syzbot


uvm_fault: proc_trampoline (2)

Status: upstream: reported on 2025/02/06 12:48
Reported-by: syzbot+6d88abc44e13bdeba3d5@syzkaller.appspotmail.com
First crash: 495d, last: 1h04m
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: proc_trampoline -1 6 628d 800d 0/3 auto-obsoleted due to no activity on 2024/12/25 08:30

Sample crash report:
login: uvm_fault(0xfffff7806f3b31f0, 0x98, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff824126a8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80002ef88630
gsbase 0xffff80002999dff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff824126a8
Starting stack trace...
panic(ffffffff834eb659) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002ef88580) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff80003c405250,fffff7805d560a20,ffff80002ef88760) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690
sys_futimes(ffff80003c405250,ffff80002ef888b0,ffff80002ef88800) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2732
syscall(ffff80002ef888b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002ef888b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7735eaa7bc0, count: 250
End of stack trace.
WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0
Stopped at      proc_trampoline+0xc7:   movl    $0,%gs:0x688
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*450658  52880      0           0          0    1  syz-executor
 228157  30520      0         0x2          0    0  syz-executor
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x7d8df5993e80, count: 14
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{1}> 
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ddb{1}> set $maxwidth = 0
ddb{1}> 

Crashes (2338):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/06/16 19:26 openbsd 3cf96d7d154c a3998659 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 16:13 openbsd 3cf96d7d154c a3998659 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 14:56 openbsd 3cf96d7d154c a3998659 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 13:39 openbsd 3cf96d7d154c a3998659 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 11:59 openbsd 3cf96d7d154c a3998659 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 10:37 openbsd 3cf96d7d154c a3998659 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 07:48 openbsd 3894b14b3da6 50bb0618 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 06:45 openbsd 3894b14b3da6 50bb0618 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 03:59 openbsd 3894b14b3da6 50bb0618 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 03:33 openbsd 3894b14b3da6 50bb0618 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 02:22 openbsd 3894b14b3da6 50bb0618 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/16 01:08 openbsd 3894b14b3da6 50bb0618 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 22:07 openbsd 3894b14b3da6 50bb0618 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 20:34 openbsd 3894b14b3da6 50bb0618 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 17:45 openbsd e83fdb494821 c700a26e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 16:42 openbsd e83fdb494821 c700a26e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 15:04 openbsd e83fdb494821 c700a26e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 13:36 openbsd e83fdb494821 c700a26e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 10:28 openbsd e83fdb494821 c700a26e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 08:55 openbsd e83fdb494821 c700a26e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 07:51 openbsd e83fdb494821 c700a26e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 03:58 openbsd 459bfe6c89ff 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 02:53 openbsd 459bfe6c89ff 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/15 01:27 openbsd 459bfe6c89ff 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 21:31 openbsd 459bfe6c89ff 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 20:03 openbsd 459bfe6c89ff 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 19:01 openbsd 459bfe6c89ff 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 17:59 openbsd 459bfe6c89ff 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 16:30 openbsd 459bfe6c89ff 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 14:47 openbsd 46410a2bd49b 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 12:38 openbsd 46410a2bd49b 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 09:41 openbsd 46410a2bd49b 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 09:08 openbsd 46410a2bd49b 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 07:42 openbsd 46410a2bd49b 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 05:31 openbsd 46410a2bd49b 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 03:41 openbsd 46410a2bd49b 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 02:27 openbsd 46410a2bd49b 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/14 00:27 openbsd 4abe9ebbcc38 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/13 23:13 openbsd 4abe9ebbcc38 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/13 20:57 openbsd 4abe9ebbcc38 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/13 18:40 openbsd 4abe9ebbcc38 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/13 17:40 openbsd 4abe9ebbcc38 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/13 15:28 openbsd 4abe9ebbcc38 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/13 14:16 openbsd 4abe9ebbcc38 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/06/13 11:37 openbsd b5f1a9c5e77f 4f06757f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/21 11:01 openbsd 668f1f05e71c e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: proc_trampoline
2025/02/06 12:47 openbsd 4a7e1005694f 1e1faf27 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
* Struck through repros no longer work on HEAD.