login: uvm_fault(0xfffff7006e83e3e0, 0x98, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff81f5e008 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80002a29ebb0
gsbase 0xffff80002999dff0 kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff81f5e008
Starting stack trace...
panic(ffffffff834f0132) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002a29eb00) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff80003c4274f0,fffff7006b5de370,ffff80002a29ece0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690
sys_futimes(ffff80003c4274f0,ffff80002a29ee30,ffff80002a29ed80) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2732
syscall(ffff80002a29ee30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a29ee30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa5a393b7c30, count: 250
End of stack trace.
WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0
Stopped at alltraps_kern_meltdown+0xb8: movl %ebx,%gs:0x688
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*462697 2908 0 0x1044 0 1K syz-executor
496262 74413 0 0 0 0 syz-executor
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copyout() at copyout+0x64
exec_process_vmcmds(ffff80003c427258,ffff80002a2d1ab0) at exec_process_vmcmds+0xef sys/kern/exec_subr.c:139
sys_execve(ffff80003c427258,ffff80002a2d1f70,ffff80002a2d1ec0) at sys_execve+0xd6d sys/kern/kern_exec.c:492
syscall(ffff80002a2d1f70) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2d1f70) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a2bd651d7a0, 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{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffff7006e83e3e0, 0x98, 0, 1) -> e
ddb{1}> trace
alltraps_kern_meltdown() at alltraps_kern_meltdown+0xb8
copyout() at copyout+0x64
exec_process_vmcmds(ffff80003c427258,ffff80002a2d1ab0) at exec_process_vmcmds+0xef sys/kern/exec_subr.c:139
sys_execve(ffff80003c427258,ffff80002a2d1f70,ffff80002a2d1ec0) at sys_execve+0xd6d sys/kern/kern_exec.c:492
syscall(ffff80002a2d1f70) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2d1f70) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a2bd651d7a0, count: -6
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80002a2d1840
rbx 0
rdx 0
rcx 0xffff80003c427258
rax 0x2a
r8 0xffff80002a2d1770
r9 0
r10 0xd9679855a56226bc
r11 0xe4cbb182131972a5
r12 0
r13 0
r14 0x24a0 __ALIGN_SIZE+0x14a0
r15 0xffff800001600000
rip 0xffffffff8342520b alltraps_kern_meltdown+0xb8
cs 0x8
rflags 0x246
rsp 0xffff80002a2d17c0
ss 0x10
alltraps_kern_meltdown+0xb8: movl %ebx,%gs:0x688
ddb{1}> show proc
PROC (syz-executor) tid=462697 pid=2908 tcnt=1 stat=onproc
flags process=1044<INEXEC,PPWAIT,SINGLEEXIT> proc=0
runpri=86, usrpri=86, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0xffff80003c427258 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c4274f0,0xffff80003c426808
process=0xffff80002ebe3050 user=0xffff80002a2cd000, vmspace=0xfffff7006e83e998
estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
* 2908 462697 51559 0 7 0x1044 syz-executor
14883 58180 65742 0 2 0 syz-executor
14883 192248 65742 0 2 0x4000000 syz-executor
14883 484884 65742 0 2 0x4000000 syz-executor
69924 447531 57903 0 2 0 syz-executor
69924 334498 57903 0 3 0x4000000 vmmaplk syz-executor
69924 496740 57903 0 3 0x4000080 fsleep syz-executor
74413 496262 48797 0 7 0 syz-executor
74413 168304 48797 0 2 0x4000000 syz-executor
74413 211025 48797 0 3 0x4000000 sbar syz-executor
15398 240725 5157 0 2 0x2 syz-executor
54032 426992 16645 0 3 0x80 nanoslp syz-executor
54032 24514 16645 0 3 0x4000080 lockf syz-executor
54032 508955 16645 0 3 0x4000080 fsleep syz-executor
51559 228270 5157 0 3 0x82 ppwait syz-executor
