kernel: protection fault trap, code=0 Stopped at sys_semop+0x352: movzwl 0x8(%rbx),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace sys_semop(ffff80002a360570,ffff800031fd4990,ffff800031fd48e0) at sys_semop+0x352 sys/kern/sysv_sem.c:622 syscall(ffff800031fd4990) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800031fd4990) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2ee51e3400, count: -3 ddb{1}> show registers rdi 0 rsi 0x87 rbp 0xffff800031fd48b0 rbx 0xdeafbeaddeafbead rdx 0 rcx 0xffff80002a360570 rax 0xffff8000299ddff0 r8 0x7f7fffffc000 r9 0x1 r10 0x3b2127931840e53a r11 0x48dbb3a3dbdf7ada r12 0x87 r13 0xfffffd8066d51070 r14 0xffff800031fd4990 r15 0x87 rip 0xffffffff825834e2 sys_semop+0x352 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800031fd47c0 ss 0x10 sys_semop+0x352: movzwl 0x8(%rbx),%r15d ddb{1}> show proc PROC (syz-executor) tid=465558 pid=75693 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a360d38,0xffff80002a361278 process=0xffff8000fffee1e0 user=0xffff800031fcf000, vmspace=0xfffffd805fd8c9b0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26261 172989 70735 0 2 0 syz-executor 75693 492126 6903 0 3 0x80 nanoslp syz-executor *75693 465558 6903 0 7 0x4000000 syz-executor 75693 324672 6903 0 3 0x4000080 fsleep syz-executor 75693 405329 6903 0 3 0x4000080 fsleep syz-executor 83046 363513 54813 0 2 0x10 syz-executor 83046 38017 54813 0 3 0x4000090 fsleep syz-executor 74818 524194 24667 0 2 0 syz-executor 74818 97639 24667 0 3 0x4000080 fsleep syz-executor 93144 125078 33355 0 3 0x3000 suspend syz-executor 93144 296705 33355 0 2 0x4081000 syz-executor 37810 29491 13577 0 3 0x2 biowait syz-executor 50382 328657 13577 0 2 0x2 syz-executor 66872 508984 0 0 3 0x14200 acct acct 17339 194972 0 0 3 0x14280 nfsidl nfsio 8496 57863 0 0 3 0x14280 nfsidl nfsio 87105 156990 0 0 3 0x14280 nfsidl nfsio 87556 70933 0 0 3 0x14280 nfsidl nfsio 49073 439742 0 0 3 0x14280 nfsidl nfsio 79173 315237 0 0 3 0x14280 nfsidl nfsio 74693 177692 0 0 3 0x14280 nfsidl nfsio 39725 505958 0 0 3 0x14280 nfsidl nfsio 78851 22163 0 0 3 0x14280 nfsidl nfsio 86096 237608 0 0 3 0x14280 nfsidl nfsio 14604 56696 0 0 3 0x14280 nfsidl nfsio 77042 422074 0 0 3 0x14280 nfsidl nfsio 90479 492840 0 0 3 0x14280 nfsidl nfsio 6928 137291 0 0 3 0x14280 nfsidl nfsio 12239 328249 0 0 3 0x14280 nfsidl nfsio 72167 216194 0 0 3 0x14280 nfsidl nfsio 52947 98139 0 0 3 0x14280 nfsidl nfsio 96396 388507 0 0 3 0x14280 nfsidl nfsio 44378 216000 0 0 3 0x14280 nfsidl nfsio 60719 62750 0 0 3 0x14280 nfsidl nfsio 70735 58594 13577 0 3 0x82 nanoslp syz-executor 24667 274031 13577 0 3 0x82 nanoslp syz-executor 33355 221019 13577 0 3 0x82 nanoslp syz-executor 6903 498877 13577 0 3 0x82 nanoslp syz-executor 54813 336841 13577 0 3 0x82 nanoslp syz-executor 18874 397793 13577 0 7 0x2 syz-executor 13577 349276 74826 0 2 0x2 syz-executor 74826 89456 97381 0 3 0x10008a sigsusp ksh 97381 269734 36704 0 3 0x98 kqread sshd-session 36704 55975 89232 0 3 0x92 kqread sshd-session 83359 344418 1 0 3 0x100083 ttyopn getty 89232 513744 1 0 3 0x88 kqread sshd 5248 437067 58534 74 3 0x1100092 bpf pflogd 58534 331836 1 0 3 0x80 sbwait pflogd 92803 512997 53358 73 3 0x1100090 kqread syslogd 53358 294403 1 0 3 0x100082 sbwait syslogd 38224 319377 1 0 3 0x100080 kqread resolvd 67632 98981 29203 77 3 0x100092 kqread dhcpleased 18632 479171 29203 77 3 0x100092 kqread dhcpleased 29203 115412 1 0 3 0x80 kqread dhcpleased 22446 440303 0 0 3 0x14200 bored smr 20492 105079 0 0 2 0x14200 zerothread 18857 88645 0 0 3 0x14200 aiodoned aiodoned 40980 487878 0 0 3 0x14200 syncer update 77409 88205 0 0 3 0x14200 cleaner cleaner 32733 165138 0 0 3 0x14200 reaper reaper 64329 126388 0 0 3 0x14200 pgdaemon pagedaemon 45210 479939 0 0 3 0x14200 bored viomb 5604 489245 0 0 3 0x40014200 acpi0 acpi0 74507 398674 0 0 3 0x40014200 idle1 5594 98026 0 0 3 0x14200 bored softnet1 67773 304773 0 0 3 0x14200 bored softnet0 49757 77272 0 0 3 0x14200 bored systqmp 9952 515539 0 0 3 0x14200 bored systq 88397 523987 0 0 3 0x14200 tmoslp softclockmp 92922 