uvm_fault(0xffffffff835476d8, 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 37007 66073 0 0x14000 0x200 0 reaper *279081 33492 0 0x14000 0x200 1 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(ffffffff834a5b80) 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff835476d8, 0x0, 0, 2) -> e ddb{1}> 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(ffffffff834a5b80) at taskq_thread+0x157 sys/kern/kern_task.c:448 end trace frame: 0x0, count: -2 ddb{1}> show registers rdi 0 rsi 0xf90 rbp 0xffff800029fade00 rbx 0xf90 rdx 0 rcx 0 rax 0 r8 0x2 r9 0x1 r10 0xcfefc3eba20cc10c r11 0xcaaa995e8f071b2d r12 0x1dcd65000 r13 0xfffffd806f030f90 r14 0 r15 0xffffffff83545bf8 file_pool rip 0xffffffff8294bc45 pool_gc_pages+0x2c5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800029faddc0 ss 0x10 pool_gc_pages+0x2c5: movq %rax,0(%rcx) ddb{1}> show proc PROC (systqmp) tid=279081 pid=33492 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=0xffff8000ffffe288,0xffff8000ffffe7a8 process=0xffff800029f8c000 user=0xffff800029fa8000, vmspace=0xffffffff835476d8 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=39, intr=17 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99567 59169 21773 0 2 0x8000000 syz-executor 95004 126213 33344 0 2 0x8000000 syz-executor 95004 69199 33344 0 3 0xc000080 fsleep syz-executor 41411 492003 748 0 2 0x8000000 syz-executor 41411 348415 748 0 2 0xc000000 syz-executor 67201 455680 40332 0 2 0x8000000 syz-executor 67201 35437 40332 0 3 0xc000080 sbwait syz-executor 67201 406383 40332 0 3 0xc000000 sbufrcv syz-executor 28443 324479 60190 0 2 0x8000000 syz-executor 28443 6371 60190 0 3 0xc000080 ttyopn syz-executor 28443 70553 60190 0 3 0xc000080 ttyopn syz-executor 28443 461979 60190 0 3 0xc000080 fsleep syz-executor 17277 296002 48712 0 2 0x8000482 syz-executor 70651 463273 48712 0 3 0x8000082 wait syz-executor 33344 447992 48712 0 2 0x8000482 syz-executor 21773 516484 48712 0 2 0x8000482 syz-executor 40332 37410 48712 0 2 0x8000482 syz-executor 748 329909 48712 0 2 0x8000482 syz-executor 60190 23466 48712 0 2 0x8000002 syz-executor 94400 294093 48712 0 3 0x8000082 wait syz-executor 96047 270330 0 0 3 0x14200 acct acct 31 509510 1 0 3 0x18100083 ttyin getty 1740 244663 0 0 3 0x14200 bored sosplice 48712 216328 63657 0 2 0x8000482 syz-executor 63657 307320 79073 0 3 0x810008a sigsusp ksh 79073 154733 42854 0 3 0x18000098 kqread sshd-session 42854 203985 31064 0 3 0x18000092 kqread sshd-session 31064 65849 1 0 3 0x18000088 kqread sshd 53920 274716 43845 74 3 0x19100092 bpf pflogd 43845 477827 1 0 3 0x18000080 sbwait pflogd 82692 177000 41613 73 2 0x19100010 syslogd 41613 517439 1 0 3 0x18100082 sbwait syslogd 70916 41124 1 0 3 0x18100080 kqread resolvd 60694 20426 37766 77 3 0x18100092 kqread dhcpleased 52333 94803 37766 77 2 0x18100492 dhcpleased 37766 424721 1 0 3 0x18000080 kqread dhcpleased 45747 328715 0 0 2 0x14200 smr 25364 313518 0 0 2 0x14200 zerothread 41195 476005 0 0 3 0x14200 aiodoned aiodoned 33590 393741 0 0 2 0x14600 update 77063 307180 0 0 3 0x14200 cleaner cleaner 66073 37007 0 0 7 0x14200 reaper 39726 469841 0 0 3 0x14200 pgdaemon pagedaemon 93867 371377 0 0 3 0x14200 bored viomb 32751 317877 0 0 3 0x40014200 acpi0 acpi0 94698 157356 0 0 3 0x40014200 idle1 22041 181120 0 0 3 0x14200 bored softnet3 12882 332243 0 0 3 0x14200 bored softnet2 20061 81904 0 0 3 0x14200 bored softnet1 24985 251012 0 0 2 0x14200 softnet0 *33492 279081 0 0 7 0x14200 systqmp 41159 499224 0 0 3 0x14200 bored systq 76867 153298 0 0 3 0x14200 tmoslp softclockmp 79134 283237 0 0 2 0x40014200 softclock 94578 36678 0 0 3 0x40014200 idle0 1 108759 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex filepl r = 0 (0xffffffff83545c08) #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 67201 (syz-executor) thread 0xffff800035d98cd0 (35437) exclusive rwlock sbufrcv r = 0 (0xffff800010fbe8d0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sblock+0xb7 