panic: curcpu->ci_proc_pmap didn't point to previous pmap Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *518805 62754 0 0x10000002 0x1 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff837ea16d) at panic+0x1cf sys/kern/subr_prf.c:198 switch_restored() at switch_restored+0x3f sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2ce sys/kern/kern_synch.c:369 rw_do_enter_write(fffffd806ec4f988,1) at rw_do_enter_write+0x13c sys/kern/kern_rwlock.c:298 rrw_enter(fffffd806ec4f988,1) at rrw_enter+0xa3 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd8065bd73a8,2001) at VOP_LOCK+0xbf sys/kern/vfs_vops.c:527 vn_lock(fffffd8065bd73a8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vget(fffffd8065bd73a8,2001) at vget+0x2a2 sys/kern/vfs_subr.c:686 ktrwriteraw(ffff80002a776010,fffffd8065bd73a8,fffffd8007ffd750,ffff80002a7ff6d0,ffff80002a7ff6b0) at ktrwriteraw+0x152 sys/kern/kern_ktrace.c:688 ktrpsig(ffff80002a776010,14,9b82719b900,0,0,ffff80002a7ff7a0) at ktrpsig+0x1af ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrpsig(ffff80002a776010,14,9b82719b900,0,0,ffff80002a7ff7a0) at ktrpsig+0x1af sys/kern/kern_ktrace.c:298 postsig(ffff80002a776010,14,ffff80002a7ff8a8) at postsig+0x3bb sys/kern/kern_sig.c:1759 userret(ffff80002a776010) at userret+0x23e sys/kern/kern_sig.c:2207 syscall(ffff80002a7ff9d0) at syscall+0xa56 mi_syscall_return sys/sys/syscall_mi.h:203 [inline] syscall(ffff80002a7ff9d0) at syscall+0xa56 sys/arch/amd64/amd64/trap.c:804 end trace frame: 0xffff80002a7ffa50, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: curcpu->ci_proc_pmap didn't point to previous pmap ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff837ea16d) at panic+0x1cf sys/kern/subr_prf.c:198 switch_restored() at switch_restored+0x3f sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2ce sys/kern/kern_synch.c:369 rw_do_enter_write(fffffd806ec4f988,1) at rw_do_enter_write+0x13c sys/kern/kern_rwlock.c:298 rrw_enter(fffffd806ec4f988,1) at rrw_enter+0xa3 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd8065bd73a8,2001) at VOP_LOCK+0xbf sys/kern/vfs_vops.c:527 vn_lock(fffffd8065bd73a8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vget(fffffd8065bd73a8,2001) at vget+0x2a2 sys/kern/vfs_subr.c:686 ktrwriteraw(ffff80002a776010,fffffd8065bd73a8,fffffd8007ffd750,ffff80002a7ff6d0,ffff80002a7ff6b0) at ktrwriteraw+0x152 sys/kern/kern_ktrace.c:688 ktrpsig(ffff80002a776010,14,9b82719b900,0,0,ffff80002a7ff7a0) at ktrpsig+0x1af ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrpsig(ffff80002a776010,14,9b82719b900,0,0,ffff80002a7ff7a0) at ktrpsig+0x1af sys/kern/kern_ktrace.c:298 postsig(ffff80002a776010,14,ffff80002a7ff8a8) at postsig+0x3bb sys/kern/kern_sig.c:1759 userret(ffff80002a776010) at userret+0x23e sys/kern/kern_sig.c:2207 syscall(ffff80002a7ff9d0) at syscall+0xa56 mi_syscall_return sys/sys/syscall_mi.h:203 [inline] syscall(ffff80002a7ff9d0) at syscall+0xa56 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ab6385a5f10, count: -15 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a7ff1b8 rbx 0xfffffd807ece5000 rdx 0 rcx 0 rax 0xffff80002a776010 r8 0x101010101010101 r9 0x8080808080808080 r10 0x67dc852101885e9a r11 0xfc99911a8dacab9c r12 0 r13 0xffff80002a7fa000 r14 0 r15 0x1 rip 0xffffffff8163de25 db_enter+0x25 cs 0x8 rflags 