uvm_fault(0xffffffff83a1c0d0, 0x0, 0, 2) -> e kernel: page fault trap, code=2 Stopped at pool_gc_pages+0x2bf: movq %rax,0(%rcx) TID PID UID PRFLAGS PFLAGS CPU COMMAND *309001 85968 0 0x14000 0x200 0 systqmp pool_gc_pages(0) at pool_gc_pages+0x2bf pool_p_remove sys/kern/subr_pool.c:1055 [inline] pool_gc_pages(0) at pool_gc_pages+0x2bf sys/kern/subr_pool.c:1584 taskq_thread(ffffffff8383f870) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: 13 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: uvm_fault(0xffffffff83a1c0d0, 0x0, 0, 2) -> e ddb{0}> trace pool_gc_pages(0) at pool_gc_pages+0x2bf pool_p_remove sys/kern/subr_pool.c:1055 [inline] pool_gc_pages(0) at pool_gc_pages+0x2bf sys/kern/subr_pool.c:1584 taskq_thread(ffffffff8383f870) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -2 ddb{0}> show registers rdi 0 rsi 0xffffffff8393a1c0 inpcb_pool+0x68 rbp 0xffff80002a20a090 rbx 0xfffffd806c728f90 rdx 0xffffffff8393a1c0 inpcb_pool+0x68 rcx 0 rax 0 r8 0xffffffffffffffff r9 0 r10 0x8ef37d0e1b3bac00 r11 0x6d73c49e90f393e r12 0x1dcd65000 r13 0xffffffff8393a160 inpcb_pool+0x8 r14 0xf90 r15 0xffffffff8393a158 inpcb_pool rip 0xffffffff823101bf pool_gc_pages+0x2bf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a20a050 ss 0x10 pool_gc_pages+0x2bf: movq %rax,0(%rcx) ddb{0}> show proc PROC (systqmp) tid=309001 pid=85968 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffe298,0xffff8000ffffea70 process=0xffff8000ffff9810 user=0xffff80002a205000, vmspace=0xffffffff83a1c0d0 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8071 233398 46342 0 2 0 syz-executor 8071 306592 46342 0 2 0x4000000 syz-executor 50300 386002 82191 0 2 0 syz-executor 50300 299128 82191 0 3 0x4000080 fsleep syz-executor 22507 245503 73945 0 2 0xc80 syz-executor 22507 471741 73945 0 3 0x4000080 netacc syz-executor 22507 163384 73945 0 3 0x4000080 fsleep syz-executor 17492 98278 25247 0 2 0xc80 syz-executor 17492 240963 25247 0 3 0x4000080 lockf syz-executor 17492 388608 25247 0 3 0x4000080 fsleep syz-executor 44525 321869 1 0 3 0x100083 ttyin getty 35546 116114 10637 0 3 0x82 wait syz-executor 27004 489234 0 0 3 0x14280 nfsidl nfsio 88156 39648 0 0 3 0x14280 nfsidl nfsio 77612 230202 0 0 3 0x14280 nfsidl nfsio 29814 198271 0 0 3 0x14280 nfsidl nfsio 22678 413950 0 0 3 0x14280 nfsidl nfsio 8096 423984 0 0 3 0x14280 nfsidl nfsio 74643 505036 0 0 3 0x14280 nfsidl nfsio 50677 57282 0 0 3 0x14280 nfsidl nfsio 59125 407559 0 0 3 0x14280 nfsidl nfsio 72908 360506 0 0 3 0x14280 nfsidl nfsio 43767 332087 0 0 3 0x14280 nfsidl nfsio 42570 334975 0 0 3 0x14280 nfsidl nfsio 28797 111968 0 0 3 0x14280 nfsidl nfsio 33872 65252 0 0 3 0x14280 nfsidl nfsio 5504 17834 0 0 3 0x14280 nfsidl nfsio 83666 382708 0 0 3 0x14280 nfsidl nfsio 42941 95656 0 0 3 0x14280 nfsidl nfsio 80443 325192 0 0 3 0x14280 nfsidl nfsio 40032 451986 0 0 3 0x14280 nfsidl nfsio 46958 165272 0 0 3 0x14280 nfsidl nfsio 74906 224579 10637 0 2 0xc82 syz-executor 15798 295690 10637 0 2 0x2 syz-executor 73945 476673 10637 0 2 0xc82 syz-executor 46342 10236 10637 0 2 0xc82 syz-executor 82191 370390 10637 0 2 0xc82 syz-executor 25247 102518 10637 0 2 0xc82 syz-executor 46748 266665 10637 0 3 0x82 piperd syz-executor 10637 425761 2894 0 2 0x2 syz-executor 2894 433452 61755 0 3 0x10008a sigsusp ksh 61755 503902 50334 0 3 0x98 kqread sshd-session 50334 19397 54932 0 3 0x92 kqread sshd-session 54932 154560 1 0 3 0x88 kqread sshd 87137 428322 20295 74 2 0x1100012 pflogd 20295 16326 1 0 3 0x80 sbwait pflogd 24365 193937 20722 73 3 0x1100090 kqread syslogd 20722 377142 1 0 3 0x100082 sbwait syslogd 78332 494209 1 0 3 0x100080 kqread resolvd 41404 