panic: pool_do_get: mbufpl free list modified: page 0xfffffd806a2aa000; item addr 0xfffffd806a2aa400; offset 0x0=0x0 != 0xe70bfefc777b936e Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 189410 98941 0 0 0 1 syz-executor.0 *365797 98941 0 0 0x4000000 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82494efc) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff828da920,2,ffff800020ef0438) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828da920,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 ip_fragment(fffffd806f2c6900,ffff80000017b2a8,5b4) at ip_fragment+0x13a sys/netinet/ip_output.c:680 ip_output(fffffd806f2c6900,0,fffffd806f68a888,20,0,fffffd806f68a818) at ip_output+0xfd7 sys/netinet/ip_output.c:499 rip_output(fffffd806f2c6900,fffffd806b167e20,ffff800020ef0718,ffff800020f07000) at rip_output+0x252 sys/netinet/raw_ip.c:289 rip_usrreq(fffffd806b167e20,9,fffffd806f2c6900,0,0,ffff800020e37288) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538 sosend(fffffd806b167e20,0,ffff800020ef0890,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020e37288,9,ffff800020ef0970,0,ffff800020ef0a50) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020e37288,ffff800020ef0a08,ffff800020ef0a50) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff800020ef0ad0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ef0ad0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2f00b4be50, count: 1 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 pool_do_get: mbufpl free list modified: page 0xfffffd806a2aa000; item addr 0xfffffd806a2aa400; offset 0x0=0x0 != 0xe70bfefc777b936e ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82494efc) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff828da920,2,ffff800020ef0438) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828da920,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 ip_fragment(fffffd806f2c6900,ffff80000017b2a8,5b4) at ip_fragment+0x13a sys/netinet/ip_output.c:680 ip_output(fffffd806f2c6900,0,fffffd806f68a888,20,0,fffffd806f68a818) at ip_output+0xfd7 sys/netinet/ip_output.c:499 rip_output(fffffd806f2c6900,fffffd806b167e20,ffff800020ef0718,ffff800020f07000) at rip_output+0x252 sys/netinet/raw_ip.c:289 rip_usrreq(fffffd806b167e20,9,fffffd806f2c6900,0,0,ffff800020e37288) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538 sosend(fffffd806b167e20,0,ffff800020ef0890,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020e37288,9,ffff800020ef0970,0,ffff800020ef0a50) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020e37288,ffff800020ef0a08,ffff800020ef0a50) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff800020ef0ad0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ef0ad0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2f00b4be50, count: -14 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020ef0280 rbx 0xffff800020ef0330 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff821bbd5f kprintf+0x16f r9 0x1 r10 0x2 r11 0xd6d34076d8d8ffb1 r12 0x3000000008 r13 0xffff800020ef0290 r14 0x100 r15 0x1 rip 0xffffffff82246688 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020ef0270 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=365797 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e38878,0xffffffff828bfa58 process=0xffff800020eb5760 user=0xffff800020eeb000, vmspace=0xfffffd806e8fb178 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98941 189410 79332 0 7 0 syz-executor.0 *98941 365797 79332 0 7 0x4000000 syz-executor.0 40303 167889 0 0 3 0x14200 bored sosplice 79332 53605 95805 0 3 0x82 nanosleep syz-executor.0 33248 443197 95805 0 3 0x82 piperd syz-executor.1 95805 90139 46053 0 2 0x2 syz-fuzzer 95805 37593 46053 0 3 0x4000082 nanosleep syz-fuzzer 95805 502960 46053 0 3 0x4000082 thrsleep syz-fuzzer 95805 203381 46053 0 3 0x4000082 kqread syz-fuzzer 95805 497120 46053 0 3 0x4000082 thrsleep syz-fuzzer 95805 118912 46053 0 3 0x4000082 thrsleep syz-fuzzer 95805 313032 46053 0 3 0x4000082 thrsleep syz-fuzzer 95805 330961 46053 0 3 0x4000082 thrsleep syz-fuzzer 95805 428617 46053 0 3 0x4000082 thrsleep syz-fuzzer 95805 295454 46053 0 3 0x4000082 thrsleep syz-fuzzer 46053 264420 42615 0 3 0x10008a pause ksh 42615 81066 2983 0 3 0x92 select sshd 68842 486018 1 0 3 0x100083 ttyin getty 2983 21708 1 0 3 0x80 select sshd 