panic(ffffffff8248bfd9) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff82907ec8,2,ffff800020da8948) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82907ec8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd8076a8be00,3700,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8076a8be00,3700,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ada100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_input(ffff800020da8f28,ffff800020da8f34,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da8f28,ffff800020da8f34,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da8f28,ffff800020da8f34,ffff800020d88c30,0) at ip_ours+0x412 ip_input_if(ffff800020da8f28,ffff800020da8f34,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806d3f7300) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806d3f7300,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020da9058) at if_input_process+0x10b if_ih_input sys/net/if.c:902 [inline] if_input_process(ffff80000017b2a8,ffff800020da9058) at if_input_process+0x10b sys/net/if.c:936 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 end trace frame: 0xffff800020da9130, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic pool_do_get: mbufpl free list modified: page 0xfffffd8075e57000; item addr 0xfffffd8075e57c00; offset 0x0=0x73d79b0000000000 != 0x73d79b953c5d32fd ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8248bfd9) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff82907ec8,2,ffff800020da8948) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82907ec8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd8076a8be00,3700,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8076a8be00,3700,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ada100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_input(ffff800020da8f28,ffff800020da8f34,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da8f28,ffff800020da8f34,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da8f28,ffff800020da8f34,ffff800020d88c30,0) at ip_ours+0x412 ip_input_if(ffff800020da8f28,ffff800020da8f34,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806d3f7300) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806d3f7300,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020da9058) at if_input_process+0x10b if_ih_input sys/net/if.c:902 [inline] if_input_process(ffff80000017b2a8,ffff800020da9058) at if_input_process+0x10b sys/net/if.c:936 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -15 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020da8790 rbx 0xffff800020da8840 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8239351f kprintf+0x16f r9 0x1 r10 0x2 r11 0x33bff87fbfdfc3c8 r12 0x3000000008 r13 0xffff800020da87a0 r14 0x100 r15 0x1 rip 0xffffffff81ef4318 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da8780 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (softnet) pid=406197 stat=onproc flags process=14000 proc=200 pri=32, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020d88ea0,0xffff800020d884f0 process=0xffff800020d8a7b0 user=0xffff800020da4000, vmspace=0xffffffff828f4b50 estcpu=1, cpticks=3, pctcpu=0.3 user=0, sys=3, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 69047 385562 69002 0 2 0 syz-executor.0 69047 186638 69002 0 3 0x4000080 fsleep syz-executor.0 69047 258146 69002 0 7 0x4000000 syz-executor.0 61993 522691 1 0 3 0x100083 ttyin getty 55999 412175 86203 0 3 0x2 biowait syz-executor.1 69002 166551 86203 0 3 0x82 nanosleep syz-executor.0 56876 290250 0 0 3 0x14200 bored sosplice 