panic: vop_genericp_abnaidoc:p kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 685 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 12962 69446 32767 0x10 0 1 syz-executor.1 11313 4130 32767 0x10 0 0 syz-executor.4 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ad7da) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828285c5,ffffffff827ea631,2ad,ffffffff827e16c2) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mi() at proc_trampoline_mi+0x221 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 685 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ad7da) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828285c5,ffffffff827ea631,2ad,ffffffff827e16c2) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mi() at proc_trampoline_mi+0x221 end trace frame: 0x0, count: -4 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002128b3f0 rbx 0xffff800020d59ba7 rdx 0 rcx 0xffff80002126b010 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x53df6b184336e01b r11 0xfadc944553cded4d r12 0xffff800020d599a8 r13 0 r14 0xffffffff82bfb9a8 cpu_info_full_primary+0x29a8 r15 0x1 rip 0xffffffff824bb20c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002128b3e0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) tid=12962 pid=69446 tcnt=1 stat=onproc flags process=10 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000246fa7f8,0xffffffff82c76ad0 process=0xffff8000ffff8868 user=0xffff800021286000, vmspace=0xfffffd806bd1b3b8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *69446 12962 30746 32767 7 0x10 syz-executor.1 54077 77278 26952 32767 2 0x10 syz-executor.7 54077 90744 26952 32767 3 0x4000090 fsleep syz-executor.7 64719 130382 95809 32767 3 0x90 nanoslp syz-executor.5 64719 417504 95809 32767 2 0x4000010 syz-executor.5 98361 196852 79456 32767 3 0x90 nanoslp syz-executor.3 98361 521018 79456 32767 3 0x4000090 netio syz-executor.3 98361 169457 79456 32767 3 0x4000090 fsleep syz-executor.3 79456 141704 2713 32767 3 0x90 nanoslp syz-executor.3 2713 250157 18750 0 3 0x82 wait syz-executor.3 4130 11313 99494 32767 7 0x10 syz-executor.4 99494 227210 18750 0 3 0x82 wait syz-executor.4 62322 101240 37104 32767 2 0x10 syz-executor.2 37104 172298 18750 0 3 0x82 wait syz-executor.2 30746 192141 48659 32767 3 0x90 nanoslp syz-executor.1 53285 272599 92162 32767 2 0x10 syz-executor.0 92162 313648 18750 0 3 0x82 wait syz-executor.0 48659 178284 18750 0 3 0x82 wait syz-executor.1 61681 484196 76183 32767 3 0x90 nanoslp syz-executor.6 76183 140640 18750 0 3 0x82 wait syz-executor.6 95809 175417 31499 32767 3 0x90 nanoslp syz-executor.5 31499 344939 18750 0 3 0x82 wait syz-executor.5 26952 453396 8664 32767 3 0x90 nanoslp syz-executor.7 8664 328726 18750 0 3 0x82 wait syz-executor.7 75942 148973 0 0 3 0x14200 bored sosplice 18750 434715 54712 0 3 0x2000082 wait syz-fuzzer 18750 294192 54712 0 3 0x6000082 nanoslp syz-fuzzer 18750 257131 54712 0 3 0x6000082 thrsleep syz-fuzzer 18750 429666 54712 0 3 0x6000082 thrsleep syz-fuzzer 18750 97846 54712 0 3 0x6000082 wait syz-fuzzer 18750 155519 54712 0 3 0x6000082 wait syz-fuzzer 18750 93291 54712 0 3 0x6000082 kqread syz-fuzzer 18750 371198 54712 0 3 0x6000082 wait syz-fuzzer 18750 290102 54712 0 3 0x6000082 wait syz-fuzzer 18750 437291 54712 0 3 0x6000082 thrsleep syz-fuzzer 18750 358110 54712 0 3 0x6000082 thrsleep syz-fuzzer 18750 22409 54712 0 3 0x6000082 thrsleep syz-fuzzer 18750 395893 54712 0 3 0x6000082 thrsleep syz-fuzzer 18750 419389 54712 0 3 0x6000082 wait syz-fuzzer 18750 114923 54712 0 3 0x6000082 wait syz-fuzzer 