sys/kern/uipc_socket2.c:549 #3 soreceive+0x295 sys/kern/uipc_socket.c:947 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1082 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:973 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 82692 (syslogd) thread 0xffff8000ffffd960 (177000) exclusive rrwlock inode r = 0 (0xfffffd806e4903d0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2927 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 66073 (reaper) thread 0xffff800029fd91c0 (37007) exclusive rwlock vmmaplk r = 0 (0xfffffd807c619628) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252 #3 uvm_map_teardown+0x5e sys/uvm/uvm_map.c:2466 #4 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #5 reaper+0x256 sys/kern/kern_exit.c:480 #6 proc_trampoline+0x10 Process 33492 (systqmp) thread 0xffff8000ffffe510 (279081) shared rwlock pools r = 0 (0xffffffff834c45a0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 pool_gc_pages+0x2e sys/kern/subr_pool.c:1560 #2 taskq_thread+0x157 sys/kern/kern_task.c:448 #3 proc_trampoline+0x10 shared rwlock systqmp r = 0 (0xffffffff834a5bf0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 taskq_thread+0x12a sys/kern/kern_task.c:444 #2 proc_trampoline+0x10 exclusive mutex filepl r = 0 (0xffffffff83545c08) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10318 10232K 10646K 166960K 19389 0 pcb 17 16K 18K 166960K 918 0 rtable 206 17K 18K 166960K 7115 0 pf 45 19K 25K 166960K 645 0 ifaddr 41 10K 11K 166960K 957 0 ifgroup 68 2K 2K 166960K 1034 0 sysctl 4 1K 1K 166960K 12 0 counters 70 37K 37K 166960K 588 0 ioctlops 0 0K 4K 166960K 2134 0 iov 1 4K 18K 166960K 499 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1559 98K 98K 166960K 8708 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 16K 28K 166960K 89 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 497 0 dirhash 18 3K 3K 166960K 114 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 89K 166960K 6587 0 sigio 0 0K 0K 166960K 256 0 proc 71 91K 140K 166960K 6724 0 subproc 104 6K 7K 166960K 2860 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 614 0 in_multi 84 6K 7K 166960K 2496 0 ether_multi 1 0K 0K 166960K 18 0 mrt 1 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 4005 0 pfkey data 0 0K 0K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 253 89K 128K 166960K 51959 0 UVM aobj 42 4K 4K 166960K 48 0 pinsyscall 42 84K 103K 166960K 13158 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 227 0 NDP 15 0K 2K 166960K 714 0 temp 76 6816K 6944K 166960K 183637 0 kqueue 13 20K 29K 166960K 632 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 1068 0 1065 9 8 1 3 0 8 0 rtentry 112 2536 0 2452 4 1 3 4 0 8 0 unpcb 144 5352 0 5330 51 47 4 6 0 8 3 syncache 336 12 0 12 9 9 0 1 0 8 0 tcpqe 32 7 0 7 5 5 0 1 0 8 0 tcpcb 808 1791 0 1787 60 55 5 14 0 8 4 arp 120 461 0 445 1 0 1 1 0 8 0 inpcb 336 6833 0 6824 94 90 4 12 0 8 3 nd6 136 707 0 684 2 1 1 2 0 8 0 pkpcb 40 30 0 30 18 17 1 1 0 8 1 kcovpl 48 220 0 212 1 0 1 1 0 8 0 ppxss 1168 40 0 40 16 15 1 1 0 8 1 pfstscr 40 8 0 8 3 3 0 1 0 8 0 pffrag 232 33 0 27 3 2 1 1 0 482 0 pffrnode 88 31 0 25 3 2 1 1 0 8 0 pffrent 40 133 0 127 3 2 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 11 0 6 1 0 1 1 0 8 0 pfanchor 1288 7 0 3 1 0 1 1 0 8 0 pftag 88 5 0 2 1 0 1 1 0 8 0 pfqueue 264 2 0 2 2 2 0 1 0 8 0 pfstitem 24 518 0 445 1 0 1 1 0 8 0 pfstkey 128 527 0 454 4 1 3 3 0 8 0 pfstate 376 521 0 449 13 5 8 8 0 8 0 pfrule 1344 42 0 29 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 9977 0 9606 52 25 27 30 0 8 0 art_table 32 9978 0 9606 5 1 4 4 0 8 0 art_node 16 2529 0 2455 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 461 0 451 1 0 1 1 0 8 0 shmpl 112 45 0 6 2 0 2 2 0 8 0 dirhash 1024 86 0 64 5 2 3 4 0 8 0 dino2pl 256 8758 0 6825 123 1 122 122 0 8 0 ffsino 272 8758 0 6825 130 0 130 130 0 8 0 nchpl 144 14240 0 13359 71 38 33 71 0 8 0 