panic: pool_cache_item_magic_chekcek:r nmbeluf:p pl rcotpue ctfrioeen lfaiusltt m otrdiapf,ie cdo: dei=t0e m Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 295 7498 0 0x12 0 1 sshd in_delmulti(fbfffffdffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aa5800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009d5000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff8000009d5000) at if_detach+0x140 sys/net/if.c:1149 tun_clone_destroy(ffff8000009d5000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 spec_close(ffff800020f6af00) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e40e4e8,7,fffffd807f7bf960,ffff800020e6c008) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067e2f868,ffff800020e6c008) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067e2f868,ffff800020e6c008) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067e2f868,ffff800020e6c008) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8067e2f868,ffff800020e6c008) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020e6c008) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020e6c008,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020e6c008,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020e6c008,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 end trace frame: 0xffff800020f6b2a0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd806f2e3500+16 0x0!=0x178230a9f63d95bc ddb{0}> trace in_delmulti(fbfffffdffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aa5800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009d5000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff8000009d5000) at if_detach+0x140 sys/net/if.c:1149 tun_clone_destroy(ffff8000009d5000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 spec_close(ffff800020f6af00) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e40e4e8,7,fffffd807f7bf960,ffff800020e6c008) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067e2f868,ffff800020e6c008) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067e2f868,ffff800020e6c008) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067e2f868,ffff800020e6c008) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8067e2f868,ffff800020e6c008) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020e6c008) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020e6c008,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020e6c008,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020e6c008,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020e6c008) at userret+0x199 sys/kern/kern_sig.c:1867 syscall(ffff800020f6b380) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020f6b380) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8bb0, count: -17 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800020f6acd0 rbx 0 rdx 0xffff800020e6c008 rcx 0 rax 0 r8 0xffffffff8157a113 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0xbe02784f7f89155c r12 0 r13 0 r14 0xfbfffffdffffffff r15 0x1 rip 0xffffffff81b9300d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020f6ac70 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.0) pid=323246 stat=onproc flags process=a proc=2000 pri=17, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6c278,0xffff800020ed7d68 process=0xffff800020e80f70 user=0xffff800020f66000, vmspace=0xfffffd807efffa10 estcpu=36, cpticks=1, pctcpu=0.1 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 23673 332070 0 0 3 0x14200 bored sosplice 66899 472371 1 0 3 0x100083 ttyin getty 17301 403347 0 0 3 0x14200 acct acct 50248 381466 66519 0 2 0x2 syz-executor.1 66519 428085 26999 0 3 0x82 nanosleep syz-fuzzer 66519 455523 26999 0 3 0x4000082 nanosleep syz-fuzzer 66519 38797 26999 0 3 0x4000082 thrsleep syz-fuzzer 66519 60749 26999 0 2 0x4000082 syz-fuzzer 66519 76538 26999 0 3 0x4000082 thrsleep syz-fuzzer 66519 223248 26999 0 3 0x4000082 thrsleep syz-fuzzer 66519 486990 26999 0 3 0x4000082 thrsleep syz-fuzzer 66519 127078 26999 0 3 0x4000082 thrsleep syz-fuzzer 66519 448787 26999 0 3 0x4000082 thrsleep syz-fuzzer 66519 120441 26999 0 3 0x4000082 thrsleep syz-fuzzer 26999 212793 7498 0 3 0x10008a pause ksh 7498 295 58952 0 7 0x12 sshd 58952 359756 1 0 3 0x80 select sshd 45002 384931 49530 74 3 0x100092 bpf pflogd 49530 135999 1 0 3 0x80 netio pflogd 7716 253990 92994 73 3 0x100090 kqread syslogd 92994 104323 1 0 3 0x100082 netio syslogd 86891 495311 1 77 3 0x100090 poll dhclient 71465 152365 1 0 3 0x80 poll dhclient 93118 445825 0 0 3 0x14200 bored smr 35699 457056 0 0 2 0x14200 zerothread 58760 446847 0 0 3 0x14200 