panic: pWoAoRNlI_cNGac: hSeP_iL teNOmT_ maLOgWiEcR_EcDh eOcNk :SY SmCbuALfpLl 13c7p u -f17r4e6e8 8l isEXt ImT od0 if9 i edStopped at savectx+0xb1: movl $0,%gs:0x530 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 41880 10341 0 0x2 0 0 syz-executor.1 437741 67396 0 0x12 0 1 sshd savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffd5590, 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 0xfffffd806f335d00+24 0x308c24ff0e6093cf!=0x308c247f65ef6fcf ddb{0}> trace savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffd5590, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002319b2c0 rbx 0 rdx 0x8b rcx 0x2 rax 0x39 r8 0xffffffff81b6be4f kprintf+0x16f r9 0x1 r10 0x2 r11 0xba22c4dd06e05f9 r12 0 r13 0 r14 0xffff800020ed9608 r15 0 rip 0xffffffff81fe03f1 savectx+0xb1 cs 0x8 rflags 0x46 rsp 0xffff80002319b240 ss 0x10 savectx+0xb1: movl $0,%gs:0x530 ddb{0}> show proc PROC (syz-executor.1) pid=41880 stat=onproc flags process=2 proc=0 pri=17, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6dd48,0xffff800020ed93a8 process=0xffff800020e80f70 user=0xffff800023196000, vmspace=0xfffffd807f0008a0 estcpu=36, cpticks=3, pctcpu=0.17 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 44564 434762 0 0 3 0x14200 bored sosplice *10341 41880 82602 0 7 0x2 syz-executor.1 11966 313045 82602 0 2 0x2 syz-executor.0 82602 492944 40266 0 3 0x82 thrsleep syz-fuzzer 82602 208662 40266 0 3 0x4000082 nanosleep syz-fuzzer 82602 54542 40266 0 3 0x4000082 thrsleep syz-fuzzer 82602 388723 40266 0 3 0x4000082 kqread syz-fuzzer 82602 297218 40266 0 3 0x4000082 thrsleep syz-fuzzer 82602 494575 40266 0 3 0x4000082 thrsleep syz-fuzzer 82602 484387 40266 0 3 0x4000082 thrsleep syz-fuzzer 82602 522278 40266 0 3 0x4000082 thrsleep syz-fuzzer 82602 215059 40266 0 3 0x4000082 thrsleep syz-fuzzer 82602 253119 40266 0 3 0x4000082 nanosleep syz-fuzzer 40266 411967 67396 0 3 0x10008a pause ksh 67396 437741 90153 0 7 0x12 sshd 6070 393548 1 0 3 0x100083 ttyin getty 90153 167426 1 0 3 0x80 select sshd 4984 370207 85684 74 3 0x100092 bpf pflogd 85684 218965 1 0 3 0x80 netio pflogd 89222 453710 78054 73 3 0x100090 kqread syslogd 78054 147620 1 0 3 0x100082 netio syslogd 88106 74406 1 77 3 0x100090 poll dhclient 25105 143891 1 0 3 0x80 poll dhclient 97611 247389 0 0 3 0x14200 bored smr 36766 252501 0 0 3 0x14200 pgzero zerothread 11393 516093 0 0 3 0x14200 aiodoned aiodoned 55206 386387 0 0 3 0x14200 syncer update 67634 403772 0 0 3 0x14200 cleaner cleaner 5719 41797 0 0 3 0x14200 reaper reaper 28081 4042 0 0 3 0x14200 pgdaemon pagedaemon 16086 296453 0 0 3 0x14200 bored crynlk 64609 250503 0 0 3 0x14200 bored crypto 81741 520660 0 0 3 0x40014200 acpi0 acpi0 70759 152172 0 0 3 0x40014200 idle1 54880 111543 0 0 2 0x14200 softnet 59455 92862 0 0 3 0x14200 bored systqmp 93669 369869 0 0 3 0x14200 bored systq 17474 442592 0 0 3 0x40014200 bored softclock 46775 131592 0 0 3 0x40014200 idle0 1 58738 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &bq->bufq_mtx r = 0 (0xffff80000017ad68) #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 bufq_queue+0x28 sys/kern/kern_bufq.c:182 #4 sdstrategy+0x178 sys/scsi/sd.c:585 #5 spec_strategy+0x74 sys/kern/spec_vnops.c:468 #6 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712 #7 bwrite+0x1b9 sys/kern/vfs_bio.c:756 #8 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 #9 ffs_truncate+0xc76 #10 ufs_rmdir+0x3af sys/ufs/ufs/ufs_vnops.c:1355 #11 VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474 #12 dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886 #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 Process 10341 (syz-executor.1) thread 0xffff800020ed9608 (41880) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82643b30) #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 getblk+0x14c sys/kern/vfs_bio.c:1019 #7 bread+0x3a bio_doread sys/kern/vfs_bio.c:435 [inline] #7 bread+0x3a sys/kern/vfs_bio.c:480 #8 ffs_update+0x14a sys/ufs/ffs/ffs_inode.c:91 #9 ffs_truncate+0xc76 #10 ufs_rmdir+0x3af sys/ufs/ufs/ufs_vnops.c:1355 #11 VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474 #12 dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886 #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 (0xfffffd8068be4c50) #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 (0xfffffd8068be40a0) #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 exclusive mutex &bq->bufq_mtx r = 0 (0xffff80000017ad68) #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 bufq_queue+0x28 sys/kern/kern_bufq.c:182 #4 sdstrategy+0x178 sys/scsi/sd.c:585 #5 spec_strategy+0x74 sys/kern/spec_vnops.c:468 #6 VOP_STRATEGY+0x99 sys/kern/vfs_vops.c:712 #7 bwrite+0x1b9 sys/kern/vfs_bio.c:756 #8 ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 #9 ffs_truncate+0xc76 #10 ufs_rmdir+0x3af sys/ufs/ufs/ufs_vnops.c:1355 #11 VOP_RMDIR+0xf8 sys/kern/vfs_vops.c:474 #12 dounlinkat+0x14c sys/kern/vfs_syscalls.c:1886 #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 Process 67396 (sshd) thread 0xffff800020ed1ae0 (437741) exclusive rwlock netlock r = 0 (0xffffffff824a2628) #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 9482 6401K 6798K 78643K 10797 0 pcb 13 8K 8K 78643K 33 0 rtable 102 3K 4K 78643K 248 0 ifaddr 50 11K 12K 78643K 81 0 counters 43 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1479 0 iov 0 0K 16K 78643K 12 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1294 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 22 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 131 0 sigio 0 0K 0K 78643K 2 0 proc 60 63K 95K 78643K 439 0 subproc 32 2K 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 14 0 in_multi 39 2K 2K 78643K 50 0 ether_multi 1 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 218 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 113 22K 22K 78643K 1349 0 UVM aobj 8 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 9 0 NDP 7 0K 0K 78643K 17 0 temp 71 3032K 3096K 78643K 2969 0 kqueue 3 4K 8K 78643K 7 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 6 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 27 0 25 1 0 1 1 0 8 0 rtentry 112 47 0 6 2 0 2 2 0 8 0 unpcb 120 81 0 71 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 536 0 536 1 1 0 1 0 8 0 tcpcb 544 40 0 36 1 0 1 1 0 8 0 inpcb 280 125 0 118 2 0 2 2 0 8 1 nd6 48 6 0 0 1 0 1 1 0 8 0 ppxss 1128 2 0 2 1 0 1 1 0 8 1 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 17 0 1 1 0 1 1 0 8 0 pfstkey 112 17 0 1 1 0 1 1 0 8 0 pfstate 328 17 0 1 2 0 2 2 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 256 200 0 10 13 0 13 13 0 8 0 art_table 32 201 0 10 2 0 2 2 0 8 0 art_node 16 46 0 9 1 0 1 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1576 0 171 89 0 89 89 0 8 0 ffsino 272 1576 0 171 95 1 94 94 0 8 0 nchpl 144 2008 0 414 60 0 60 60 0 8 0 uvmvnodes 72 1664 0 0 31 0 31 31 0 8 0 vnodes 208 1664 0 0 88 0 88 88 0 8 0 namei 1024 5294 0 5294 1 0 1 1 0 8 1 percpumem 16 38 0 6 1 0 1 1 0 8 0 vmpool 560 2 0 2 1 1 0 1 0 8 0 scxspl 192 5060 0 5060 8 3 5 7 0 8 5 plimitpl 152 23 0 15 1 0 1 1 0 8 0 sigapl 424 347 0 316 4 0 4 4 0 8 0 futexpl 56 1482 0 1482 1 0 1 1 0 8 1 knotepl 112 65 0 46 1 0 1 1 0 8 0 kqueuepl 144 16 0 14 1 0 1 1 0 8 0 pipelkpl 48 81 0 71 1 0 1 1 0 8 0 pipepl 120 162 0 143 1 0 1 1 0 8 0 fdescpl 496 331 0 316 3 0 3 3 0 8 0 filepl 152 1878 0 1778 5 0 5 5 0 8 1 lockfpl 104 32 0 31 1 0 1 1 0 8 0 lockfspl 48 12 0 11 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 175 0 166 1 0 1 1 0 8 0 zombiepl 144 316 0 316 1 0 1 1 0 8 1 processpl 984 347 0 316 5 0 5 5 0 8 0 procpl 624 582 0 542 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 233 0 