uvm_fault(0xfffffa8068aa2d78, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff823088f8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80003b3d2e30 gsbase 0xffff80002999dff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff823088f8 Starting stack trace... panic(ffffffff834ecfe1) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003b3d2d80) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003c4094e8,fffffa8062a6f460,ffff80003b3d2f60) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimes(ffff80003c4094e8,ffff80003b3d30b0,ffff80003b3d3000) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2733 syscall(ffff80003b3d30b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b3d30b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc36dd264790, 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 *514573 21052 0 0 0 1 syz-executor 153345 98714 0 0 0 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7190a119bb20, 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffa8068aa2d78, 0x98, 0, 1) -> e ddb{1}> show kasan No such command ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7190a119bb20, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c3e9a10 rbx 0 rdx 0 rcx 0xffff80003c4087f0 rax 0x2a r8 0xffff80003c3e9940 r9 0x1 r10 0x52c5e48e7c318297 r11 0xc0b445729124ed8c r12 0 r13 0xffffffff82497f88 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff823fc4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c3e9990 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=514573 pid=21052 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c409780,0xffff80003c408a98 process=0xffff80003b3d79e0 user=0xffff80003c3e4000, vmspace=0xfffffa8068aa2b90 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *21052 514573 87742 0 7 0 0 syz-executor 21052 384823 87742 0 3 0 0x4000000 biowait syz-executor 98714 153345 48969 0 7 0 0 syz-executor 98714 346452 48969 0 3 0 0x4000080 fsleep syz-executor 45092 8322 98886 60929 2 0x10 0 syz-executor 45092 321439 98886 60929 3 0x10 0x4000080 kqread syz-executor 93763 37968 8653 0 2 0 0 syz-executor 93763 32155 8653 0 3 0 0x4000000 sbar syz-executor 93763 213667 8653 0 3 0 0x4000080 fsleep syz-executor 93763 227736 8653 0 2 0 0x4000000 syz-executor 84007 219857 13386 0 3 0 0x80 nanoslp syz-executor 84007 87610 13386 0 3 0 0x4000080 fifow syz-executor 84007 384335 13386 0 3 0 0x4000080 fsleep syz-executor 10677 305089 24848 60929 3 0x10 0x80 nanoslp syz-executor 10677 344948 24848 60929 3 0x10 0x4000080 netcon syz-executor 10677 334703 24848 60929 3 0x10 0x4000080 fsleep syz-executor 10677 253391 24848 60929 3 0x10 0x4000080 fsleep syz-executor 1899 3990 10022 0 3 0 0x80 nanoslp syz-executor 1899 192568 10022 0 3 0 0x4000080 kqsel syz-executor 1899 502233 10022 0 3 0 0x4000080 fsleep syz-executor 48969 220777 56956 0 3 0x2 0x80 nanoslp syz-executor 84859 425923 56956 0 3 0x2 0x80 wait syz-executor 24848 3314 56956 0 3 0x2 0x80 nanoslp syz-executor 87742 366389 56956 0 3 0x2 0x80 nanoslp syz-executor 10022 310066 56956 0 3 0x2 0x80 nanoslp syz-executor 8653 40119 56956 0 3 0x2 0x80 nanoslp syz-executor 13386 165578 56956 0 3 0x2 0x80 nanoslp syz-executor 98886 424872 56956 0 3 0x2 0x80 nanoslp syz-executor 56956 213636 21244 0 3 0x2 0x80 kqread syz-executor 21244 123533 35293 0 3 0x100002 0x88 sigsusp ksh 35293 312740 70598 0 3 0x10 0x88 kqread sshd-session 70598 196927 17672 0 3 0x12 0x80 kqread sshd-session 3853 117552 1 0 3 0x100003 0x80 ttyin getty 17672 28812 1 0 3 0 0x88 kqread sshd 48509 68852 58254 74 3 0x1100012 0x80 bpf pflogd 58254 428094 1 0 3 0 0x80 sbwait pflogd 21555 138202 6763 73 3 0x1100010 0x80 kqread syslogd 6763 26887 1 0 3 0x100002 0x80 sbwait syslogd 31624 222353 1 0 3 0x100000 0x80 kqread resolvd 16729 103892 61952 77 3 0x100012 0x80 kqread dhcpleased 9232 374882 61952 77 3 0x100012 0x80 kqread dhcpleased 61952 445452 1 0 3 0 0x80 kqread dhcpleased 52512 370791 0 0 3 0x14000 0x200 