panic: pool_cache_item_magic_cWhAecRNk:I NGm:bu SfpPLl NcOpTu LfOrWeeER ElDi OsNt SmYoSdCiAfLiLe d:13 6 i-t2e7m4 5a4d4d r EX0IxTf ff0 f9f d 80Stopped at savectx+0xb1: movl $0,%gs:0x530 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 14000 96391 0 0x2 0 0 syz-executor.0 328149 15207 0 0x12 0 1 sshd savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffbd000, count: 14 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 0xfffffd8064b97300+16 0x0!=0xb3b047ca913771f4 ddb{0}> trace savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffbd000, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020f6d8b0 rbx 0 rdx 0x8b rcx 0x2 rax 0x39 r8 0xffffffff81c317bf kprintf+0x16f r9 0x1 r10 0x2 r11 0x74543791166c9180 r12 0 r13 0 r14 0xffff800020e6c758 r15 0 rip 0xffffffff8106d3f1 savectx+0xb1 cs 0x8 rflags 0x46 rsp 0xffff800020f6d830 ss 0 savectx+0xb1: movl $0,%gs:0x530 ddb{0}> show proc PROC (syz-executor.0) pid=14000 stat=onproc flags process=2 proc=0 pri=17, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6c9c8,0xffff800020ed6028 process=0xffff800020e80010 user=0xffff800020f68000, vmspace=0xfffffd807efffa10 estcpu=36, cpticks=1, pctcpu=0.9 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97356 60049 67418 0 2 0 syz-executor.1 97356 281789 67418 0 2 0x4000000 syz-executor.1 67418 244864 97008 0 3 0x82 nanosleep syz-executor.1 66115 251513 0 0 3 0x14280 nfsidl nfsio 91112 124162 0 0 3 0x14280 nfsidl nfsio 78614 232818 0 0 3 0x14280 nfsidl nfsio 51039 450481 0 0 3 0x14280 nfsidl nfsio 64585 369574 0 0 3 0x14280 nfsidl nfsio 20781 210698 0 0 3 0x14280 nfsidl nfsio 86353 92562 0 0 3 0x14280 nfsidl nfsio 81959 398030 0 0 3 0x14280 nfsidl nfsio 92328 225944 0 0 3 0x14280 nfsidl nfsio 15182 258921 0 0 3 0x14280 nfsidl nfsio 81127 227329 0 0 3 0x14280 nfsidl nfsio 2331 100408 0 0 3 0x14280 nfsidl nfsio 56946 339189 0 0 3 0x14280 nfsidl nfsio 44084 388993 0 0 3 0x14280 nfsidl nfsio 792 108302 0 0 3 0x14280 nfsidl nfsio 84935 461246 0 0 3 0x14280 nfsidl nfsio 83943 246145 0 0 3 0x14280 nfsidl nfsio 51885 323277 0 0 3 0x14280 nfsidl nfsio 51382 188785 0 0 3 0x14280 nfsidl nfsio 19451 181690 0 0 3 0x14280 nfsidl nfsio 65903 115503 0 0 3 0x14200 bored sosplice *96391 14000 97008 0 7 0x2 syz-executor.0 97008 413940 35517 0 3 0x82 thrsleep syz-fuzzer 97008 16425 35517 0 3 0x4000082 nanosleep syz-fuzzer 97008 282350 35517 0 3 0x4000082 thrsleep syz-fuzzer 97008 275651 35517 0 3 0x4000082 thrsleep syz-fuzzer 97008 272062 35517 0 3 0x4000082 thrsleep syz-fuzzer 97008 510795 35517 0 3 0x4000082 thrsleep syz-fuzzer 97008 444915 35517 0 3 0x4000082 nanosleep syz-fuzzer 97008 289250 35517 0 3 0x4000082 thrsleep syz-fuzzer 97008 143659 35517 0 3 0x4000082 thrsleep syz-fuzzer 97008 126168 35517 0 3 0x4000082 kqread syz-fuzzer 35517 423283 15207 0 3 0x10008a pause ksh 15207 328149 26604 0 7 0x12 sshd 79591 81322 1 0 3 0x100083 ttyin getty 26604 337734 1 0 3 0x80 select sshd 67284 176150 34801 74 3 0x100092 bpf pflogd 34801 492794 1 0 3 0x80 netio pflogd 67379 495280 48014 73 3 0x100090 kqread syslogd 48014 511034 1 0 3 0x100082 netio syslogd 80931 463494 1 77 3 0x100090 poll dhclient 51130 463636 1 0 3 0x80 poll dhclient 5722 204129 0 0 3 0x14200 bored smr 85531 37461 0 0 2 0x14200 zerothread 93346 78289 0 0 3 0x14200 aiodoned aiodoned 21502 442959 0 0 3 0x14200 syncer update 29088 29533 0 0 3 0x14200 cleaner cleaner 87391 218772 0 0 3 0x14200 reaper reaper 23395 508776 0 0 3 0x14200 pgdaemon pagedaemon 17831 232912 0 0 3 0x14200 bored crynlk 39839 449120 0 0 3 0x14200 bored crypto 99837 444020 0 0 3 0x40014200 acpi0 acpi0 2403 143467 0 0 3 0x40014200 idle1 68696 217215 0 0 3 0x14200 bored softnet 45134 287581 0 0 3 0x14200 bored systqmp 85490 265538 0 0 3 0x14200 bored systq 90084 259157 0 0 3 0x40014200 bored softclock 208 267949 0 0 3 0x40014200 idle0 1 268219 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &iopl->mtx r = 0 (0xffff800000038170) #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 scsi_iopool_run+0x30 scsi_pending_start sys/scsi/scsi_base.c:214 [inline] #3 scsi_iopool_run+0x30 sys/scsi/scsi_base.c:417 #4 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596 #5 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535 #6 sdstrategy+0x187 sys/scsi/sd.c:585 #7 spec_strategy+0x74 sys/kern/spec_vnops.c:468 #8 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712 #9 bwrite+0x1b9 sys/kern/vfs_bio.c:756 #10 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 #11 ufs_mkdir+0x665 sys/ufs/ufs/ufs_vnops.c:1232 #12 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #13 