0x46 rsp 0xffff80002a7ff1a8 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=518805 pid=62754 tcnt=1 stat=onproc flags process=10000002 proc=1 runpri=32, usrpri=62, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a776a70,0xffff80002a7774e0 process=0xffff80002a7ad210 user=0xffff80002a7fa000, vmspace=0xfffffd807ece6e60 estcpu=12, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 21222 455443 42199 0 2 0 syz-executor 21222 419718 42199 0 3 0x4000000 bqwait syz-executor 21222 285047 42199 0 3 0x4000080 fsleep syz-executor 21222 499786 42199 0 3 0x4000080 fsleep syz-executor 41751 79506 73419 0 3 0x80 nanoslp syz-executor 41751 351134 73419 0 3 0x4000080 kqsel syz-executor 41751 421649 73419 0 3 0x4000080 fsleep syz-executor 41751 523910 73419 0 3 0x4000080 fsleep syz-executor 7263 386939 22338 -1 3 0x90 nanoslp syz-executor 7263 500060 22338 -1 3 0x4000090 ttyout syz-executor 73419 340102 89317 0 3 0x82 nanoslp syz-executor 71586 333883 1 0 3 0x100083 ttyin getty 29901 426400 89317 0 3 0x82 nanoslp syz-executor 42199 222545 89317 0 2 0x2 syz-executor 85007 4733 89317 0 3 0x82 wait syz-executor 47748 238943 89317 0 3 0x82 wait syz-executor 55590 238313 89317 0 3 0x82 wait syz-executor *62754 518805 89317 0 7 0x10000003 syz-executor 22338 473768 89317 0 3 0x82 nanoslp syz-executor 89317 235105 5958 0 3 0x82 kqread syz-executor 5958 303484 28416 0 3 0x10008a sigsusp ksh 28416 242484 85773 0 3 0x98 kqread sshd-session 85773 376453 72694 0 3 0x92 kqread sshd-session 72694 245994 1 0 3 0x88 kqread sshd 2737 45130 11327 73 3 0x1100090 kqread syslogd 11327 477949 1 0 3 0x100082 sbwait syslogd 52177 448665 1 0 3 0x100080 kqread resolvd 99282 374490 52503 77 3 0x100092 kqread dhcpleased 58227 415211 52503 77 3 0x100092 kqread dhcpleased 52503 402836 1 0 3 0x80 kqread dhcpleased 44783 127958 0 0 3 0x14200 bored smr 55368 105886 0 0 2 0x14200 zerothread 62434 480936 0 0 3 0x14200 aiodoned aiodoned 13508 178606 0 0 3 0x14200 syncer update 59412 421798 0 0 3 0x14200 cleaner cleaner 4034 268949 0 0 3 0x14200 reaper reaper 10192 227784 0 0 3 0x14200 pgdaemon pagedaemon 59946 336801 0 0 3 0x14200 bored viomb 11412 102400 0 0 3 0x40014200 acpi0 acpi0 80461 412686 0 0 3 0x14200 bored softnet0 88408 443121 0 0 3 0x14200 bored systqmp 74758 74433 0 0 3 0x14200 bored systq 64228 502262 0 0 3 0x40014200 tmoslp softclock 43468 9909 0 0 3 0x40014200 idle0 1 399638 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11069 12171K 12562K 166960K 12969 0 pcb 17 18K 19K 166960K 217 0 rtable 224 8K 8K 166960K 496 0 pf 34 13K 17K 166960K 90 0 ifaddr 40 6K 7K 166960K 66 0 ifgroup 54 2K 2K 166960K 85 0 sysctl 4 1K 9K 166960K 10 0 counters 34 17K 18K 166960K 55 0 ioctlops 0 0K 4K 166960K 378 0 iov 0 0K 24K 166960K 150 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1300 82K 82K 166960K 1797 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 94 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 574 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 100K 166960K 572 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 43 0 in_multi 88 6K 7K 166960K 128 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 21 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 523 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 229 159K 187K 166960K 6800 0 UVM