panic: pool_do_get: mbufpl free list modified: page 0xfffffd806a415000; item addr 0xfffffd806a415200; offset 0x0=0x59591d0000000000 != 0x59591d0758a9a45b Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 37253 81903 0 0 0 0 syz-executor.1 *195792 81903 0 0 0x4000000 1K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82494539) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8292d3b8,2,ffff8000230df938) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8292d3b8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250 switchwrite(86128,ffff8000230dfd20,1) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff8000230dfaf0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd80645cec30,ffff8000230dfd20,1,fffffd807f7bf4e0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80684ef3a8,ffff8000230dfd20,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e039d8,3,ffff8000230dfd20,1,ffff8000230dfe10) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e039d8,ffff8000230dfdc8,ffff8000230dfe10) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff8000230dfe90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230dfe90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xba9b9f61890, count: 2 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 0xfffffd806a415000; item addr 0xfffffd806a415200; offset 0x0=0x59591d0000000000 != 0x59591d0758a9a45b ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82494539) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8292d3b8,2,ffff8000230df938) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8292d3b8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250 switchwrite(86128,ffff8000230dfd20,1) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff8000230dfaf0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd80645cec30,ffff8000230dfd20,1,fffffd807f7bf4e0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80684ef3a8,ffff8000230dfd20,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e039d8,3,ffff8000230dfd20,1,ffff8000230dfe10) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e039d8,ffff8000230dfdc8,ffff8000230dfe10) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff8000230dfe90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230dfe90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xba9b9f61890, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000230df780 rbx 0xffff8000230df830 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff816102df kprintf+0x16f r9 0x1 r10 0x2 r11 0x89e11bf2e5bfbdf0 r12 0x3000000008 r13 0xffff8000230df790 r14 0x100 r15 0x1 rip 0xffffffff81fed948 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000230df770 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.1) pid=195792 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800020e04d58,0xffff800020e04af8 process=0xffff800020e98fb0 user=0xffff8000230da000, vmspace=0xfffffd807effe5c0 estcpu=32, cpticks=4, pctcpu=0.0 user=0, sys=4, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81903 37253 81830 0 7 0 syz-executor.1 *81903 195792 81830 0 7 0x4000000 syz-executor.1 81903 488710 81830 0 2 0x4000080 syz-executor.1 81830 166777 28935 0 3 0x82 nanosleep syz-executor.1 4998 466556 28935 0 3 0x82 nanosleep syz-executor.0 15861 456165 0 0 3 0x14200 bored sosplice 28935 342348 85902 0 3 0x82 thrsleep syz-fuzzer 28935 155367 85902 0 3 0x4000082 nanosleep syz-fuzzer 28935 44687 85902 0 3 0x4000082 thrsleep syz-fuzzer 28935 414382 85902 0 3 0x4000082 thrsleep syz-fuzzer 28935 436642 85902 0 3 0x4000082 thrsleep syz-fuzzer 28935 139343 85902 0 3 0x4000082 thrsleep syz-fuzzer 28935 407150 85902 0 3 0x4000082 thrsleep syz-fuzzer 28935 418748 85902 0 3 0x4000082 thrsleep syz-fuzzer 28935 109645 85902 0 3 0x4000082 thrsleep syz-fuzzer 28935 347870 85902 0 3 0x4000082 kqread syz-fuzzer 85902 504900 30327 0 3 0x10008a pause ksh 30327 40389 73892 0 3 0x92 select sshd 62609 431356 1 0 3 0x100083 ttyin getty 73892 489046 1 0 3 0x80 select sshd 20426 99814 56431 74 3 0x100092 bpf pflogd 56431 306640 1 0 3 0x80 netio pflogd 82915 233429 29794 73 3 0x100090 kqread syslogd 29794 479241 1 0 3 0x100082 netio syslogd 87428 431435 1 77 3 0x100090 poll dhclient 54377 54807 1 0 3 0x80 poll dhclient 43408 319564 0 0 3 0x14200 bored smr 78012 152516 0 0 2 0x14200 zerothread 94647 79756 0 0 3 0x14200 aiodoned aiodoned 31392 286556 0 0 3 0x14200 syncer update 81262 253205 0 0 3 0x14200 cleaner cleaner 