uvm_fault(0xffffffff835901d0, 0x0, 0, 2) -> e kernel: page fault trap, code=2 Stopped at pool_gc_pages+0x2c5: movq %rax,0(%rcx) TID PID UID PRFLAGS PFLAGS CPU COMMAND 73003 97529 0 0x14000 0x200 1 reaper *377595 31389 0 0x14000 0x200 0 systqmp pool_gc_pages(0) at pool_gc_pages+0x2c5 pool_p_remove sys/kern/subr_pool.c:1049 [inline] pool_gc_pages(0) at pool_gc_pages+0x2c5 sys/kern/subr_pool.c:1576 taskq_thread(ffffffff834c9000) at taskq_thread+0x157 sys/kern/kern_task.c:448 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(0xffffffff835901d0, 0x0, 0, 2) -> e ddb{0}> trace pool_gc_pages(0) at pool_gc_pages+0x2c5 pool_p_remove sys/kern/subr_pool.c:1049 [inline] pool_gc_pages(0) at pool_gc_pages+0x2c5 sys/kern/subr_pool.c:1576 taskq_thread(ffffffff834c9000) at taskq_thread+0x157 sys/kern/kern_task.c:448 end trace frame: 0x0, count: -2 ddb{0}> show registers rdi 0 rsi 0xf90 rbp 0xffff800029fadae0 rbx 0xf90 rdx 0 rcx 0 rax 0 r8 0x380 r9 0 r10 0x5d4c1845f3e97786 r11 0xd652f82ed494f14a r12 0x1dcd65000 r13 0xfffffd8060623f90 r14 0 r15 0xffffffff83547878 rtpcb_pool rip 0xffffffff82446025 pool_gc_pages+0x2c5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800029fadaa0 ss 0x10 pool_gc_pages+0x2c5: movq %rax,0(%rcx) ddb{0}> show proc PROC (systqmp) tid=377595 pid=31389 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffea20,0xffff8000ffffe010 process=0xffff800029f8d220 user=0xffff800029fa8000, vmspace=0xffffffff835901d0 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=6, intr=3 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 89972 207595 8498 0 2 0x8000000 syz-executor 70145 367430 29980 0 2 0x8000000 syz-executor 70145 477399 29980 0 2 0xc000000 syz-executor 54948 487711 45821 0 2 0x8000000 syz-executor 54948 348274 45821 0 3 0xc000080 fsleep syz-executor 60441 94849 78518 0 2 0x8000000 syz-executor 60441 142906 78518 0 3 0xc000080 fsleep syz-executor 54399 223023 79430 0 3 0x8003000 suspend syz-executor 54399 367881 79430 0 2 0xc081080 syz-executor 49215 336848 68569 0 3 0x8003000 suspend syz-executor 49215 90979 68569 0 2 0xc081000 syz-executor 2677 248317 61133 0 2 0x8000002 syz-executor 78518 406299 61133 0 2 0x8000482 syz-executor 68569 467521 61133 0 2 0x8000482 syz-executor 45821 52107 61133 0 2 0x8000482 syz-executor 8498 49381 61133 0 2 0x8000482 syz-executor 38865 31627 61133 0 2 0x8000482 syz-executor 79430 216818 61133 0 3 0x8000082 nanoslp syz-executor 29980 101048 61133 0 3 0x8000082 nanoslp syz-executor 29241 14711 0 0 3 0x14200 bored sosplice 61133 190576 88318 0 2 0x8000002 syz-executor 88318 88550 3409 0 3 0x810008a sigsusp ksh 3409 239129 98264 0 3 0x18000098 kqread sshd-session 98264 54606 52570 0 3 0x18000092 kqread sshd-session 3561 338945 1 0 3 0x18100083 ttyopn getty 52570 344494 1 0 3 0x18000088 kqread sshd 76421 193813 47731 74 2 0x19100092 pflogd 47731 362066 1 0 3 0x18000080 sbwait pflogd 50065 308491 23867 73 2 0x19100010 syslogd 23867 305672 1 0 3 0x18100082 sbwait syslogd 86126 496331 1 0 3 0x18100080 kqread resolvd 2302 262062 79932 77 2 0x18100092 dhcpleased 21259 18951 79932 77 3 0x18100092 kqread dhcpleased 79932 397223 1 0 3 0x18000080 kqread dhcpleased 31622 10204 0 0 2 0x14200 smr 38527 153773 0 0 3 0x14200 pgzero zerothread 56973 519642 0 0 3 0x14200 aiodoned aiodoned 59285 5429 0 0 2 0x14600 update 55414 319348 0 0 3 0x14200 cleaner cleaner 97529 73003 0 0 7 0x14200 reaper 95114 278532 0 0 3 0x14200 pgdaemon pagedaemon 84062 199261 0 0 3 0x14200 bored viomb 10963 152248 0 0 3 0x40014200 acpi0 acpi0 50740 32166 0 0 3 0x40014200 