login: panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) solock Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e5094) at panic+0x15e sys/kern/subr_prf.c:218 witness_checkorder(fffffd8075a1c208,9,0) at witness_checkorder+0x1188 sys/kern/subr_witness.c:833 rw_enter_write(fffffd8075a1c1f8) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 solock(fffffd8075a1c1f0) at solock+0x97 sys/kern/uipc_socket2.c:299 rtm_senddesync_timer(fffffd8075a1c1f0) at rtm_senddesync_timer+0x1a sys/net/rtsock.c:454 timeout_run(fffffd806f502b58) at timeout_run+0xcc sys/kern/kern_timeout.c:674 softclock_process_tick_timeout(fffffd806f502b58,0) at softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:752 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff826ceff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 2 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 acquiring blockable sleep lock with spinlock or critical section held (rwlock) solock ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e5094) at panic+0x15e sys/kern/subr_prf.c:218 witness_checkorder(fffffd8075a1c208,9,0) at witness_checkorder+0x1188 sys/kern/subr_witness.c:833 rw_enter_write(fffffd8075a1c1f8) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 solock(fffffd8075a1c1f0) at solock+0x97 sys/kern/uipc_socket2.c:299 rtm_senddesync_timer(fffffd8075a1c1f0) at rtm_senddesync_timer+0x1a sys/net/rtsock.c:454 timeout_run(fffffd806f502b58) at timeout_run+0xcc sys/kern/kern_timeout.c:674 softclock_process_tick_timeout(fffffd806f502b58,0) at softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:752 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff826ceff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002116f7c0 rbx 0xffff80002116f7d0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81c643c5 kprintf+0x145 r9 0x1 r10 0xaa89d48f3ca1d940 r11 0x4c35da912deb524 r12 0x3000000008 r13 0xffff80002116f870 r14 0x100 r15 0x1 rip 0xffffffff81bca908 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002116f7b0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (idle0) pid=364449 stat=onproc flags process=14000 proc=40000200 pri=0, usrpri=50, nice=20 forw=0x67961fc8c240a40f, list=0xffff800021169ce0,0xffff8000211697b0 process=0xffff8000ffffee68 user=0xffff80002116a000, vmspace=0xffffffff82914f58 estcpu=0, cpticks=8293, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46147 308985 2355 32767 3 0x90 nanoslp syz-executor.0 46147 405624 2355 32767 3 0x4000090 msgwait syz-executor.0 46147 14964 2355 32767 3 0x4000090 fsleep syz-executor.0 23741 313049 94350 32767 3 0x90 piperd syz-executor.1 94350 65236 32859 0 3 0x82 wait syz-executor.1 2355 288921 80656 32767 3 0x90 nanoslp syz-executor.0 80656 259846 32859 0 3 0x82 wait syz-executor.0 32859 369033 75000 0 3 0x82 thrsleep syz-fuzzer 32859 39678 75000 0 3 0x4000082 thrsleep syz-fuzzer 32859 348688 75000 0 3 0x4000082 thrsleep syz-fuzzer 32859 98543 75000 0 3 0x4000082 thrsleep syz-fuzzer 32859 126465 75000 0 3 0x4000082 thrsleep syz-fuzzer 32859 345631 75000 0 3 0x4000082 kqread syz-fuzzer 32859 249077 75000 0 3 0x4000082 thrsleep syz-fuzzer 75000 454015 9394 0 3 0x10008a sigsusp ksh 9394 226205 82275 0 3 0x92 select sshd 42236 358397 1 0 3 0x100083 ttyin getty 82275 299848 1 0 3 0x80 select sshd 48691 362920 52500 73 3 0x100090 kqread syslogd 52500 478617 1 0 3 0x100082 netio syslogd 74539 175746 1 77 3 0x100090 poll dhclient 23714 70155 1 0 3 0x80 poll dhclient 71420 229135 0 0 3 0x14200 bored smr 67783 225437 0 0 3 0x14200 pgzero zerothread 51464 455533 0 0 3 0x14200 aiodoned aiodoned 26621 300332 0 0 3 0x14200 syncer update 83421 32012 0 0 3 0x14200 cleaner cleaner 30118 145489 0 0 3 0x14200 reaper reaper 53930 4827 0 0 3 0x14200 pgdaemon pagedaemon 23461 351082 0 0 3 0x14200 bored crynlk 12190 455340 0 0 3 0x14200 bored crypto 42337 94529 0 0 3 0x14200 bored viomb 97029 180341 0 0 3 0x40014200 acpi0 acpi0 56386 265037 0 0 7 0x40014200 idle1 52567 407023 0 0 3 0x14200 bored softnet 97879 108705 0 0 3 0x14200 bored systqmp 84472 294639 0 0 3 0x14200 bored systq 23769 303845 0 0 3 0x40014200 bored softclock * 1893 364449 0 0 7 0x40014200 idle0 1 76742 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: shared mutex timeout r = 0 (0xffffffff82721dc8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 timeout_run+0xb7 sys/kern/kern_timeout.c:670 #2 softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721 #3 softclock+0x11a sys/kern/kern_timeout.c:752 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x1f #6 acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 #7 sched_idle+0x417 sys/kern/kern_sched.c:178 #8 proc_trampoline+0x1c Process 1893 (idle0) thread 0xffff800021169a40 (364449) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8290dfb0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:90 #2 Xsoftclock+0x1f #3 acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 #4 sched_idle+0x417 sys/kern/kern_sched.c:178 #5 proc_trampoline+0x1c shared