kernel: protection fault trap, code=0 Stopped at lf_advlock+0x2f1: incl 0x28(%r12) ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace lf_advlock(ffff8000015d55e0,0,fffffd806da80550,2,ffff80002a795bf0,40) at lf_advlock+0x2f1 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff8000015d55e0,0,fffffd806da80550,2,ffff80002a795bf0,40) at lf_advlock+0x2f1 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd806c7860d8,fffffd806da80550,2,ffff80002a795bf0,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:623 closef(fffffd8069e6c2d8,ffff80002a7bdca0) at closef+0x13f sys/kern/kern_descrip.c:-1 fdfree(ffff80002a7bdca0) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7bdca0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7bdca0,ffff80002a795e20,ffff80002a795d70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a795e20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a795e20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dd4f1a9c200, count: -8 ddb> show registers rdi 0xffff80002a7bdca4 rsi 0xffff80002a7bdca4 rbp 0xffff80002a795b40 rbx 0 rdx 0 rcx 0xffffffff83813ff0 cpu_info_full_primary+0x1ff0 rax 0xffff80002a7bdca0 r8 0 r9 0 r10 0 r11 0xa25450b863173868 r12 0xdeafbeaddeafbead r13 0x2 r14 0xffff80002a795bf0 r15 0x1 rip 0xffffffff817cf481 lf_advlock+0x2f1 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a795ab0 ss 0x10 lf_advlock+0x2f1: incl 0x28(%r12) ddb> show proc PROC (syz-executor) tid=3281 pid=46524 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=76, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a7bdca0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff800031cfcfb0,0xffff800031cfdcb8 process=0xffff800031cf9698 user=0xffff80002a790000, vmspace=0xfffffd806c98b010 estcpu=26, cpticks=9, pctcpu=0.6, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 26203 387147 31338 0 2 0 syz-executor 14795 267782 91447 0 2 0 syz-executor 14795 264150 91447 0 2 0x4000000 syz-executor 49175 199275 64739 0 2 0 syz-executor 49175 86472 64739 0 3 0x4000080 fsleep syz-executor 26966 150736 0 0 3 0x14200 acct acct 61993 87543 1 0 3 0x100083 ttyin getty 49655 400161 68112 0 2 0x3 syz-executor 38097 451595 68112 0 2 0x10000003 syz-executor 91447 335356 68112 0 2 0x3 syz-executor 59671 11150 68112 0 2 0x3 syz-executor 64739 447506 68112 0 2 0x3 syz-executor 46862 478878 68112 0 2 0x2 syz-executor 31338 423645 68112 0 3 0x82 nanoslp syz-executor 45501 256697 68112 0 2 0x3 syz-executor 68112 71313 11423 0 3 0x82 kqread syz-executor 11423 497515 2382 0 3 0x10008a sigsusp ksh 2382 213214 50344 0 3 0x98 kqread sshd-session 50344 12818 21520 0 3 0x92 kqread sshd-session 21520 159614 1 0 3 0x88 kqread sshd 43103 57274 34132 73 3 0x1100090 kqread syslogd 34132 269113 1 0 3 0x100082 sbwait syslogd 55548 327587 1 0 3 0x100080 kqread resolvd 20949 10576 53813 77 3 0x100092 kqread dhcpleased 17595 523173 53813 77 3 0x100092 kqread dhcpleased 53813 418253 1 0 3 0x80 kqread dhcpleased 41558 125072 0 0 3 0x14200 bored smr 75136 114636 0 0 2 0x14200 zerothread 92811 518924 0 0 3 0x14200 aiodoned aiodoned 52079 516836 0 0 3 0x14200 syncer update 54770 491135 0 0 3 0x14200 cleaner cleaner 61846 46151 0 0 3 0x14200 reaper reaper 92533 199401 0 0 3 0x14200 pgdaemon pagedaemon 80745 38622 0 0 3 0x14200 bored viomb 68680 341874 0 0 3 0x40014200 acpi0 acpi0 60422 341729 0 0 3 0x14200 bored softnet0 31865 249247 0 0 3 0x14200 bored systqmp 59360 78398 0 0 3 0x14200 bored systq 41602 302872 0 0 3 0x40014200 tmoslp softclock 57760 394060 0 0 3 0x40014200 idle0 1 71736 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11033 12103K 12315K 166960K 12373 0 pcb 17 14K 16K 166960K 123 0 rtable 247 7K 7K 166960K 382 0 pf 30 12K 13K 166960K 37 0 ifaddr 42 7K 7K 166960K 46 0 ifgroup 50 2K 2K 166960K 57 0 sysctl 1 1K 9K 166960K 6 0 counters 33 17K 18K 166960K 36 0 ioctlops 0 0K 4K 166960K 46 0 iov 0 0K 16K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1424 90K 90K 166960K 1617 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 15 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 244K 166960K 286 0 proc 60 59K 91K 166960K 503 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 21 0 in_multi 99 7K 7K 166960K 108 0 ether_multi 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 379 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 196 150K 165K 166960K 4318 0 UVM aobj 10 6K 6K 166960K 10 0 pinsyscall 35 70K 94K 166960K 1360 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 8 0 NDP 11 0K 2K 166960K 29 0 temp 39 8663K 8731K 166960K 16365 0 kqueue 13 20K 26K 166960K 38 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 41 0 38 1 0 1 1 0 8 0 rtentry 136 115 0 4 4 0 4 4 0 8 0 unpcb 144 114 0 99 1 0 1 1 0 8 0 