86203 387000 49250 0 3 0x82 thrsleep syz-fuzzer 86203 103994 49250 0 3 0x4000082 nanosleep syz-fuzzer 86203 376103 49250 0 3 0x4000082 thrsleep syz-fuzzer 86203 358605 49250 0 3 0x4000082 kqread syz-fuzzer 86203 472973 49250 0 3 0x4000082 nanosleep syz-fuzzer 86203 282450 49250 0 3 0x4000082 thrsleep syz-fuzzer 86203 298747 49250 0 3 0x4000082 thrsleep syz-fuzzer 86203 317480 49250 0 3 0x4000082 thrsleep syz-fuzzer 86203 409066 49250 0 3 0x4000082 thrsleep syz-fuzzer 86203 322269 49250 0 3 0x4000082 thrsleep syz-fuzzer 49250 344467 54569 0 3 0x10008a pause ksh 54569 177680 19349 0 3 0x52 netlock sshd 19349 147558 1 0 3 0x80 select sshd 63967 201739 97438 74 3 0x100092 bpf pflogd 97438 136392 1 0 3 0x80 netio pflogd 43611 267564 3434 73 3 0x100090 kqread syslogd 3434 298592 1 0 3 0x100082 netio syslogd 40304 78420 1 77 3 0x100090 poll dhclient 76314 335074 1 0 3 0x80 poll dhclient 65826 327180 0 0 3 0x14200 bored smr 19940 13310 0 0 2 0x14200 zerothread 80139 489965 0 0 3 0x14200 aiodoned aiodoned 96713 389172 0 0 3 0x14200 syncer update 74163 138570 0 0 3 0x14200 cleaner cleaner 63626 459577 0 0 3 0x14200 reaper reaper 21993 103633 0 0 3 0x14200 pgdaemon pagedaemon 54909 51040 0 0 3 0x14200 bored crynlk 18292 420076 0 0 3 0x14200 bored crypto 64659 250717 0 0 3 0x40014200 acpi0 acpi0 95848 476850 0 0 3 0x40014200 idle1 *74033 406197 0 0 7 0x14200 softnet 92968 444812 0 0 3 0x14200 bored systqmp 21032 278692 0 0 3 0x14200 bored systq 56988 165814 0 0 3 0x40014200 bored softclock 31339 353315 0 0 3 0x40014200 idle0 1 75642 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex mbufpl r = 0 (0xffffffff82907ed8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbf sys/kern/subr_pool.c:578 #4 m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] #4 m_copym+0x174 sys/kern/uipc_mbuf.c:667 #5 tcp_output+0x15ba sys/netinet/tcp_output.c:673 #6 tcp_input+0x2356 #7 ip_deliver+0x353 sys/netinet/ip_input.c:668 #8 ip_ours+0x412 #9 ip_input_if+0x6ce #10 ipv4_input+0x48 sys/netinet/ip_input.c:215 #11 ether_input+0x345 sys/net/if_ethersubr.c:461 #12 if_input_process+0x10b if_ih_input sys/net/if.c:902 [inline] #12 if_input_process+0x10b sys/net/if.c:936 #13 ifiq_process+0x80 sys/net/ifq.c:646 #14 taskq_thread+0xec sys/kern/kern_task.c:437 #15 proc_trampoline+0x1c Process 55999 (syz-executor.1) thread 0xffff800020e22288 (412175) exclusive rrwlock inode r = 0 (0xfffffd806e6e86f8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #11 namei+0x63c sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b21ed58) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 Process 74033 (softnet) thread 0xffff800020d88c30 (406197) exclusive rwlock netlock r = 0 (0xffffffff8273c6c8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_input_process+0x85 sys/net/if.c:935 #2 ifiq_process+0x80 sys/net/ifq.c:646 #3 taskq_thread+0xec sys/kern/kern_task.c:437 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:436 #2 proc_trampoline+0x1c exclusive mutex mbufpl r = 0 (0xffffffff82907ed8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_get+0xbf sys/kern/subr_pool.c:578 #4 m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] #4 m_copym+0x174 sys/kern/uipc_mbuf.c:667 #5 tcp_output+0x15ba sys/netinet/tcp_output.c:673 #6 tcp_input+0x2356 #7 ip_deliver+0x353 sys/netinet/ip_input.c:668 #8 ip_ours+0x412 #9 ip_input_if+0x6ce #10 ipv4_input+0x48 sys/netinet/ip_input.c:215 #11 ether_input+0x345 sys/net/if_ethersubr.c:461 #12 if_input_process+0x10b if_ih_input sys/net/if.c:902 [inline] #12 if_input_process+0x10b