aiodoned aiodoned 12685 120711 0 0 3 0x14200 syncer update 58081 220846 0 0 3 0x14200 cleaner cleaner 64815 244451 0 0 3 0x14200 reaper reaper 53996 585 0 0 3 0x14200 pgdaemon pagedaemon 86256 129386 0 0 3 0x14200 bored crynlk 44481 374012 0 0 3 0x14200 bored crypto 23110 204216 0 0 3 0x40014200 acpi0 acpi0 1916 446553 0 0 3 0x40014200 idle1 98698 338971 0 0 2 0x14200 softnet 85019 429258 0 0 2 0x14200 systqmp 22264 35086 0 0 3 0x14200 bored systq 32077 349709 0 0 3 0x40014200 bored softclock 70526 339667 0 0 3 0x40014200 idle0 1 215926 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 50248 (syz-executor.1) thread 0xffff800020ed7d58 (381466) exclusive rrwlock inode r = 0 (0xfffffd80645f0f88) #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 (0xfffffd806b32e098) #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 7498 (sshd) thread 0xffff800020ede760 (295) exclusive rwlock netlock r = 0 (0xffffffff82536e78) #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:537 #3 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #4 sys_write+0x83 sys/kern/sys_generic.c:285 #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9527 6436K 6928K 78643K 10937 0 pcb 13 8K 8K 78643K 93 0 rtable 93 4K 4K 78643K 314 0 ifaddr 85 16K 16K 78643K 139 0 counters 43 33K 34K 78643K 59 0 ioctlops 0 0K 4K 78643K 1473 0 iov 0 0K 16K 78643K 36 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1350 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 35 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 4 9K 25K 78643K 231 0 sigio 0 0K 0K 78643K 2 0 proc 62 63K 95K 78643K 468 0 subproc 23 1K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 22 0 in_multi 59 2K 3K 78643K 110 0 ether_multi 1 0K 0K 78643K 11 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 227 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 110 22K 23K 78643K 1708 0 UVM aobj 16 2K 2K 78643K 18 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 37 0 NDP 14 0K 0K 78643K 28 0 temp 107 3038K 3106K 78643K 15660 0 kqueue 3 4K 8K 78643K 13 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 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 30 0 28 1 0 1 1 0 8 0 rtentry 112 59 0 24 2 0 2 2 0 8 0 unpcb 120 101 0 91 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 tcpqe 32 106 0 106 1 1 0 1 0 8 0 tcpcb 544 118 0 114 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 2 0 2 1 1 0 1 0 8 0 inpcb 280 361 0 354 3 1 2 2 0 8 1 rttmr 72 2 0 2 1 0 1 1 0 8 1 nd6 48 8 0 6 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 45 0 45 1 1 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 pfstitem 24 34 0 16 1 0 1 1 0 8 0 pfstkey 112 34 0 16 1 0 1 1 0 8 0 pfstate 328 34 0 16 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 4 0 1 4 1 3 3 0 8 0 art_heap4 256 272 0 90 13 0 13 13 0 8 0 art_table 32 276 0 91 2 0 2 2 0 8 0 art_node 16 58 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 26 0 16 1 0 1 1 0 8 0 shmpl 112 16 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1750 0 345 89 0 89 89 0 8 0 ffsino 272 1750 0 345 96 1 95 95 0 8 0 nchpl 144 2354 0 748 60 0 60 60 0 8 0 uvmvnodes 72 1862 0 0 34 0 34 34 0 8 0 vnodes 208 1862 0 0 98 0 98 98 0 8 0 namei 1024 6386 0 6386 3 2 1 1 0 8 1 percpumem 16 40 0 8 1 0 1 1 0 8 0 vmpool 560 2 0 2 1 0 1 1 0 8 1 scxspl 192 6141 0 6141 9 8 1 7 0 8 1 plimitpl 152 41 0 33 1 0 1 1 0 8 0 sigapl 424 449 0 417 4 0 4 4 0 8 0 futexpl 56 3457 0 3457 2 1 1 1 0 8 1 knotepl 112 74 0 55 1 0 1 1 0 8 0 kqueuepl 144 25 0 23 1 0 1 1 0 8 0 pipelkpl 48 94 0 84 1 0 1 1 0 8 0 pipepl 120 188 0 170 1 0 1 1 0 8 0 fdescpl 496 432 0 417 3 0 3 3 0 8 0 filepl 152 2679 0 2589 5 0 5 5 0 8 0 lockfpl 104 50 0 49 1 0 1 1 0 8 0 lockfspl 48 15 0 14 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 234 0 225 1 0 1 1 0 8 0 zombiepl 144 418 0 417 3 2 1 1 0 8 0 processpl 984 449 0 417 5 0 5 5 0 8 0 procpl 624 933 0 892 4 0 4 4 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 495 0 476 4 1 3 3 0 8 1 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 182 0 0 22 0 22 22 0 8 0 mtagpl 80 14 0 0 1 0 1 1 0 8 0 mbufpl 256 247 0 0 15 0 15 15 0 8 0 bufpl 280 3835 0 132 265 0 265 265 0 8 0 anonpl 16 56116 0 40751 78 4 74 77 0 124 7 amapchunkpl 152 2073 0 1938 8 0 8 8 0 158 0 amappl16 192 2096 0 1271 52 4 48 52 0 8 5 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 36 0 30 1 0 1 1 0 8 0 amappl13 168 26 0 25 1 0 1 1 0 8 0 amappl12 160 13 0 8 1 0 1 1 0 8 0 amappl11 152 60 0 45 1 0 1 1 0 8 0 amappl10 144 120 0 112 1 0 1 1 0 8 0 amappl9 136 481 0 479 1 0 1 1 0 8 0 amappl8 128 451 0 