aobj 14 10K 10K 166960K 15 0 pinsyscall 38 76K 90K 166960K 1685 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 32 0 NDP 12 0K 1K 166960K 43 0 temp 50 9069K 9133K 166960K 13161 0 kqueue 13 20K 28K 166960K 114 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 101 0 98 2 0 2 2 0 8 1 rtentry 136 137 0 44 4 0 4 4 0 8 0 unpcb 144 601 0 586 6 0 6 6 0 8 5 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 416 0 412 13 4 9 13 0 8 8 arp 96 21 0 5 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 5 0 2 1 0 1 1 0 8 0 inpcb 328 1060 0 1051 12 3 9 12 0 8 8 nd6 112 33 0 9 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 19 0 19 1 0 1 1 0 8 1 pppxif 1416 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pfrktable 1344 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 3 0 3 1 0 1 1 0 8 1 pftag 88 2 0 2 1 0 1 1 0 8 1 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 384 2 0 1 1 0 1 1 0 8 0 pfrule 1360 10 0 9 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 614 0 195 31 0 31 31 0 8 4 art_table 40 615 0 195 5 0 5 5 0 8 0 art_node 32 137 0 54 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 91 0 81 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2453 0 1000 92 0 92 92 0 8 0 ffsino 256 2453 0 1000 92 0 92 92 0 8 0 nchpl 144 3276 0 1583 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 0 1 1 0 8 1 vnodes 216 2751 0 0 153 0 153 153 0 8 0 namei 1024 11526 0 11526 2 0 2 2 0 8 2 vcpupl 3904 5 0 1 1 0 1 1 0 8 0 vmpool 808 5 0 1 1 0 1 1 0 8 0 kstatmem 264 50 0 26 2 0 2 2 0 8 0 scsiplug 72 4 0 4 1 0 1 1 0 8 1 scxspl 216 17354 0 17226 8 0 8 8 1 8 0 plimitpl 152 245 0 228 1 0 1 1 0 8 0 sigapl 424 863 0 820 6 0 6 6 0 8 1 knotepl 120 29608 0 29561 12 2 10 12 0 8 7 kqueuepl 184 233 0 222 1 0 1 1 0 8 0 pipepl 304 153 0 126 3 0 3 3 0 8 0 fdescpl 448 850 0 821 4 0 4 4 0 8 0 filepl 120 6222 0 6002 14 0 14 14 0 8 5 lockfpl 104 269 0 267 1 0 1 1 0 8 0 lockfspl 48 103 0 101 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 46 0 30 1 0 1 1 0 8 0 ucredpl 104 837 0 825 1 0 1 1 0 8 0 zombiepl 144 825 0 820 1 0 1 1 0 8 0 processpl 1152 863 0 820 4 0 4 4 0 8 0 procpl 664 1576 0 1526 6 0 6 6 0 8 1 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 552 1778 0 1751 18 8 10 16 0 8 8 mcl64k 65536 86 0 86 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 8 0 8 1 0 1 1 0 8 1 mcl4k 4096 3028 0 2973 16 1 15 16 0 8 7 mcl2k 2048 648 0 648 2 0 2 2 0 8 2 mtagpl 96 124 0 11 3 0 3 3 0 8 0 mbufpl 256 9893 0 9612 19 0 19 19 0 8 0 bufpl 280 6774 0 560 444 0 444 444 0 8 0 anonpl 24 153428 0 150255 65 0 65 65 0 187 31 amapchunkpl 152 22352 0 21865 36 0 36 36 0 158 11 amappl16 200 3366 0 3335 31 16 15 22 0 8 6 amappl15 192 54 0 53 1 0 1 1 0 8 0 amappl14 184 420 0 419 1 0 1 1 0 8 0 amappl13 176 114 0 104 1 0 1 1 0 8 0 amappl12 168 1176 0 1148 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 0 1 1 0 8 1 amappl10 152 57 0 47 1 0 1 1 0 8 0 amappl9 144 265 0 265 1 0 1 1 0 8 1 amappl8 136 107 0 106 1 0 1 1 0 8 0 amappl7 128 144 0 131 1 0 1 1 0 8 0 amappl6 120 159 0 158 1 0 1 1 0 8 0 amappl5 112 84 0 76 1 0 1 1 0 8 0 amappl4 104 289 0 272 1 0 1 1 0 8 0 amappl3 96 4255 0 4146 4 0 4 4 0 8 0 amappl2 88 513 0 460 2 0 2 2 0 8 0 amappl1 80 10852 0 10302 13 0 13 13 0 8 1 amappl 88 6024 0 5858 5 0 5 5 0 92 0 uvmvnodes 80 113 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 