syzbot


uvm_fault: VOP_LOCK (2)

Status: upstream: reported on 2024/04/16 15:33
Reported-by: syzbot+5eb5e269f7c81c767acc@syzkaller.appspotmail.com
First crash: 15d, last: 6d11h
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: VOP_LOCK 1 168d 168d 0/3 auto-obsoleted due to no activity on 2024/02/13 21:08

Sample crash report:
uvm_fault(0xfffffd80074a2810, 0x0, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      VOP_LOCK+0x6f:  movq    0(%rax),%r14
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*478237  81204      0   0x8000002          0    0  syz-executor.3
VOP_LOCK(fffffd807c712988,1) at VOP_LOCK+0x6f sys/kern/vfs_vops.c:515
vn_lock(fffffd807c712988,1) at vn_lock+0x85 sys/kern/vfs_vnops.c:564
vget(fffffd807c712988,1) at vget+0x1fd sys/kern/vfs_subr.c:676
ufs_ihashget(400,1fa96) at ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
ffs_vget(ffff8000006cf000,1fa96,ffff80002db34aa8) at ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1201
ufs_lookup() at ufs_lookup+0x1113 sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd805a6e30d8,ffff80002db34ef8,ffff80002db34f28) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002db34ec8) at vfs_lookup+0x6df sys/kern/vfs_lookup.c:566
namei(ffff80002db34ec8) at namei+0x56a sys/kern/vfs_lookup.c:250
vn_open(ffff80002db34ec8,30001,0) at vn_open+0x101 sys/kern/vfs_vnops.c:140
doopenat(ffff800030f66f98,ffffff9c,79ee6a941850,30000,0,ffff80002db35070) at doopenat+0x269 sys/kern/vfs_syscalls.c:1126
syscall(ffff80002db35120) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x79ee6a941350, count: 2
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Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/25 20:26 openbsd 8fa0fb927089 8bdc0f22 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: VOP_LOCK
2024/04/16 15:32 openbsd 25b30cac31a3 2338035c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: VOP_LOCK
* Struck through repros no longer work on HEAD.