bored smr 80620 237302 0 0 3 0x14000 0x200 pgzero zerothread 46790 197499 0 0 3 0x14000 0x200 aiodoned aiodoned 63159 137099 0 0 3 0x14000 0x200 syncer update 32282 489782 0 0 3 0x14000 0x200 cleaner cleaner 23173 371478 0 0 3 0x14000 0x200 reaper reaper 75594 412339 0 0 3 0x14000 0x200 pgdaemon pagedaemon 23455 511144 0 0 3 0x14000 0x200 bored viomb 53123 100513 0 0 3 0x14000 0x40000200 acpi0 acpi0 55179 76391 0 0 3 0x14000 0x40000200 idle1 24403 92113 0 0 3 0x14000 0x200 bored softnet1 27833 295224 0 0 3 0x14000 0x200 netlock softnet0 5486 197781 0 0 3 0x14000 0x200 smrbar systqmp 52190 142950 0 0 3 0x14000 0x200 bored systq 34753 420784 0 0 3 0x14000 0x200 tmoslp softclockmp 92028 274629 0 0 3 0x14000 0x40000200 tmoslp softclock 92494 461423 0 0 3 0x14000 0x40000200 idle0 1 28659 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 21052 (syz-executor) thread 0xffff80003c408a88 (384823) exclusive rrwlock inode r = 0 (0xfffffa8062b31b30) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1759 #8 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #9 VOP_MKNOD+0x101 sys/kern/vfs_vops.c:121 #10 domknodat+0x469 sys/kern/vfs_syscalls.c:1579 #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 exclusive rrwlock inode r = 0 (0xfffffa8062b318e0) #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 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1531 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 93763 (syz-executor) thread 0xffff80003c4094e8 (32155) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83abe180) #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 5486 (systqmp) thread 0xffff800045ffe7c8 (197781) shared rwlock systqmp r = 0 (0xffffffff8399e8a8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11071 12098K 12422K 166960K 12428 0 pcb 18 15K 16K 166960K 196 0 rtable 235 16K 17K 166960K 436 0 pf 38 18K 25K 166960K 85 0 ifaddr 41 7K 7K 166960K 56 0 ifgroup 59 2K 2K 166960K 73 0 sysctl 3 1K 9K 166960K 7 0 counters 72 37K 37K 166960K 86 0 ioctlops 0 0K 4K 166960K 1518 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1294 81K 82K 166960K 1473 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 18 65K 93K 166960K 301 0 sigio 0 0K 0K 166960K 1 0 proc 72 115K 180K 166960K 597 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 18 0 in_multi 88 5K 6K 166960K 120 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 483 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 252 159K 173K 166960K 4520 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 43 86K 106K 166960K 1513 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 10 0 NDP 15 0K 1K 166960K 37 0 temp 40 9114K 9130K 166960K 11741 0 kqueue 17 28K 28K 166960K 59 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 49 0 46 1 0 1 1 0 8 0 rtentry 176 124 0 23 6 0 6 6 0 8 0 unpcb 144 109 0 87 1 0 1 1 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 736 66 0 60 1 0 1 1 0 8 0 arp 136 20 0 4 1 0 1 1 0 8 0 inpcb 328 463 0 452 12 3 9 12 0 8 7 nd6 152 28 0 6 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 5 0 5 1 0 1 1 0 8 1 pfstscr 40 4 0 2 1 0 1 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 3 0 3 1 0 1 1 0 8 1 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 10 0 10 1 0 1 1 0 8 1 pfstitem 24 37 0 0 1 0 1 1 0 8 0 pfstkey 128 39 0 2 2 0 2 2 0 8 0 pfstate 448 37 0 1 5 0 5 5 0 8 0 pfrule 1360 22 0 16 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 537 0 44 31 0 31 31 0 8 0 art_table 40 538 0 44 5 0 5 5 0 8 0 art_node 32 124 0 32 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 1 0 1 1 0 8 0 semapl 72 9 0 0 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1816 0 346 93 0 93 93 0 8 0 ffsino 296 1816 0 346 114 0 114 114 0 8 0 nchpl 144 2213 0 506 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 1971 0 0 110 0 110 110 0 8 0 namei 1024 7151 0 7150 2 0 2 2 0 8 1 percpumem 16 59 0 7 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 