323727 92596 77 3 0x100092 kqread dhcpleased 67055 106749 92596 77 3 0x100092 kqread dhcpleased 92596 487043 1 0 3 0x80 kqread dhcpleased 5169 272177 0 0 3 0x14200 bored smr 94931 139611 0 0 2 0x14200 zerothread 98218 462500 0 0 3 0x14200 aiodoned aiodoned 87878 135215 0 0 3 0x14200 syncer update 92659 113015 0 0 3 0x14200 cleaner cleaner 46699 290049 0 0 3 0x14200 reaper reaper 20210 523264 0 0 3 0x14200 pgdaemon pagedaemon 36701 462078 0 0 3 0x14200 bored viomb 61493 393433 0 0 3 0x40014200 acpi0 acpi0 64435 210967 0 0 7 0x40014200 idle1 78015 106729 0 0 3 0x14200 bored softnet1 33047 297431 0 0 3 0x14200 bored softnet0 *85968 309001 0 0 7 0x14200 systqmp 25984 367270 0 0 3 0x14200 bored systq 36885 328670 0 0 2 0x14200 softclockmp 64340 93428 0 0 2 0x40014200 softclock 71009 33304 0 0 3 0x40014200 idle0 1 109622 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex inpcb r = 0 (0xffffffff8393a170) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1aa sys/kern/kern_lock.c:-1 #2 pool_gc_pages+0xf4 pl_enter_try sys/kern/subr_pool.c:109 [inline] #2 pool_gc_pages+0xf4 sys/kern/subr_pool.c:1576 #3 taskq_thread+0x157 sys/kern/kern_task.c:446 #4 proc_trampoline+0x10 Process 85968 (systqmp) thread 0xffff8000ffffe530 (309001) shared rwlock pools r = 0 (0xffffffff8383e7b8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 pool_gc_pages+0x2e sys/kern/subr_pool.c:1568 #3 taskq_thread+0x157 sys/kern/kern_task.c:446 #4 proc_trampoline+0x10 shared rwlock systqmp r = 0 (0xffffffff8383f8e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 exclusive mutex inpcb r = 0 (0xffffffff8393a170) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1aa sys/kern/kern_lock.c:-1 #2 pool_gc_pages+0xf4 pl_enter_try sys/kern/subr_pool.c:109 [inline] #2 pool_gc_pages+0xf4 sys/kern/subr_pool.c:1576 #3 taskq_thread+0x157 sys/kern/kern_task.c:446 #4 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11066 12085K 12343K 166960K 13338 0 pcb 20 16K 21K 166960K 637 0 rtable 178 10K 12K 166960K 771 0 pf 33 17K 81K 166960K 224 0 ifaddr 32 5K 8K 166960K 165 0 ifgroup 51 2K 2K 166960K 275 0 sysctl 4 1K 9K 166960K 14 0 counters 68 36K 38K 166960K 316 0 ioctlops 0 0K 4K 166960K 2021 0 iov 0 0K 24K 166960K 122 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1325 83K 85K 166960K 2369 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 15 0K 0K 166960K 73 0 dirhash 12 2K 2K 166960K 48 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 1843 0 sigio 0 0K 0K 166960K 60 0 proc 72 115K 164K 166960K 805 0 subproc 72 4K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 201 0 in_multi 56 4K 8K 166960K 234 0 ether_multi 1 0K 0K 166960K 13 0 mrt 0 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 984 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 239 172K 181K 166960K 18014 0 UVM aobj 44 10K 10K 166960K 51 0 pinsyscall 41 82K 108K 166960K 3160 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 115 0 NDP 12 0K 1K 166960K 117 0 temp 78 8688K 8763K 166960K 90784 0 kqueue 15 24K 32K 166960K 341 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 242 0 239 2 1 1 2 0 8 0 rtentry 176 212 0 150 6 1 5 6 0 8 0 unpcb 144 1387 0 1369 9 5 4 6 0 8 3 syncache 336 13 0 13 3 2 1 1 0 8 1 tcpqe 32 6 0 6 2 1 1 1 0 8 1 tcpcb 736 435 0 422 2 0 2 2 0 8 0 arp 136 30 0 19 1 0 1 1 0 8 0 inpcb 328 1840 0 1821 14 10 4 9 0 8 2 inpcb: pool(0xffffffff8393a158:inpcb): page inconsistency: page 0x0; at page head addr 0xfffffd806c728f90 (p 0xfffffd806c728000) nd6 152 52 0 36 2 0 2 2 0 8 0 pkpcb 40 16 0 16 2 2 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 100 0 99 1 0 1 1 0 8 0 pppxif 1504 13 0 13 3 3 0 1 0 8 