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #14 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #14 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #15 Xsyscall+0x128 Process 96391 (syz-executor.0) thread 0xffff800020e6c758 (14000) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82686420) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 #2 mi_switch+0x392 sys/kern/sched_bsd.c:435 #3 sleep_finish+0x113 sys/kern/kern_synch.c:418 #4 sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] #4 sleep_finish_all+0x32 sys/kern/kern_synch.c:393 #5 tsleep+0x1cc sys/kern/kern_synch.c:155 #6 biowait+0xa6 sys/kern/vfs_bio.c:1256 #7 bwrite+0x1e4 sys/kern/vfs_bio.c:765 #8 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 #9 ufs_mkdir+0x42e sys/ufs/ufs/ufs_vnops.c:1197 #10 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #11 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #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 exclusive rrwlock inode r = 0 (0xfffffd80693b6f80) #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 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358 #5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b312b38) #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 domkdirat+0x75 sys/kern/vfs_syscalls.c:3036 #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 exclusive mutex &iopl->mtx r = 0 (0xffff800000038170) #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 scsi_iopool_run+0x30 scsi_pending_start sys/scsi/scsi_base.c:214 [inline] #3 scsi_iopool_run+0x30 sys/scsi/scsi_base.c:417 #4 scsi_xsh_runqueue+0x210 sys/scsi/scsi_base.c:596 #5 scsi_xsh_add+0xc9 sys/scsi/scsi_base.c:535 #6 sdstrategy+0x187 sys/scsi/sd.c:585 #7 spec_strategy+0x74 sys/kern/spec_vnops.c:468 #8 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712 #9 bwrite+0x1b9 sys/kern/vfs_bio.c:756 #10 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 #11 ufs_mkdir+0x665 sys/ufs/ufs/ufs_vnops.c:1232 #12 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #13 domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 #14 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #14 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #15 Xsyscall+0x128 Process 15207 (sshd) thread 0xffff800020ede280 (328149) exclusive rwlock netlock r = 0 (0xffffffff82496048) #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 9551 6561K 7267K 78643K 12242 0 pcb 13 8K 8K 78643K 99 0 rtable 111 12K 12K 78643K 335 0 ifaddr 92 17K 17K 78643K 152 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 59 0 ioctlops 0 0K 4K 78643K 1486 0 iov 0 0K 28K 78643K 333 0 mount 1 1K 1K 78643K 1 0 vnodes 1230 77K 78K 78643K 1682 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 22 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 511 0 sigio 0 0K 0K 78643K 4 0 proc 63 63K 95K 78643K 519 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 37 0 in_multi 71 3K 3K 78643K 130 0 ether_multi 1 0K 0K 78643K 22 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 253 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 122 39K 53K 78643K 2506 0 UVM aobj 12 2K 2K 78643K 12 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 83 0 NDP 15 0K 0K 78643K 29 0 temp 114 3035K 3102K 78643K 11164 0 kqueue 3 4K 12K 78643K 17 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 10 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 47 0 45 1 0 1 1 0 8 0 rtentry 112 62 0 18 2 0 2 2 0 8 0 unpcb 120 485 0 475 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 89 0 89 2 2 0 1 0 8 0 tcpcb 544 168 0 164 1 0 1 1 0 8 0 inpcb 280 491 0 484 2 1 1 2 0 8 0 nd6 48 11 0 5 1 0 1 1 0 8 0 ppxss 1128 5 0 5 2 2 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 92 0 92 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 49 0 15 1 0 1 1 0 8 0 pfstkey 112 51 0 17 2 0 2 2 0 8 0 pfstate 328 49 0 15 4 0 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 265 0 74 14 1 13 13 0 8 1 art_table 32 266 0 74 2 0 2 2 0 8 0 art_node 16 61 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 1 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2080 0 676 89 0 89 89 0 8 0 ffsino 272 2080 0 676 95 0 95 95 0 8 0 nchpl 144 3071 0 1477 60 0 60 60 0 8 0 uvmvnodes 72 2516 0 0 46 0 46 46 0 8 0 vnodes 208 2516 0 0 133 0 133 133 0 8 0 namei 1024 8431 0 8431 2 1 1 1 0 8 1 percpumem 16 40 0 8 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 4 2 1 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 8089 0 8089 8 7 1 7 0 8 1 plimitpl 152 40 0 32 1 0 1 1 0 8 0 sigapl 