18750 73937 54712 0 3 0x6000082 wait syz-fuzzer 54712 325617 2055 0 3 0x10008a sigsusp ksh 2055 109074 41200 0 3 0x9a kqread sshd 67496 241263 1 0 3 0x100083 ttyin getty 41200 179866 1 0 3 0x88 kqread sshd 92840 129202 41157 73 3 0x1100090 kqread syslogd 41157 167869 1 0 3 0x100082 netio syslogd 8395 384818 1 0 3 0x100080 kqread resolvd 96504 476223 47768 77 3 0x100092 kqread dhcpleased 65103 67758 47768 77 3 0x100092 kqread dhcpleased 47768 374798 1 0 3 0x80 kqread dhcpleased 10802 275467 0 0 3 0x14200 bored smr 63581 129622 0 0 2 0x14200 zerothread 22826 202710 0 0 3 0x14200 aiodoned aiodoned 91934 232232 0 0 3 0x14200 syncer update 53651 63433 0 0 3 0x14200 cleaner cleaner 99652 318274 0 0 3 0x14200 reaper reaper 32852 411056 0 0 3 0x14200 pgdaemon pagedaemon 79662 281065 0 0 3 0x14200 bored viomb 36823 182185 0 0 3 0x40014200 acpi0 acpi0 98601 227550 0 0 3 0x40014200 idle1 69726 390007 0 0 3 0x14200 bored softnet3 12150 462124 0 0 3 0x14200 bored softnet2 37495 399797 0 0 3 0x14200 bored softnet1 81290 359756 0 0 3 0x14200 bored softnet0 7571 377411 0 0 3 0x14200 bored systqmp 53589 47639 0 0 3 0x14200 bored systq 94204 276501 0 0 3 0x14200 tmoslp softclockmp 58883 158188 0 0 3 0x40014200 tmoslp softclock 33921 22616 0 0 3 0x40014200 idle0 1 40511 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 64719 (syz-executor.5) thread 0xffff8000211eb2b0 (417504) shared rwlock vmmaplk r = 0 (0xfffffd806bd1bbf0) #0 witness_lock+0x447 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #4 kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279 #5 kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332 #6 alltraps_kern_meltdown+0x7b #7 copyout+0x57 #8 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 4130 (syz-executor.4) thread 0xffff80002957a558 (11313) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82c76098) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46d sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 biowait+0x91 sys/kern/vfs_bio.c:1278 #5 bwrite+0x21c sys/kern/vfs_bio.c:769 #6 ffs_update+0x281 sys/ufs/ffs/ffs_inode.c:113 #7 ufs_mkdir+0x672 sys/ufs/ufs/ufs_vnops.c:1219 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066db95f0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #9 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #10 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #11 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #12 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #12 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066db9b40) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 62322 (syz-executor.2) thread 0xffff8000211eb800 (101240) exclusive rrwlock inode r = 0 (0xfffffd8066db92c0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vn_closefile+0xca vn_close sys/kern/vfs_vnops.c:292 [inline] #5 vn_closefile+0xca sys/kern/vfs_vnops.c:609 #6 fdrop+0xcb sys/kern/kern_descrip.c:1274 #7 closef+0x120 sys/kern/kern_descrip.c:1258 #8 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 53285 (syz-executor.0) thread 0xffff80002957b2a0 (272599) exclusive rrwlock inode r = 0 (0xfffffd8065ab9f80) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343 #6 ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 #10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8065ab95f0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10191 6409K 6420K 78643K 11413 0 pcb 13 16K 20K 78643K 19 0 rtable 244 6K 7K 78643K 2705 0 pf 29 8K 8K 78643K 125 0 ifaddr 44 15K 16K 78643K 242 0 ifgroup 50 2K 2K 78643K 242 0 sysctl 4 1K 1K 78643K 