login: panic: WpARoNoIlN_Gc:a ScPhLe _iNOtTe mL_OmWaEgiREc_Dc OhNe cSkY: SCmbAuLfLp l2 7c9p1u 3f07r1e4e9 lEiXsItT m0o diaf ieStopped at savectx+0xb1: movl $0,%gs:0x530 TID PID UID PRFLAGS PFLAGS CPU COMMAND *208219 25541 0 0x2 0 0 syz-executor.1 320429 66392 0 0x12 0 1 sshd savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffd6180, 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 0xfffffd80767af900+16 0x0!=0x8bb4b9b005889491 ddb{0}> trace savectx() at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffd6180, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800022301850 rbx 0 rdx 0x8b rcx 0x2 rax 0x39 r8 0xffffffff8199641f kprintf+0x16f r9 0x1 r10 0x2 r11 0x4ea0a712d2ea595a r12 0 r13 0 r14 0xffff800020dedd48 r15 0 rip 0xffffffff81fd73f1 savectx+0xb1 cs 0x8 rflags 0x46 rsp 0xffff8000223017d0 ss 0x10 savectx+0xb1: movl $0,%gs:0x530 ddb{0}> show proc PROC (syz-executor.1) pid=208219 stat=onproc flags process=2 proc=0 pri=16, usrpri=58, nice=20 forw=0xffffffffffffffff, list=0xffff800020dec9c8,0xffff800020e0c508 process=0xffff800020e01348 user=0xffff8000222fc000, vmspace=0xfffffd807efff5c0 estcpu=36, cpticks=1, pctcpu=0.9 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61483 505941 25541 0 2 0 syz-executor.1 *25541 208219 95409 0 7 0x2 syz-executor.1 18068 231699 95409 0 3 0x2 biowait syz-executor.0 95409 451885 75074 0 3 0x82 thrsleep syz-fuzzer 95409 397404 75074 0 3 0x4000082 nanosleep syz-fuzzer 95409 227180 75074 0 3 0x4000082 thrsleep syz-fuzzer 95409 290120 75074 0 3 0x4000082 thrsleep syz-fuzzer 95409 276312 75074 0 2 0x4000002 syz-fuzzer 95409 383314 75074 0 3 0x4000082 thrsleep syz-fuzzer 95409 102207 75074 0 3 0x4000082 thrsleep syz-fuzzer 95409 381861 75074 0 3 0x4000082 thrsleep syz-fuzzer 95409 94574 75074 0 3 0x4000082 nanosleep syz-fuzzer 95409 99424 75074 0 3 0x4000082 thrsleep syz-fuzzer 75074 257809 66392 0 3 0x10008a pause ksh 66392 320429 78553 0 7 0x12 sshd 73691 150645 1 0 3 0x100083 ttyin getty 78553 409003 1 0 3 0x80 select sshd 85868 512418 46923 74 3 0x100092 bpf pflogd 46923 503934 1 0 3 0x80 netio pflogd 16699 172443 98426 73 3 0x100090 kqread syslogd 98426 412554 1 0 3 0x100082 netio syslogd 53473 361745 1 77 3 0x100090 poll dhclient 95268 456078 1 0 3 0x80 poll dhclient 22405 371471 0 0 3 0x14200 bored smr 15077 357767 0 0 2 0x14200 zerothread 96492 393545 0 0 3 0x14200 aiodoned aiodoned 35664 118281 0 0 3 0x14200 syncer update 96000 488905 0 0 3 0x14200 cleaner cleaner 32073 272314 0 0 3 0x14200 reaper reaper 40281 452138 0 0 3 0x14200 pgdaemon pagedaemon 43086 516334 0 0 3 0x14200 bored crynlk 95529 308522 0 0 3 0x14200 bored crypto 64417 241685 0 0 3 0x40014200 acpi0 acpi0 88726 285347 0 0 3 0x40014200 idle1 92327 335626 0 0 2 0x14200 softnet 55710 331789 0 0 3 0x14200 bored systqmp 7829 58747 0 0 3 0x14200 bored systq 43427 175283 0 0 3 0x40014200 bored softclock 22917 229127 0 0 3 0x40014200 idle0 1 114017 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 (0xffffffff82906ea0) #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 (0xffffffff828c83c0) #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 25541 (syz-executor.1) thread 0xffff800020dedd48 (208219) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828b6e58) #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 (0xffffffff82906ea0) #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 (0xffffffff828c83c0) #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 18068 (syz-executor.0) thread 0xffff800020dec9c8 (231699) exclusive