panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8069363800+16 0x0!=0x8ea3d3af7cf79674 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 67038 89270 0 0 0x4000000 1K syz-executor.0 323141 89574 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_makespace(fffffd80687c4900,0,c,ffff800024115314) at m_makespace+0x348 m_get sys/kern/uipc_mbuf.c:250 [inline] m_makespace(fffffd80687c4900,0,c,ffff800024115314) at m_makespace+0x348 sys/kern/uipc_mbuf.c:1176 swofp_send_error(ffff800000b1d000,fffffd80687c4900,0,0) at swofp_send_error+0xa7 sys/net/switchofp.c:4808 swofp_recv_hello(ffff800000b1d000,fffffd80687c4900) at swofp_recv_hello+0x62 sys/net/switchofp.c:4760 swofp_input(ffff800000b1d000,fffffd80687c4900) at swofp_input+0x1d6 sys/net/switchofp.c:4714 switchwrite(86135,ffff800024115770,1) at switchwrite+0x3b0 sys/net/switchctl.c:282 spec_write(ffff800024115540) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8068026dd8,ffff800024115770,1,fffffd807f7bf660) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca8e980,ffff800024115770,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241962a8,3,ffff800024115770,1,ffff800024115860) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff8000241962a8,ffff800024115818,ffff800024115860) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 end trace frame: 0xffff8000241158d0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8069363800+16 0x0!=0x8ea3d3af7cf79674 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_makespace(fffffd80687c4900,0,c,ffff800024115314) at m_makespace+0x348 m_get sys/kern/uipc_mbuf.c:250 [inline] m_makespace(fffffd80687c4900,0,c,ffff800024115314) at m_makespace+0x348 sys/kern/uipc_mbuf.c:1176 swofp_send_error(ffff800000b1d000,fffffd80687c4900,0,0) at swofp_send_error+0xa7 sys/net/switchofp.c:4808 swofp_recv_hello(ffff800000b1d000,fffffd80687c4900) at swofp_recv_hello+0x62 sys/net/switchofp.c:4760 swofp_input(ffff800000b1d000,fffffd80687c4900) at swofp_input+0x1d6 sys/net/switchofp.c:4714 switchwrite(86135,ffff800024115770,1) at switchwrite+0x3b0 sys/net/switchctl.c:282 spec_write(ffff800024115540) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8068026dd8,ffff800024115770,1,fffffd807f7bf660) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca8e980,ffff800024115770,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241962a8,3,ffff800024115770,1,ffff800024115860) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff8000241962a8,ffff800024115818,ffff800024115860) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff8000241158e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000241158e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb741bff110, count: -16 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800024115080 rbx 0xffff800024115130 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffff800024115040 r9 0xffffffff82193d9f kprintf+0x16f r10 0x1 r11 0x9cc39e3e5ed4a034 r12 0x3000000008 r13 0xffff800024115090 r14 0x100 r15 0x1 rip 0xffffffff820d5aa8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800024115070 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=67038 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800024196030,0xffffffff82925628 process=0xffff800024182008 user=0xffff800024110000, vmspace=0xfffffd806e8f5008 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 89270 32389 72483 0 2 0 syz-executor.0 *89270 67038 72483 0 7 0x4000000 syz-executor.0 51143 464045 0 0 3 0x14280 nfsidl nfsio 68459 362670 0 0 3 0x14280 nfsidl nfsio 8966 494429 0 0 3 0x14280 nfsidl nfsio 44500 492544 0 0 3 0x14280 nfsidl nfsio 2959 184250 0 0 3 0x14280 