panic: pool_do_get: mbufpl free list modified: page 0xfffffd806d4b0000; item addr 0xfffffd806d4b0f00; offset 0x0=0x265e3ae227570000 != 0x265e3ae22757fbbd Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 135495 20276 0 0 0 1 syz-executor.1 *367493 58732 0 0x14000 0x200 0 softnet db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff824994f0) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff828f8c38,2,ffff800020da8fa8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828f8c38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ad7ee0) at tcp_output+0x14e6 tcp_input(ffff800020da9528,ffff800020da9534,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da9528,ffff800020da9534,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da9528,ffff800020da9534,ffff800020d884e0,0) at ip_ours+0x412 ip_input_if(ffff800020da9528,ffff800020da9534,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd80688bc100) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da95c8) at if_input_process+0xda sys/net/if.c:832 ifiq_process(ffff80000017c6a8) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: 1 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_do_get: mbufpl free list modified: page 0xfffffd806d4b0000; item addr 0xfffffd806d4b0f00; offset 0x0=0x265e3ae227570000 != 0x265e3ae22757fbbd ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff824994f0) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff828f8c38,2,ffff800020da8fa8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828f8c38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ad7ee0) at tcp_output+0x14e6 tcp_input(ffff800020da9528,ffff800020da9534,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da9528,ffff800020da9534,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da9528,ffff800020da9534,ffff800020d884e0,0) at ip_ours+0x412 ip_input_if(ffff800020da9528,ffff800020da9534,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd80688bc100) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da95c8) at if_input_process+0xda sys/net/if.c:832 ifiq_process(ffff80000017c6a8) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -14 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020da8df0 rbx 0xffff800020da8ea0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff822ff92f kprintf+0x16f r9 0x1 r10 0x2 r11 0xaae48355ec1cc02 r12 0x3000000008 r13 0xffff800020da8e00 r14 0x100 r15 0x1 rip 0xffffffff81f09538 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da8de0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (softnet) pid=367493 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d88270,0xffff800020d889d0 process=0xffff800020d8a3e0 user=0xffff800020da4000, vmspace=0xffffffff828ea190 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20276 135495 81225 0 7 0 syz-executor.1 20276 48385 81225 0 2 0x4000080 syz-executor.1 36775 520325 0 0 3 0x14200 acct acct 29329 101972 0 0 3 0x14200 bored sosplice 81225 321867 20290 0 3 0x82 nanosleep syz-executor.1 49539 208654 20290 0 3 0x2 biowait syz-executor.0 20290 270918 32113 0 3 0x82 thrsleep syz-fuzzer 20290 501282 32113 0 3 0x4000082 nanosleep syz-fuzzer 20290 33614 32113 0 3 0x4000082 thrsleep syz-fuzzer 20290 349932 32113 0 3 0x4000082 thrsleep syz-fuzzer 20290 488254 32113 0 3 0x4000082 thrsleep syz-fuzzer 20290 417755 32113 0 3 0x4000082 thrsleep syz-fuzzer 20290 445307 32113 0 3 0x4000082 thrsleep syz-fuzzer 20290 324556 32113 0 3 0x4000082 thrsleep syz-fuzzer 20290 303791 32113 0 3 0x4000082 nanosleep syz-fuzzer 20290 174493 32113 0 3 0x4000082 kqread syz-fuzzer 32113 517355 48979 0 3 0x10008a pause ksh 48979 243181 76423 0 3 0x92 select sshd 51604 309458 1 0 3 0x100083 ttyin getty 76423 208211 1 0 3 0x80 select sshd 12454 207363 142 74 3 0x100092 bpf pflogd 142 500193 1 0 3 0x80 netio pflogd 46480 226814 37672 73 3 0x100090 kqread syslogd 37672 312205 1 0 3 0x100082 netio syslogd 64513 377419 1 77 3 0x100090 poll dhclient 11206 445949 1 0 3 0x80 poll dhclient 63983 276017 0 0 3 0x14200 bored smr 9401 93679 0 0 2 0x14200 zerothread 92006 339112 0 0 3 0x14200 aiodoned aiodoned 