sys/net/if.c:936 #13 ifiq_process+0x80 sys/net/ifq.c:646 #14 taskq_thread+0xec sys/kern/kern_task.c:437 #15 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9547 6427K 7205K 78643K 13645 0 pcb 13 8K 8K 78643K 120 0 rtable 116 7K 8K 78643K 642 0 ifaddr 97 18K 18K 78643K 248 0 counters 43 33K 34K 78643K 81 0 ioctlops 0 0K 4K 78643K 1621 0 iov 0 0K 28K 78643K 130 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 2052 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 139 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 885 0 sigio 0 0K 0K 78643K 14 0 proc 65 75K 95K 78643K 609 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 53 0 in_multi 41 2K 2K 78643K 158 0 ether_multi 1 0K 0K 78643K 22 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 328 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 125 87K 87K 78643K 3800 0 UVM aobj 53 4K 4K 78643K 61 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 117 0 NDP 16 0K 0K 78643K 50 0 temp 153 3879K 3943K 78643K 24518 0 kqueue 5 8K 20K 78643K 38 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 14 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 160 0 158 1 0 1 1 0 8 0 rtentry 112 95 0 54 2 0 2 2 0 8 0 unpcb 120 582 0 572 1 0 1 1 0 8 0 syncache 264 17 0 17 4 3 1 1 0 8 1 tcpqe 32 67 0 67 2 2 0 1 0 8 0 tcpcb 544 346 0 341 1 0 1 1 0 8 0 inpcb 296 826 0 817 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 22 0 19 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 2 0 2 2 1 1 1 0 8 1 pffrag 232 3 0 3 2 2 0 1 0 482 0 pffrnode 88 3 0 3 2 2 0 1 0 8 0 pffrent 40 135 0 135 2 2 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 48 0 42 2 1 1 1 0 8 0 pfstitem 24 57 0 27 1 0 1 1 0 8 0 pfstkey 112 57 0 27 2 0 2 2 0 8 0 pfstate 328 57 0 27 4 0 4 4 0 8 0 pfrule 1360 43 0 24 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 449 0 263 14 1 13 13 0 8 1 art_table 32 450 0 263 2 0 2 2 0 8 0 art_node 16 94 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 12 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 137 0 127 1 0 1 1 0 8 0 shmpl 112 59 0 8 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2651 0 1254 89 0 89 89 0 8 0 ffsino 272 2651 0 1254 94 0 94 94 0 8 0 nchpl 144 4207 0 2603 60 0 60 60 0 8 0 uvmvnodes 72 3409 0 0 62 0 62 62 0 8 0 vnodes 208 3409 0 0 180 0 180 180 0 8 0 namei 1024 12627 0 12627 2 1 1 1 0 8 1 percpumem 16 51 0 19 1 0 1 1 0 8 0 vcpupl 1984 9 0 0 2 0 2 2 0 8 0 vmpool 560 13 0 4 2 1 1 1 0 8 0 pfiaddrpl 120 16 0 12 2 1 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 12545 0 12544 13 12 1 7 0 8 0 plimitpl 152 66 0 58 1 0 1 1 0 8 0 sigapl 424 1096 0 1064 4 0 4 4 0 8 0 futexpl 56 12876 0 12875 2 1 1 1 0 8 0 knotepl 112 134 0 115 1 0 1 1 0 8 0 kqueuepl 144 131 0 126 1 0 1 1 0 8 0 pipelkpl 48 184 0 174 1 0 1 1 0 8 0 pipepl 120 368 0 349 1 0 1 1 0 8 0 fdescpl 496 1080 0 1064 3 0 3 3 0 8 0 filepl 152 6664 0 6564 5 0 5 5 0 8 1 lockfpl 104 186 0 185 1 0 1 1 0 8 0 lockfspl 48 68 0 67 1 0 1 1 0 8 0 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 482 0 472 1 0 1 1 0 8 0 zombiepl 144 1064 0 1064 1 0 1 1 0 8 1 processpl 984 1096 0 1064 5 0 5 5 0 8 0 procpl 624 2910 0 2867 4 0 4 4 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 10 0 10 4 3 1 1 0 8 1 sockpl 400 1574 0 1554 8 4 4 5 0 8 1 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 14 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 163 0 0 20 0 20 20 0 8 0 mtagpl 96 58 0 0 2 0 2 2 0 8 0 mbufpl 256 274 0 0 16 0 16 16 0 8 0 mbufpl: pool(0xffffffff82907ec8:mbufpl): free list modified: page 