nfsidl nfsio 68360 478696 0 0 3 0x14280 nfsidl nfsio 52599 296581 0 0 3 0x14280 nfsidl nfsio 25514 415666 0 0 3 0x14280 nfsidl nfsio 87494 403088 0 0 3 0x14280 nfsidl nfsio 10545 324658 0 0 3 0x14280 nfsidl nfsio 75636 292341 0 0 3 0x14280 nfsidl nfsio 53932 359491 0 0 3 0x14280 nfsidl nfsio 3769 224102 0 0 3 0x14280 nfsidl nfsio 56999 404826 0 0 3 0x14280 nfsidl nfsio 52593 271670 0 0 3 0x14280 nfsidl nfsio 4388 451451 0 0 3 0x14280 nfsidl nfsio 74639 126196 0 0 3 0x14280 nfsidl nfsio 82808 134780 0 0 3 0x14280 nfsidl nfsio 83451 173665 0 0 3 0x14280 nfsidl nfsio 68644 32246 0 0 3 0x14280 nfsidl nfsio 43493 378116 8713 0 3 0x82 nanosleep syz-executor.1 72483 273632 8713 0 3 0x82 nanosleep syz-executor.0 8713 120157 78947 0 3 0x82 thrsleep syz-fuzzer 8713 3125 78947 0 3 0x4000082 thrsleep syz-fuzzer 8713 231472 78947 0 3 0x4000082 thrsleep syz-fuzzer 8713 191718 78947 0 3 0x4000082 thrsleep syz-fuzzer 8713 276102 78947 0 3 0x4000082 kqread syz-fuzzer 8713 212019 78947 0 3 0x4000082 thrsleep syz-fuzzer 8713 482761 78947 0 3 0x4000082 thrsleep syz-fuzzer 8713 68610 78947 0 3 0x4000082 thrsleep syz-fuzzer 78947 76085 14614 0 3 0x10008a pause ksh 14614 249926 7123 0 3 0x92 select sshd 94158 407174 1 0 3 0x100083 ttyin getty 7123 24984 1 0 3 0x80 select sshd 11542 267098 38115 74 3 0x100092 bpf pflogd 38115 325341 1 0 3 0x80 netio pflogd 87896 334122 485 73 3 0x100090 kqread syslogd 485 145980 1 0 3 0x100082 netio syslogd 49798 517235 1 77 3 0x100090 poll dhclient 42037 105923 1 0 3 0x80 poll dhclient 46651 335762 0 0 3 0x14200 bored smr 39433 400731 0 0 2 0x14200 zerothread 9561 18164 0 0 3 0x14200 aiodoned aiodoned 67224 434654 0 0 3 0x14200 syncer update 52846 208686 0 0 3 0x14200 cleaner cleaner 89574 323141 0 0 7 0x14200 reaper 91142 454196 0 0 3 0x14200 pgdaemon pagedaemon 47345 100416 0 0 3 0x14200 bored crynlk 38802 369644 0 0 3 0x14200 bored crypto 62876 59734 0 0 3 0x40014200 acpi0 acpi0 67112 55574 0 0 3 0x40014200 idle1 73686 139214 0 0 3 0x14200 bored softnet 9755 454822 0 0 3 0x14200 bored systqmp 22745 128687 0 0 3 0x14200 bored systq 95697 148529 0 0 3 0x40014200 bored softclock 76345 367256 0 0 3 0x40014200 idle0 1 500328 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd80650b9db0) #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 pmap_do_remove+0x88 rcr3 machine/cpufunc.h:141 [inline] #3 pmap_do_remove+0x88 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:414 [inline] #3 pmap_do_remove+0x88 sys/arch/amd64/amd64/pmap.c:1756 #4 uvm_map_teardown+0x195 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #4 uvm_map_teardown+0x195 sys/uvm/uvm_map.c:2739 #5 uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 #6 uvm_exit+0x29 sys/uvm/uvm_glue.c:297 #7 reaper+0x189 sys/kern/kern_exit.c:456 #8 proc_trampoline+0x1c Process 89270 (syz-executor.0) thread 0xffff8000241962a8 (67038) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828d0898) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9503 6542K 6602K 78643K 10718 0 pcb 13 8K 8K 78643K 35 0 rtable 96 3K 4K 78643K 220 0 ifaddr 57 12K 12K 78643K 71 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 45 0 ioctlops 0 0K 4K 78643K 1503 0 iov 1 2K 16K 78643K 8 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1261 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 0K 1K 78643K 30 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 153 0 sigio 0 0K 0K 78643K 2 0 proc 60 63K 95K 78643K 456 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 8 0 in_multi 23 1K 2K 78643K 44 0 ether_multi 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 31 148K 148K 78643K 31 0 