panic: vpoapn_igc:e kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 678 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *237802 16640 32767 0x10 0 1 syz-executor.1 254066 82458 32767 0x10 0x4000000 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259fa58) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613588,ffffffff825db93f,2a6,ffffffff825d06bf) at __assert+0x25 sys/kern/subr_prf.c:161 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: 11 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}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu0: vop_generic_badop cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 678 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259fa58) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613588,ffffffff825db93f,2a6,ffffffff825d06bf) at __assert+0x25 sys/kern/subr_prf.c:161 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: -4 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e39ff20 rbx 0xffff800020cd9c5f rdx 0 rcx 0 rax 0xffff80002348b268 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4258776180bf55f r11 0x85a5bb80f396418c r12 0xffff800020cd9a60 r13 0 r14 0xffffffff82925a60 cpu_info_full_primary+0x2a60 r15 0x1 rip 0xffffffff821e5418 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e39ff10 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=237802 stat=onproc flags process=10 proc=0 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80002348b508,0xffffffff82a1a490 process=0xffff8000fffe8440 user=0xffff80002e39b000, vmspace=0xfffffd806c7505d0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *16640 237802 82451 32767 7 0x10 syz-executor.1 82458 365858 95918 32767 2 0x10 syz-executor.0 82458 254066 95918 32767 7 0x4000010 syz-executor.0 84765 462970 35169 32767 2 0x10 syz-executor.5 84765 126831 35169 32767 2 0x4000010 syz-executor.5 75300 378536 11716 32767 2 0x10 syz-executor.7 75300 216141 11716 32767 3 0x4000090 netcon syz-executor.7 75300 479757 11716 32767 3 0x4000090 fsleep syz-executor.7 11716 38890 35891 32767 3 0x90 nanoslp syz-executor.7 35891 361435 97485 0 3 0x82 wait syz-executor.7 82451 413840 68398 32767 2 0x10 syz-executor.1 68398 23007 97485 0 3 0x82 wait syz-executor.1 83444 384242 0 0 3 0x14200 bored sosplice 81001 419567 27501 32767 3 0x90 nanoslp syz-executor.6 27501 169790 97485 0 3 0x82 wait syz-executor.6 80287 178442 19185 32767 3 0x10 biowait syz-executor.4 19185 242752 97485 0 3 0x82 wait syz-executor.4 35169 108259 23213 32767 3 0x90 nanoslp syz-executor.5 23213 105726 97485 0 3 0x82 wait syz-executor.5 83651 382424 90272 32767 2 0x10 syz-executor.3 83266 41091 82090 32767 3 0x10 biowait syz-executor.2 82090 391103 97485 0 3 0x82 wait syz-executor.2 90272 274592 97485 0 3 0x82 wait syz-executor.3 95918 81328 96714 32767 3 0x90 nanoslp syz-executor.0 96714 177330 97485 0 3 0x82 wait syz-executor.0 97485 222653 53476 0 3 0x82 thrsleep syz-fuzzer 97485 425117 53476 0 3 0x4000082 nanoslp syz-fuzzer 97485 109153 53476 0 3 0x4000082 thrsleep syz-fuzzer 97485 461617 53476 0 3 0x4000082 thrsleep syz-fuzzer 97485 313543 53476 0 3 0x4000082 thrsleep syz-fuzzer 97485 343126 53476 0 3 0x4000082 kqread syz-fuzzer 97485 203667 53476 0 3 0x4000082 nanoslp syz-fuzzer 97485 332602 53476 0 3 0x4000082 thrsleep syz-fuzzer 97485 214078 53476 0 3 0x4000082 thrsleep syz-fuzzer 53476 155985 35379 0 3 0x10008a sigsusp ksh 35379 60363 29821 0 3 0x9a kqread sshd 98314 270631 1 0 3 0x100083 ttyin getty 29821 192765 1 0 3 0x88 kqread sshd 55257 246493 65947 73 3 0x1100090 kqread syslogd 65947 513918 1 0 3 0x100082 netio syslogd 6339 51001 1 0 3 0x100080 kqread resolvd 19359 152612 58539 77 3 0x100092 kqread dhcpleased 90900 327264 58539 77 3 0x100092 kqread dhcpleased 58539 518740 1 0 3 0x80 kqread dhcpleased 83670 185747 0 0 3 0x14200 bored smr 86994 134458 0 0 2 0x14200 zerothread 93217 356355 0 0 3 0x14200 aiodoned aiodoned 76653 217795 0 0 3 0x14200 syncer update 81501 175758 0 0 3 0x14200 cleaner cleaner 90069 336427 0 0 3 0x14200 reaper reaper 11514 260493 0 0 3 0x14200 pgdaemon pagedaemon 71348 140953 0 0 3 0x14200 bored viomb 24460 507352 0 0 3 0x40014200 acpi0 acpi0 58181 328998 0 0 3 0x40014200 idle1 42566 157927 0 0 3 0x14200 bored softnet 77921 156167 0 0 3 0x14200 bored softnet 69003 235245 