uvm_fault: alltraps_kern_meltdown (2)

Status: upstream: reported on 2026/04/16 07:46
Reported-by: syzbot+742febd2e60866693d2b@syzkaller.appspotmail.com
First crash: 119d, last: 2h15m
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: alltraps_kern_meltdown -1 5 216d 367d 0/4 auto-obsoleted due to no activity on 2026/04/08 12:46

Sample crash report:
uvm_fault(0xffffee807dd858b8, 0x70, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff81183298 cs 8 rflags 10246 cr2 70 cpl 0 rsp ffff8000314b76d0
gsbase 0xffffffff838feff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff81183298
Starting stack trace...
panic(ffffffff834b8461) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff8000314b7620) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff80003b0dba28,ffff
ee806e43fc20,ffff8000314b77e0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691
sys_futimens(ffff80003b0dba28,ffff8000314b7920,ffff8000314b7870) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767
syscall(ffff8000314b7920) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff8000314b7920) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf51d138b5f0, count: 250
End of stack trace.

dump to dev 4,1 not possible
rebooting...
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000080000000 = 2048 MiB
CPUs found: 2     Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID 860ebdd0-427f-2be6-5726-fd56b385017a
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f2600: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
>> OpenBSD/amd64 BOOT 3.67
boot> set $lines = 0
set: syntax error
boot> set $maxwidth = 0
set: syntax error
boot> show panic
boot: illegal argument panic
boot> show kasan
boot> trace
boot> show registers
boot> show proc
boot> ps
boot> show all locks
boot> show malloc
boot> show all pools
boot> machine ddbcpu 0
machine: syntax error
boot> trace
boot> machine ddbcpu 1
machine: syntax error
boot> trace
boot> 

Crashes (31):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/13 07:37 openbsd a63ea9f8f0de 359b2492 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/13 00:49 openbsd a63ea9f8f0de 359b2492 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/12 19:07 openbsd 2610791609b5 ee03bfea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/12 16:15 openbsd 2610791609b5 ee03bfea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/12 12:48 openbsd 2610791609b5 ee03bfea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/12 10:55 openbsd 2610791609b5 ee03bfea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/12 09:08 openbsd a47f863e5cb3 f8d35649 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/12 03:32 openbsd a47f863e5cb3 f8d35649 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/12 03:29 openbsd a47f863e5cb3 f8d35649 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/12 02:22 openbsd a47f863e5cb3 f8d35649 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/12 00:24 openbsd a47f863e5cb3 f8d35649 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/11 19:38 openbsd 99858244924d 557a89d3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/11 18:22 openbsd 99858244924d 557a89d3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/11 10:43 openbsd 99858244924d 557a89d3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/11 05:29 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/11 04:45 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/11 02:39 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/11 00:49 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/11 00:45 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/11 00:18 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/10 22:06 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/10 20:50 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/10 19:03 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/10 16:39 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/08/10 16:11 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/10 13:34 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/10 10:23 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: alltraps_kern_meltdown
2026/08/10 09:59 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/06/11 16:25 openbsd 28cce1e713d0 d93a6ab6 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/05/13 23:09 openbsd ed5454cb43ec 340bcdf0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
2026/04/16 07:45 openbsd 2a36b3c3c2a3 1a086e7c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: alltraps_kern_meltdown
* Struck through repros no longer work on HEAD.