panic: pool_do_get: mbufpl free list modified: page 0xfffffd807e94d000; item addr 0xfffffd807e94d900; offset 0x0=0x0 != 0xa05d4e32da22911f Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 339286 46553 0 0 0 0 syz-executor.0 *138673 46553 0 0 0x4000000 1K syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8249cdc0) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff828ecef0,2,ffff800021fa9048) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828ecef0,2) 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(86139,ffff800021fa9430,11) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff800021fa9200) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd80646d4de8,ffff800021fa9430,11,fffffd807f7bfb40) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80683946a0,ffff800021fa9430,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e38af0,6,ffff800021fa9430,1,ffff800021fa9520) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e38af0,ffff800021fa94d8,ffff800021fa9520) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff800021fa95a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021fa95a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc946cf026b0, 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 0xfffffd807e94d000; item addr 0xfffffd807e94d900; offset 0x0=0x0 != 0xa05d4e32da22911f ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8249cdc0) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff828ecef0,2,ffff800021fa9048) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828ecef0,2) 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(86139,ffff800021fa9430,11) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff800021fa9200) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd80646d4de8,ffff800021fa9430,11,fffffd807f7bfb40) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80683946a0,ffff800021fa9430,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e38af0,6,ffff800021fa9430,1,ffff800021fa9520) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e38af0,ffff800021fa94d8,ffff800021fa9520) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff800021fa95a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021fa95a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc946cf026b0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800021fa8e90 rbx 0xffff800021fa8f40 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff823bfbdf kprintf+0x16f r9 0x1 r10 0x2 r11 0xf569235f8512387c r12 0x3000000008 r13 0xffff800021fa8ea0 r14 0x100 r15 0x1 rip 0xffffffff8236cd38 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021fa8e80 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=138673 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc4e8,0xffffffff828e3090 process=0xffff800021f80bd0 user=0xffff800021fa4000, vmspace=0xfffffd806e8ff5c8 estcpu=36, cpticks=8, pctcpu=0.0 user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46553 339286 68589 0 7 0 syz-executor.0 *46553 138673 68589 0 7 0x4000000 syz-executor.0 96435 417676 57653 0 3 0x82 nanosleep syz-executor.1 95068 43889 0 0 3 0x14200 bored sosplice 87188 435061 0 0 3 0x14280 nfsidl nfsio 19717 143581 0 0 3 0x14280 nfsidl nfsio 66107 418218 0 0 3 0x14280 nfsidl nfsio 17303 16845 0 0 3 0x14280 nfsidl nfsio 60313 42475 0 0 3 0x14280 nfsidl nfsio 80719 521172 0 0 3 0x14280 nfsidl nfsio 20315 127830 0 0 3 0x14280 nfsidl nfsio 91253 403550 0 0 3 0x14280 nfsidl nfsio 28906 288739 0 0 3 0x14280 nfsidl nfsio 27681 17636 0 0 3 0x14280 nfsidl nfsio 62707 478268 0 0 3 0x14280 nfsidl nfsio 38772 92508 0 0 3 0x14280 nfsidl nfsio 66176 482976 0 0 3 0x14280 nfsidl nfsio 44057 223691 0 0 3 0x14280 nfsidl nfsio 49808 399839 0 0 3 0x14280 nfsidl nfsio 65482 438102 0 0 3 0x14280 nfsidl nfsio 30169 54428 0 0 3 0x14280 nfsidl nfsio 84789 516692 0 0 3 0x14280 nfsidl nfsio 11027 233901 0 0 3 0x14280 nfsidl nfsio 2953 9560 0 0 3 0x14280 nfsidl nfsio 68589 379854 57653 0 3 0x82 nanosleep syz-executor.0 57653 83167 15438 0 3 0x82 thrsleep syz-fuzzer 57653 450243 15438 0 3 0x4000082 thrsleep syz-fuzzer 57653 466756 15438 0 3 0x4000082 thrsleep syz-fuzzer 57653 360483 15438 0 3 0x4000082 kqread syz-fuzzer 57653 434745 15438 0 3 0x4000082 thrsleep syz-fuzzer 57653 15599 15438 0 3 0x4000082 thrsleep syz-fuzzer 57653 298357 15438 0 3 0x4000082 thrsleep syz-fuzzer 57653 394603 15438 0 3 0x4000082 thrsleep syz-fuzzer 15438 