rrwlock inode r = 0 (0xfffffd806e30d2b8) #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 (0xfffffd806875d700) #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 cache_lookup+0x2bb sys/kern/vfs_cache.c:224 #7 ufs_lookup+0x1bc sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #9 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #10 namei+0x63c sys/kern/vfs_lookup.c:249 #11 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #12 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #13 Xsyscall+0x128 Process 66392 (sshd) thread 0xffff800020e5e010 (320429) exclusive rwlock netlock r = 0 (0xffffffff82735468) #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 9469 6396K 6657K 78643K 10636 0 pcb 13 8K 8K 78643K 29 0 rtable 83 2K 3K 78643K 249 0 ifaddr 38 9K 11K 78643K 78 0 counters 41 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1475 0 iov 0 0K 12K 78643K 4 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1243 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 10 0K 0K 78643K 20 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 84 0 proc 60 63K 95K 78643K 442 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 1 0 in_multi 22 1K 2K 78643K 41 0 ether_multi 1 0K 0K 78643K 1 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 212 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 114 22K 23K 78643K 1197 0 UVM aobj 3 2K 2K 78643K 6 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 5 0K 0K 78643K 17 0 temp 67 3844K 3909K 78643K 2163 0 kqueue 3 4K 4K 78643K 3 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 19 0 17 1 0 1 1 0 8 0 rtentry 112 49 0 16 2 0 2 2 0 8 0 unpcb 120 53 0 43 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpqe 32 904 0 904 1 0 1 1 0 8 1 tcpcb 544 59 0 55 1 0 1 1 0 8 0 inpcb 280 152 0 145 2 0 2 2 0 8 1 nd6 48 7 0 4 1 0 1 1 0 8 0 pfstscr 40 1 0 0 1 0 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 pfstitem 24 20 0 0 1 0 1 1 0 8 0 pfstkey 112 20 0 0 1 0 1 1 0 8 0 pfstate 328 19 0 0 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 256 212 0 68 13 0 13 13 0 8 2 art_table 32 213 0 68 2 0 2 2 0 8 0 art_node 16 48 0 18 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semupl 112 6 0 6 1 0 1 1 0 8 1 semapl 112 14 0 6 1 0 1 1 0 8 0 shmpl 112 4 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1501 0 94 89 0 89 89 0 8 0 ffsino 272 1501 0 94 95 1 94 94 0 8 0 nchpl 144 1795 0 185 60 0 60 60 0 8 0 uvmvnodes 72 1558 0 0 29 0 29 29 0 8 0 vnodes 208 1558 0 0 82 0 82 82 0 8 0 namei 1024 4755 0 4755 2 1 1 1 0 8 1 percpumem 16 38 0 7 1 0 1 1 0 8 0 scxspl 192 5369 0 5368 8 1 7 7 0 8 6 plimitpl 152 17 0 9 1 0 1 1 0 8 0 sigapl 424 299 0 268 4 0 4 4 0 8 0 futexpl 56 909 0 909 1 0 1 1 0 8 1 knotepl 112 61 0 42 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 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 496 284 0 268 3 0 3 3 0 8 0 filepl 152 1476 0 1375 6 1 5 5 0 8 1 lockfpl 104 24 0 23 1 0 1 1 0 8 0 lockfspl 48 8 0 7 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 87 0 78 1 0 1 1 0 8 0 zombiepl 144 268 0 268 2 1 1 1 0 8 1 processpl 984 299 0 268 6 1 5 5 0 8 1 procpl 624 433 0 393 4 0 4 4 0 8 0 sockpl 400 224 0 205 5 1 4 4 0 8 2 mcl64k 65536 1 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 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 223 0 0 27 0 27 27 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 247 0 0 15 0 15 15 0 8 0 bufpl 280 3490 0 133 240 0 240 240 0 8 0 anonpl 16 41509 0 26213 63 1 62 62 0 124 0 amapchunkpl 152 1293 0 1151 8 0 8 8 0 