exec 0 0K 1K 78643K 211 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 171 44K 44K 78643K 1470 0 UVM aobj 15 2K 2K 78643K 15 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 8 0 NDP 9 0K 0K 78643K 16 0 temp 94 3885K 3948K 78643K 2341 0 kqueue 3 4K 4K 78643K 3 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 6 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 23 0 21 1 0 1 1 0 8 0 rtentry 112 48 0 10 2 0 2 2 0 8 0 unpcb 120 91 0 81 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 876 0 876 1 0 1 1 0 8 1 tcpcb 592 42 0 30 2 0 2 2 0 8 0 inpcb 296 130 0 123 2 0 2 2 0 8 1 nd6 48 9 0 5 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 ppxss 1136 1 0 1 1 0 1 1 0 8 1 pffrag 232 2 0 2 1 0 1 1 0 482 1 pffrnode 88 2 0 2 1 0 1 1 0 8 1 pffrent 40 4 0 4 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 21 0 2 1 0 1 1 0 8 0 pfstkey 112 21 0 2 1 0 1 1 0 8 0 pfstate 328 21 0 2 2 0 2 2 0 8 0 pfrule 1360 25 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 203 0 40 13 0 13 13 0 8 2 art_table 32 204 0 40 2 0 2 2 0 8 0 art_node 16 47 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 12 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1557 0 152 88 0 88 88 0 8 0 ffsino 272 1557 0 152 95 1 94 94 0 8 0 nchpl 144 1942 0 333 60 0 60 60 0 8 0 uvmvnodes 72 1635 0 0 30 0 30 30 0 8 0 vnodes 208 1635 0 0 87 0 87 87 0 8 0 namei 1024 5539 0 5539 2 1 1 1 0 8 1 percpumem 16 33 0 1 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 2 1 0 1 1 0 8 0 scxspl 200 5629 0 5629 8 2 6 7 0 8 6 plimitpl 152 19 0 11 1 0 1 1 0 8 0 sigapl 424 388 0 337 6 0 6 6 0 8 0 futexpl 56 1872 0 1872 1 0 1 1 0 8 1 knotepl 112 62 0 42 1 0 1 1 0 8 0 kqueuepl 152 8 0 6 1 0 1 1 0 8 0 pipepl 304 92 0 81 2 0 2 2 0 8 1 fdescpl 496 353 0 337 3 0 3 3 0 8 0 filepl 152 2110 0 2007 6 1 5 5 0 8 0 lockfpl 104 9 0 8 1 0 1 1 0 8 0 lockfspl 48 5 0 4 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 96 0 87 1 0 1 1 0 8 0 zombiepl 144 337 0 336 2 1 1 1 0 8 0 processpl 1008 388 0 336 8 1 7 7 0 8 0 procpl 632 661 0 601 7 1 6 6 0 8 0 sockpl 400 248 0 229 4 1 3 3 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 301 0 0 37 0 37 37 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 315 0 0 19 0 19 19 0 8 0 bufpl 280 3430 0 126 236 0 236 236 0 8 0 anonpl 16 49500 0 31273 75 1 74 74 0 124 0 amapchunkpl 152 1998 0 1677 15 0 15 15 0 158 0 amappl16 192 1478 0 650 42 0 42 42 0 8 0 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 1 0 0 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 30 0 24 1 0 1 1 0 8 0 amappl11 152 118 0 101 1 0 1 1 0 8 0 amappl10 144 28 0 22 1 0 1 1 0 8 0 amappl9 136 370 0 368 1 0 1 1 0 8 0 amappl8 128 352 0 311 2 0 2 2 0 8 0 amappl7 120 124 0 111 1 0 1 1 0 8 0 amappl6 112 95 0 87 1 0 1 1 0 8 0 amappl5 104 254 0 237 1 0 1 1 0 8 0 amappl4 96 482 0 453 1 0 1 1 0 8 0 amappl3 88 124 0 115 1 0 1 1 0 8 0 amappl2 80 1877 0 1801 2 0 2 2 0 8 0 amappl1 72 19008 0 18534 23 13 10 18 0 8 0 amappl 80 945 0 858 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 14 0 0 1 0 1 1 0 8 0 uaddrrnd 24 357 0 339 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 357 0 339 1 0 1 1 0 8 0 vmmpekpl 168 6755 0 6715 2 0 2 2 0 8 0 vmmpepl 168 51328 0 49189 121 8 113 113 0 357 18 vmsppl 368 356 0 338 2 0 2 2 0 8 0 pdppl 4096 721 0 678 7 1 6 6 0 8 0 pvpl 32 167256 0 145723 179 0 179 179 0 265 4 pmappl 232 356 0 338 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 279 0 8 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff827a7ff0) 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_pc() at __sanitizer_cov_trace_pc+0x5f sys/dev/kcov.c:118 uvm_unmap_detach(ffff800020dcf760,1) at