438665 0 0 3 0x40014200 tmoslp softclock 42552 323050 0 0 3 0x40014200 idle0 1 272757 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 75693 (syz-executor) thread 0xffff80002a360570 (465558) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838bc7c8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 malloc+0xe3 sys/kern/kern_malloc.c:175 #3 sys_semop+0x22f sys/kern/sysv_sem.c:-1 #4 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #5 Xsyscall+0x128 Process 93144 (syz-executor) thread 0xffff80002a361a30 (296705) exclusive rrwlock inode r = 0 (0xfffffd806c6a2900) #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:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 37810 (syz-executor) thread 0xffff80002a361500 (29491) exclusive rrwlock inode r = 0 (0xfffffd806f066d90) #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:159 #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_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806f0ba668) #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:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 50382 (syz-executor) thread 0xffff80003a009790 (328657) exclusive rwlock vmmaplk r = 0 (0xfffffd805fd8c6e0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5165 #3 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3746 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd8076e006d0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5165 #3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3737 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 Process 18874 (syz-executor) thread 0xffff8000ffffd4c8 (397793) exclusive rrwlock inode r = 0 (0xfffffd806dc72d80) #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:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11105 12098K 12300K 166960K 12806 0 pcb 18 16K 18K 166960K 167 0 rtable 232 9K 9K 166960K 524 0 pf 34 17K 21K 166960K 126 0 ifaddr 41 7K 8K 166960K 100 0 ifgroup 55 2K 2K 166960K 154 0 sysctl 4 1K 9K 166960K 15 0 counters 70 37K 38K 166960K 156 0 ioctlops 0 0K 4K 166960K 1658 0 iov 0 0K 24K 166960K 68 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1332 84K 85K 166960K 1973 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 19 137K 137K 166960K 46 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 905 0 sigio 0 0K 0K 166960K 47 0 proc 72 115K 164K 166960K 670 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 70 0 in_multi 97 7K 7K 166960K 157 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 337 1500K 1500K 166960K 337 0 exec 0 0K 1K 166960K 522 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 237 167K 194K 166960K 10307 0 UVM aobj 8 4K 4K 166960K 8 0 pinsyscall 41 82K 105K 166960K 2096 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 194 0 NDP 12 0K 2K 166960K 65 0 temp 54 8674K 8801K 166960K 37364 0 kqueue 13 20K 30K 166960K 183 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 185 0 182 3 2 1 3 0 8 0 rtentry 176 162 0 63 6 0 6 6 0 8 0 unpcb 144 518 0 500 6 2 4 4 0 8 3 syncache 336 6 0 6 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 227 0 220 4 3 1 4 0 8 0 arp 136 25 0 9 1 0 1 1 0 8 0 inpcb 328 1162 0 1151 20 10 10 12 0 8 8 nd6 152 35 0 8 2 0 2 2 0 8 0 pkpcb 40 10 0 10 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 1 1 1 0 8 1 ppxss 1192 28 0 28 2 1 1 1 0 8 1 pppxif 1504 8 0 8 1 0 1 1 0 8 1 pffrag 232 4 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 7 0 3 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 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 70 0 16 1 0 1 1 0 8 0 pfstkey 128 70 0 16 2 0 2 2 0 8 0 pfstate 448 70 0 16 6 0 6 6 0 8 0 pfrule 1344 24 0 19 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 699 0 255 32 3 29 31 0 8 0 art_table 40 701 0 255 5 0 5 5 0 8 0 art_node 32 162 0 75 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semupl 112 4 0 4 2 1 1 1 0 8 1 semapl 112 37 0 21 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 28 0 11 3 0 3 3 0 8 0 dino2pl 256 3147 0 1647 96 0 96 96 0 8 0 ffsino 296 3148 0 1647 118 0 118 118 0 8 0 nchpl 144 4385 0 2686 64 