0 0 3 0x14200 bored softnet 88401 332825 0 0 3 0x14200 bored softnet 60687 221072 0 0 3 0x14200 bored systqmp 57765 312703 0 0 3 0x14200 bored systq 56281 143655 0 0 3 0x40014200 bored softclock 72817 173234 0 0 3 0x40014200 idle0 1 500471 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 82458 (syz-executor.0) thread 0xffff80002348a008 (254066) exclusive rrwlock inode r = 0 (0xfffffd8068d961a8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:678 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x122c sys/ufs/ufs/ufs_lookup.c:582 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dofaccessat+0x158 sys/kern/vfs_syscalls.c:2013 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b79c40) #0 witness_lock+0x44d #1 syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 #2 Xsyscall+0x128 Process 80287 (syz-executor.4) thread 0xffff80002348ad28 (178442) exclusive rrwlock inode r = 0 (0xfffffd80674cf0a8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3116 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80640c7810) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3101 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 83651 (syz-executor.3) thread 0xffff80002348aa88 (382424) exclusive rrwlock inode r = 0 (0xfffffd8068d96c48) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:678 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1852 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c8234d8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1852 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 83266 (syz-executor.2) thread 0xffff80002348b7a8 (41091) exclusive rrwlock inode r = 0 (0xfffffd80674cf708) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3116 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c823098) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3101 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10194 6410K 6420K 78643K 11303 0 pcb 13 16K 18K 78643K 19 0 rtable 234 6K 6K 78643K 844 0 ifaddr 81 17K 17K 78643K 125 0 sysctl 1 1K 1K 78643K 1 0 counters 56 35K 35K 78643K 68 0 ioctlops 0 0K 2K 78643K 120 0 iov 0 0K 16K 78643K 697 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1270 79K 79K 78643K 2207 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 31 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 816 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 121K 78643K 3603 0 sigio 0 0K 0K 78643K 67 0 proc 56 78K 127K 78643K 872 0 subproc 104 6K 6K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 9084 0 in_multi 99 6K 6K 78643K 185 0 ether_multi 1 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 163 731K 731K 78643K 163 0 exec 0 0K 2K 78643K 1666 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 244 84K 97K 78643K 23175 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 71 0 NDP 11 0K 2K 78643K 45 0 temp 124 4734K 4798K 78643K 11623 0 kqueue 13 20K 26K 78643K 366 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 355 0 352 6 5 1 3 0 8 0 rtentry 112 182 0 72 4 0 4 4 0 8 0 unpcb 136 2198 0 2183 21 18 3 5 0 8 2 syncache 296 42 0 42 8 7 1 1 0 8 1 tcpqe 32 88 0 88 4 3 1 1 0 8 1 tcpcb 736 3377 0 3350 76 67 9 21 0 8 4 arp 120 31 0 13 1 0 1 1 0 8 0 inpcb 312 4970 0 4955 53 43 10 17 0 8 8 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 46 0 22 1 0 1 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 759 0 303 31 2 29 30 0 8 0 art_table 32 760 0 303 4 0 4 4 0 8 0 art_node 16 181 0 81 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 809 0 799 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6310 0 4868 91 0 91 91 0 8 0 ffsino 272 6310 0 4868 97 0 97 97 0 8 0 nchpl 144 11431 0 9790 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 41182 0 41179 3 2 1 2 0 8 0 percpumem 16 46 0 6 1 0 1 1 0 8 0 kstatmem 264 34 0 12 2 0 2 2 0 8 0 scxspl 216 30401 0 30399 20 18 2 8 0 8 1 plimitpl 152 618 0 596 1 0 1 1 0 8 0 sigapl 424 3869 0 3817 7 0 7 7 0 8 0 futexpl 64 35071 0 35070 1 0 1 1 0 8 0 knotepl 120 346 0 0 10 0 10 10 0 8 0 kqueuepl 216 1003 0 994 17 12 5 5 0 8 4 pipepl 336 1035 0 1007 36 28 8 13 0 8 5 fdescpl 496 3851 0 3818 7 2 5 6 0 8 0 filepl 152 27663 0 27422 49 34 15 19 0 8 5 lockfpl 104 568 0 566 2 1 1 2 0 8 0 lockfspl 48 199 0 197 1 0 1 1 0 8 0 sessionpl 144 29 0 13 1 0 1 1 0 8 0 pgrppl 48 317 0 301 1 0 