¹j¼õ¬|ÿ ž¨E1\…:kernel: protection fault trap, code=0 Stopped at sys_semop+0x3ae: movzwl 0x8(%rax,%rcx,4),%r15d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace sys_semop(ffff80002a7f4020,ffff80002a89f680,ffff80002a89f5d0) at sys_semop+0x3ae sys/kern/sysv_sem.c:620 syscall(ffff80002a89f680) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a89f680) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb1ef56f5950, count: -3 ddb> show registers rdi 0 rsi 0x1600 __ALIGN_SIZE+0x600 rbp 0xffff80002a89f5a0 rbx 0 rdx 0 rcx 0x8fd rax 0xdeaf4152deaf4152 r8 0x7f7fffffc000 r9 0 r10 0x8fd1432f47853d9b r11 0x8e4f9ebca7495697 r12 0xffff8000014d2004 r13 0x1600 __ALIGN_SIZE+0x600 r14 0xffff80002a89f680 r15 0x1600 __ALIGN_SIZE+0x600 rip 0xffffffff815f1d2e sys_semop+0x3ae cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a89f480 ss 0x10 sys_semop+0x3ae: movzwl 0x8(%rax,%rcx,4),%r15d ddb> show proc PROC (syz-executor) tid=474542 pid=85125 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7f5c50,0xffff80002a7d0540 process=0xffff800035d1a458 user=0xffff80002a89a000, vmspace=0xfffffd807e2d95a8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 84480 464755 25765 0 2 0 syz-executor 84480 415988 25765 0 3 0x4000080 bell syz-executor 84480 479116 25765 0 2 0x4000000 syz-executor 51682 68320 6574 0 2 0 syz-executor 51682 161775 6574 0 3 0x4000080 fsleep syz-executor 67109 137003 94814 0 2 0 syz-executor 67109 4358 94814 0 3 0x4000080 fsleep syz-executor 85125 414042 75682 0 2 0 syz-executor 85125 353102 75682 0 3 0x4000080 netcon syz-executor *85125 474542 75682 0 7 0x4000000 syz-executor 85125 278436 75682 0 3 0x4000080 fsleep syz-executor 67401 325810 40283 0 3 0x80 nanoslp syz-executor 67401 46223 40283 0 3 0x4000080 lockf syz-executor 67401 116253 40283 0 3 0x4000080 fsleep syz-executor 67401 424487 40283 0 3 0x4000080 fsleep syz-executor 94814 174747 36920 0 3 0x82 nanoslp syz-executor 25765 325838 36920 0 3 0x82 nanoslp syz-executor 78985 314471 36920 0 3 0x82 wait syz-executor 75378 14974 0 0 3 0x14200 bored sosplice 40283 240732 36920 0 3 0x82 nanoslp syz-executor 19115 237560 36920 0 2 0x2 syz-executor 13905 387180 36920 0 3 0x82 wait syz-executor 6574 470138 36920 0 3 0x82 nanoslp syz-executor 75682 2471 36920 0 3 0x82 nanoslp syz-executor 36920 119272 31516 0 3 0x82 kqread syz-executor 31516 255410 82723 0 3 0x10008a sigsusp ksh 82723 381135 48636 0 3 0x98 kqread sshd-session 48636 401582 20903 0 3 0x92 kqread sshd-session 21315 244815 1 0 3 0x100083 ttyin getty 20903 365419 1 0 3 0x88 kqread sshd 77337 59864 92529 73 3 0x1100090 kqread syslogd 92529 105833 1 0 3 0x100082 sbwait syslogd 33995 399299 1 0 3 0x100080 kqread resolvd 94930 344261 55134 77 3 0x100092 kqread dhcpleased 82507 155632 55134 77 3 0x100092 kqread dhcpleased 55134 156473 1 0 3 0x80 kqread dhcpleased 85171 65562 0 0 3 0x14200 bored smr 75191 427124 0 0 2 0x14200 zerothread 18491 10550 0 0 3 0x14200 aiodoned aiodoned 16533 91691 