214 4 0 4 4 0 8 2 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 209 0 0 26 0 26 26 0 8 0 mtagpl 80 23 0 0 1 0 1 1 0 8 0 mbufpl 256 252 0 0 15 0 15 15 0 8 0 bufpl 280 3422 0 133 235 0 235 235 0 8 0 anonpl 16 44362 0 29405 62 1 61 61 0 124 0 amapchunkpl 152 1606 0 1458 8 1 7 8 0 158 0 amappl16 192 1296 0 506 40 0 40 40 0 8 0 amappl15 184 9 0 8 2 1 1 1 0 8 0 amappl14 176 72 0 67 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 52 0 49 2 1 1 1 0 8 0 amappl11 152 59 0 43 1 0 1 1 0 8 0 amappl10 144 20 0 14 1 0 1 1 0 8 0 amappl9 136 437 0 434 1 0 1 1 0 8 0 amappl8 128 413 0 380 2 0 2 2 0 8 0 amappl7 120 117 0 105 1 0 1 1 0 8 0 amappl6 112 32 0 25 2 1 1 1 0 8 0 amappl5 104 185 0 169 1 0 1 1 0 8 0 amappl4 96 532 0 506 1 0 1 1 0 8 0 amappl3 88 151 0 145 1 0 1 1 0 8 0 amappl2 80 1701 0 1639 2 0 2 2 0 8 0 amappl1 72 17165 0 16737 23 13 10 18 0 8 0 amappl 80 836 0 792 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 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 333 0 318 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 333 0 318 1 0 1 1 0 8 0 vmmpekpl 168 6541 0 6510 2 0 2 2 0 8 0 vmmpepl 168 47116 0 45277 117 11 106 109 0 357 19 vmsppl 368 332 0 318 2 0 2 2 0 8 0 pdppl 4096 674 0 636 6 0 6 6 0 8 0 pvpl 32 155534 0 137533 149 0 149 149 0 265 2 pmappl 232 332 0 318 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 267 0 4 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffd5590, 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(3f8,0,64) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,64) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,64) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(64) at cnputc+0x4c sys/dev/cons.c:239 kputchar(64,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 panic(ffffffff821fcb20) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff821fcb20) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff82682fc0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82682fc0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82682fc0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806f335e00,774,cc,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806f335e00,774,cc,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a0b320) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eb54af8,9,fffffd806f335500,0,0,ffff800020ed1ae0) at tcp_usrreq+0xa55 end trace frame: 0xffff800020ed70b0, 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(3f8,0,64) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,64) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,64) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(64) at cnputc+0x4c sys/dev/cons.c:239 kputchar(64,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 panic(ffffffff821fcb20) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff821fcb20) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff82682fc0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82682fc0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82682fc0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806f335e00,774,cc,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806f335e00,774,cc,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a0b320) at tcp_output+0x15ba sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd806eb54af8,9,fffffd806f335500,0,0,ffff800020ed1ae0) at tcp_usrreq+0xa55 sosend(fffffd806eb54af8,0,ffff800020ed7178,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549 dofilewritev(ffff800020ed1ae0,4,ffff800020ed7178,0,ffff800020ed7260) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020ed1ae0,ffff800020ed7210,ffff800020ed7260) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020ed72e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ed72e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7a00, count: -19