panic: sleep: syz-executor[83601] slept inside a no-sleep walk bracket (raw pointer held across sleep, wmesg "biowait") Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *450965 83601 0 0 0x4000010 0K syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84d8d160) at panic+0x270 sys/kern/subr_prf.c:198 sleep_setup(ffff800001bdf660,11,ffffffff84692f80) at sleep_setup+0x3b2 sys/kern/kern_synch.c:296 tsleep_nsec(ffff800001bdf660,11,ffffffff84692f80,ffffffffffffffff) at tsleep_nsec+0x29c sys/kern/kern_synch.c:153 biowait(ffff800001bdf660) at biowait+0xe6 sys/kern/vfs_bio.c:1110 bwrite(ffff800001bdf660) at bwrite+0x4e1 sys/kern/vfs_bio.c:625 ffs_update(ffff8000016e2d10,1) at ffs_update+0x619 sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(ffff8000016e2d10,0,0,ffffffffffffffff) at ffs_truncate+0x12f0 sys/ufs/ffs/ffs_inode.c:-1 ufs_inactive(ffff80003a6f81a0) at ufs_inactive+0x2cb sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(ffff800001d99cc8,ffff800045ff7248) at VOP_INACTIVE+0x1bb sys/kern/vfs_vops.c:498 vrele(ffff800001d99cc8) at vrele+0x16a sys/kern/vfs_subr.c:845 ktrsettrace(ffffffff85e2cd80,ff7ea096,ffff800001d89710,ffff8000001195b0) at ktrsettrace+0x16c sys/kern/kern_ktrace.c:123 ktrops(ffff800045ff7248,ffffffff85e2cd80,0,ff7ea096,ffff800001d89710,ffff8000001195b0) at ktrops+0x338 sys/kern/kern_ktrace.c:578 doktrace(ffff800001d89710,4,7f7ea096,0,ffff800045ff7248) at doktrace+0xa72 ktrsetchildren sys/kern/kern_ktrace.c:607 [inline] doktrace(ffff800001d89710,4,7f7ea096,0,ffff800045ff7248) at doktrace+0xa72 sys/kern/kern_ktrace.c:522 end trace frame: 0xffff80003a6f8690, count: 0 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: sleep: syz-executor[83601] slept inside a no-sleep walk bracket (raw pointer held across sleep, wmesg "biowait") ddb{0}> show kasan kasan: no report recorded this boot ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84d8d160) at panic+0x270 sys/kern/subr_prf.c:198 sleep_setup(ffff800001bdf660,11,ffffffff84692f80) at sleep_setup+0x3b2 sys/kern/kern_synch.c:296 tsleep_nsec(ffff800001bdf660,11,ffffffff84692f80,ffffffffffffffff) at tsleep_nsec+0x29c sys/kern/kern_synch.c:153 biowait(ffff800001bdf660) at biowait+0xe6 sys/kern/vfs_bio.c:1110 bwrite(ffff800001bdf660) at bwrite+0x4e1 sys/kern/vfs_bio.c:625 ffs_update(ffff8000016e2d10,1) at ffs_update+0x619 sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(ffff8000016e2d10,0,0,ffffffffffffffff) at ffs_truncate+0x12f0 sys/ufs/ffs/ffs_inode.c:-1 ufs_inactive(ffff80003a6f81a0) at ufs_inactive+0x2cb sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(ffff800001d99cc8,ffff800045ff7248) at VOP_INACTIVE+0x1bb sys/kern/vfs_vops.c:498 vrele(ffff800001d99cc8) at vrele+0x16a sys/kern/vfs_subr.c:845 ktrsettrace(ffffffff85e2cd80,ff7ea096,ffff800001d89710,ffff8000001195b0) at ktrsettrace+0x16c sys/kern/kern_ktrace.c:123 ktrops(ffff800045ff7248,ffffffff85e2cd80,0,ff7ea096,ffff800001d89710,ffff8000001195b0) at ktrops+0x338 sys/kern/kern_ktrace.c:578 doktrace(ffff800001d89710,4,7f7ea096,0,ffff800045ff7248) at doktrace+0xa72 ktrsetchildren sys/kern/kern_ktrace.c:607 [inline] doktrace(ffff800001d89710,4,7f7ea096,0,ffff800045ff7248) at doktrace+0xa72 sys/kern/kern_ktrace.c:522 sys_ktrace(ffff800045ff7248,ffff80003a6f8820,ffff80003a6f8780) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:563 syscall(ffff80003a6f8820) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a6f8820) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x36896726f90, count: -17 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003a6f7a90 rbx 0xffff80003a6f7b00 rdx 0 rcx 0xffffffff851e9ff0 cpu_info_full_primary+0x1ff0 rax 0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003a6f7880 r11 