1 1 0 8 0 ucredpl 96 5092 0 5074 1 0 1 1 0 8 0 zombiepl 144 3818 0 3817 1 0 1 1 0 8 0 processpl 1064 3869 0 3817 5 1 4 5 0 8 0 procpl 672 10747 0 10683 8 1 7 8 0 8 0 sosppl 168 68 0 68 8 7 1 1 0 8 1 sockpl 480 7592 0 7559 114 101 13 29 0 8 8 mcl64k 65536 22 0 0 3 0 3 3 0 8 0 mcl16k 16384 16 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 21 0 0 2 0 2 2 0 8 0 mcl8k 8192 18 0 0 3 1 2 3 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 176 0 0 18 2 16 18 0 8 1 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 492 0 0 31 0 31 31 0 8 0 bufpl 288 8665 0 2335 453 0 453 453 0 8 0 anonpl 24 785751 0 773566 145 53 92 104 0 186 3 amapchunkpl 152 66954 0 66364 64 33 31 37 0 158 5 amappl16 200 12447 0 12085 84 58 26 33 0 8 6 amappl15 192 3 0 3 2 2 0 1 0 8 0 amappl14 184 12 0 10 1 0 1 1 0 8 0 amappl13 176 883 0 875 1 0 1 1 0 8 0 amappl12 168 501 0 492 1 0 1 1 0 8 0 amappl11 160 89 0 73 1 0 1 1 0 8 0 amappl10 152 1205 0 1196 1 0 1 1 0 8 0 amappl9 144 551 0 546 1 0 1 1 0 8 0 amappl8 136 1694 0 1628 3 0 3 3 0 8 0 amappl7 128 1156 0 1141 1 0 1 1 0 8 0 amappl6 120 274 0 259 2 1 1 2 0 8 0 amappl5 112 4422 0 4402 1 0 1 1 0 8 0 amappl4 104 976 0 953 2 1 1 2 0 8 0 amappl3 96 11978 0 11925 2 0 2 2 0 8 0 amappl2 88 5094 0 5025 3 1 2 3 0 8 0 amappl1 80 92877 0 92232 21 5 16 19 0 8 0 amappl 88 22472 0 22309 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 128 253 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 3851 0 3818 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3851 0 3818 1 0 1 1 0 8 0 vmmpekpl 168 34128 0 34074 3 0 3 3 0 8 0 vmmpepl 168 380770 0 378288 174 42 132 137 0 357 9 vmsppl 368 3850 0 3818 4 0 4 4 0 8 0 rwobjpl 56 102136 0 94774 107 0 107 107 0 8 0 pdppl 4096 7709 0 7636 177 96 81 93 0 8 8 pvpl 32 1542595 0 1525510 280 114 166 240 0 265 10 pmappl 248 3850 0 3818 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1087 0 243 25 0 25 25 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82924ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 sys/dev/kcov.c:148 __mp_lock(ffffffff82b79a38) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b79a38) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff800021234130,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f Xspllower() at Xspllower+0x19 cnputc(65) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(65) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff826190ef) at db_printf+0x85 sys/kern/subr_prf.c:502 panic(ffffffff82591691) at panic+0xd7 sys/kern/subr_prf.c:220 vop_generic_badop(ffff800021234550) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 end trace frame: 0xffff8000212345b0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82924ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 sys/dev/kcov.c:148 __mp_lock(ffffffff82b79a38) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b79a38) at __mp_lock+0x133 sys/kern/kern_lock.c:147 intr_handler(ffff800021234130,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f Xspllower() at Xspllower+0x19 cnputc(65) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(65) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff826190ef) at db_printf+0x85 sys/kern/subr_prf.c:502 panic(ffffffff82591691) at panic+0xd7 sys/kern/subr_prf.c:220 vop_generic_badop(ffff800021234550) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133 VOP_READLINK(fffffd8069696e00,ffff8000212345c0,fffffd807f7d7720) at VOP_READLINK+0xb6 sys/kern/vfs_vops.c:476 namei(ffff800021234668) at namei+0x48a sys/kern/vfs_lookup.c:290 dofaccessat(ffff80002348a008,6,20000100,2,0) at dofaccessat+0x158 sys/kern/vfs_syscalls.c:2013 syscall(ffff800021234870) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021234870) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x39e61dfe290, count: -19 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259fa58) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613588,ffffffff825db93f,2a6,ffffffff825d06bf) at __assert+0x25 sys/kern/subr_prf.c:161 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: 11 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259fa58) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613588,ffffffff825db93f,2a6,ffffffff825d06bf) at __assert+0x25 sys/kern/subr_prf.c:161 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: -4