98962 200089 65305 74 3 0x100092 bpf pflogd 65305 360491 1 0 3 0x80 netio pflogd 43210 329993 29879 73 3 0x100090 kqread syslogd 29879 19367 1 0 3 0x100082 netio syslogd 85009 424034 1 77 3 0x100090 poll dhclient 84601 468970 1 0 3 0x80 poll dhclient 38976 456080 0 0 3 0x14200 bored smr 28937 100866 0 0 2 0x14200 zerothread 8964 158686 0 0 3 0x14200 aiodoned aiodoned 21216 250373 0 0 3 0x14200 syncer update 72036 400444 0 0 3 0x14200 cleaner cleaner 34523 454564 0 0 3 0x14200 reaper reaper 20941 376820 0 0 3 0x14200 pgdaemon pagedaemon 77263 295003 0 0 3 0x14200 bored crynlk 78566 88356 0 0 3 0x14200 bored crypto 1211 100052 0 0 3 0x40014200 acpi0 acpi0 38686 377932 0 0 3 0x40014200 idle1 50373 284901 0 0 3 0x14200 bored softnet 22227 9531 0 0 3 0x14200 bored systqmp 82621 479419 0 0 3 0x14200 bored systq 63609 445090 0 0 3 0x40014200 bored softclock 32390 487193 0 0 3 0x40014200 idle0 1 379345 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex mbufpl r = 0 (0xffffffff828da930) #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_gethdr+0x4c sys/kern/uipc_mbuf.c:283 #5 ip_fragment+0x13a sys/netinet/ip_output.c:680 #6 ip_output+0xfd7 sys/netinet/ip_output.c:499 #7 rip_output+0x252 sys/netinet/raw_ip.c:289 #8 rip_usrreq+0x46a sys/netinet/raw_ip.c:538 #9 sosend+0x671 sys/kern/uipc_socket.c:555 #10 sendit+0x52b sys/kern/uipc_syscalls.c:657 #11 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #13 Xsyscall+0x128 Process 98941 (syz-executor.0) thread 0xffff800020e37288 (365797) exclusive rwlock netlock r = 0 (0xffffffff8279b1f8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x559 sys/kern/uipc_socket.c:543 #3 sendit+0x52b sys/kern/uipc_syscalls.c:657 #4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 exclusive mutex mbufpl r = 0 (0xffffffff828da930) #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_gethdr+0x4c sys/kern/uipc_mbuf.c:283 #5 ip_fragment+0x13a sys/netinet/ip_output.c:680 #6 ip_output+0xfd7 sys/netinet/ip_output.c:499 #7 rip_output+0x252 sys/netinet/raw_ip.c:289 #8 rip_usrreq+0x46a sys/netinet/raw_ip.c:538 #9 sosend+0x671 sys/kern/uipc_socket.c:555 #10 sendit+0x52b sys/kern/uipc_syscalls.c:657 #11 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9502 6410K 6799K 78643K 11174 0 pcb 13 8K 8K 78643K 53 0 rtable 115 5K 7K 78643K 350 0 ifaddr 68 14K 14K 78643K 115 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 1503 0 iov 0 0K 12K 78643K 24 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 1411 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 18 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 299 0 proc 61 63K 83K 78643K 445 0 subproc 32 2K 2K 78643K 36 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 6 0 in_multi 43 2K 2K 78643K 84 0 ether_multi 1 0K 0K 78643K 5 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 31 148K 148K 78643K 31 0 exec 0 0K 1K 78643K 213 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 124 55K 57K 78643K 1805 0 UVM aobj 9 2K 2K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 27 0 NDP 10 0K 0K 78643K 23 0 temp 89 3862K 3926K 78643K 2818 0 kqueue 3 4K 8K 78643K 9 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 7 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 26 0 24 1 0 1 1 0 8 0 rtentry 112 62 0 19 2 0 2 2 0 8 0 unpcb 120 129 0 118 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 67 0 67 1 1 0 1 0 8 0 tcpcb 544 60 0 56 1 0 1 1 0 8 0 inpcb 296 230 0 220 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 14 0 10 1 0 1 1 0 8 0 pffrag 232 2 0 1 2 1 1 1 0 482 0 pffrnode 88 2 0 1 2 1 1 1 0 8 0 pffrent 40 4 0 3 2 1 1 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 32 0 28 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 23 0 5 1 0 1 1 0 8 0 pfstkey 112 23 0 5 1 0 1 1 0 8 0 pfstate 328 23 0 5 2 0 2 2 0 8 0 pfrule 1360 31 0 20 3 1 2 2 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 240 0 62 13 0 13 13 0 8 0 art_table 32 241 0 62 2 0 2 2 0 8 0 art_node 16 61 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 5 1 0 1 1 0 8 1 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 11 0 2 1 0 1 1 0 8 0 shmpl 112 10 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1722 0 316 89 0 89 89 0 8 1 ffsino 272 1722 0 316 94 0 94 94 0 8 0 nchpl 144 2421 0 810 60 0 60 60 0 8 0 uvmvnodes 72 1943 0 0 36 0 36 36 0 8 0 