idle1 14875 279403 0 0 3 0x14200 bored softnet3 92277 351163 0 0 3 0x14200 bored softnet2 11373 475265 0 0 3 0x14200 bored softnet1 17090 8371 0 0 2 0x14200 softnet0 *31389 377595 0 0 7 0x14200 systqmp 33010 38207 0 0 3 0x14200 bored systq 99077 487157 0 0 3 0x14200 tmoslp softclockmp 88565 282077 0 0 3 0x40014200 tmoslp softclock 99910 125431 0 0 3 0x40014200 idle0 1 429011 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex rtpcb r = 0 (0xffffffff83547888) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 pool_gc_pages+0xf0 pl_enter_try sys/kern/subr_pool.c:109 [inline] #2 pool_gc_pages+0xf0 sys/kern/subr_pool.c:1568 #3 taskq_thread+0x157 sys/kern/kern_task.c:448 #4 proc_trampoline+0x10 Process 49215 (syz-executor) thread 0xffff8000ffff2530 (90979) Process 2677 (syz-executor) thread 0xffff8000ffff2f50 (248317) Process 50065 (syslogd) thread 0xffff8000ffffd6d8 (308491) Process 97529 (reaper) thread 0xffff800029fd91c0 (73003) Process 31389 (systqmp) thread 0xffff8000ffffe798 (377595) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10237 10506K 10707K 166960K 13477 0 pcb 18 15K 16K 166960K 347 0 rtable 223 7K 8K 166960K 2361 0 pf 39 18K 22K 166960K 285 0 ifaddr 43 8K 8K 166960K 328 0 ifgroup 60 2K 2K 166960K 378 0 sysctl 3 0K 0K 166960K 3 0 counters 66 36K 36K 166960K 256 0 ioctlops 0 0K 4K 166960K 1650 0 iov 0 0K 26K 166960K 104 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1589 100K 100K 166960K 3757 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 10K 14K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 100 0 dirhash 15 2K 3K 166960K 21 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 89K 166960K 2099 0 sigio 0 0K 0K 166960K 19 0 proc 70 91K 140K 166960K 2281 0 subproc 104 6K 8K 166960K 884 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 250 0 in_multi 98 7K 7K 166960K 786 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 133 599K 599K 166960K 133 0 exec 0 0K 1K 166960K 1348 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 250 109K 133K 166960K 18039 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 42 84K 103K 166960K 4728 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 53 0 NDP 13 0K 2K 166960K 244 0 temp 75 6820K 6941K 166960K 66325 0 kqueue 14 20K 30K 166960K 238 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 268 0 265 2 1 1 2 0 8 0 rtpcb: pool(0xffffffff83547878:rtpcb): page inconsistency: page 0x0; at page head addr 0xfffffd8060623f90 (p 0xfffffd8060623000) rtentry 112 796 0 697 4 0 4 4 0 8 0 unpcb 144 1260 0 1242 12 6 6 7 0 8 5 syncache 336 3 0 3 2 2 0 1 0 8 0 tcpcb 808 502 0 496 17 13 4 8 0 8 3 arp 120 141 0 123 1 0 1 1 0 8 0 inpcb 336 2198 0 2182 28 20 8 8 0 8 5 nd6 136 215 0 190 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 68 0 60 1 0 1 1 0 8 0 ppxss 1168 32 0 32 6 5 1 1 0 8 1 pfstscr 40 2 0 2 2 2 0 1 0 8 0 pffrag 232 5 0 2 1 0 1 1 0 482 0 pffrnode 88 5 0 2 1 0 1 1 0 8 0 pffrent 40 6 0 3 1 0 1 1 0 8 0 pfosfp 40 1432 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1432 0 714 21 0 21 21 0 8 0 pfrktable 1344 2 0 1 1 0 1 1 0 8 0 pfanchor 1288 5 0 0 1 0 1 1 0 8 0 pftag 88 6 0 4 1 0 1 1 0 8 0 pfqueue 264 2 0 1 1 0 1 1 0 8 0 pfstitem 24 163 0 99 1 0 1 1 0 8 0 pfstkey 128 164 0 100 3 0 3 3 0 8 0 pfstate 376 162 0 99 7 0 7 7 0 8 0 pfrule 1344 29 0 22 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 3201 0 2759 33 4 29 29 0 8 1 art_table 32 3203 0 2759 4 0 4 4 0 8 0 art_node 16 793 0 705 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 98 0 88 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 