415 2 0 2 2 0 8 0 amappl7 120 221 0 210 1 0 1 1 0 8 0 amappl6 112 23 0 20 1 0 1 1 0 8 0 amappl5 104 334 0 317 1 0 1 1 0 8 0 amappl4 96 485 0 457 1 0 1 1 0 8 0 amappl3 88 111 0 106 1 0 1 1 0 8 0 amappl2 80 2496 0 2434 2 0 2 2 0 8 0 amappl1 72 19373 0 18946 23 13 10 18 0 8 0 amappl 80 1189 0 1147 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 17 0 2 1 0 1 1 0 8 0 uaddrrnd 24 434 0 419 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 434 0 419 1 0 1 1 0 8 0 vmmpekpl 168 7441 0 7409 2 0 2 2 0 8 0 vmmpepl 168 59272 0 57395 122 29 93 112 0 357 3 vmsppl 368 433 0 419 2 0 2 2 0 8 0 pdppl 4096 876 0 838 6 0 6 6 0 8 0 pvpl 32 183758 0 165307 179 3 176 179 0 265 20 pmappl 232 433 0 419 3 1 2 2 0 8 1 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 271 0 8 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace in_delmulti(fbfffffdffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000aa5800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009d5000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff8000009d5000) at if_detach+0x140 sys/net/if.c:1149 tun_clone_destroy(ffff8000009d5000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 spec_close(ffff800020f6af00) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e40e4e8,7,fffffd807f7bf960,ffff800020e6c008) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067e2f868,ffff800020e6c008) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067e2f868,ffff800020e6c008) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067e2f868,ffff800020e6c008) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8067e2f868,ffff800020e6c008) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020e6c008) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020e6c008,0,19,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020e6c008,19) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020e6c008,19) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020e6c008) at userret+0x199 sys/kern/kern_sig.c:1867 syscall(ffff800020f6b380) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020f6b380) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8bb0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020e00ff0) 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_read_1(3f8,5) at x86_bus_space_io_read_1+0x3c sys/arch/amd64/amd64/bus_space.c:639 comcnputc(800,20) at comcnputc+0xb8 sys/dev/ic/com.c:1250 cnputc(20) at cnputc+0x4c sys/dev/cons.c:239 kputchar(20,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 panic(ffffffff821f8f5b) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff821f8f5b) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff82667c68) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82667c68) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82667c68,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806b246800,135c,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806b246800,135c,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a0b760) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eb37968,9,fffffd806f2e3c00,0,0,ffff800020ede760) at tcp_usrreq+0xa55 end trace frame: 0xffff800020e91a90, count: 0 ddb{1}> trace x86_ipi_db(ffff800020e00ff0) 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_read_1(3f8,5) at x86_bus_space_io_read_1+0x3c sys/arch/amd64/amd64/bus_space.c:639 comcnputc(800,20) at comcnputc+0xb8 sys/dev/ic/com.c:1250 cnputc(20) at cnputc+0x4c sys/dev/cons.c:239 kputchar(20,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 panic(ffffffff821f8f5b) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff821f8f5b) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff82667c68) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82667c68) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82667c68,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806b246800,135c,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806b246800,135c,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a0b760) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eb37968,9,fffffd806f2e3c00,0,0,ffff800020ede760) at tcp_usrreq+0xa55 sosend(fffffd806eb37968,0,ffff800020e91b58,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549 dofilewritev(ffff800020ede760,4,ffff800020e91b58,0,ffff800020e91c40) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020ede760,ffff800020e91bf0,ffff800020e91c40) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e91cc0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e91cc0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc00b0, count: -19