0xffffffff83e54b70 x86_bus_space_io_read_1 r12 0xffffffff84d8d160 .str.9 r13 0xffffffff851eac08 cpu_info_full_primary+0x2c08 r14 0xffffffff851eae07 cpu_info_full_primary+0x2e07 r15 0x1 rip 0xffffffff82f1b577 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003a6f7a90 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=450965 pid=83601 tcnt=3 stat=onproc flags process=0 proc=4000010 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045ff7ca8,0xffff800045ff6a90 process=0xffff800045ff89b8 user=0xffff80003a6ed000, vmspace=0xffff800001c4d018 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 44142 379455 11856 0 2 0 0 syz-executor 44142 47258 11856 0 3 0 0x4000080 fsleep syz-executor 44142 112197 11856 0 3 0 0x4000080 fsleep syz-executor 83601 402305 34737 0 2 0 0 syz-executor 83601 442889 34737 0 2 0 0x4000000 syz-executor *83601 450965 34737 0 7 0 0x4000010 syz-executor 95618 437072 20246 0 2 0 0 syz-executor 47582 374556 86437 0 2 0 0 syz-executor 47582 500088 86437 0 2 0 0x4000000 syz-executor 81986 178630 7601 0 2 0 0 syz-executor 81986 235447 7601 0 3 0 0x4000080 fsleep syz-executor 81986 23728 7601 0 3 0 0x4000080 fsleep syz-executor 81986 460739 7601 0 3 0 0x4000080 fsleep syz-executor 98866 258214 91309 0 2 0 0 syz-executor 98866 184517 91309 0 3 0 0x4000080 piperd syz-executor 41349 268829 13778 0 3 0x2 0x80 nanoslp syz-executor 86437 345268 13778 0 2 0x2 0xc80 syz-executor 91309 448156 13778 0 3 0x2 0x80 nanoslp syz-executor 7601 294661 13778 0 2 0x2 0xc80 syz-executor 38608 371534 13778 0 3 0x2 0x80 piperd syz-executor 11856 192489 13778 0 3 0x2 0x80 nanoslp syz-executor 34737 181833 13778 0 3 0x2 0x80 nanoslp syz-executor 20246 106430 13778 0 2 0x2 0xc80 syz-executor 13778 17510 63339 0 2 0x2 0 syz-executor 63339 358129 1 0 3 0x100002 0x80 nanoslp ksh 87098 382929 1 0 2 0x10000002 0 sshd 72430 451542 26104 74 3 0x1100012 0x80 bpf pflogd 26104 53907 1 0 3 0 0x80 sbwait pflogd 19107 467181 78714 73 3 0x1100010 0x80 sbwait syslogd 78714 175617 1 0 2 0x100002 0x80 syslogd 82784 360674 1 0 3 0x100000 0x80 kqread resolvd 92903 99927 21408 77 3 0x100012 0x80 kqread dhcpleased 24330 389079 21408 77 3 0x100012 0x80 kqread dhcpleased 21408 74645 1 0 3 0 0x80 kqread dhcpleased 18210 436567 0 0 3 0x14000 0x200 bored smr 9727 508459 0 0 2 0x14000 0x200 zerothread 50383 306531 0 0 3 0x14000 0x200 aiodoned aiodoned 23772 483442 0 0 3 0x14000 0x200 syncer update 19582 472655 0 0 3 0x14000 0x200 cleaner cleaner 62643 96089 0 0 3 0x14000 0x200 reaper reaper 44 479944 0 0 3 0x14000 0x200 pgdaemon pagedaemon 90983 382621 0 0 3 0x14000 0x200 bored viomb 74249 40203 0 0 3 0x14000 0x40000200 acpi0 acpi0 56616 185657 0 0 3 0x14000 0x40000200 idle1 45355 89007 0 0 3 0x14000 0x200 bored softnet1 57934 247818 0 0 3 0x14000 0x200 bored softnet0 84552 295241 0 0 3 0x14000 0x200 bored systqmp 79121 60994 0 0 3 0x14000 0x200 bored systq 52132 193071 0 0 3 0x14000 0x200 tmoslp softclockmp 57813 414079 0 0 3 0x14000 0x40000200 tmoslp softclock 42849 366313 0 0 3 0x14000 0x40000200 idle0 1 199691 0 0 3 0x2 0 biowait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 83601 (syz-executor) thread 0xffff800045ff7248 (450965) exclusive rrwlock inode r = 0 (0xffff8000016e2db0) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 vn_lock+0xca sys/kern/vfs_vnops.c:576 #5 vrele+0x113 sys/kern/vfs_subr.c:836 #6 ktrsettrace+0x16c sys/kern/kern_ktrace.c:123 #7 ktrops+0x338 sys/kern/kern_ktrace.c:578 #8 doktrace+0xa72 ktrsetchildren sys/kern/kern_ktrace.c:607 [inline] #8 doktrace+0xa72 sys/kern/kern_ktrace.c:522 #9 sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:563 #10 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff85d52380) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0x1048 