xfffffe01ce6c7c00
vfs_domount() at 0xffffffff809cdd43 = vfs_domount+0x2d3/frame 0xfffffe01ce6c7d30
vfs_donmount() at 0xffffffff809ccb6f = vfs_donmount+0x81f/frame 0xfffffe01ce6c7dc0
sys_nmount() at 0xffffffff809cc318 = sys_nmount+0x108/frame 0xfffffe01ce6c7df0
amd64_syscall() at 0xffffffff80c31d16 = amd64_syscall+0x186/frame 0xfffffe01ce6c7f30
fast_syscall_common() at 0xffffffff80c0889b = fast_syscall_common+0xf8/frame
0xfffffe01ce6c7f30
--- syscall (378, FreeBSD ELF64, sys_nmount), rip = 0xb6aac9dd1a, rsp =
0xb6b538f468, rbp = 0xb6b538f4d0 ---
Uptime: 37s
Dumping 1426 out of 32644 MB: (CTRL-C to abort)
..2%..11%..21%..31%..41%..51%..61%..71%..81%..91%
--
Andriy Gapon
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