0 0 3 0x14200 syncer update 66678 165014 0 0 3 0x14200 cleaner cleaner 28091 214755 0 0 3 0x14200 reaper reaper 11098 431676 0 0 3 0x14200 pgdaemon pagedaemon 7788 285923 0 0 3 0x14200 bored viomb 29709 53918 0 0 3 0x40014200 acpi0 acpi0 68951 342984 0 0 3 0x14200 bored softnet3 26031 471538 0 0 3 0x14200 bored softnet2 27426 427432 0 0 3 0x14200 bored softnet1 43508 56846 0 0 3 0x14200 bored softnet0 6579 212364 0 0 3 0x14200 bored systqmp 67574 470796 0 0 3 0x14200 bored systq 64329 317144 0 0 3 0x40014200 tmoslp softclock 66496 264364 0 0 3 0x40014200 idle0 1 239808 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10187 11203K 11901K 166960K 12352 0 pcb 17 12K 12K 166960K 135 0 rtable 211 7K 8K 166960K 508 0 pf 29 12K 16K 166960K 85 0 ifaddr 38 6K 7K 166960K 82 0 ifgroup 46 2K 2K 166960K 109 0 sysctl 4 1K 9K 166960K 8 0 counters 31 17K 18K 166960K 61 0 ioctlops 0 0K 4K 166960K 150 0 iov 0 0K 16K 166960K 39 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1430 90K 91K 166960K 1954 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 20 2K 2K 166960K 28 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 715 0 sigio 0 0K 0K 166960K 6 0 proc 60 59K 124K 166960K 592 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 36 0 in_multi 88 6K 7K 166960K 154 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 476 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 252 145K 158K 166960K 7984 0 UVM aobj 18 2K 2K 166960K 22 0 pinsyscall 39 78K 96K 166960K 1815 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 55 0 NDP 10 0K 2K 166960K 52 0 temp 45 8668K 8919K 166960K 42905 0 kqueue 13 20K 33K 166960K 137 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 145 0 142 3 2 1 3 0 8 0 rtentry 136 159 0 68 4 0 4 4 0 8 0 unpcb 144 880 0 863 11 5 6 6 0 8 5 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 174 0 169 4 0 4 4 0 8 3 arp 88 24 0 8 1 0 1 1 0 8 0 inpcb 328 499 0 491 5 1 4 4 0 8 3 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 2 2 1 1 1 0 8 0 nd6 104 37 0 12 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 0 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 21 0 21 2 1 1 1 0 8 1 pppxif 1384 4 0 4 2 1 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pfstitem 24 4 0 2 1 0 1 1 0 8 0 pfstkey 128 4 0 0 1 0 1 1 0 8 0 pfstate 384 2 0 1 1 0 1 1 0 8 0 pfrule 1344 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 692 0 279 31 2 29 29 0 8 2 art_table 40 693 0 279 5 0 5 5 0 8 0 art_node 32 159 0 77 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 1 0 1 1 0 8 0 semapl 112 21 0 4 1 0 1 1 0 8 0 shmpl 112 19 0 4 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2521 0 1021 95 0 95 95 0 8 0 ffsino 248 2521 0 1021 95 0 95 95 0 8 0 nchpl 144 3507 0 1818 63 0 63 63 0 8 0 rtmask 32 4 0 4 2 1 1 1 0 8 1 uvmvnodes 80 3029 0 0 62 0 62 62 0 8 0 vnodes 216 3029 0 0 169 0 169 169 0 8 0 namei 1024 12148 0 12148 4 2 2 2 0 8 2 kstatmem 264 60 0 40 2 0 2 2 0 8 0 scsiplug 72 6 0 6 