uvmvnodes 80 9233 0 0 189 0 189 189 0 8 0 vnodes 216 9233 0 0 513 0 513 513 0 8 0 namei 1024 78677 0 78677 11 10 1 2 0 8 1 percpumem 16 308 0 259 1 0 1 1 0 8 0 vcpupl 3904 16 0 4 2 0 2 2 0 8 0 vmpool 696 26 0 14 2 0 2 2 0 8 0 pfiaddrpl 120 3 0 1 1 0 1 1 0 8 0 kstatmem 264 548 0 518 3 0 3 3 0 8 0 scsiplug 72 10 0 10 8 7 1 1 0 8 1 scxspl 216 122651 0 122651 33 30 3 8 1 8 3 plimitpl 152 1380 0 1363 1 0 1 1 0 8 0 sigapl 424 6468 0 6416 13 6 7 7 0 8 0 futexpl 64 62717 0 62715 22 21 1 1 0 8 0 knotepl 120 878 0 0 17 0 17 17 0 8 0 kqueuepl 216 1709 0 1699 25 22 3 8 0 8 2 pipepl 320 1516 0 1489 23 20 3 8 0 8 0 fdescpl 496 6447 0 6416 12 7 5 5 0 8 0 filepl 152 47386 0 47116 130 113 17 19 0 8 3 filepl: pool(0xffffffff83545bf8:filepl): page inconsistency: page 0x0; at page head addr 0xfffffd806f030f90 (p 0xfffffd806f030000) lockfpl 104 2103 0 2101 5 4 1 2 0 8 0 lockfspl 48 679 0 677 1 0 1 1 0 8 0 sessionpl 144 237 0 228 1 0 1 1 0 8 0 pgrppl 48 752 0 735 1 0 1 1 0 8 0 ucredpl 104 7502 0 7487 1 0 1 1 0 8 0 zombiepl 144 6419 0 6416 3 2 1 1 0 8 0 processpl 1152 6468 0 6416 6 2 4 5 0 8 0 procpl 648 12858 0 12799 12 6 6 7 0 8 0 srpgc 96 22 0 22 7 6 1 1 0 8 1 sosppl 168 22 0 22 12 11 1 1 0 8 1 sockpl 664 13448 0 13414 147 135 12 15 0 8 8 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 383 0 0 27 5 22 27 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 1704 0 0 91 0 91 91 0 8 0 bufpl 280 18384 0 9152 662 2 660 660 0 8 0 anonpl 24 867983 0 863965 184 130 54 79 0 185 5 amapchunkpl 152 167465 0 166944 125 93 32 42 0 158 8 amappl16 200 12987 0 12958 158 146 12 19 0 8 8 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 542 0 530 1 0 1 1 0 8 0 amappl13 176 17 0 17 3 3 0 1 0 8 0 amappl12 168 10448 0 10418 4 2 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 9 0 8 1 0 1 1 0 8 0 amappl9 144 144 0 143 2 1 1 1 0 8 0 amappl8 136 30 0 27 1 0 1 1 0 8 0 amappl7 128 535 0 522 1 0 1 1 0 8 0 amappl6 120 2301 0 2299 1 0 1 1 0 8 0 amappl5 112 1067 0 1054 1 0 1 1 0 8 0 amappl4 104 957 0 936 1 0 1 1 0 8 0 amappl3 96 32069 0 31948 4 0 4 4 0 8 0 amappl2 88 3607 0 3540 2 0 2 2 0 8 0 amappl1 80 39962 0 39379 19 5 14 15 0 8 0 amappl 88 49768 0 49590 5 0 5 5 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 7 0 7 2 2 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 47 0 6 1 0 1 1 0 8 0 uaddrrnd 24 6473 0 6430 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6473 0 6430 1 0 1 1 0 8 0 vmmpekpl 168 55321 0 55271 4 1 3 3 0 8 0 vmmpepl 168 394444 0 392534 221 124 97 101 0 357 9 vmsppl 440 6472 0 6430 8 2 6 6 0 8 0 rwobjpl 56 114219 0 103975 163 15 148 148 0 8 1 pdppl 4096 12953 0 12872 452 369 83 89 0 8 2 pvpl 32 44762 0 0 361 1 360 360 0 265 0 pmappl 248 6472 0 6430 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1081 0 584 15 0 15 15 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83489ff0) 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 __mp_release_all(ffffffff8354f950) at __mp_release_all+0xd8 sys/kern/kern_lock.c:194 msleep(ffffffff83548138,ffffffff83436da0,4,ffffffff830669f4,0) at msleep+0x1ed reaper(ffff800029fd91c0) at reaper+0x15b sys/kern/kern_exit.c:451 end trace frame: 0x0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff83489ff0) 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 __mp_release_all(ffffffff8354f950) at __mp_release_all+0xd8 sys/kern/kern_lock.c:194 msleep(ffffffff83548138,ffffffff83436da0,4,ffffffff830669f4,0) at msleep+0x1ed reaper(ffff800029fd91c0) at reaper+0x15b sys/kern/kern_exit.c:451 end trace frame: 0x0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at pool_gc_pages+0x2c5: movq %rax,0(%rcx) 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(ffffffff834a5b80) at taskq_thread+0x157 sys/kern/kern_task.c:448 end trace frame: 0x0, count: 13 ddb{1}> 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(ffffffff834a5b80) at taskq_thread+0x157 sys/kern/kern_task.c:448 end trace frame: 0x0, count: -2