85660 362320 0 0 3 0x14200 syncer update 28937 153182 0 0 3 0x14200 cleaner cleaner 62922 14658 0 0 3 0x14200 reaper reaper 51996 508835 0 0 3 0x14200 pgdaemon pagedaemon 4866 123363 0 0 3 0x14200 bored crynlk 57192 23283 0 0 3 0x14200 bored crypto 47761 213820 0 0 3 0x40014200 acpi0 acpi0 33509 114065 0 0 3 0x40014200 idle1 *58732 367493 0 0 7 0x14200 softnet 60059 152064 0 0 3 0x14200 bored systqmp 18556 239292 0 0 3 0x14200 bored systq 28922 297631 0 0 3 0x40014200 bored softclock 57913 356857 0 0 3 0x40014200 idle0 1 356302 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex mbufpl r = 0 (0xffffffff828f8c48) #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_gethdr+0x4c sys/kern/uipc_mbuf.c:283 #5 tcp_output+0x14e6 #6 tcp_input+0x2356 #7 ip_deliver+0x353 sys/netinet/ip_input.c:668 #8 ip_ours+0x412 #9 ip_input_if+0x6ce #10 ipv4_input+0x48 sys/netinet/ip_input.c:215 #11 if_input_process+0xda sys/net/if.c:832 #12 ifiq_process+0x80 sys/net/ifq.c:768 #13 taskq_thread+0xec sys/kern/kern_task.c:437 #14 proc_trampoline+0x1c Process 49539 (syz-executor.0) thread 0xffff800020ddd118 (208654) exclusive rrwlock inode r = 0 (0xfffffd80640f9a30) #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 (0xfffffd80640f9b40) #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 58732 (softnet) thread 0xffff800020d884e0 (367493) exclusive rwlock netlock r = 0 (0xffffffff82726938) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_input_process+0xa1 sys/net/if.c:832 #2 ifiq_process+0x80 sys/net/ifq.c:768 #3 taskq_thread+0xec sys/kern/kern_task.c:437 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:436 #2 proc_trampoline+0x1c exclusive mutex mbufpl r = 0 (0xffffffff828f8c48) #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_gethdr+0x4c sys/kern/uipc_mbuf.c:283 #5 tcp_output+0x14e6 #6 tcp_input+0x2356 #7 ip_deliver+0x353 sys/netinet/ip_input.c:668 #8 ip_ours+0x412 #9 ip_input_if+0x6ce #10 ipv4_input+0x48 sys/netinet/ip_input.c:215 #11 if_input_process+0xda sys/net/if.c:832 #12 ifiq_process+0x80 sys/net/ifq.c:768 #13 taskq_thread+0xec sys/kern/kern_task.c:437 #14 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9512 6546K 6662K 78643K 10948 0 pcb 13 8K 8K 78643K 65 0 rtable 116 6K 7K 78643K 308 0 ifaddr 76 16K 16K 78643K 126 0 counters 43 33K 34K 78643K 55 0 ioctlops 0 0K 4K 78643K 1516 0 iov 0 0K 16K 78643K 35 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1342 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 0K 78643K 72 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 395 0 sigio 0 0K 0K 78643K 6 0 proc 61 63K 95K 78643K 485 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 30 0 in_multi 65 3K 3K 78643K 123 0 ether_multi 1 0K 0K 78643K 6 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 249 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 129 55K 56K 78643K 2215 0 UVM aobj 26 4K 4K 78643K 27 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 33 0 NDP 10 0K 0K 78643K 27 0 temp 117 3869K 3933K 78643K 7333 0 kqueue 3 4K 18K 78643K 23 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 31 0 29 1 0 1 1 0 8 0 rtentry 112 60 0 16 2 0 2 2 0 8 0 unpcb 120 988 0 978 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 76 0 76 1 1 0 1 0 8 0 tcpcb 544 75 0 69 1 0 1 1 0 8 0 inpcb 296 318 0 311 6 5 1 2 0 8 0 nd6 48 17 0 11 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 3 0 1 0 8 0 pfstscr 40 2 0 2 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 12 0 7 1 0 1 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 24 0 22 1 0 1 1 0 8 0 pfstkey 112 26 0 24 1 0 1 1 0 8 0 pfstate 328 25 0 23 2 1 1 2 0 8 0 pfrule 1360 28 0 19 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 59 0 19 1 0 1 1 0 8 0 sysvmsgpl 40 27 0 17 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 70 0 60 1 0 1 1 0 8 0 shmpl 112 24 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1911 0 503 89 0 89 89 0 8 0 ffsino 272 1911 0 503 95 0 95 95 0 8 0 nchpl 144 2768 0 1157 60 0 60 60 0 8 0 uvmvnodes 72 2033 0 0 37 0 37 37 0 8 0 vnodes 208 2033 0 0 107 0 107 107 0 8 0 namei 1024 7725 0 7725 