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 Process 1 (init) thread 0xffff800045fffc88 (199691) exclusive rrwlock inode r = 0 (0xffff800000d94418) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 vn_lock+0xca sys/kern/vfs_vnops.c:576 #5 uvn_io+0x579 sys/uvm/uvm_vnode.c:1226 #6 uvn_get+0x494 sys/uvm/uvm_vnode.c:1075 #7 uvm_fault_lower_io+0x5cd sys/uvm/uvm_fault.c:1612 #8 uvm_fault_lower+0x34e sys/uvm/uvm_fault.c:1381 #9 uvm_fault+0x3ef sys/uvm/uvm_fault.c:657 #10 upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:192 #11 usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:640 #12 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11056 12313K 12470K 166960K 12246 0 pcb 17 26K 27K 166960K 46 0 rtable 195 10K 13K 166960K 361 0 pf 30 21K 24K 166960K 54 0 ifaddr 35 10K 12K 166960K 46 0 ifgroup 47 2K 2K 166960K 57 0 sysctl 1 1K 13K 166960K 5 0 counters 66 41K 42K 166960K 72 0 ioctlops 0 0K 4K 166960K 1500 0 iov 0 0K 16K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1300 84K 84K 166960K 1481 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 16 57K 97K 166960K 240 0 sigio 0 0K 0K 166960K 2 0 proc 62 112K 193K 166960K 571 0 subproc 72 9K 9K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2 0 in_multi 77 5K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 55 384K 384K 166960K 55 0 exec 0 0K 2K 166960K 397 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 202 211K 244K 166960K 4079 0 UVM aobj 10 4K 4K 166960K 10 0 pinsyscall 1059 1750K 1761K 166960K 1439 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 10 0K 2K 166960K 29 0 temp 38 9163K 9172K 166960K 5351 0 kqueue 12 36K 57K 166960K 42 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 37 0 34 1 0 1 1 0 8 0 rtentry 176 112 0 23 6 0 6 6 0 8 0 unpcb 144 156 0 136 2 0 2 2 0 8 0 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 17 0 15 1 0 1 1 0 8 0 arp 136 18 0 4 1 0 1 1 0 8 0 inpcb 328 157 0 149 4 0 4 4 0 8 3 nd6 152 25 0 6 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 pfstitem 24 25 0 0 1 0 1 1 0 8 0 pfstkey 128 25 0 0 1 0 1 1 0 8 0 pfstate 448 25 0 0 3 0 3 3 0 8 0 pfrule 1360 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 453 0 88 29 0 29 29 0 8 2 art_table 40 454 0 88 5 0 5 5 0 8 0 art_node 32 112 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 72 5 0 2 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1783 0 308 93 0 93 93 0 8 0 ffsino 296 1783 0 308 114 0 114 114 0 8 0 nchpl 144 2126 0 417 64 0 64 64 0 8 0 vnodes 216 1924 0 0 107 0 107 107 0 8 0 namei 1024 6695 0 6695 1 0 1 1 0 8 1 percpumem 16 52 0 3 1 0 1 1 0 8 0 kstatmem 264 29 0 6 2 0 2 2 0 8 0 scxspl 216 7467 0 7465 3 2 1 2 1 8 0 plimitpl 152 32 0 17 1 0 1 1 0 8 0 sigapl 424 569 0 524 7 0 7 7 0 8 1 knotepl 120 118 0 0 4 0 4 4 0 8 0 kqueuepl 224 57 0 49 1 0 1 1 0 8 0 pipepl 344 152 0 124 3 0 3 3 0 8 0 fdescpl 528 553 0 526 3 0 3 3 0 8 0 filepl 160 2429 0 2215 12 0 12 12 0 8 1 lockfpl 104 52 0 50 1 0 1 1 0 8 0 lockfspl 48 26 0 24 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 43 0 26 1 0 1 1 0 8 0 ucredpl 104 317 0 303 1 0 1 1 0 8 0 zombiepl 144 526 0 524 1 0 1 1 0 8 0 processpl 1232 569 0 524 5 0 5 5 0 8 1 procpl 664 729 0 675 6 0 6 6 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 752 352 0 321 8 0 8 8 0 8 3 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 111 0 0 14 0 14 14 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mextrefs 64 21 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 177 0 0 12 0 12 12 0 8 0 bufpl 272 2483 0 105 159 0 159 159 0 8 0 anonpl 32 3918 0 0 32 0 32 32 0 222 0 amapchunkpl 152 11799 0 11386 21 0 21 21 0 158 2 amappl16 200 2126 0 2103 5 3 2 5 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 