0 pffrag 232 18 0 4 1 0 1 1 0 482 0 pffrnode 88 16 0 3 1 0 1 1 0 8 0 pffrent 40 26 0 12 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 448 1 0 0 1 0 1 1 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 986 0 710 30 6 24 30 0 8 4 art_table 40 988 0 710 5 0 5 5 0 8 0 art_node 32 211 0 155 1 0 1 1 0 8 0 sysvmsgpl 40 72 0 69 1 0 1 1 0 8 0 semapl 112 66 0 53 1 0 1 1 0 8 0 shmpl 112 42 0 4 2 0 2 2 0 8 0 dirhash 1024 41 0 24 3 0 3 3 0 8 0 dino2pl 256 4741 0 3235 96 0 96 96 0 8 0 ffsino 296 4741 0 3235 117 0 117 117 0 8 0 nchpl 144 7162 0 5444 64 0 64 64 0 8 0 rtmask 32 15 0 15 4 3 1 1 0 8 1 vnodes 216 5168 0 0 288 0 288 288 0 8 0 namei 1024 24433 0 24433 2 1 1 2 0 8 1 percpumem 16 173 0 124 1 0 1 1 0 8 0 vcpupl 3968 4 0 1 1 0 1 1 0 8 0 vmpool 848 6 0 3 1 0 1 1 0 8 0 kstatmem 264 186 0 160 3 0 3 3 0 8 1 scsiplug 72 7 0 7 3 2 1 1 0 8 1 scxspl 216 47614 0 47613 12 10 2 8 1 8 1 plimitpl 152 604 0 587 1 0 1 1 0 8 0 sigapl 424 2199 0 2133 10 2 8 8 0 8 0 knotepl 120 563 0 0 17 0 17 17 0 8 0 kqueuepl 224 740 0 728 9 7 2 9 0 8 1 pipepl 344 297 0 270 6 3 3 6 0 8 0 fdescpl 528 2139 0 2109 3 0 3 3 0 8 0 filepl 160 12685 0 12460 19 6 13 16 0 8 0 lockfpl 104 542 0 538 1 0 1 1 0 8 0 lockfspl 48 188 0 185 1 0 1 1 0 8 0 sessionpl 144 39 0 30 1 0 1 1 0 8 0 pgrppl 48 73 0 56 1 0 1 1 0 8 0 ucredpl 104 1947 0 1933 1 0 1 1 0 8 0 zombiepl 144 2135 0 2133 1 0 1 1 0 8 0 processpl 1232 2199 0 2133 6 0 6 6 0 8 0 procpl 664 4923 0 4851 9 1 8 8 0 8 0 sosppl 176 4 0 4 2 2 0 1 0 8 0 sockpl 752 3541 0 3500 26 14 12 17 0 8 6 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 33 0 0 4 0 4 4 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 1254 0 0 79 0 79 79 0 8 0 bufpl 280 18901 0 12765 439 0 439 439 0 8 0 anonpl 32 17903 0 0 145 0 145 145 0 246 0 amapchunkpl 152 61152 0 60681 37 5 32 32 0 158 9 amappl16 200 7835 0 7802 72 58 14 47 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 11 0 11 1 1 0 1 0 8 0 amappl13 176 484 0 483 1 0 1 1 0 8 0 amappl12 168 2599 0 2558 3 0 3 3 0 8 0 amappl11 160 8 0 8 2 2 0 1 0 8 0 amappl10 152 58 0 43 1 0 1 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 30 0 27 1 0 1 1 0 8 0 amappl7 128 113 0 111 1 0 1 1 0 8 0 amappl6 120 348 0 334 1 0 1 1 0 8 0 amappl5 112 86 0 76 1 0 1 1 0 8 0 amappl4 104 513 0 484 1 0 1 1 0 8 0 amappl3 96 10952 0 10861 4 1 3 3 0 8 0 amappl2 88 2342 0 2263 2 0 2 2 0 8 0 amappl1 80 19458 0 18876 15 1 14 15 0 8 0 amappl 88 16892 0 16733 6 1 5 5 0 92 0 uvmvnodes 80 157 0 0 4 0 4 4 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 2 0 2 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 128 254 0 254 2 2 0 1 0 8 0 dma64 64 7 0 7 2 2 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 50 0 7 1 0 1 1 0 8 0 uaddrrnd 24 2139 0 2109 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2139 0 2109 1 0 1 1 0 8 0 vmmpekpl 168 17892 0 17833 4 0 4 4 0 8 0 vmmpepl 168 143689 0 141817 124 26 98 124 0 357 5 vmsppl 488 2138 0 2109 6 1 5 5 0 8 0 rwobjpl 80 39921 0 38794 43 13 30 41 0 8 0 pdppl 4096 4297 0 4227 109 35 74 85 0 8 4 pvpl 32 24141 0 0 196 1 195 195 0 265 0 pmappl 256 2144 0 2112 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 358 0 48 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pool_gc_pages(0) at pool_gc_pages+0x2bf pool_p_remove sys/kern/subr_pool.c:1055 [inline] pool_gc_pages(0) at pool_gc_pages+0x2bf sys/kern/subr_pool.c:1584 taskq_thread(ffffffff8383f870) at taskq_thread+0x157 sys/kern/kern_task.c:446 end trace frame: 0x0, count: -2 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299ddff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299ddff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5