210877 9520 0 3 0x10008a pause ksh 9520 450086 68371 0 3 0x92 select sshd 63324 254549 1 0 3 0x100083 ttyin getty 68371 168315 1 0 3 0x80 select sshd 43948 139218 72263 74 3 0x100092 bpf pflogd 72263 36741 1 0 3 0x80 netio pflogd 1454 297896 61521 73 3 0x100090 kqread syslogd 61521 390289 1 0 3 0x100082 netio syslogd 43266 156167 1 77 3 0x100090 poll dhclient 16560 132798 1 0 3 0x80 poll dhclient 60590 403837 0 0 3 0x14200 bored smr 95093 406814 0 0 2 0x14200 zerothread 35011 412695 0 0 3 0x14200 aiodoned aiodoned 87077 169331 0 0 3 0x14200 syncer update 33662 227705 0 0 3 0x14200 cleaner cleaner 58900 303291 0 0 3 0x14200 reaper reaper 65416 24992 0 0 3 0x14200 pgdaemon pagedaemon 50767 55389 0 0 3 0x14200 bored crynlk 25669 151956 0 0 3 0x14200 bored crypto 88585 402018 0 0 3 0x40014200 acpi0 acpi0 50702 359180 0 0 3 0x40014200 idle1 64301 200838 0 0 3 0x14200 bored softnet 215 167827 0 0 3 0x14200 bored systqmp 25924 123199 0 0 3 0x14200 bored systq 43963 100326 0 0 3 0x40014200 bored softclock 33976 30621 0 0 3 0x40014200 idle0 1 184301 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 (0xffffffff828ecf00) #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 46553 (syz-executor.0) thread 0xffff800020e38af0 (138673) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828dc730) #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 (0xffffffff828ecf00) #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 9541 6800K 7177K 78643K 13187 0 pcb 13 8K 8K 78643K 83 0 rtable 93 4K 6K 78643K 433 0 ifaddr 73 15K 16K 78643K 166 0 counters 43 33K 34K 78643K 71 0 ioctlops 0 0K 4K 78643K 1583 0 iov 1 2K 16K 78643K 41 0 mount 1 1K 1K 78643K 1 0 vnodes 1231 77K 77K 78643K 2386 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 95 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 698 0 sigio 0 0K 0K 78643K 8 0 proc 66 63K 95K 78643K 517 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 59 0 in_multi 64 3K 3K 78643K 165 0 ether_multi 1 0K 0K 78643K 14 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 247 0 pfkey data 0 0K 0K 78643K 2 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 179 76K 88K 78643K 3127 0 UVM aobj 22 6K 6K 78643K 23 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 59 0 NDP 10 0K 0K 78643K 38 0 temp 119 3866K 3930K 78643K 11314 0 kqueue 3 4K 14K 78643K 19 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 8 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 45 0 43 1 0 1 1 0 8 0 rtentry 112 82 0 49 2 0 2 2 0 8 0 unpcb 120 500 0 489 2 1 1 2 0 8 0 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpqe 32 290 0 290 1 1 0 1 0 8 0 tcpcb 544 1021 0 990 9 5 4 5 0 8 1 inpcb 296 1401 0 1392 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 25 0 20 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1136 3 0 3 1 0 1 1 0 8 1 pffrag 232 4 0 4 1 1 0 1 0 482 0 pffrnode 88 4 0 4 1 1 0 1 0 8 0 pffrent 40 51 0 51 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 pfrktable 1344 14 0 12 2 1 1 1 0 8 0 pfstitem 24 45 0 22 1 0 1 1 0 8 0 pfstkey 112 45 0 22 2 0 2 2 0 8 0 pfstate 328 45 0 22 4 0 4 4 0 8 0 pfrule 1360 38 0 24 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 321 0 188 16 3 13 14 0 8 1 art_table 32 322 0 188 2 0 2 2 0 8 0 art_node 16 80 0 52 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 8 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 90 0 80 1 0 1 1 0 8 0 shmpl 112 20 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2427 0 1024 88 0 88 88 0 8 0 ffsino 272 2427 0 1024 94 0 94 94 0 8 0 nchpl 144 3611 0 2015 60 0 60 60 0 8 0 uvmvnodes 72 3480 0 0 64 0 64 64 0 8 0 vnodes 208 3480 0 0 184 0 184 184 0 8 0 namei 1024 10457 0 10457 2 1 1 1 0 8 1 percpumem 16 46 0 14 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 11 0 7 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 3 2 1 1 1 0 8 0 scxspl 192 10025 0 10025 13 12 1 7 0 8 1 plimitpl 152 46 0 38 1 0 1 1 0 8 0 sigapl 424 931 0 879 6 0 6 6 0 8 0 futexpl 56 9291 0 9291 2 1 1 1 0 8 1 knotepl 112 97 0 77 1 0 1 1 0 8 0 kqueuepl 144 80 0 77 1 0 1 1 0 8 0 pipepl 304 176 0 165 4 2 2 2 0 8 1 fdescpl 496 895 0 879 3 0 3 3 0 8 0 filepl 152 6020 0 5913 8 3 5 7 0 8 0 lockfpl 104 109 0 108 1 0 1 1 0 8 0 lockfspl 48 42 0 41 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 301 0 292 1 0 1 1 0 8 0 zombiepl 144 879 0 878 1 0 1 1 0 8 0 processpl 992 931 0 878 7 0 7 7 