440 0 439 1 0 1 1 0 8 0 amappl13 176 132 0 123 1 0 1 1 0 8 0 amappl12 168 816 0 791 2 0 2 2 0 8 0 amappl11 160 10 0 9 3 2 1 1 0 8 0 amappl10 152 65 0 51 1 0 1 1 0 8 0 amappl9 144 281 0 281 1 1 0 1 0 8 0 amappl8 136 104 0 102 1 0 1 1 0 8 0 amappl7 128 164 0 153 1 0 1 1 0 8 0 amappl6 120 157 0 156 1 0 1 1 0 8 0 amappl5 112 114 0 106 1 0 1 1 0 8 0 amappl4 104 311 0 293 1 0 1 1 0 8 0 amappl3 96 2201 0 2099 4 0 4 4 0 8 0 amappl2 88 581 0 535 2 0 2 2 0 8 0 amappl1 80 11012 0 10648 16 0 16 16 0 8 5 amappl 88 3308 0 3167 4 0 4 4 0 92 0 uvmvnodes 80 99 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 24 553 0 526 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 553 0 526 1 0 1 1 0 8 0 vmmpekpl 168 6580 0 6543 2 0 2 2 0 8 0 vmmpepl 168 44665 0 43217 88 0 88 88 0 357 11 vmsppl 488 552 0 525 5 0 5 5 0 8 1 rwobjpl 80 16187 0 15379 25 0 25 25 0 8 2 pdppl 4096 1114 0 1050 100 28 72 88 0 8 8 pvpl 32 10643 0 0 87 1 86 86 0 265 0 pmappl 256 552 0 525 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 120 431 0 32 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84d8d160) at panic+0x270 sys/kern/subr_prf.c:198 sleep_setup(ffff800001bdf660,11,ffffffff84692f80) at sleep_setup+0x3b2 sys/kern/kern_synch.c:296 tsleep_nsec(ffff800001bdf660,11,ffffffff84692f80,ffffffffffffffff) at tsleep_nsec+0x29c sys/kern/kern_synch.c:153 biowait(ffff800001bdf660) at biowait+0xe6 sys/kern/vfs_bio.c:1110 bwrite(ffff800001bdf660) at bwrite+0x4e1 sys/kern/vfs_bio.c:625 ffs_update(ffff8000016e2d10,1) at ffs_update+0x619 sys/ufs/ffs/ffs_inode.c:111 ffs_truncate(ffff8000016e2d10,0,0,ffffffffffffffff) at ffs_truncate+0x12f0 sys/ufs/ffs/ffs_inode.c:-1 ufs_inactive(ffff80003a6f81a0) at ufs_inactive+0x2cb sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(ffff800001d99cc8,ffff800045ff7248) at VOP_INACTIVE+0x1bb sys/kern/vfs_vops.c:498 vrele(ffff800001d99cc8) at vrele+0x16a sys/kern/vfs_subr.c:845 ktrsettrace(ffffffff85e2cd80,ff7ea096,ffff800001d89710,ffff8000001195b0) at ktrsettrace+0x16c sys/kern/kern_ktrace.c:123 ktrops(ffff800045ff7248,ffffffff85e2cd80,0,ff7ea096,ffff800001d89710,ffff8000001195b0) at ktrops+0x338 sys/kern/kern_ktrace.c:578 doktrace(ffff800001d89710,4,7f7ea096,0,ffff800045ff7248) at doktrace+0xa72 ktrsetchildren sys/kern/kern_ktrace.c:607 [inline] doktrace(ffff800001d89710,4,7f7ea096,0,ffff800045ff7248) at doktrace+0xa72 sys/kern/kern_ktrace.c:522 sys_ktrace(ffff800045ff7248,ffff80003a6f8820,ffff80003a6f8780) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:563 syscall(ffff80003a6f8820) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a6f8820) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x36896726f90, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028fe3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85d51b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85d51b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 exit1(ffff80003a6fed20,0,0,1) at exit1+0xa5d sys/kern/kern_exit.c:261 sys_exit(ffff80003a6fed20,ffff80003bb405a0,ffff80003bb40500) at sys_exit+0x4a syscall(ffff80003bb405a0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb405a0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x747862097930, count: 7 ddb{1}> trace x86_ipi_db(ffff800028fe3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff85d51b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85d51b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 exit1(ffff80003a6fed20,0,0,1) at exit1+0xa5d sys/kern/kern_exit.c:261 sys_exit(ffff80003a6fed20,ffff80003bb405a0,ffff80003bb40500) at sys_exit+0x4a syscall(ffff80003bb405a0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb405a0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x747862097930, count: -8 ddb{1}>