0xfffffd8075e57000; item ordinal 0; addr 0xfffffd8075e57c00 (p 0xfffffd806e59c000); offset 0x0=0x73d79b0000000000 bufpl 280 5959 0 139 416 0 416 416 0 8 0 anonpl 16 117421 0 101024 89 11 78 82 0 124 11 amapchunkpl 152 6002 0 5849 8 1 7 8 0 158 0 amappl16 192 5569 0 4686 73 24 49 57 0 8 4 amappl15 184 279 0 278 2 1 1 1 0 8 0 amappl14 176 271 0 266 1 0 1 1 0 8 0 amappl13 168 43 0 40 1 0 1 1 0 8 0 amappl12 160 417 0 414 1 0 1 1 0 8 0 amappl11 152 69 0 53 1 0 1 1 0 8 0 amappl10 144 18 0 14 1 0 1 1 0 8 0 amappl9 136 395 0 394 1 0 1 1 0 8 0 amappl8 128 390 0 362 1 0 1 1 0 8 0 amappl7 120 135 0 120 1 0 1 1 0 8 0 amappl6 112 32 0 24 1 0 1 1 0 8 0 amappl5 104 1275 0 1257 1 0 1 1 0 8 0 amappl4 96 525 0 499 1 0 1 1 0 8 0 amappl3 88 270 0 265 1 0 1 1 0 8 0 amappl2 80 7935 0 7858 2 0 2 2 0 8 0 amappl1 72 32651 0 32216 23 13 10 18 0 8 0 amappl 80 3203 0 3155 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 60 0 8 1 0 1 1 0 8 0 uaddrrnd 24 1093 0 1068 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1093 0 1068 1 0 1 1 0 8 0 vmmpekpl 168 11305 0 11268 2 0 2 2 0 8 0 vmmpepl 168 138429 0 136395 140 40 100 122 0 357 6 vmsppl 368 1092 0 1068 3 0 3 3 0 8 0 pdppl 4096 2193 0 2145 7 0 7 7 0 8 0 pvpl 32 339888 0 320499 215 23 192 195 0 265 35 pmappl 232 1092 0 1068 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 273 0 9 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82764ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 x86_bus_space_io_write_1(3f8,0,a) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,a) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,a) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(a) at cnputc+0x4c sys/dev/cons.c:239 kputchar(a,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 printf(ffffffff824677e1) at printf+0x74 sys/kern/subr_prf.c:506 panic(ffffffff8248bfd9) at panic+0x129 sys/kern/subr_prf.c:202 pool_do_get(ffffffff82907ec8,2,ffff800021f1e638) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82907ec8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_clget(0,2,800) at m_clget+0x1c9 m_gethdr sys/kern/uipc_mbuf.c:283 [inline] m_clget(0,2,800) at m_clget+0x1c9 sys/kern/uipc_mbuf.c:400 vio_populate_rx_mbufs(ffff80000017b000) at vio_populate_rx_mbufs+0xf9 vio_add_rx_mbuf sys/dev/pv/if_vio.c:908 [inline] vio_populate_rx_mbufs(ffff80000017b000) at vio_populate_rx_mbufs+0xf9 sys/dev/pv/if_vio.c:951 end trace frame: 0xffff800021f1e7d0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff82764ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 x86_bus_space_io_write_1(3f8,0,a) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,a) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,a) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(a) at cnputc+0x4c sys/dev/cons.c:239 kputchar(a,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 printf(ffffffff824677e1) at printf+0x74 sys/kern/subr_prf.c:506 panic(ffffffff8248bfd9) at panic+0x129 sys/kern/subr_prf.c:202 pool_do_get(ffffffff82907ec8,2,ffff800021f1e638) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82907ec8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_clget(0,2,800) at m_clget+0x1c9 m_gethdr sys/kern/uipc_mbuf.c:283 [inline] m_clget(0,2,800) at m_clget+0x1c9 sys/kern/uipc_mbuf.c:400 vio_populate_rx_mbufs(ffff80000017b000) at vio_populate_rx_mbufs+0xf9 vio_add_rx_mbuf sys/dev/pv/if_vio.c:908 [inline] vio_populate_rx_mbufs(ffff80000017b000) at vio_populate_rx_mbufs+0xf9 sys/dev/pv/if_vio.c:951 vio_rx_intr(ffff80000017b050) at vio_rx_intr+0x69 