424 745 0 693 7 1 6 7 0 8 0 futexpl 56 6973 0 6973 1 0 1 1 0 8 1 knotepl 112 90 0 71 1 0 1 1 0 8 0 kqueuepl 144 73 0 71 1 0 1 1 0 8 0 pipelkpl 48 127 0 117 1 0 1 1 0 8 0 pipepl 120 254 0 235 1 0 1 1 0 8 0 fdescpl 496 708 0 692 3 0 3 3 0 8 0 filepl 152 4138 0 4038 5 0 5 5 0 8 1 lockfpl 104 103 0 102 1 0 1 1 0 8 0 lockfspl 48 43 0 42 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 377 0 368 1 0 1 1 0 8 0 zombiepl 144 693 0 693 2 1 1 1 0 8 1 processpl 984 745 0 693 7 0 7 7 0 8 0 procpl 624 1701 0 1639 6 0 6 6 0 8 1 sosppl 128 4 0 4 2 2 0 1 0 8 0 sockpl 400 1023 0 1004 5 2 3 4 0 8 1 mcl64k 65536 257 0 0 33 3 30 33 0 8 1 mcl12k 12288 9 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 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 181 0 0 22 0 22 22 0 8 0 mtagpl 80 152 0 0 4 0 4 4 0 8 0 mbufpl 256 631 0 0 38 0 38 38 0 8 0 bufpl 280 4107 0 135 284 0 284 284 0 8 0 anonpl 16 77795 0 63791 78 15 63 76 0 124 1 amapchunkpl 152 3712 0 3578 14 8 6 13 0 158 0 amappl16 192 3196 0 2366 66 19 47 54 0 8 5 amappl15 184 32 0 29 1 0 1 1 0 8 0 amappl14 176 276 0 272 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 6 0 4 2 1 1 1 0 8 0 amappl11 152 90 0 73 1 0 1 1 0 8 0 amappl10 144 18 0 13 1 0 1 1 0 8 0 amappl9 136 572 0 570 1 0 1 1 0 8 0 amappl8 128 532 0 501 1 0 1 1 0 8 0 amappl7 120 126 0 112 1 0 1 1 0 8 0 amappl6 112 30 0 25 2 1 1 1 0 8 0 amappl5 104 574 0 556 1 0 1 1 0 8 0 amappl4 96 507 0 476 1 0 1 1 0 8 0 amappl3 88 340 0 334 1 0 1 1 0 8 0 amappl2 80 4341 0 4266 2 0 2 2 0 8 0 amappl1 72 24538 0 24096 23 13 10 18 0 8 0 amappl 80 1949 0 1904 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 11 0 0 1 0 1 1 0 8 0 uaddrrnd 24 713 0 696 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 713 0 696 1 0 1 1 0 8 0 vmmpekpl 168 9025 0 8986 2 0 2 2 0 8 0 vmmpepl 168 91360 0 89364 144 32 112 120 0 357 19 vmsppl 368 712 0 696 2 0 2 2 0 8 0 pdppl 4096 1434 0 1393 6 0 6 6 0 8 0 pvpl 32 239583 0 222378 183 23 160 183 0 265 9 pmappl 232 712 0 696 3 1 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 323 0 10 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffbd000, count: -1 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_write_1(3f8,0,30) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,30) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,30) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(30) at cnputc+0x4c sys/dev/cons.c:239 kputchar(30,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x1b7c sys/kern/subr_prf.c:1052 panic(ffffffff821fe91c) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff821fe91c) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff82666280) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82666280) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82666280,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8064b96300,28c,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8064b96300,28c,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a0b100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eb38c88,9,fffffd8064b96d00,0,0,ffff800020ede280) at tcp_usrreq+0xa55 end trace frame: 0xffff800020e91370, 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_write_1(3f8,0,30) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,30) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,30) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(30) at cnputc+0x4c sys/dev/cons.c:239 kputchar(30,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x1b7c sys/kern/subr_prf.c:1052 panic(ffffffff821fe91c) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff821fe91c) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff82666280) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82666280) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82666280,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd8064b96300,28c,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd8064b96300,28c,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a0b100) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eb38c88,9,fffffd8064b96d00,0,0,ffff800020ede280) at tcp_usrreq+0xa55 sosend(fffffd806eb38c88,0,ffff800020e91438,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549 dofilewritev(ffff800020ede280,4,ffff800020e91438,0,ffff800020e91520) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020ede280,ffff800020e914d0,ffff800020e91520) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e915a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e915a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe320, count: -19