158 1 amappl16 192 1133 0 313 42 0 42 42 0 8 0 amappl15 184 4 0 3 2 1 1 1 0 8 0 amappl14 176 24 0 20 1 0 1 1 0 8 0 amappl13 168 79 0 74 1 0 1 1 0 8 0 amappl12 160 16 0 14 1 0 1 1 0 8 0 amappl11 152 78 0 62 1 0 1 1 0 8 0 amappl10 144 17 0 12 1 0 1 1 0 8 0 amappl9 136 379 0 378 1 0 1 1 0 8 0 amappl8 128 347 0 313 2 0 2 2 0 8 0 amappl7 120 122 0 109 1 0 1 1 0 8 0 amappl6 112 48 0 45 1 0 1 1 0 8 0 amappl5 104 167 0 152 1 0 1 1 0 8 0 amappl4 96 519 0 490 1 0 1 1 0 8 0 amappl3 88 130 0 122 1 0 1 1 0 8 0 amappl2 80 1307 0 1246 2 0 2 2 0 8 0 amappl1 72 16125 0 15695 22 11 11 18 0 8 0 amappl 80 683 0 642 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 5 0 3 1 0 1 1 0 8 0 uaddrrnd 24 284 0 268 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 284 0 268 1 0 1 1 0 8 0 vmmpekpl 168 6251 0 6218 2 0 2 2 0 8 0 vmmpepl 168 41877 0 39934 119 7 112 112 0 357 23 vmsppl 368 283 0 268 2 0 2 2 0 8 0 pdppl 4096 575 0 536 7 1 6 6 0 8 1 pvpl 32 144924 0 126574 154 0 154 154 0 265 4 pmappl 232 283 0 268 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 272 0 7 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: 0x7f7ffffd6180, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d80ff0) 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(3f8,0,65) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,65) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,65) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(65) at cnputc+0x4c sys/dev/cons.c:239 kputchar(65,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 panic(ffffffff823e928b) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff823e928b) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff82909988) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82909988) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82909988,2) 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(ffff800000ad6880) at tcp_output+0x14e6 tcp_usrreq(fffffd806ead9968,9,fffffd806f2bea00,0,0,ffff800020e5e010) at tcp_usrreq+0xa55 end trace frame: 0xffff800020e19550, count: 0 ddb{1}> trace x86_ipi_db(ffff800020d80ff0) 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(3f8,0,65) at x86_bus_space_io_write_1+0x45 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,65) at comcnputc+0x131 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,65) at comcnputc+0x131 sys/dev/ic/com.c:1254 cnputc(65) at cnputc+0x4c sys/dev/cons.c:239 kputchar(65,5,0) at kputchar+0x219 sys/kern/subr_prf.c:343 kprintf() at kprintf+0x15c sys/kern/subr_prf.c:700 panic(ffffffff823e928b) at panic+0xf3 vprintf sys/kern/subr_prf.c:528 [inline] panic(ffffffff823e928b) at panic+0xf3 sys/kern/subr_prf.c:197 pool_cache_get(ffffffff82909988) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1781 [inline] pool_cache_get(ffffffff82909988) at pool_cache_get+0x323 sys/kern/subr_pool.c:1884 pool_get(ffffffff82909988,2) 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(ffff800000ad6880) at tcp_output+0x14e6 tcp_usrreq(fffffd806ead9968,9,fffffd806f2bea00,0,0,ffff800020e5e010) at tcp_usrreq+0xa55 sosend(fffffd806ead9968,0,ffff800020e19618,0,0,80) at sosend+0x671 sys/kern/uipc_socket.c:549 dofilewritev(ffff800020e5e010,4,ffff800020e19618,0,ffff800020e19700) at dofilewritev+0x1b6 sys/kern/sys_generic.c:365 sys_write(ffff800020e5e010,ffff800020e196b0,ffff800020e19700) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff800020e19780) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e19780) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc8c30, count: -19