panic:WA RpNoIolNG_:ca SchPeL _NiOTt eLmO_WmEaRgiEcD _OcNh eScYkS:C AmLbLu fp2 l3 c1p7u6 7f1r2e2e 9 lEiXsIt T mo0d ai fiStopped at savectx+0xb1: movl $0,%gs:0x530 TID PID UID PRFLAGS PFLAGS CPU COMMAND * 51926 31232 0 0x2 0 0 syz-executor.1 68307 83495 0 0x12 0 1 sshd savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffdfcd0, 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 0xfffffd806d362900+16 0x0!=0x2c6b99c32c4c0757 ddb{0}> trace savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffdfcd0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800020efadb0 rbx 0 rdx 0x8b rcx 0x2 rax 0x39 r8 0xffffffff81bc9d4f kprintf+0x16f r9 0x1 r10 0x2 r11 0x1b6216ab73a0d71 r12 0 r13 0 r14 0xffff800020ddd5f8 r15 0 rip 0xffffffff819b33f1 savectx+0xb1 cs 0x8 rflags 0x46 rsp 0xffff800020efad30 ss 0x10 savectx+0xb1: movl $0,%gs:0x530 ddb{0}> show proc PROC (syz-executor.1) pid=51926 stat=onproc flags process=2 proc=0 pri=60, usrpri=60, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc278,0xffff800020ddd128 process=0xffff800020df0010 user=0xffff800020ef5000, vmspace=0xfffffd807f000cf0 estcpu=36, cpticks=1, pctcpu=0.18 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 33003 365612 31232 0 2 0 syz-executor.1 14933 98287 55294 0 3 0x2 biowait syz-executor.0 *31232 51926 55294 0 7 0x2 syz-executor.1 55294 210517 54620 0 3 0x82 thrsleep syz-fuzzer 55294 101510 54620 0 3 0x4000082 nanosleep syz-fuzzer 55294 183753 54620 0 3 0x4000082 thrsleep syz-fuzzer 55294 309520 54620 0 3 0x4000082 kqread syz-fuzzer 55294 195361 54620 0 3 0x4000082 thrsleep syz-fuzzer 55294 448572 54620 0 3 0x4000082 thrsleep syz-fuzzer 55294 385572 54620 0 3 0x4000082 thrsleep syz-fuzzer 55294 440980 54620 0 3 0x4000082 thrsleep syz-fuzzer 55294 475360 54620 0 3 0x4000082 nanosleep syz-fuzzer 55294 387092 54620 0 3 0x4000082 thrsleep syz-fuzzer 54620 323724 83495 0 3 0x10008a pause ksh 83495 68307 19407 0 7 0x12 sshd 73670 120967 1 0 3 0x100083 ttyin getty 19407 92585 1 0 3 0x80 select sshd 55692 359294 7110 74 3 0x100092 bpf pflogd 7110 370358 1 0 3 0x80 netio pflogd 88006 111862 37528 73 3 0x100090 kqread syslogd 37528 361666 1 0 3 0x100082 netio syslogd 74797 523304 1 77 3 0x100090 poll dhclient 53544 191163 1 0 3 0x80 poll dhclient 42909 94140 0 0 3 0x14200 bored smr 54788 319627 0 0 2 0x14200 zerothread 24614 514742 0 0 3 0x14200 aiodoned aiodoned 45271 277923 0 0 3 0x14200 syncer update 69233 101431 0 0 3 0x14200 cleaner cleaner 39719 97305 0 0 3 0x14200 reaper reaper 98081 301057 0 0 3 0x14200 pgdaemon pagedaemon 75227 516223 0 0 3 0x14200 bored crynlk 65804 302231 0 0 3 0x14200 bored crypto 44741 95549 0 0 3 0x40014200 acpi0 acpi0 30309 474144 0 0 3 0x40014200 idle1 17584 247329 0 0 3 0x14200 bored softnet 11960 233929 0 0 3 0x14200 bored systqmp 5299 7222 0 0 3 0x14200 bored systq 88314 217944 0 0 3 0x40014200 bored softclock 22853 282771 0 0 3 0x40014200 idle0 1 187506 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive sched_lock &sched_lock r = 1 (0xffffffff8290aa80) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 wakeup_n+0x37 sys/kern/kern_synch.c:589 #2 uvm_pmr_getpages+0xd80 sys/uvm/uvm_pmemrange.c:1172 #3 uvm_pglistalloc+0x362 sys/uvm/uvm_page.c:790 #4 uvm_km_kmemalloc_pla+0x238 sys/uvm/uvm_km.c:367 #5 uvm_uarea_alloc+0x51 sys/uvm/uvm_glue.c:274 #6 fork1+0x271 sys/kern/kern_fork.c:365 #7 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff8292ead8) #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 uvm_pmr_getpages+0xd2c sys/uvm/uvm_pmemrange.c:1170 #4 uvm_pglistalloc+0x362 sys/uvm/uvm_page.c:790 #5 uvm_km_kmemalloc_pla+0x238 sys/uvm/uvm_km.c:367 #6 uvm_uarea_alloc+0x51 sys/uvm/uvm_glue.c:274 #7 fork1+0x271 sys/kern/kern_fork.c:365 #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 Process 14933 (syz-executor.0) thread 0xffff800020ddd118 (98287) exclusive rrwlock inode r = 0 (0xfffffd8064955e70) #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+0x1e2 sys/ufs/ffs/ffs_alloc.c:394 #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 (0xfffffd806b1fb4d8) #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 Process 31232 (syz-executor.1) thread 0xffff800020ddd5f8 (51926) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8292e770) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:570 #2 Xsyscall+0x128 exclusive sched_lock &sched_lock r = 1 (0xffffffff8290aa80) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 wakeup_n+0x37 sys/kern/kern_synch.c:589 #2 uvm_pmr_getpages+0xd80 sys/uvm/uvm_pmemrange.c:1172 #3 uvm_pglistalloc+0x362 sys/uvm/uvm_page.c:790 #4 uvm_km_kmemalloc_pla+0x238 sys/uvm/uvm_km.c:367 #5 uvm_uarea_alloc+0x51 sys/uvm/uvm_glue.c:274 #6 fork1+0x271 sys/kern/kern_fork.c:365 #7 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff8292ead8) #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 uvm_pmr_getpages+0xd2c sys/uvm/uvm_pmemrange.c:1170 #4 uvm_pglistalloc+0x362 sys/uvm/uvm_page.c:790 #5 uvm_km_kmemalloc_pla+0x238 sys/uvm/uvm_km.c:367 #6 uvm_uarea_alloc+0x51 sys/uvm/uvm_glue.c:274 #7 fork1+0x271 sys/kern/kern_fork.c:365 #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 Process 83495 (sshd) thread 0xffff800020e40ae0 (68307) exclusive rwlock netlock r = 0 (0xffffffff82709b58) #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:543 #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 9481 6402K 6854K 78643K 10735 0 pcb 13 8K 8K 78643K 41 0 rtable 113 12K 12K 78643K 244 0 ifaddr 50 11K 12K 78643K 68 0 counters 43 33K 34K 78643K 47 0 ioctlops 0 0K 4K 78643K 1511 0 iov 0 0K 16K 78643K 11 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1268 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 18 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 126 0 proc 61 63K 95K 78643K 445 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 6 0 in_multi 33 2K 2K 78643K 36 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 37 175K 175K 78643K 37 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 113 38K 38K 78643K 1319 0 UVM aobj 9 2K 2K 78643K 9 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 24 0 NDP 7 0K 0K 78643K 13 0 temp 77 3856K 3921K 78643K 2476 0 kqueue 3 4K 6K 78643K 12 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 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 29 0 27 1 0 1 1 0 8 0 rtentry 112 46 0 1 2 0 2 2 0 8 0 unpcb 120 110 0 100 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 96 0 96 2 1 1 1 0 8 1 tcpcb 544 46 0 41 1 0 1 1 0 8 0 inpcb 296 232 0 224 2 0 2 2 0 8 1 nd6 48 7 0 0 1 0 1 1 0 8 0 pfstscr 40 4 0 2 1 0 1 1 0 8 0 pffrag 232 1 0 1 1 0 1 1 0 482 1 pffrnode 88 1 0 1 1 0 1 1 0 8 1 pffrent 40 45 0 45 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 23 0 0 1 0 1 1 0 8 0 pfstkey 112 25 0 2 1 0 1 1 0 8 0 pfstate 328 23 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 256 195 0 0 13 0 13 13 0 8 0 art_table 32 196 0 0 2 0 2 2 0 8 0 art_node 16 45 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 6 1 0 1 1 0 8 0 semapl 112 16 0 6 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 1555 0 146 89 0 89 89 0 8 0 ffsino 272 1555 0 146 95 0 95 95 0 8 0 nchpl 144 1890 0 282 60 0 60 60 0 8 0 uvmvnodes 72 1632 0 0 30 0 30 30 0 8 0 vnodes 208 1632 0 0 86 0 86 86 0 8 0 namei 1024 5074 0 5073 1 0 1 1 0 8 0 percpumem 16 34 0 2 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 scxspl 192 5832 0 5831 6 1 5 5 0 8 4 plimitpl 152 23 0 15 1 0 1 1 0 8 0 sigapl 424 341 0 310 4 0 4 4 0 8 0 futexpl 56 1596 0 1596 1 0 1 1 0 8 1 knotepl 112 69 0 50 1 0 1 1 0 8 0 kqueuepl 144 17 0 15 1 0 1 1 0 8 0 pipepl 304 87 0 77 2 0 2 2 0 8 1 fdescpl 496 326 0 310 3 0 3 3 0 8 0 filepl 152 1829 0 1729 5 0 5 5 0 8 1 lockfpl 104 61 0 60 1 0 1 1 0 8 0 lockfspl 48 22 0 21 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 96 140 0 131 1 0 1 1 0 8 0 