0 1 1 0 8 1 kstatmem 264 41 0 10 3 0 3 3 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 7986 0 7985 10 2 8 8 1 8 7 plimitpl 152 107 0 89 1 0 1 1 0 8 0 sigapl 424 625 0 577 7 0 7 7 0 8 1 knotepl 120 556 0 0 17 0 17 17 0 8 0 kqueuepl 224 74 0 61 1 0 1 1 0 8 0 pipepl 344 147 0 118 3 0 3 3 0 8 0 fdescpl 528 609 0 577 3 0 3 3 0 8 0 filepl 160 2882 0 2650 16 0 16 16 0 8 5 lockfpl 104 48 0 43 1 0 1 1 0 8 0 lockfspl 48 27 0 22 1 0 1 1 0 8 0 sessionpl 144 64 0 55 1 0 1 1 0 8 0 pgrppl 48 73 0 56 1 0 1 1 0 8 0 ucredpl 104 332 0 317 1 0 1 1 0 8 0 zombiepl 144 578 0 577 1 0 1 1 0 8 0 processpl 1232 625 0 577 5 0 5 5 0 8 0 procpl 664 887 0 826 6 0 6 6 0 8 0 sockpl 752 626 0 590 17 6 11 17 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 16 0 16 16 0 8 1 mcl2k 2048 37 0 0 5 0 5 5 0 8 0 mextrefs 64 38 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 176 0 0 11 0 11 11 0 8 0 bufpl 272 2687 0 105 173 0 173 173 0 8 0 anonpl 32 5787 0 0 47 0 47 47 0 247 0 amapchunkpl 152 13383 0 12836 27 0 27 27 0 158 5 amappl16 200 1674 0 1648 6 3 3 5 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 473 0 471 1 0 1 1 0 8 0 amappl13 176 128 0 116 1 0 1 1 0 8 0 amappl12 168 870 0 839 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 75 0 61 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 1 0 1 0 8 0 amappl8 136 103 0 101 1 0 1 1 0 8 0 amappl7 128 160 0 147 1 0 1 1 0 8 0 amappl6 120 173 0 171 1 0 1 1 0 8 0 amappl5 112 115 0 105 1 0 1 1 0 8 0 amappl4 104 321 0 300 1 0 1 1 0 8 0 amappl3 96 2346 0 2236 3 0 3 3 0 8 0 amappl2 88 729 0 650 2 0 2 2 0 8 0 amappl1 80 11179 0 10572 15 0 15 15 0 8 2 amappl 88 3719 0 3539 5 0 5 5 0 92 0 uvmvnodes 80 101 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 609 0 577 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 609 0 577 1 0 1 1 0 8 0 vmmpekpl 168 6992 0 6959 3 0 3 3 0 8 0 vmmpepl 168 47229 0 45247 87 0 87 87 0 357 0 vmsppl 488 608 0 577 5 0 5 5 0 8 0 rwobjpl 80 16216 0 15157 24 0 24 24 0 8 1 pdppl 4096 1225 0 1154 101 28 73 85 0 8 2 pvpl 32 12645 0 0 102 0 102 102 0 265 0 pmappl 256 608 0 577 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 453 0 30 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8393dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83abd980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83abd980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff83abd980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83abd980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80003b3c16f0,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83abd980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83abd980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 uvm_fault(fffffa8068aa25d8,41ab0743000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff80003b3c1a90,41ab0743000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003b3c1a90) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 end trace frame: 0xffff80003b3c1b10, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8393dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83abd980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83abd980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff83abd980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83abd980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80003b3c16f0,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83abd980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83abd980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 uvm_fault(fffffa8068aa25d8,41ab0743000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650 upageflttrap(ffff80003b3c1a90,41ab0743000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003b3c1a90) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7da47b7e2420, count: -15 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7190a119bb20, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7190a119bb20, count: -1