10 9 1 1 0 8 1 percpumem 16 38 0 6 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 2 1 0 1 1 0 8 0 scsiplug 64 3 0 3 2 2 0 1 0 8 0 scxspl 192 7778 0 7777 12 9 3 7 0 8 2 plimitpl 152 33 0 25 1 0 1 1 0 8 0 sigapl 424 612 0 579 4 0 4 4 0 8 0 futexpl 56 5114 0 5114 10 9 1 1 0 8 1 knotepl 112 80 0 61 1 0 1 1 0 8 0 kqueuepl 144 37 0 35 1 0 1 1 0 8 0 pipepl 304 120 0 110 2 1 1 2 0 8 0 fdescpl 496 595 0 579 3 0 3 3 0 8 0 filepl 152 3754 0 3653 6 1 5 5 0 8 1 lockfpl 104 82 0 81 1 0 1 1 0 8 0 lockfspl 48 27 0 26 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 443 0 434 1 0 1 1 0 8 0 zombiepl 144 579 0 579 2 1 1 1 0 8 1 processpl 992 612 0 579 6 1 5 5 0 8 0 procpl 624 1436 0 1393 4 0 4 4 0 8 0 sosppl 128 3 0 3 2 2 0 1 0 8 0 sockpl 400 1343 0 1324 12 9 3 4 0 8 1 mcl64k 65536 19 0 0 3 1 2 3 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 176 0 0 21 0 21 21 0 8 0 mtagpl 96 29 0 0 1 0 1 1 0 8 0 mbufpl 256 275 0 0 13 0 13 13 0 8 0 mbufpl: pool(0xffffffff828f8c38:mbufpl): free list modified: page 0xfffffd8069e96000; item ordinal 2; addr 0xfffffd8069e96b00 (p 0xfffffd8078a53000); offset 0x0=0x4485d96e58d0000 mbufpl: pool(0xffffffff828f8c38:mbufpl): free list modified: page 0xfffffd806d4b0000; item ordinal 0; addr 0xfffffd806d4b0f00 (p 0xfffffd8078a53000); offset 0x0=0x265e3ae227570000 bufpl 280 4019 0 133 278 0 278 278 0 8 0 anonpl 16 71558 0 54111 80 4 76 79 0 124 4 amapchunkpl 152 3271 0 3104 14 5 9 12 0 158 2 amappl16 192 2224 0 1295 49 1 48 48 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 385 0 377 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 13 0 12 1 0 1 1 0 8 0 amappl11 152 418 0 399 1 0 1 1 0 8 0 amappl10 144 19 0 13 1 0 1 1 0 8 0 amappl9 136 375 0 374 1 0 1 1 0 8 0 amappl8 128 337 0 310 1 0 1 1 0 8 0 amappl7 120 119 0 107 1 0 1 1 0 8 0 amappl6 112 26 0 21 1 0 1 1 0 8 0 amappl5 104 189 0 174 1 0 1 1 0 8 0 amappl4 96 854 0 822 1 0 1 1 0 8 0 amappl3 88 478 0 469 1 0 1 1 0 8 0 amappl2 80 3810 0 3739 2 0 2 2 0 8 0 amappl1 72 26525 0 26077 26 17 9 18 0 8 0 amappl 80 1689 0 1640 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 26 0 1 1 0 1 1 0 8 0 uaddrrnd 24 599 0 579 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 599 0 579 1 0 1 1 0 8 0 vmmpekpl 168 8660 0 8624 2 0 2 2 0 8 0 vmmpepl 168 82960 0 80846 139 40 99 121 0 357 3 vmsppl 368 598 0 579 2 0 2 2 0 8 0 pdppl 4096 1205 0 1162 7 1 6 6 0 8 0 pvpl 32 227466 0 206846 203 17 186 193 0 265 16 pmappl 232 598 0 579 4 2 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 280 0 23 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff824994f0) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff828f8c38,2,ffff800020da8fa8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff828f8c38,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283 tcp_output(ffff800000ad7ee0) at tcp_output+0x14e6 tcp_input(ffff800020da9528,ffff800020da9534,6,2) at tcp_input+0x2356 ip_deliver(ffff800020da9528,ffff800020da9534,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip_ours(ffff800020da9528,ffff800020da9534,ffff800020d884e0,0) at ip_ours+0x412 ip_input_if(ffff800020da9528,ffff800020da9534,4,0,ffff80000017c2a8) at ip_input_if+0x6ce ipv4_input(ffff80000017c2a8,fffffd80688bc100) at ipv4_input+0x48 sys/netinet/ip_input.c:215 if_input_process(ffff80000017c2a8,ffff800020da95c8) at if_input_process+0xda sys/net/if.c:832 ifiq_process(ffff80000017c6a8) at ifiq_process+0x80 sys/net/ifq.c:768 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -14 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 __sanitizer_cov_trace_switch(2,ffffffff8275bd90) at __sanitizer_cov_trace_switch+0x146 sys/dev/kcov.c:202 syscall(ffff800020ed2d20) at syscall+0x19c sys/arch/amd64/amd64/trap.c:542 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2fa0, count: 9 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 __sanitizer_cov_trace_switch(2,ffffffff8275bd90) at __sanitizer_cov_trace_switch+0x146 sys/dev/kcov.c:202 syscall(ffff800020ed2d20) at syscall+0x19c sys/arch/amd64/amd64/trap.c:542 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2fa0, count: -6