zombiepl 144 310 0 310 1 0 1 1 0 8 1 processpl 992 341 0 310 5 0 5 5 0 8 1 procpl 624 554 0 514 4 0 4 4 0 8 0 sockpl 400 371 0 351 4 0 4 4 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 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 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 185 0 0 23 0 23 23 0 8 0 mtagpl 96 16 0 0 1 0 1 1 0 8 0 mbufpl 256 271 0 0 16 0 16 16 0 8 0 bufpl 280 3626 0 135 250 0 250 250 0 8 0 anonpl 16 45603 0 29065 69 1 68 68 0 124 0 amapchunkpl 152 1594 0 1451 9 0 9 9 0 158 2 amappl16 192 1429 0 536 46 0 46 46 0 8 1 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 22 0 19 1 0 1 1 0 8 0 amappl13 168 121 0 116 1 0 1 1 0 8 0 amappl12 160 6 0 6 2 2 0 1 0 8 0 amappl11 152 56 0 40 1 0 1 1 0 8 0 amappl10 144 35 0 27 1 0 1 1 0 8 0 amappl9 136 299 0 297 1 0 1 1 0 8 0 amappl8 128 352 0 323 2 0 2 2 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 30 0 23 2 1 1 1 0 8 0 amappl5 104 396 0 382 1 0 1 1 0 8 0 amappl4 96 580 0 550 1 0 1 1 0 8 0 amappl3 88 104 0 99 1 0 1 1 0 8 0 amappl2 80 1649 0 1585 2 0 2 2 0 8 0 amappl1 72 17157 0 16729 23 12 11 18 0 8 1 amappl 80 808 0 765 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 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 328 0 310 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 328 0 310 1 0 1 1 0 8 0 vmmpekpl 168 6476 0 6443 2 0 2 2 0 8 0 vmmpepl 168 47521 0 45493 121 8 113 113 0 357 21 vmsppl 368 327 0 310 2 0 2 2 0 8 0 pdppl 4096 663 0 622 6 0 6 6 0 8 0 pvpl 32 155050 0 135458 167 0 167 167 0 265 5 pmappl 232 327 0 310 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 266 0 3 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: 0x7f7ffffdfcd0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d70ff0) 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(3f8,0,69) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,69) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,69) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(69) at cnputc+0x4c sys/dev/cons.c:239 kputchar(69,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 panic(ffffffff823fee01) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff823fee01) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff828c79e0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c79e0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c79e0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada320) at tcp_output+0x14e6 tcp_usrreq(fffffd806eadee18,9,fffffd806d362400,0,0,ffff800020e40ae0) at tcp_usrreq+0xa55 end trace frame: 0xffff800020e04350, count: 0 ddb{1}> trace x86_ipi_db(ffff800020d70ff0) 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(3f8,0,69) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,69) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,69) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(69) at cnputc+0x4c sys/dev/cons.c:239 kputchar(69,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 panic(ffffffff823fee01) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff823fee01) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff828c79e0) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff828c79e0) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff828c79e0,2) at pool_get+0x91 sys/kern/subr_pool.c:572 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ada320) at tcp_output+0x14e6 tcp_usrreq(fffffd806eadee18,9,fffffd806d362400,0,0,ffff800020e40ae0) at tcp_usrreq+0xa55 sosend(fffffd806eadee18,0,ffff800020e04418,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:555 dofilewritev(ffff800020e40ae0,4,ffff800020e04418,0,ffff800020e04500) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e40ae0,ffff800020e044b0,ffff800020e04500) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e04580) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e04580) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc7a60, count: -19