254 0 254 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 14 0 1 1 0 1 1 0 8 0 uaddrrnd 24 850 0 821 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 850 0 821 1 0 1 1 0 8 0 vmmpekpl 168 8216 0 8175 3 0 3 3 0 8 0 vmmpepl 168 61076 0 59281 98 0 98 98 0 357 12 vmsppl 368 849 0 821 4 0 4 4 0 8 1 rwobjpl 40 19305 0 18323 14 0 14 14 0 8 0 pdppl 4096 1716 0 1648 96 25 71 76 0 8 3 pvpl 32 397883 0 388440 141 0 141 141 0 265 43 pmappl 216 854 0 822 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 386 0 30 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff837ea16d) at panic+0x1cf sys/kern/subr_prf.c:198 switch_restored() at switch_restored+0x3f sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2ce sys/kern/kern_synch.c:369 rw_do_enter_write(fffffd806ec4f988,1) at rw_do_enter_write+0x13c sys/kern/kern_rwlock.c:298 rrw_enter(fffffd806ec4f988,1) at rrw_enter+0xa3 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd8065bd73a8,2001) at VOP_LOCK+0xbf sys/kern/vfs_vops.c:527 vn_lock(fffffd8065bd73a8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vget(fffffd8065bd73a8,2001) at vget+0x2a2 sys/kern/vfs_subr.c:686 ktrwriteraw(ffff80002a776010,fffffd8065bd73a8,fffffd8007ffd750,ffff80002a7ff6d0,ffff80002a7ff6b0) at ktrwriteraw+0x152 sys/kern/kern_ktrace.c:688 ktrpsig(ffff80002a776010,14,9b82719b900,0,0,ffff80002a7ff7a0) at ktrpsig+0x1af ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrpsig(ffff80002a776010,14,9b82719b900,0,0,ffff80002a7ff7a0) at ktrpsig+0x1af sys/kern/kern_ktrace.c:298 postsig(ffff80002a776010,14,ffff80002a7ff8a8) at postsig+0x3bb sys/kern/kern_sig.c:1759 userret(ffff80002a776010) at userret+0x23e sys/kern/kern_sig.c:2207 syscall(ffff80002a7ff9d0) at syscall+0xa56 mi_syscall_return sys/sys/syscall_mi.h:203 [inline] syscall(ffff80002a7ff9d0) at syscall+0xa56 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ab6385a5f10, count: -15 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff837ea16d) at panic+0x1cf sys/kern/subr_prf.c:198 switch_restored() at switch_restored+0x3f sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2ce sys/kern/kern_synch.c:369 rw_do_enter_write(fffffd806ec4f988,1) at rw_do_enter_write+0x13c sys/kern/kern_rwlock.c:298 rrw_enter(fffffd806ec4f988,1) at rrw_enter+0xa3 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd8065bd73a8,2001) at VOP_LOCK+0xbf sys/kern/vfs_vops.c:527 vn_lock(fffffd8065bd73a8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vget(fffffd8065bd73a8,2001) at vget+0x2a2 sys/kern/vfs_subr.c:686 ktrwriteraw(ffff80002a776010,fffffd8065bd73a8,fffffd8007ffd750,ffff80002a7ff6d0,ffff80002a7ff6b0) at ktrwriteraw+0x152 sys/kern/kern_ktrace.c:688 ktrpsig(ffff80002a776010,14,9b82719b900,0,0,ffff80002a7ff7a0) at ktrpsig+0x1af ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrpsig(ffff80002a776010,14,9b82719b900,0,0,ffff80002a7ff7a0) at ktrpsig+0x1af sys/kern/kern_ktrace.c:298 postsig(ffff80002a776010,14,ffff80002a7ff8a8) at postsig+0x3bb sys/kern/kern_sig.c:1759 userret(ffff80002a776010) at userret+0x23e sys/kern/kern_sig.c:2207 syscall(ffff80002a7ff9d0) at syscall+0xa56 mi_syscall_return sys/sys/syscall_mi.h:203 [inline] syscall(ffff80002a7ff9d0) at syscall+0xa56 sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ab6385a5f10, count: -15