vnodes 208 1943 0 0 103 0 103 103 0 8 0 namei 1024 6151 0 6151 1 0 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 2 2 1 1 1 0 8 0 pfiaddrpl 120 11 0 8 1 0 1 1 0 8 0 scxspl 192 6940 0 6940 8 7 1 7 0 8 1 plimitpl 152 25 0 17 1 0 1 1 0 8 0 sigapl 424 515 0 483 4 0 4 4 0 8 0 futexpl 56 3926 0 3926 1 0 1 1 0 8 1 knotepl 112 69 0 50 1 0 1 1 0 8 0 kqueuepl 144 210 0 207 1 0 1 1 0 8 0 pipepl 304 115 0 105 3 1 2 2 0 8 1 fdescpl 496 499 0 483 3 0 3 3 0 8 0 filepl 152 2631 0 2526 5 0 5 5 0 8 0 lockfpl 104 21 0 20 1 0 1 1 0 8 0 lockfspl 48 9 0 8 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 125 0 116 1 0 1 1 0 8 0 zombiepl 144 483 0 483 1 0 1 1 0 8 1 processpl 992 515 0 483 5 0 5 5 0 8 0 procpl 624 1025 0 983 4 0 4 4 0 8 0 sosppl 128 1 0 1 1 0 1 1 0 8 1 sockpl 400 385 0 362 4 1 3 4 0 8 0 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 190 0 0 23 0 23 23 0 8 0 mtagpl 96 18 0 0 1 0 1 1 0 8 0 mbufpl 256 217 0 0 12 0 12 12 0 8 0 mbufpl: pool(0xffffffff828da920:mbufpl): free list modified: page 0xfffffd806a2aa000; item ordinal 0; addr 0xfffffd806a2aa400 (p 0xfffffd8076735000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd806a2aa000; item ordinal 0; addr 0xfffffd806a2aa400 (p 0xfffffd8076735000); offset 0x0=0x0 mbufpl: pool(0xffffffff828da920:mbufpl): page inconsistency: page 0xfffffd806a2aa000; item ordinal 1; addr 0x78159bd720bfa683 bufpl 280 3840 0 132 265 0 265 265 0 8 0 anonpl 16 59026 0 41909 71 1 70 70 0 124 1 amapchunkpl 152 2398 0 2233 9 1 8 9 0 158 0 amappl16 192 2068 0 1160 47 0 47 47 0 8 1 amappl15 184 122 0 121 2 1 1 1 0 8 0 amappl14 176 27 0 22 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 148 0 146 2 1 1 1 0 8 0 amappl11 152 64 0 48 1 0 1 1 0 8 0 amappl10 144 141 0 133 1 0 1 1 0 8 0 amappl9 136 390 0 388 1 0 1 1 0 8 0 amappl8 128 341 0 314 2 0 2 2 0 8 0 amappl7 120 117 0 105 1 0 1 1 0 8 0 amappl6 112 22 0 20 2 1 1 1 0 8 0 amappl5 104 536 0 519 1 0 1 1 0 8 0 amappl4 96 493 0 463 1 0 1 1 0 8 0 amappl3 88 117 0 112 1 0 1 1 0 8 0 amappl2 80 3126 0 3054 2 0 2 2 0 8 0 amappl1 72 22486 0 22037 23 13 10 18 0 8 0 amappl 80 1286 0 1236 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 12 0 4 1 0 1 1 0 8 0 uaddrrnd 24 504 0 485 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 504 0 485 1 0 1 1 0 8 0 vmmpekpl 168 7568 0 7532 2 0 2 2 0 8 0 vmmpepl 168 69079 0 66995 158 19 139 150 0 357 47 vmsppl 368 503 0 485 2 0 2 2 0 8 0 pdppl 4096 1015 0 973 6 0 6 6 0 8 0 pvpl 32 197620 0 177322 170 0 170 170 0 265 6 pmappl 232 503 0 485 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 263 0 4 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82494efc) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff828da920,2,ffff800020ef0438) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828da920,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 ip_fragment(fffffd806f2c6900,ffff80000017b2a8,5b4) at ip_fragment+0x13a sys/netinet/ip_output.c:680 ip_output(fffffd806f2c6900,0,fffffd806f68a888,20,0,fffffd806f68a818) at ip_output+0xfd7 sys/netinet/ip_output.c:499 rip_output(fffffd806f2c6900,fffffd806b167e20,ffff800020ef0718,ffff800020f07000) at rip_output+0x252 sys/netinet/raw_ip.c:289 rip_usrreq(fffffd806b167e20,9,fffffd806f2c6900,0,0,ffff800020e37288) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538 sosend(fffffd806b167e20,0,ffff800020ef0890,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020e37288,9,ffff800020ef0970,0,ffff800020ef0a50) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020e37288,ffff800020ef0a08,ffff800020ef0a50) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff800020ef0ad0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ef0ad0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa2f00b4be50, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d70ff0) 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 copyout() at copyout+0x56 syscall(ffff80002290c940) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002290c940) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff1360, count: 9 ddb{1}> trace x86_ipi_db(ffff800020d70ff0) 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 copyout() at copyout+0x56 syscall(ffff80002290c940) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002290c940) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff1360, count: -6