uvm_fault(0xffffffff83aba540, 0xffff8000276f2e48, 0, 2) -> d
kernel: page fault trap, code=2
Stopped at ffs2_balloc+0x1864: movq %r15,0(%rax,%rbx,8)
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*100678 60229 0 0x2000 0x4080000 0K syz-executor
160083 81230 0 0x10000002 0x1 1 syz-executor
ffs2_balloc(fffffd806cd42020,754000,4000,fffffd80097fd548,2,ffff80002a2447a8) at ffs2_balloc+0x1864 sys/ufs/ffs/ffs_balloc.c:691
ffs_write(ffff80002a244830) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd80607b7b30,ffff80002a2449e8,7,fffffd80097fd548) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
vn_write(fffffd806f31bbe8,ffff80002a2449e8,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:414
dofilewritev(ffff8000fffeed10,7,ffff80002a2449e8,0,ffff80002a244aa0) at dofilewritev+0x2bd sys/kern/sys_generic.c:384
sys_write(ffff8000fffeed10,ffff80002a244b50,ffff80002a244aa0) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80002a244b50) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a244b50) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa8144fc1460, count: 7
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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xffffffff83aba540, 0xffff8000276f2e48, 0, 2) -> d
ddb{0}> trace
ffs2_balloc(fffffd806cd42020,754000,4000,fffffd80097fd548,2,ffff80002a2447a8) at ffs2_balloc+0x1864 sys/ufs/ffs/ffs_balloc.c:691
ffs_write(ffff80002a244830) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd80607b7b30,ffff80002a2449e8,7,fffffd80097fd548) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
vn_write(fffffd806f31bbe8,ffff80002a2449e8,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:414
dofilewritev(ffff8000fffeed10,7,ffff80002a2449e8,0,ffff80002a244aa0) at dofilewritev+0x2bd sys/kern/sys_generic.c:384
sys_write(ffff8000fffeed10,ffff80002a244b50,ffff80002a244aa0) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80002a244b50) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a244b50) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa8144fc1460, count: -8
ddb{0}> show registers
rdi 0
rsi 0x80000 acpi_pdirpa+0x6be71
rbp 0xffff80002a244750
rbx 0x1c9
rdx 0xffff800001625480
rcx 0xffff8000fffeed10
rax 0xffff8000276f2000
r8 0x100000 acpi_pdirpa+0xebe71
r9 0
r10 0x366580f7dcef5b6b
r11 0xd1315103209e6902
r12 0x2
r13 0xfffffd806cd42020
r14 0xfffffd805e28a000
r15 0x3d218 acpi_pdirpa+0x29089
rip 0xffffffff8193d4e4 ffs2_balloc+0x1864
cs 0x8
rflags 0x10202 __ALIGN_SIZE+0xf202
rsp 0xffff80002a2445d0
ss 0x10
ffs2_balloc+0x1864: movq %r15,0(%rax,%rbx,8)
ddb{0}> show proc
PROC (syz-executor) tid=100678 pid=60229 tcnt=3 stat=onproc
flags process=2000<SINGLEUNWIND> proc=4080000<SUSPSINGLE,THREAD>
runpri=83, usrpri=83, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0xffff8000fffefca0 scnt=1 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000fffefca0,0xffff80003c40d798
process=0xffff80003c4721d8 user=0xffff80002a23f000, vmspace=0xfffffd806e860998
estcpu=33, cpticks=17, pctcpu=0.6, user=0, sys=17, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
35180 374627 47895 0 2 0 syz-executor
35180 108010 47895 0 3 0x4000080 fsleep syz-executor
84038 276674 28580 0 2 0 syz-executor
84038 134239 28580 0 3 0x4000080 fsleep syz-executor
93314 39566 19815 0 3 0 vmmaplk syz-executor
93314 343074 19815 0 3 0x4000080 fsleep syz-executor
93314 356641 19815 0 2 0x4000000 syz-executor
55675 469948 554 0 2 0 syz-executor
55675 257899 554 0 3 0x4000080 fsleep syz-executor
46793 464085 72933 0 3 0x80 nanoslp syz-executor
46793 163814 72933 0 3 0x4000080 kqpoll syz-executor
46793 232617 72933 0 3 0x4000080 fsleep syz-executor
85466 357864 86910 60929 3 0x90 nanoslp syz-executor
85466 443971 86910 60929 3 0x4000090 netcon syz-executor
85466 14566 86910 60929 3 0x4000090 fsleep syz-executor
85466 441709 86910 60929 3 0x4000090 fsleep syz-executor
60229 363315 71239 0 3 0x2000 suspend syz-executor
*60229 100678 71239 0 7 0x4082000 syz-executor
60229 393630 71239 0 4 0x4082000 syz-executor
54479 95842 1 0 3 0x100083 ttyin getty
71239 470307 16895 0 3 0x82 nanoslp syz-executor
42990 132041 0 0 3 0x14200 acct acct
2241 271441 0 0 3 0x14280 nfsidl