mutex timeout r = 0 (0xffffffff82721dc8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 timeout_run+0xb7 sys/kern/kern_timeout.c:670 #2 softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721 #3 softclock+0x11a sys/kern/kern_timeout.c:752 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x1f #6 acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 #7 sched_idle+0x417 sys/kern/kern_sched.c:178 #8 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9477 6349K 6349K 78643K 10567 0 pcb 13 8K 8K 78643K 13 0 rtable 105 3K 3K 78643K 447 0 ifaddr 39 10K 10K 78643K 39 0 counters 44 34K 34K 78643K 44 0 ioctlops 0 0K 2K 78643K 20 0 iov 0 0K 0K 78643K 25 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 1 0 vnodes 1216 76K 76K 78643K 1221 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 18 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 33K 78643K 4456 0 proc 48 50K 70K 78643K 355 0 subproc 34 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 33 2K 2K 78643K 33 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 31 148K 148K 78643K 31 0 exec 0 0K 2K 78643K 3014 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 364 41K 41K 78643K 53634 0 UVM aobj 7 2K 2K 78643K 7 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 5 0K 0K 78643K 9 0 temp 83 3973K 4037K 78643K 10659 0 kqueue 3 4K 8K 78643K 9 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 170 0 167 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 100 0 88 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 2226 0 2226 4 4 0 4 0 8 0 tcpcb 736 13 0 9 1 0 1 1 0 8 0 arp 64 6 0 0 1 0 1 1 0 8 0 inpcb 304 36 0 30 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 kcovpl 48 2 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5844 0 4447 88 0 88 88 0 8 0 ffsino 272 5844 0 4447 94 0 94 94 0 8 0 nchpl 144 15667 0 14067 60 0 60 60 0 8 0 uvmvnodes 72 5887 0 0 108 0 108 108 0 8 0 vnodes 224 5887 0 0 347 0 347 347 0 8 0 namei 1024 24654 0 24654 2 1 1 1 0 8 1 percpumem 16 33 0 0 1 0 1 1 0 8 0 scxspl 216 31398 0 31398 10 9 1 8 0 8 1 plimitpl 152 16 0 7 1 0 1 1 0 8 0 sigapl 424 4643 0 4611 4 0 4 4 0 8 0 futexpl 56 36424 0 36423 1 0 1 1 0 8 0 knotepl 112 70 0 50 1 0 1 1 0 8 0 kqueuepl 168 5095 0 5092 1 0 1 1 0 8 0 pipepl 336 90 0 79 4 2 2 2 0 8 1 fdescpl 496 4627 0 4611 3 0 3 3 0 8 0 filepl 152 11005 0 10901 8 3 5 5 0 8 1 lockfpl 104 28 0 26 1 0 1 1 0 8 0 lockfspl 48 11 0 9 1 0 1 1 0 8 0 sessionpl 144 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 105 0 96 1 0 1 1 0 8 0 zombiepl 144 4611 0 4611 2 1 1 1 0 8 1 processpl 1080 4643 0 4611 5 2 3 3 0 8 0 procpl 672 9430 0 9390 5 1 4 4 0 8 0 sockpl 480 308 0 287 4 1 3 4 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 552 0 0 68 0 68 68 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 602 0 0 35 0 35 35 0 8 0 bufpl 280 7707 0 1443 448 0 448 448 0 8 0 anonpl 24 1187534 0 1127840 391 2 389 390 0 186 0 amapchunkpl 152 127774 0 125904 77 3 74 76 0 158 0 amappl16 200 7744 0 5453 123 2 121 122 0 8 0 amappl15 192 53 0 46 1 0 1 1 0 8 0 amappl14 184 7 0 5 1 0 1 1 0 8 0 amappl13 176 26 0 24 1 0 1 1 0 8 0 amappl12 168 39 0 29 1 0 1 1 0 8 0 amappl11 160 2257 0 2244 1 0 1 1 0 8 0 amappl10 152 28 0 21 1 0 1 1 0 8 0 amappl9 144 2495 0 2493 2 1 1 1 0 8 0 amappl8 136 296 0 256 2 0 2 2 0 8 0 amappl7 128 2272 0 2262 1 0 1 1 0 8 0 amappl6 120 98 0 78 1 0 1 1 0 8 0 amappl5 112 6776 0 6763 1 0 1 1 0 8 0 amappl4 104 458 0 431 1 0 1 1 0 8 0 amappl3 96 47 0 43 1 0 1 1 0 8 0 amappl2 88 402 0 356 2 0 2 2 0 8 0 amappl1 80 80159 0 79756 13 4 9 11 0 8 0 amappl 88 53322 0 53017 8 0 8 8 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 64 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 4627 0 4611 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4627 0 4611 1 0 1 1 0 8 0 vmmpekpl 168 23008 0 22988 2 0 2 2 0 8 0 vmmpepl 168 524433 0 520655 274 92 182 273 0 357 12 vmsppl 368 4626 0 4611 2 0 2 2 0 8 0 rwobjpl 56 89478 0 86368 45 0 45 45 0 8 0 pdppl 4096 9261 0 9222 63 22 41 45 0 8 2 pvpl 32 2815043 0 2751931 553 3 550 553 0 265 0 pmappl 232 4626 0 4611 2 1 1 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 381 0 27 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e5094) at panic+0x15e sys/kern/subr_prf.c:218 witness_checkorder(fffffd8075a1c208,9,0) at witness_checkorder+0x1188 sys/kern/subr_witness.c:833 rw_enter_write(fffffd8075a1c1f8) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 solock(fffffd8075a1c1f0) at solock+0x97 sys/kern/uipc_socket2.c:299 rtm_senddesync_timer(fffffd8075a1c1f0) at rtm_senddesync_timer+0x1a sys/net/rtsock.c:454 timeout_run(fffffd806f502b58) at timeout_run+0xcc sys/kern/kern_timeout.c:674 softclock_process_tick_timeout(fffffd806f502b58,0) at softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:752 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff826ceff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d58ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d58ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5