0 64 64 0 8 0 rtmask 32 3 0 3 2 1 1 1 0 8 1 vnodes 216 3423 0 0 191 0 191 191 0 8 0 namei 1024 15447 0 15445 3 2 1 2 0 8 0 percpumem 16 93 0 43 1 0 1 1 0 8 0 vcpupl 3968 1 0 0 1 0 1 1 0 8 0 vmpool 848 1 0 0 1 0 1 1 0 8 0 kstatmem 264 88 0 62 5 2 3 3 0 8 1 scsiplug 72 7 0 7 3 2 1 1 0 8 1 scxspl 216 17538 0 17537 11 9 2 8 1 8 1 plimitpl 152 291 0 273 1 0 1 1 0 8 0 sigapl 424 1233 0 1166 9 1 8 8 0 8 0 knotepl 120 526 0 0 16 0 16 16 0 8 0 kqueuepl 224 401 0 390 7 4 3 5 0 8 2 pipepl 344 256 0 229 9 1 8 9 0 8 5 fdescpl 528 1196 0 1166 3 0 3 3 0 8 0 filepl 160 7896 0 7677 22 7 15 19 0 8 4 lockfpl 104 380 0 378 1 0 1 1 0 8 0 lockfspl 48 134 0 132 1 0 1 1 0 8 0 sessionpl 144 27 0 18 1 0 1 1 0 8 0 pgrppl 48 50 0 33 1 0 1 1 0 8 0 ucredpl 104 1702 0 1688 1 0 1 1 0 8 0 zombiepl 144 1529 0 1528 1 0 1 1 0 8 0 processpl 1232 1233 0 1166 7 1 6 6 0 8 0 procpl 664 2633 0 2560 9 1 8 8 0 8 0 sosppl 176 17 0 17 2 1 1 1 0 8 1 sockpl 752 1893 0 1861 29 17 12 17 0 8 7 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 208 0 0 13 0 13 13 0 8 0 bufpl 280 7124 0 987 439 0 439 439 0 8 0 anonpl 32 10418 0 0 84 0 84 84 0 246 0 amapchunkpl 152 34183 0 33634 36 7 29 31 0 158 3 amappl16 200 3866 0 3801 22 11 11 19 0 8 6 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 40 0 40 1 1 0 1 0 8 0 amappl13 176 447 0 446 1 0 1 1 0 8 0 amappl12 168 1589 0 1549 3 0 3 3 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 87 0 73 1 0 1 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 28 0 25 1 0 1 1 0 8 0 amappl7 128 90 0 89 1 0 1 1 0 8 0 amappl6 120 305 0 292 1 0 1 1 0 8 0 amappl5 112 74 0 63 1 0 1 1 0 8 0 amappl4 104 472 0 442 1 0 1 1 0 8 0 amappl3 96 5905 0 5820 4 1 3 3 0 8 0 amappl2 88 1339 0 1264 3 0 3 3 0 8 0 amappl1 80 13312 0 12724 19 2 17 18 0 8 0 amappl 88 9385 0 9226 5 0 5 5 0 92 0 uvmvnodes 80 131 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 0 1 1 0 8 1 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 255 0 255 3 2 1 1 0 8 1 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 1196 0 1166 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1196 0 1166 1 0 1 1 0 8 0 vmmpekpl 168 11745 0 11694 3 0 3 3 0 8 0 vmmpepl 168 83279 0 81407 110 15 95 106 0 357 5 vmsppl 488 1195 0 1166 6 1 5 5 0 8 0 rwobjpl 80 24844 0 23749 30 3 27 29 0 8 0 pdppl 4096 2402 0 2333 112 39 73 86 0 8 4 pvpl 32 17133 0 0 140 1 139 139 0 265 0 pmappl 256 1196 0 1166 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 308 0 52 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff837eaff0) 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(ffffffff838bc5c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838bc5c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a2f0030,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838bc5c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838bc5c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff838bc5c0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 pool_get(ffffffff839ee858,9) at pool_get+0x27e sys/kern/subr_pool.c:591 ffs_vget(ffff800000c5a000,13401,ffff80002a2f04b8) at ffs_vget+0x104 sys/ufs/ffs/ffs_vfsops.c:1215 ffs_inode_alloc(fffffd806dc72ce0,41ed,fffffd80097fd1a0,ffff80002a2f04b8) at ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 ufs_mkdir(ffff80002a2f0520) at ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 VOP_MKDIR(fffffd8077225398,ffff80002a2f0680,ffff80002a2f06b0,ffff80002a2f05b0) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000ffffd4c8,ffffff9c,7a0f750e4aa0,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 syscall(ffff80002a2f0830) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2f0830) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a0f750e4b40, count: -16 ddb{0}> machine ddbcpu 1 Stopped at sys_semop+0x352: movzwl 0x8(%rbx),%r15d ddb{1}> trace sys_semop(ffff80002a360570,ffff800031fd4990,ffff800031fd48e0) at sys_semop+0x352 sys/kern/sysv_sem.c:622 syscall(ffff800031fd4990) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800031fd4990) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2ee51e3400, count: -3