2 1 1 1 0 8 1 scxspl 216 13553 0 13553 10 2 8 8 1 8 8 plimitpl 152 194 0 178 1 0 1 1 0 8 0 sigapl 424 1010 0 963 8 0 8 8 0 8 1 knotepl 120 156133 0 156086 24 14 10 16 0 8 7 kqueuepl 184 340 0 331 5 2 3 3 0 8 2 pipepl 296 157 0 130 3 0 3 3 0 8 0 fdescpl 440 970 0 940 5 1 4 5 0 8 0 filepl 120 5863 0 5647 18 6 12 13 0 8 4 lockfpl 104 501 0 497 1 0 1 1 0 8 0 lockfspl 48 131 0 128 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 105 0 89 1 0 1 1 0 8 0 ucredpl 104 604 0 592 1 0 1 1 0 8 0 zombiepl 144 1233 0 1231 1 0 1 1 0 8 0 processpl 1160 1010 0 963 5 0 5 5 0 8 1 procpl 656 1926 0 1869 8 0 8 8 0 8 2 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 528 1552 0 1524 19 9 10 11 0 8 7 mcl64k 65536 17 0 17 2 1 1 1 0 8 1 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 2 1 1 1 0 8 1 mcl8k 8192 7 0 7 2 1 1 1 0 8 1 mcl4k 4096 3176 0 3125 16 7 9 14 0 8 1 mcl2k 2048 1101 0 1096 5 3 2 3 0 8 1 mtagpl 96 56 0 12 2 0 2 2 0 8 0 mbufpl 256 11216 0 11027 94 71 23 77 0 8 8 bufpl 280 5999 0 119 420 0 420 420 0 8 0 anonpl 24 157882 0 151726 83 11 72 72 0 187 1 amapchunkpl 152 37997 0 37382 41 6 35 35 0 158 10 amappl16 200 3242 0 3113 30 5 25 25 0 8 4 amappl15 192 76 0 76 1 1 0 1 0 8 0 amappl14 184 109 0 99 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1621 0 1592 3 1 2 3 0 8 0 amappl11 160 64 0 54 1 0 1 1 0 8 0 amappl10 152 12 0 11 2 1 1 1 0 8 0 amappl9 144 270 0 270 1 1 0 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 125 0 115 1 0 1 1 0 8 0 amappl6 120 197 0 193 1 0 1 1 0 8 0 amappl5 112 134 0 127 1 0 1 1 0 8 0 amappl4 104 289 0 274 1 0 1 1 0 8 0 amappl3 96 4968 0 4850 4 0 4 4 0 8 0 amappl2 88 655 0 601 2 0 2 2 0 8 0 amappl1 80 10296 0 9751 13 0 13 13 0 8 1 amappl 88 7188 0 7002 5 0 5 5 0 92 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 128 255 0 255 2 1 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 21 0 4 1 0 1 1 0 8 0 uaddrrnd 24 970 0 940 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 970 0 940 1 0 1 1 0 8 0 vmmpekpl 168 8900 0 8857 3 0 3 3 0 8 0 vmmpepl 168 65987 0 63980 104 1 103 103 0 357 1 vmsppl 360 969 0 940 4 1 3 4 0 8 0 rwobjpl 32 22618 0 18600 35 0 35 35 0 8 1 pdppl 4096 1947 0 1880 105 38 67 83 0 8 0 pvpl 32 419053 0 407071 169 25 144 144 0 265 0 pmappl 216 969 0 940 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 368 0 129 9 0 9 9 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sys_semop(ffff80002a7f4020,ffff80002a89f680,ffff80002a89f5d0) at sys_semop+0x3ae sys/kern/sysv_sem.c:620 syscall(ffff80002a89f680) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a89f680) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb1ef56f5950, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace sys_semop(ffff80002a7f4020,ffff80002a89f680,ffff80002a89f5d0) at sys_semop+0x3ae sys/kern/sysv_sem.c:620 syscall(ffff80002a89f680) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a89f680) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb1ef56f5950, count: -3