intr_handler(ffff800021f1e830,ffff800000255b80) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:536 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f __sanitizer_cov_trace_const_cmp4(ffffffff828f8a98,ffffffff828f8a98) at __sanitizer_cov_trace_const_cmp4+0x6b sys/dev/kcov.c:165 mtx_enter(ffffffff828f8a98) at mtx_enter+0x4b sys/kern/kern_lock.c:266 uvm_pmr_getpages(1,0,0,1,0,1) at uvm_pmr_getpages+0x34e sys/uvm/uvm_pmemrange.c:941 uvm_pagealloc(fffffd806468bc08,11b644000,0,3) at uvm_pagealloc+0x283 sys/uvm/uvm_page.c:923 pmap_get_ptp(fffffd806468bbd8,236c88db000) at pmap_get_ptp+0xe8 sys/arch/amd64/amd64/pmap.c:1175 pmap_enter(fffffd806468bbd8,236c88db000,68205000,3,23) at pmap_enter+0x2a8 udv_fault(ffff800021f1ef38,236c88db000,ffff800021f1ee30,1,0,0) at udv_fault+0x18b sys/uvm/uvm_device.c:340 uvm_fault(fffffd8067225740,236c88db000,0,2) at uvm_fault+0x817 sys/uvm/uvm_fault.c:718 pageflttrap(ffff800021f1f0d0,1) at pageflttrap+0x1b8 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff800021f1f0d0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x236dfd6a610, count: -28 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8248bfd9) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff82907ec8,2,ffff800020da8948) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82907ec8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd8076a8be00,3700,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8076a8be00,3700,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ada100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_input(ffff800020da8f28,ffff800020da8f34,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da8f28,ffff800020da8f34,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da8f28,ffff800020da8f34,ffff800020d88c30,0) at ip_ours+0x412 ip_input_if(ffff800020da8f28,ffff800020da8f34,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806d3f7300) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806d3f7300,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020da9058) at if_input_process+0x10b if_ih_input sys/net/if.c:902 [inline] if_input_process(ffff80000017b2a8,ffff800020da9058) at if_input_process+0x10b sys/net/if.c:936 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 end trace frame: 0xffff800020da9130, count: 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8248bfd9) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff82907ec8,2,ffff800020da8948) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82907ec8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd8076a8be00,3700,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8076a8be00,3700,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000ada100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_input(ffff800020da8f28,ffff800020da8f34,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da8f28,ffff800020da8f34,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da8f28,ffff800020da8f34,ffff800020d88c30,0) at ip_ours+0x412 ip_input_if(ffff800020da8f28,ffff800020da8f34,4,0,ffff80000017b2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017b2a8,fffffd806d3f7300) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff80000017b2a8,fffffd806d3f7300,0) at ether_input+0x345 sys/net/if_ethersubr.c:461 if_input_process(ffff80000017b2a8,ffff800020da9058) at if_input_process+0x10b if_ih_input sys/net/if.c:902 [inline] if_input_process(ffff80000017b2a8,ffff800020da9058) at if_input_process+0x10b sys/net/if.c:936 ifiq_process(ffff80000017b6a0) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -15