syzbot


uvm_fault: pvclock_get (2)

Status: upstream: reported on 2026/03/28 02:43
Reported-by: syzbot+3177d0e000d22a077fe0@syzkaller.appspotmail.com
First crash: 47d, last: 1h33m
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: pvclock_get -1 1 156d 156d 0/3 auto-obsoleted due to no activity on 2026/03/09 12:52

Sample crash report:
login: ˦uvm_fault(0xffffffff83a1e4e0, 0xffff800029ef5000, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      pvclock_get+0x53:       movl    0(%r15),%r12d
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
pvclock_get(ffffffff838d24f0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline]
pvclock_get(ffffffff838d24f0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333
nanouptime(ffff80002a847400) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline]
nanouptime(ffff80002a847400) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline]
nanouptime(ffff80002a847400) at nanouptime+0x61 sys/kern/kern_tc.c:217
tuagg_add_runtime() at tuagg_add_runtime+0x40 sys/kern/kern_resource.c:449
mi_switch() at mi_switch+0xb1 sys/kern/sched_bsd.c:372
ast(ffff80002a8474d0) at ast+0x13d mi_ast sys/sys/syscall_mi.h:252 [inline]
ast(ffff80002a8474d0) at ast+0x13d sys/arch/amd64/amd64/trap.c:747
Xsyscall() at Xsyscall+0x156
end of kernel
end trace frame: 0xc54bd6ef150, count: 9
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.
ddb> 
ddb> set $lines = 0
ddb> 

Crashes (29):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/14 21:53 openbsd 9f6962b18ef0 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/05/11 23:56 openbsd 9c5367037e8c 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/05/09 02:10 openbsd 34e7bded0e8b 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/05/08 20:52 openbsd 34e7bded0e8b 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/05/03 13:50 openbsd 3c6f8ccfe730 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/30 16:21 openbsd 2117c4c4e299 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/28 15:35 openbsd 6c5b951d135a 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/24 02:45 openbsd 179a5728e367 9cfb3ca7 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/23 09:54 openbsd 18dcbfb1f230 b10da5ec .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/22 09:47 openbsd 9a8e8d261fbe 0b6ab7ec .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/22 09:00 openbsd 9a8e8d261fbe 0b6ab7ec .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/22 02:56 openbsd 9a8e8d261fbe 0b6ab7ec .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/21 23:14 openbsd 9a8e8d261fbe 0b6ab7ec .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/21 15:27 openbsd 4470fcda88d1 9765efe0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/21 11:28 openbsd 4470fcda88d1 9765efe0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/21 06:50 openbsd 5ca82bba1a6e 1a086e7c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/19 14:17 openbsd 2fc67ad6b988 1a086e7c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/19 10:56 openbsd 2fc67ad6b988 1a086e7c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/19 09:57 openbsd a6d33878ee16 1a086e7c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/19 04:55 openbsd a6d33878ee16 1a086e7c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/19 00:26 openbsd a6d33878ee16 1a086e7c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/18 21:32 openbsd a6d33878ee16 1a086e7c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/15 20:27 openbsd 8928aa246822 1a086e7c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/13 03:28 openbsd 4ec71eeccea4 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/04/05 11:08 openbsd c9c58e023502 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/03/29 20:00 openbsd 7ab78e8bd090 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/03/29 19:55 openbsd 7ab78e8bd090 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/03/29 19:24 openbsd 8c0bc7d7b019 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
2026/03/28 02:43 openbsd f3ad7971a235 4b3d9a38 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: pvclock_get
* Struck through repros no longer work on HEAD.