65742 159472 5157 0 3 0x82 nanoslp syz-executor
12785 302402 0 0 3 0x14280 nfsidl nfsio
19457 490408 0 0 3 0x14280 nfsidl nfsio
21864 303867 0 0 3 0x14280 nfsidl nfsio
61089 390274 0 0 3 0x14280 nfsidl nfsio
65192 78386 0 0 3 0x14280 nfsidl nfsio
74472 29445 0 0 3 0x14280 nfsidl nfsio
68324 447936 0 0 3 0x14280 nfsidl nfsio
64819 452160 0 0 3 0x14280 nfsidl nfsio
53961 160629 0 0 3 0x14280 nfsidl nfsio
53160 235721 0 0 3 0x14280 nfsidl nfsio
43648 501495 0 0 3 0x14280 nfsidl nfsio
299 248625 0 0 3 0x14280 nfsidl nfsio
66783 325392 0 0 3 0x14280 nfsidl nfsio
77279 367473 0 0 3 0x14280 nfsidl nfsio
11348 474022 0 0 3 0x14280 nfsidl nfsio
60506 250147 0 0 3 0x14280 nfsidl nfsio
31518 99911 0 0 3 0x14280 nfsidl nfsio
31190 365603 0 0 3 0x14280 nfsidl nfsio
37019 429272 0 0 3 0x14280 nfsidl nfsio
97123 215065 0 0 3 0x14280 nfsidl nfsio
51433 497845 21223 0 3 0x3000 suspend syz-executor
51433 101277 21223 0 3 0x4081000 inode syz-executor
51433 84603 21223 0 3 0x4081000 inode syz-executor
42736 507434 1 0 3 0x100083 ttyin getty
16645 353608 5157 0 3 0x82 nanoslp syz-executor
21223 104978 5157 0 3 0x82 wait syz-executor
57903 397279 5157 0 3 0x82 nanoslp syz-executor
48797 160898 5157 0 3 0x82 nanoslp syz-executor
5157 370842 1 0 2 0x2 syz-executor
44951 136951 1 74 3 0x1100092 bpf pflogd
39777 385710 1 73 3 0x1100090 kqread syslogd
85481 499266 0 0 3 0x14200 bored smr
24507 379367 0 0 2 0x14200 zerothread
48564 244968 0 0 3 0x14200 aiodoned aiodoned
99127 67425 0 0 3 0x14200 syncer update
30054 36904 0 0 3 0x14200 cleaner cleaner
92711 348006 0 0 3 0x14200 reaper reaper
16437 437228 0 0 3 0x14200 pgdaemon pagedaemon
72684 399126 0 0 3 0x14200 bored viomb
39624 30954 0 0 3 0x40014200 acpi0 acpi0
23399 163748 0 0 3 0x40014200 idle1
88733 332851 0 0 3 0x14200 bored softnet1
62871 111582 0 0 3 0x14200 netlock softnet0
28075 250836 0 0 3 0x14200 smrbar systqmp
84438 368960 0 0 3 0x14200 bored systq
38382 173920 0 0 3 0x14200 tmoslp softclockmp
92827 345749 0 0 3 0x40014200 tmoslp softclock
73752 438054 0 0 3 0x40014200 idle0
1 487831 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{1}> show all locks
Process 2908 (syz-executor) thread 0xffff80003c427258 (462697)
exclusive rwlock vmmaplk r = 0 (0xfffff7006e83ea98)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413
#2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
#3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5 kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283
#6 kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528
#7 alltraps_kern_meltdown+0x7b
#8 copyout+0x64
#9 exec_process_vmcmds+0xef sys/kern/exec_subr.c:139
#10 sys_execve+0xd6d sys/kern/kern_exec.c:492
#11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#12 Xsyscall+0x128
Process 69924 (syz-executor) thread 0xffff80002a223c98 (447531)
exclusive rwlock vmmaplk r = 0 (0xfffff7006f37e8a8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413
#2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
#3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
Process 74413 (syz-executor) thread 0xffff80003c4274f0 (211025)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83b13a80)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
#1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
#2 Xsyscall+0x128
Process 51433 (syz-executor) thread 0xffff8000fffef240 (101277)
exclusive rrwlock inode r = 0 (0xfffff7006ee9f6e0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vget+0x2a2 sys/kern/vfs_subr.c:686
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x16bd sys/ufs/ufs/ufs_lookup.c:573
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_