uvm_unmap_detach+0xe7 sys/uvm/uvm_map.c:1581 uvm_map_teardown(fffffd806e8f5458) at uvm_map_teardown+0x25c sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd806e8f5458) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff8000241827e8) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020d898b0) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff827a7ff0) 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_pc() at __sanitizer_cov_trace_pc+0x5f sys/dev/kcov.c:118 uvm_unmap_detach(ffff800020dcf760,1) at uvm_unmap_detach+0xe7 sys/uvm/uvm_map.c:1581 uvm_map_teardown(fffffd806e8f5458) at uvm_map_teardown+0x25c sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd806e8f5458) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff8000241827e8) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020d898b0) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -9 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(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_makespace(fffffd80687c4900,0,c,ffff800024115314) at m_makespace+0x348 m_get sys/kern/uipc_mbuf.c:250 [inline] m_makespace(fffffd80687c4900,0,c,ffff800024115314) at m_makespace+0x348 sys/kern/uipc_mbuf.c:1176 swofp_send_error(ffff800000b1d000,fffffd80687c4900,0,0) at swofp_send_error+0xa7 sys/net/switchofp.c:4808 swofp_recv_hello(ffff800000b1d000,fffffd80687c4900) at swofp_recv_hello+0x62 sys/net/switchofp.c:4760 swofp_input(ffff800000b1d000,fffffd80687c4900) at swofp_input+0x1d6 sys/net/switchofp.c:4714 switchwrite(86135,ffff800024115770,1) at switchwrite+0x3b0 sys/net/switchctl.c:282 spec_write(ffff800024115540) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8068026dd8,ffff800024115770,1,fffffd807f7bf660) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca8e980,ffff800024115770,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241962a8,3,ffff800024115770,1,ffff800024115860) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff8000241962a8,ffff800024115818,ffff800024115860) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 end trace frame: 0xffff8000241158d0, count: 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82407a62) at panic+0x164 sys/kern/subr_prf.c:218 pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c6318) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c6318,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_makespace(fffffd80687c4900,0,c,ffff800024115314) at m_makespace+0x348 m_get sys/kern/uipc_mbuf.c:250 [inline] m_makespace(fffffd80687c4900,0,c,ffff800024115314) at m_makespace+0x348 sys/kern/uipc_mbuf.c:1176 swofp_send_error(ffff800000b1d000,fffffd80687c4900,0,0) at swofp_send_error+0xa7 sys/net/switchofp.c:4808 swofp_recv_hello(ffff800000b1d000,fffffd80687c4900) at swofp_recv_hello+0x62 sys/net/switchofp.c:4760 swofp_input(ffff800000b1d000,fffffd80687c4900) at swofp_input+0x1d6 sys/net/switchofp.c:4714 switchwrite(86135,ffff800024115770,1) at switchwrite+0x3b0 sys/net/switchctl.c:282 spec_write(ffff800024115540) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd8068026dd8,ffff800024115770,1,fffffd807f7bf660) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca8e980,ffff800024115770,1) at vn_write+0x198 sys/kern/vfs_vnops.c:414 dofilewritev(ffff8000241962a8,3,ffff800024115770,1,ffff800024115860) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_pwritev(ffff8000241962a8,ffff800024115818,ffff800024115860) at sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3338 syscall(ffff8000241158e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000241158e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb741bff110, count: -16