4 0 counters 60 35K 35K 78643K 156 0 ioctlops 0 0K 2K 78643K 267 0 iov 0 0K 24K 78643K 1944 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 3895 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 251 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 1308 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 121K 78643K 18260 0 sigio 0 0K 0K 78643K 547 0 proc 56 78K 115K 78643K 2531 0 subproc 104 6K 6K 78643K 728 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1112 0 in_multi 99 7K 7K 78643K 766 0 ether_multi 1 0K 0K 78643K 28 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 85 387K 387K 78643K 85 0 exec 0 0K 1K 78643K 2458 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 8 62K 64K 78643K 10 0 UVM amap 438 94K 109K 78643K 179887 0 UVM aobj 131 6K 6K 78643K 148 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 607 0 NDP 11 0K 2K 78643K 171 0 temp 74 5920K 6048K 78643K 48892 0 kqueue 13 20K 30K 78643K 1645 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 1098 0 1095 13 12 1 3 0 8 0 rtentry 112 680 0 565 4 0 4 4 0 8 0 unpcb 144 13300 0 13285 130 124 6 8 0 8 5 syncache 304 265 0 265 33 32 1 1 0 8 1 tcpqe 32 312 0 312 27 27 0 1 0 8 0 tcpcb 808 28035 0 27999 263 249 14 20 0 8 6 arp 120 119 0 100 1 0 1 1 0 8 0 ipq 40 125 0 125 12 12 0 1 0 8 0 ipqe 40 479 0 479 12 12 0 1 0 8 0 inpcb 368 35729 0 35687 238 225 13 19 0 8 5 nd6 136 204 0 176 5 3 2 2 0 8 0 kcovpl 48 56 0 48 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2692 0 2226 36 6 30 31 0 8 0 art_table 32 2693 0 2226 4 0 4 4 0 8 0 art_node 16 679 0 574 1 0 1 1 0 8 0 sysvmsgpl 40 43 0 3 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1304 0 1294 1 0 1 1 0 8 0 shmpl 112 145 0 17 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 23516 0 22064 92 0 92 92 0 8 0 ffsino 272 23516 0 22064 98 0 98 98 0 8 0 nchpl 144 47627 0 45986 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 148228 0 148226 3 2 1 2 0 8 0 percpumem 16 91 0 48 1 0 1 1 0 8 0 kstatmem 264 118 0 96 2 0 2 2 0 8 0 scxspl 216 156444 0 156444 67 64 3 8 1 8 3 plimitpl 152 3190 0 3166 23 22 1 2 0 8 0 sigapl 424 18462 0 18409 7 0 7 7 0 8 0 futexpl 64 181352 0 181350 2 1 1 1 0 8 0 knotepl 120 1135 0 0 18 0 18 18 0 8 0 kqueuepl 216 4300 0 4291 67 64 3 5 0 8 2 pipepl 320 4013 0 3985 102 96 6 9 0 8 3 fdescpl 496 18443 0 18410 7 2 5 6 0 8 0 filepl 152 131693 0 131451 211 196 15 20 0 8 2 lockfpl 104 2760 0 2758 3 2 1 2 0 8 0 lockfspl 48 776 0 774 1 0 1 1 0 8 0 sessionpl 144 71 0 55 1 0 1 1 0 8 0 pgrppl 48 357 0 341 1 0 1 1 0 8 0 ucredpl 104 12504 0 12486 1 0 1 1 0 8 0 zombiepl 144 18410 0 18409 1 0 1 1 0 8 0 processpl 1072 18462 0 18409 5 1 4 5 0 8 0 procpl 680 50884 0 50812 32 24 8 9 0 8 1 sosppl 168 334 0 331 17 16 1 1 0 8 0 sockpl 488 50896 0 50839 698 674 24 38 0 8 12 mcl64k 65536 42 0 0 4 1 3 3 0 8 0 mcl16k 16384 19 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 3 0 3 3 0 8 0 mcl4k 4096 133 0 0 8 4 4 8 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 470 0 0 32 17 15 32 0 8 0 mtagpl 96 15 0 0 1 0 1 1 0 8 0 mbufpl 256 3654 0 0 208 0 208 208 0 8 0 bufpl 288 35442 0 29120 452 0 452 452 0 8 0 anonpl 24 1809848 0 1798815 232 143 89 100 0 186 0 amapchunkpl 152 568337 0 567529 157 113 44 48 0 158 7 amappl16 200 37595 0 37263 201 182 19 34 0 8 0 amappl15 192 33 0 31 1 0 1 1 0 8 0 amappl14 184 288 0 277 2 1 1 2 0 8 0 amappl13 176 23 0 22 2 1 1 1 0 8 0 amappl12 168 19901 0 19861 3 1 2 3 0 8 0 amappl11 160 54 0 44 1 0 1 1 0 8 0 amappl10 152 82 0 70 1 0 1 1 0 8 0 amappl9 144 306 0 306 30 29 1 1 0 8 1 amappl8 136 1006 0 814 7 0 7 7 0 