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 736 123 0 116 7 0 7 7 0 8 6 arp 96 19 0 1 1 0 1 1 0 8 0 ipq 40 2 0 1 1 0 1 1 0 8 0 ipqe 40 3 0 2 1 0 1 1 0 8 0 inpcb 328 304 0 294 8 1 7 7 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 455 0 2 29 0 29 29 0 8 0 art_table 40 457 0 2 5 0 5 5 0 8 0 art_node 32 115 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 2 1 1 1 0 8 1 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 12 0 3 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1875 0 376 95 0 95 95 0 8 0 ffsino 256 1875 0 376 95 0 95 95 0 8 0 nchpl 144 2250 0 562 64 0 64 64 0 8 0 vnodes 216 2101 0 0 117 0 117 117 0 8 0 namei 1024 7550 0 7548 2 1 1 2 0 8 0 vcpupl 3904 1 0 0 1 0 1 1 0 8 0 vmpool 808 1 0 0 1 0 1 1 0 8 0 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 6964 0 6964 3 2 1 3 1 8 1 plimitpl 152 112 0 95 1 0 1 1 0 8 0 sigapl 424 564 0 523 6 1 5 6 0 8 0 knotepl 120 7992 0 7945 10 0 10 10 0 8 8 kqueuepl 184 57 0 48 1 0 1 1 0 8 0 pipepl 304 121 0 94 3 0 3 3 0 8 0 fdescpl 448 550 0 524 5 1 4 5 0 8 0 filepl 120 2892 0 2683 11 0 11 11 0 8 2 lockfpl 104 309 0 307 2 0 2 2 0 8 1 lockfspl 48 91 0 89 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 33 0 17 1 0 1 1 0 8 0 ucredpl 104 460 0 449 1 0 1 1 0 8 0 zombiepl 144 594 0 592 2 1 1 1 0 8 0 processpl 1152 564 0 523 4 0 4 4 0 8 0 procpl 664 784 0 741 5 0 5 5 0 8 0 sockpl 552 464 0 436 8 0 8 8 0 8 5 mcl64k 65536 8 0 7 1 0 1 1 0 8 0 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 6 0 6 2 1 1 1 0 8 1 mcl4k 4096 2645 0 2595 12 5 7 12 0 8 0 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 371 0 368 2 1 1 2 0 8 0 mtagpl 96 11 0 6 1 0 1 1 0 8 0 mbufpl 256 5629 0 5441 13 0 13 13 0 8 0 bufpl 280 2574 0 118 176 0 176 176 0 8 0 anonpl 24 109324 0 106513 37 6 31 31 0 187 9 amapchunkpl 152 12840 0 12477 30 3 27 27 0 158 8 amappl16 200 1850 0 1829 5 3 2 5 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 9 0 9 1 1 0 1 0 8 0 amappl13 176 407 0 406 1 0 1 1 0 8 0 amappl12 168 897 0 862 2 0 2 2 0 8 0 amappl11 160 21 0 21 1 1 0 1 0 8 0 amappl10 152 43 0 33 1 0 1 1 0 8 0 amappl9 144 280 0 279 1 0 1 1 0 8 0 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 78 0 77 1 0 1 1 0 8 0 amappl6 120 338 0 327 1 0 1 1 0 8 0 amappl5 112 87 0 79 1 0 1 1 0 8 0 amappl4 104 396 0 372 1 0 1 1 0 8 0 amappl3 96 2083 0 2017 3 0 3 3 0 8 0 amappl2 88 683 0 616 2 0 2 2 0 8 0 amappl1 80 10249 0 9715 14 1 13 13 0 8 0 amappl 88 3568 0 3440 6 1 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 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 550 0 524 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 550 0 524 1 0 1 1 0 8 0 vmmpekpl 168 6326 0 6290 2 0 2 2 0 8 0 vmmpepl 168 43892 0 42292 87 1 86 86 0 357 5 vmsppl 368 549 0 524 4 1 3 4 0 8 0 rwobjpl 40 15342 0 14443 11 0 11 11 0 8 0 pdppl 4096 1108 0 1049 98 31 67 78 0 8 8 pvpl 32 262877 0 255450 93 10 83 84 0 265 5 pmappl 216 550 0 524 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 377 0 44 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace lf_advlock(ffff8000015d55e0,0,fffffd806da80550,2,ffff80002a795bf0,40) at lf_advlock+0x2f1 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff8000015d55e0,0,fffffd806da80550,2,ffff80002a795bf0,40) at lf_advlock+0x2f1 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd806c7860d8,fffffd806da80550,2,ffff80002a795bf0,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:623 closef(fffffd8069e6c2d8,ffff80002a7bdca0) at closef+0x13f sys/kern/kern_descrip.c:-1 fdfree(ffff80002a7bdca0) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7bdca0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7bdca0,ffff80002a795e20,ffff80002a795d70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a795e20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a795e20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dd4f1a9c200, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace lf_advlock(ffff8000015d55e0,0,fffffd806da80550,2,ffff80002a795bf0,40) at lf_advlock+0x2f1 ls_ref sys/kern/vfs_lockf.c:138 [inline] lf_advlock(ffff8000015d55e0,0,fffffd806da80550,2,ffff80002a795bf0,40) at lf_advlock+0x2f1 sys/kern/vfs_lockf.c:278 VOP_ADVLOCK(fffffd806c7860d8,fffffd806da80550,2,ffff80002a795bf0,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:623 closef(fffffd8069e6c2d8,ffff80002a7bdca0) at closef+0x13f sys/kern/kern_descrip.c:-1 fdfree(ffff80002a7bdca0) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7bdca0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7bdca0,ffff80002a795e20,ffff80002a795d70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a795e20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a795e20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dd4f1a9c200, count: -8