90687 47092 0 0 3 0x14200 reaper reaper 49338 426635 0 0 3 0x14200 pgdaemon pagedaemon 62640 220855 0 0 3 0x14200 bored crynlk 33948 160291 0 0 3 0x14200 bored crypto 62799 34062 0 0 3 0x40014200 acpi0 acpi0 66995 264707 0 0 3 0x40014200 idle1 41189 47402 0 0 3 0x14200 bored softnet 6838 49230 0 0 3 0x14200 bored systqmp 70714 335331 0 0 3 0x14200 bored systq 26847 107852 0 0 3 0x40014200 bored softclock 52311 371723 0 0 3 0x40014200 idle0 1 209406 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 (0xffffffff8292d3c8) #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_get+0x4c sys/kern/uipc_mbuf.c:250 #5 switchwrite+0x260 sys/net/switchctl.c:260 #6 spec_write+0xd4 sys/kern/spec_vnops.c:309 #7 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #8 vn_write+0x198 sys/kern/vfs_vnops.c:414 #9 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #10 sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 #11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #12 Xsyscall+0x128 Process 81903 (syz-executor.1) thread 0xffff800020e039d8 (195792) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828c5528) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #3 sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 exclusive mutex mbufpl r = 0 (0xffffffff8292d3c8) #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_get+0x4c sys/kern/uipc_mbuf.c:250 #5 switchwrite+0x260 sys/net/switchctl.c:260 #6 spec_write+0xd4 sys/kern/spec_vnops.c:309 #7 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #8 vn_write+0x198 sys/kern/vfs_vnops.c:414 #9 dofilewritev+0x1b6 sys/kern/sys_generic.c:365 #10 sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 #11 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #12 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9511 6412K 6789K 78643K 11156 0 pcb 13 8K 8K 78643K 61 0 rtable 109 4K 7K 78643K 492 0 ifaddr 69 14K 14K 78643K 156 0 counters 43 33K 34K 78643K 57 0 ioctlops 0 0K 4K 78643K 1536 0 iov 1 12K 16K 78643K 33 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1444 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 15 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 135 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 504 0 sigio 0 0K 0K 78643K 2 0 proc 61 63K 83K 78643K 563 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 26 0 in_multi 62 3K 3K 78643K 142 0 ether_multi 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 265 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 120 55K 55K 78643K 2584 0 UVM aobj 23 4K 4K 78643K 42 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 38 0 NDP 11 0K 0K 78643K 35 0 temp 109 3872K 3936K 78643K 6414 0 kqueue 3 4K 24K 78643K 84 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 10 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 46 0 44 1 0 1 1 0 8 0 rtentry 112 94 0 50 2 0 2 2 0 8 0 unpcb 120 182 0 172 1 0 1 1 0 8 0 syncache 264 12 0 12 4 4 0 1 0 8 0 tcpqe 32 1688 0 1688 1 1 0 1 0 8 0 tcpcb 544 138 0 134 1 0 1 1 0 8 0 inpcb 296 833 0 826 3 1 2 2 0 8 1 nd6 48 30 0 24 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 3 0 1 0 8 0 pffrag 232 5 0 4 2 1 1 1 0 482 0 pffrnode 88 5 0 4 2 1 1 1 0 8 0 pffrent 40 53 0 52 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 42 0 42 2 2 0 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 52 0 17 1 0 1 1 0 8 0 pfstkey 112 52 0 17 2 0 2 2 0 8 0 pfstate 328 52 0 17 4 0 4 4 0 8 0 pfrule 1360 33 0 25 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 380 0 192 17 2 15 15 0 8 3 art_table 32 381 0 192 2 0 2 2 0 8 0 art_node 16 93 0 53 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 8 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 132 0 122 1 0 1 1 0 8 0 shmpl 112 39 0 19 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1995 0 587 90 1 89 89 0 8 0 ffsino 272 1995 0 587 96 1 95 95 0 8 0 nchpl 144 2873 0 1273 60 0 60 60 0 8 0 uvmvnodes 72 2202 0 0 41 0 41 41 0 8 0 vnodes 208 2202 0 0 116 0 116 116 0 8 0 namei 1024 8485 0 8485 3 2 1 1 0 8 1 percpumem 16 39 0 7 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 12 0 12 2 2 0 1 0 8 0 scxspl 192 8308 0 8308 11 10 1 7 0 8 1 plimitpl 152 45 0 37 1 0 1 1 0 8 0 sigapl 424 714 0 682 4 0 4 4 0 8 0 futexpl 56 7162 0 7162 2 1 1 1 0 8 1 knotepl 112 199 0 180 1 0 1 1 0 8 0 kqueuepl 144 192 0 189 1 0 1 1 0 8 0 pipepl 304 134 0 124 2 1 1 2 0 8 0 fdescpl 496 698 0 682 3 0 3 3 0 8 0 filepl 152 4278 0 