8 0 amappl7 128 359 0 333 2 0 2 2 0 8 0 amappl6 120 1132 0 1111 1 0 1 1 0 8 0 amappl5 112 482 0 474 1 0 1 1 0 8 0 amappl4 104 1050 0 1021 2 1 1 2 0 8 0 amappl3 96 111306 0 111219 16 12 4 4 0 8 1 amappl2 88 19736 0 19654 3 1 2 3 0 8 0 amappl1 80 75137 0 74616 22 10 12 22 0 8 0 amappl 88 178443 0 178205 8 1 7 7 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 72 147 0 17 3 0 3 3 0 8 0 uaddrrnd 24 18443 0 18410 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 18443 0 18410 1 0 1 1 0 8 0 vmmpekpl 168 141423 0 141360 4 0 4 4 0 8 0 vmmpepl 168 1088786 0 1086350 326 193 133 158 0 357 10 vmsppl 464 18442 0 18410 7 2 5 6 0 8 0 rwobjpl 56 269150 0 261631 133 25 108 111 0 8 0 pdppl 4096 36894 0 36820 706 624 82 94 0 8 8 pvpl 32 5313944 0 5296720 535 370 165 340 0 265 0 pmappl 248 18442 0 18410 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2185 0 1154 30 0 30 30 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bfaff0) at x86_ipi_db+0x1e 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+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 cnputc(a) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(a) at db_putchar+0x4bd sys/ddb/db_output.c:168 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff8282fd50) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff8279ceb1) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff800027b657d8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8066486b20,fffffd80664b3da8) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd80664b3da8) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 end trace frame: 0xffff800027b658c0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82bfaff0) at x86_ipi_db+0x1e 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+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc softintr_dispatch(0) at softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 cnputc(a) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(a) at db_putchar+0x4bd sys/ddb/db_output.c:168 kprintf() at kprintf+0x6bc sys/kern/subr_prf.c:724 db_printf(ffffffff8282fd50) at db_printf+0x89 sys/kern/subr_prf.c:498 panic(ffffffff8279ceb1) at panic+0xdb sys/kern/subr_prf.c:216 vop_generic_badop(ffff800027b657d8) at vop_generic_badop+0x1f sys/kern/vfs_default.c:133 VOP_STRATEGY(fffffd8066486b20,fffffd80664b3da8) at VOP_STRATEGY+0x9f sys/kern/vfs_vops.c:628 bwrite(fffffd80664b3da8) at bwrite+0x1f1 sys/kern/vfs_bio.c:760 VOP_BWRITE(fffffd80664b3da8) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 ufs_mkdir(ffff800027b65a70) at ufs_mkdir+0x6c4 sys/ufs/ufs/ufs_vnops.c:1235 VOP_MKDIR(fffffd80674c8058,ffff800027b65bd0,ffff800027b65c00,ffff800027b65b00) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 domkdirat(ffff80002957a558,ffffff9c,7a6a1168aa50,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3073 syscall(ffff800027b65d80) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800027b65d80) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a6a1168aac0, count: -20 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ad7da) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828285c5,ffffffff827ea631,2ad,ffffffff827e16c2) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mi() at proc_trampoline_mi+0x221 end trace frame: 0x0, count: 11 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ad7da) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff828285c5,ffffffff827ea631,2ad,ffffffff827e16c2) at __assert+0x29 sys/kern/subr_prf.c:157 proc_trampoline_mi() at proc_trampoline_mi+0x221 end trace frame: 0x0, count: -4