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witness: reversal: sbufsnd inode (3)

Status: upstream: reported on 2025/06/11 00:46
Reported-by: syzbot+33baec04e0ac2123f367@syzkaller.appspotmail.com
First crash: 226d, last: 1d14h
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd witness: reversal: sbufsnd inode (2) -1 19 289d 341d 0/3 auto-obsoleted due to no activity on 2025/05/28 20:57
openbsd witness: reversal: sbufsnd inode -1 4 459d 525d 0/3 auto-obsoleted due to no activity on 2025/01/18 21:43

Sample crash report:
witness: lock order reversal:
 1st 0xffff8000016997a8 sbufsnd (&so->so_snd.sb_lock)
 2nd 0xfffffd807286b938 inode (&ip->i_lock)
SYZFAIL: failed to send rpc
fd=3 want=392 sent=0 n=-1 (errno 32: Broken pipe)
uvn_flush: obj=0xfffffd806eaff828, offset=0x3fe000.  error during pageout.
uvn_flush: WARNING: changes to page may be lost!


OpenBSD/amd64 (ci-openbsd-multicore-6.us-central1-b.c.syzkaller.internal) (tty00)

login: show malloc
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
malloc() warning: unknown char in MALLOC_OPTIONS
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Crashes (39):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/22 05:38 openbsd 72d111245f15 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 03:29 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 03:23 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 03:02 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 03:00 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 02:40 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 02:32 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 02:19 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 01:42 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 00:18 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/22 00:09 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 23:44 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 23:17 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 23:10 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 22:11 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 21:28 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 21:09 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 20:40 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 20:24 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 20:23 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 20:15 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 20:03 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 19:49 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 19:13 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 19:07 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 18:59 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/21 18:56 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2026/01/20 05:16 openbsd deb62df5ff8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/12/23 04:00 openbsd 7a245af8e4c1 607f1549 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/11/08 10:47 openbsd f09b465a1938 4e1406b4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/11/03 18:27 openbsd 0214ec5c7fc4 e6c64ba8 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/10/25 11:01 openbsd 710ece6a621e c0460fcd .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/10/25 09:27 openbsd 710ece6a621e c0460fcd .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/10/24 12:17 openbsd f7635e2c043a c0460fcd .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/08/25 20:43 openbsd 4f8e478bcc72 bf27483f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/07/24 22:37 openbsd 24bd93804efe 3cda49cf .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/07/10 01:51 openbsd e91e1a12e0dd 956bd956 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/06/13 05:33 openbsd 97ee8abe534f 98683f8f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
2025/06/11 00:45 openbsd a3912f8462f6 5d7e17ca .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore witness: reversal: sbufsnd inode
* Struck through repros no longer work on HEAD.