4177 6 1 5 5 0 8 1 lockfpl 104 95 0 94 1 0 1 1 0 8 0 lockfspl 48 34 0 33 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 766 0 757 1 0 1 1 0 8 0 zombiepl 144 682 0 681 2 1 1 1 0 8 0 processpl 992 714 0 681 7 2 5 5 0 8 0 procpl 624 1718 0 1674 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 1067 0 1048 6 3 3 4 0 8 1 mcl64k 65536 78 0 0 10 0 10 10 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 222 0 0 27 0 27 27 0 8 0 mtagpl 96 31 0 0 1 0 1 1 0 8 0 mbufpl 256 302 0 0 18 0 18 18 0 8 0 mbufpl: pool(0xffffffff8292d3b8:mbufpl): free list modified: page 0xfffffd806a415000; item ordinal 0; addr 0xfffffd806a415200 (p 0xfffffd807f7c4000); offset 0x0=0x59591d0000000000 bufpl 280 4144 0 135 287 0 287 287 0 8 0 anonpl 16 111188 0 93144 93 18 75 87 0 124 2 amapchunkpl 152 4520 0 4366 22 14 8 20 0 158 0 amappl16 192 4474 0 3449 64 12 52 61 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 72 0 68 1 0 1 1 0 8 0 amappl13 168 260 0 255 1 0 1 1 0 8 0 amappl12 160 179 0 177 1 0 1 1 0 8 0 amappl11 152 113 0 97 1 0 1 1 0 8 0 amappl10 144 34 0 27 1 0 1 1 0 8 0 amappl9 136 562 0 560 1 0 1 1 0 8 0 amappl8 128 380 0 355 1 0 1 1 0 8 0 amappl7 120 132 0 118 1 0 1 1 0 8 0 amappl6 112 29 0 23 1 0 1 1 0 8 0 amappl5 104 367 0 352 1 0 1 1 0 8 0 amappl4 96 790 0 759 1 0 1 1 0 8 0 amappl3 88 344 0 338 1 0 1 1 0 8 0 amappl2 80 4499 0 4430 2 0 2 2 0 8 0 amappl1 72 30172 0 29713 24 14 10 18 0 8 0 amappl 80 2011 0 1963 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 41 0 19 1 0 1 1 0 8 0 uaddrrnd 24 700 0 682 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 700 0 682 1 0 1 1 0 8 0 vmmpekpl 168 9236 0 9201 2 0 2 2 0 8 0 vmmpepl 168 99226 0 97020 161 33 128 133 0 357 28 vmsppl 368 699 0 682 2 0 2 2 0 8 0 pdppl 4096 1407 0 1366 7 1 6 6 0 8 0 pvpl 32 315297 0 294047 226 26 200 212 0 265 28 pmappl 232 699 0 682 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 293 0 13 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8275aff0) 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 __mp_lock(ffffffff828c5320) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c5320) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffe83c0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8275aff0) 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 __mp_lock(ffffffff828c5320) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c5320) at __mp_lock+0x127 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffe83c0, count: -6 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(ffffffff82494539) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8292d3b8,2,ffff8000230df938) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8292d3b8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250 switchwrite(86128,ffff8000230dfd20,1) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff8000230dfaf0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd80645cec30,ffff8000230dfd20,1,fffffd807f7bf4e0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80684ef3a8,ffff8000230dfd20,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e039d8,3,ffff8000230dfd20,1,ffff8000230dfe10) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e039d8,ffff8000230dfdc8,ffff8000230dfe10) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff8000230dfe90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230dfe90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xba9b9f61890, count: 2 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82494539) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8292d3b8,2,ffff8000230df938) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff8292d3b8,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_get(2,1) at m_get+0x4c sys/kern/uipc_mbuf.c:250 switchwrite(86128,ffff8000230dfd20,1) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff8000230dfaf0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd80645cec30,ffff8000230dfd20,1,fffffd807f7bf4e0) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80684ef3a8,ffff8000230dfd20,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e039d8,3,ffff8000230dfd20,1,ffff8000230dfe10) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e039d8,ffff8000230dfdc8,ffff8000230dfe10) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff8000230dfe90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230dfe90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xba9b9f61890, count: -13