0 8 0 procpl 624 2253 0 2192 7 1 6 6 0 8 1 sosppl 128 8 0 8 2 1 1 1 0 8 1 sockpl 400 1953 0 1931 7 3 4 5 0 8 1 mcl64k 65536 169 0 0 22 0 22 22 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 202 0 0 25 0 25 25 0 8 0 mtagpl 96 28 0 0 1 0 1 1 0 8 0 mbufpl 256 372 0 0 20 0 20 20 0 8 0 mbufpl: pool(0xffffffff828ecef0:mbufpl): free list modified: page 0xfffffd807e94d000; item ordinal 0; addr 0xfffffd807e94d900 (p 0xfffffd806885c000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd807e94d000; item ordinal 0; addr 0xfffffd807e94d900 (p 0xfffffd806885c000); offset 0x0=0x0 mbufpl: pool(0xffffffff828ecef0:mbufpl): page inconsistency: page 0xfffffd807e94d000; item ordinal 1; addr 0xbc7e29ad4892ca36 bufpl 280 4396 0 127 305 0 305 305 0 8 0 anonpl 16 99645 0 79752 86 6 80 80 0 124 0 amapchunkpl 152 5397 0 5084 30 15 15 26 0 158 0 amappl16 192 3787 0 2793 52 2 50 50 0 8 0 amappl15 184 68 0 67 1 0 1 1 0 8 0 amappl14 176 266 0 261 1 0 1 1 0 8 0 amappl13 168 36 0 33 1 0 1 1 0 8 0 amappl12 160 21 0 18 1 0 1 1 0 8 0 amappl11 152 56 0 40 1 0 1 1 0 8 0 amappl10 144 90 0 83 1 0 1 1 0 8 0 amappl9 136 704 0 700 1 0 1 1 0 8 0 amappl8 128 699 0 659 2 0 2 2 0 8 0 amappl7 120 123 0 110 1 0 1 1 0 8 0 amappl6 112 35 0 26 1 0 1 1 0 8 0 amappl5 104 791 0 775 1 0 1 1 0 8 0 amappl4 96 492 0 469 1 0 1 1 0 8 0 amappl3 88 394 0 385 1 0 1 1 0 8 0 amappl2 80 6182 0 6112 2 0 2 2 0 8 0 amappl1 72 34628 0 34180 23 13 10 18 0 8 0 amappl 80 2559 0 2475 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 22 0 1 1 0 1 1 0 8 0 uaddrrnd 24 906 0 886 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 906 0 886 1 0 1 1 0 8 0 vmmpekpl 168 10315 0 10269 3 0 3 3 0 8 0 vmmpepl 168 120426 0 118211 129 32 97 119 0 357 0 vmsppl 368 905 0 886 2 0 2 2 0 8 0 pdppl 4096 1819 0 1776 6 0 6 6 0 8 0 pvpl 32 311771 0 288582 196 8 188 191 0 265 0 pmappl 232 905 0 886 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 311 0 16 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82721ff0) 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 __sanitizer_cov_trace_cmp4(ffffffff828dc528,ffffffff828dc528) at __sanitizer_cov_trace_cmp4 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffcf040, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82721ff0) 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 __sanitizer_cov_trace_cmp4(ffffffff828dc528,ffffffff828dc528) at __sanitizer_cov_trace_cmp4 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffcf040, 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(ffffffff8249cdc0) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff828ecef0,2,ffff800021fa9048) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828ecef0,2) 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(86139,ffff800021fa9430,11) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff800021fa9200) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd80646d4de8,ffff800021fa9430,11,fffffd807f7bfb40) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80683946a0,ffff800021fa9430,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e38af0,6,ffff800021fa9430,1,ffff800021fa9520) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e38af0,ffff800021fa94d8,ffff800021fa9520) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff800021fa95a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021fa95a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc946cf026b0, count: 2 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8249cdc0) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff828ecef0,2,ffff800021fa9048) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828ecef0,2) 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(86139,ffff800021fa9430,11) at switchwrite+0x260 sys/net/switchctl.c:260 spec_write(ffff800021fa9200) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd80646d4de8,ffff800021fa9430,11,fffffd807f7bfb40) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd80683946a0,ffff800021fa9430,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff800020e38af0,6,ffff800021fa9430,1,ffff800021fa9520) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff800020e38af0,ffff800021fa94d8,ffff800021fa9520) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff800021fa95a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021fa95a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc946cf026b0, count: -13