4 3 0 3 3 0 8 0 dino2pl 256 3968 0 2343 102 0 102 102 0 8 0 ffsino 272 3968 0 2343 109 0 109 109 0 8 0 nchpl 144 5796 0 3999 67 0 67 67 0 8 0 uvmvnodes 80 5821 0 0 119 0 119 119 0 8 0 vnodes 216 5821 0 0 324 0 324 324 0 8 0 namei 1024 27179 0 27179 3 2 1 2 0 8 1 percpumem 16 142 0 95 1 0 1 1 0 8 0 vcpupl 3904 7 0 2 1 0 1 1 0 8 0 vmpool 696 10 0 5 1 0 1 1 0 8 0 kstatmem 264 216 0 190 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 45885 0 45885 15 11 4 8 1 8 4 plimitpl 152 495 0 477 1 0 1 1 0 8 0 sigapl 424 2280 0 2230 8 1 7 7 0 8 0 futexpl 64 19291 0 19288 5 4 1 1 0 8 0 knotepl 120 408 0 0 10 0 10 10 0 8 0 kqueuepl 216 621 0 609 11 6 5 5 0 8 4 pipepl 320 458 0 430 8 5 3 8 0 8 0 fdescpl 496 2259 0 2228 7 2 5 5 0 8 0 filepl 152 14954 0 14690 40 23 17 18 0 8 4 lockfpl 104 632 0 628 2 0 2 2 0 8 1 lockfspl 48 194 0 190 1 0 1 1 0 8 0 sessionpl 144 82 0 73 1 0 1 1 0 8 0 pgrppl 48 167 0 150 1 0 1 1 0 8 0 ucredpl 104 2728 0 2714 1 0 1 1 0 8 0 zombiepl 144 2233 0 2230 1 0 1 1 0 8 0 processpl 1160 2280 0 2230 5 1 4 5 0 8 0 procpl 648 4286 0 4231 8 2 6 7 0 8 0 srpgc 96 15 0 15 3 2 1 1 0 8 1 sosppl 168 13 0 13 6 5 1 1 0 8 1 sockpl 664 3805 0 3768 39 28 11 15 0 8 6 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 262 0 0 33 0 33 33 0 8 0 mtagpl 96 35 0 0 1 0 1 1 0 8 0 mbufpl 256 569 0 0 31 1 30 30 0 8 0 bufpl 280 12123 0 3659 605 0 605 605 0 8 0 anonpl 24 380259 0 372748 87 31 56 59 0 185 10 amapchunkpl 152 58805 0 58268 47 13 34 34 0 158 11 amappl16 200 7153 0 6902 41 27 14 17 0 8 0 amappl15 192 13 0 12 1 0 1 1 0 8 0 amappl14 184 235 0 222 1 0 1 1 0 8 0 amappl13 176 10 0 10 2 2 0 1 0 8 0 amappl12 168 3891 0 3861 4 2 2 3 0 8 0 amappl11 160 60 0 46 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 141 0 141 1 1 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 234 0 221 1 0 1 1 0 8 0 amappl6 120 767 0 766 1 0 1 1 0 8 0 amappl5 112 382 0 369 1 0 1 1 0 8 0 amappl4 104 506 0 484 1 0 1 1 0 8 0 amappl3 96 11224 0 11106 4 0 4 4 0 8 0 amappl2 88 1499 0 1434 2 0 2 2 0 8 0 amappl1 80 17274 0 16691 16 3 13 14 0 8 0 amappl 88 17150 0 16966 6 1 5 5 0 92 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2269 0 2233 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2269 0 2233 1 0 1 1 0 8 0 vmmpekpl 168 20037 0 19984 4 0 4 4 0 8 0 vmmpepl 168 144450 0 142316 120 23 97 100 0 357 1 vmsppl 440 2268 0 2233 6 1 5 5 0 8 0 rwobjpl 56 48124 0 41107 100 0 100 100 0 8 0 pdppl 4096 4545 0 4471 187 111 76 85 0 8 2 pvpl 32 29349 0 0 238 2 236 236 0 265 0 pmappl 248 2268 0 2233 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 564 0 160 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pool_gc_pages(0) at pool_gc_pages+0x2c5 pool_p_remove sys/kern/subr_pool.c:1049 [inline] pool_gc_pages(0) at pool_gc_pages+0x2c5 sys/kern/subr_pool.c:1576 taskq_thread(ffffffff834c9000) at taskq_thread+0x157 sys/kern/kern_task.c:448 end trace frame: 0x0, count: -2 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 _kernel_lock_held() at _kernel_lock_held+0x20 sys/kern/kern_lock.c:76 msleep(ffffffff8362f910,ffffffff834f1d40,4,ffffffff83070145,0) at msleep+0x1ac sys/kern/kern_synch.c:232 reaper(ffff800029fd91c0) at reaper+0x14b sys/kern/kern_exit.c:454 end trace frame: 0x0, count: 8 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 _kernel_lock_held() at _kernel_lock_held+0x20 sys/kern/kern_lock.c:76 msleep(ffffffff8362f910,ffffffff834f1d40,4,ffffffff83070145,0) at msleep+0x1ac sys/kern/kern_synch.c:232 reaper(ffff800029fd91c0) at reaper+0x14b sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -7