panic: pool_do_get: mbufpl free list modified: page 0xfffffd806d81a000; item addr 0xfffffd806d81a800; offset 0x0=0x0 != 0xe66f2d1041d7cb9a Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 250838 54081 0 0x10 0 1 syz-executor.1 *450766 54081 0 0x10 0x4000000 0 syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8249d33b) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff82915ab0,2,ffff800022925cf8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82915ab0,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd806b8bf500,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806b8bf500,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 ether_resolve(ffff80000017c2a8,fffffd806b8bf500,fffffd806f68b770,fffffd806f389380,ffff800022925e98) at ether_resolve+0x49f sys/net/if_ethersubr.c:238 ether_output(ffff80000017c2a8,fffffd806b8bf500,fffffd806f68b770,fffffd806f389380) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline] ether_output(ffff80000017c2a8,fffffd806b8bf500,fffffd806f68b770,fffffd806f389380) at ether_output+0x47 sys/net/if_ethersubr.c:350 ip_output(fffffd806d81ad00,0,fffffd806f68b760,0,0,fffffd806f68b6f0) at ip_output+0x12a2 sys/netinet/ip_output.c:509 udp_output(fffffd806f68b6f0,fffffd806d81ad00,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1017 sosend(fffffd80642537e8,0,ffff8000229261c0,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020e09768,8,ffff8000229262a0,0,ffff800022926380) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020e09768,ffff800022926338,ffff800022926380) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff800022926400) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022926400) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c2f54c13f0, 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 0xfffffd806d81a000; item addr 0xfffffd806d81a800; offset 0x0=0x0 != 0xe66f2d1041d7cb9a ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8249d33b) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff82915ab0,2,ffff800022925cf8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82915ab0,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd806b8bf500,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806b8bf500,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 ether_resolve(ffff80000017c2a8,fffffd806b8bf500,fffffd806f68b770,fffffd806f389380,ffff800022925e98) at ether_resolve+0x49f sys/net/if_ethersubr.c:238 ether_output(ffff80000017c2a8,fffffd806b8bf500,fffffd806f68b770,fffffd806f389380) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline] ether_output(ffff80000017c2a8,fffffd806b8bf500,fffffd806f68b770,fffffd806f389380) at ether_output+0x47 sys/net/if_ethersubr.c:350 ip_output(fffffd806d81ad00,0,fffffd806f68b760,0,0,fffffd806f68b6f0) at ip_output+0x12a2 sys/netinet/ip_output.c:509 udp_output(fffffd806f68b6f0,fffffd806d81ad00,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1017 sosend(fffffd80642537e8,0,ffff8000229261c0,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020e09768,8,ffff8000229262a0,0,ffff800022926380) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020e09768,ffff800022926338,ffff800022926380) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff800022926400) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022926400) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c2f54c13f0, count: -14 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800022925b40 rbx 0xffff800022925bf0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8210369f kprintf+0x16f r9 0x1 r10 0x2 r11 0x3ea47761f28615ab r12 0x3000000008 r13 0xffff800022925b50 r14 0x100 r15 0x1 rip 0xffffffff81785548 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022925b30 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=450766 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e09c48,0xffffffff82914340 process=0xffff800020eb6020 user=0xffff800022921000, vmspace=0xfffffd807efff8a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54081 250838 82124 0 7 0x10 syz-executor.1 *54081 450766 82124 0 7 0x4000010 syz-executor.1 49445 513172 0 0 3 0x14200 bored sosplice 82124 291067 1324 0 3 0x82 nanosleep syz-executor.1 67921 290111 1324 0 3 0x82 nanosleep syz-executor.0 1324 418408 33743 0 3 0x82 thrsleep syz-fuzzer 1324 248620 33743 0 3 0x4000082 thrsleep syz-fuzzer 1324 407484 33743 0 3 0x4000082 thrsleep syz-fuzzer 1324 276454 33743 0 3 0x4000082 thrsleep syz-fuzzer 1324 124012 33743 0 3 0x4000082 kqread syz-fuzzer 1324 77007 33743 0 3 0x4000082 thrsleep syz-fuzzer 1324 262242 33743 0 3 0x4000082 thrsleep syz-fuzzer 1324 70448 33743 0 3 0x4000082 thrsleep syz-fuzzer 33743 461772 2253 0 3 0x10008a pause ksh 2253 379237 93274 0 3 0x92 select sshd 32968 474106 1 0 3 0x100083 ttyin getty 93274 399244 1 0 3 0x80 select sshd 91195 306142 220 74 3 0x100092 bpf pflogd 220 145834 1 0 3 0x80 netio pflogd 57761 131582 6459 73 3 0x100090 kqread syslogd 6459 158602 1 0 3 0x100082 netio syslogd 65913 412004 1 77 3 0x100090 poll dhclient 40923 320602 1 0 3 0x80 poll dhclient 98392 398151 0 0 3 0x14200 bored smr 9146 257051 0 0 2 0x14200 zerothread 91365 381256 0 0 3 0x14200 aiodoned aiodoned 22070 353161 0 0 3 0x14200 syncer update 54296 257510 0 0 3 0x14200 cleaner cleaner 87609 197050 0 0 3 0x14200 reaper reaper 24900 474045 0 0 3 0x14200 pgdaemon pagedaemon 51034 143038 0 0 3 0x14200 bored crynlk 32539 347243 0 0 3 0x14200 bored crypto 70 513758 0 0 3 0x40014200 acpi0 acpi0 24723 499735 0 0 3 0x40014200 idle1 98860 281778 0 0 2 0x14200 softnet 77505 24311 0 0 3 0x14200 bored systqmp 55697 201286 0 0 3 0x14200 bored systq 7373 465158 0 0 3 0x40014200 bored softclock 37978 482817 0 0 3 0x40014200 idle0 1 502948 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 (0xffffffff82915ac0) #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_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] #4 m_copym+0x174 sys/kern/uipc_mbuf.c:667 #5 ether_resolve+0x49f sys/net/if_ethersubr.c:238 #6 ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline] #6 ether_output+0x47 sys/net/if_ethersubr.c:350 #7 ip_output+0x12a2 sys/netinet/ip_output.c:509 #8 udp_output+0x5af sys/netinet/udp_usrreq.c:1017 #9 sosend+0x671 sys/kern/uipc_socket.c:555 #10 sendit+0x52b sys/kern/uipc_syscalls.c:657 #11 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #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 54081 (syz-executor.1) thread 0xffff800020e09768 (450766) exclusive rwlock netlock r = 0 (0xffffffff827410f8) #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 sendit+0x52b sys/kern/uipc_syscalls.c:657 #4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #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 exclusive mutex mbufpl r = 0 (0xffffffff82915ac0) #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_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] #4 m_copym+0x174 sys/kern/uipc_mbuf.c:667 #5 ether_resolve+0x49f sys/net/if_ethersubr.c:238 #6 ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline] #6 ether_output+0x47 sys/net/if_ethersubr.c:350 #7 ip_output+0x12a2 sys/netinet/ip_output.c:509 #8 udp_output+0x5af sys/netinet/udp_usrreq.c:1017 #9 sosend+0x671 sys/kern/uipc_socket.c:555 #10 sendit+0x52b sys/kern/uipc_syscalls.c:657 #11 sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9490 6467K 6984K 78643K 11105 0 pcb 13 8K 8K 78643K 27 0 rtable 106 3K 7K 78643K 321 0 ifaddr 59 13K 14K 78643K 112 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 1497 0 iov 0 0K 16K 78643K 17 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1355 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 23 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 199 0 sigio 0 0K 0K 78643K 2 0 proc 62 63K 83K 78643K 463 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 3 0 in_multi 53 3K 3K 78643K 66 0 ether_multi 1 0K 0K 78643K 3 0 mrt 0 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 157 25K 41K 78643K 1616 0 UVM aobj 16 4K 4K 78643K 16 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 6 0 NDP 8 0K 0K 78643K 16 0 temp 105 3863K 3927K 78643K 4133 0 kqueue 3 4K 22K 78643K 62 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 43 0 41 1 0 1 1 0 8 0 rtentry 112 48 0 4 2 0 2 2 0 8 0 unpcb 120 171 0 158 1 0 1 1 0 8 0 syncache 264 6 0 6 3 3 0 1 0 8 0 tcpqe 32 175 0 175 1 1 0 1 0 8 0 tcpcb 544 66 0 48 2 0 2 2 0 8 0 inpcb 296 192 0 184 3 1 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 8 0 2 1 0 1 1 0 8 0 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 31 0 1 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 pfrktable 1344 36 0 36 2 1 1 1 0 8 1 pfstitem 24 24 0 3 1 0 1 1 0 8 0 pfstkey 112 24 0 3 1 0 1 1 0 8 0 pfstate 328 24 0 3 2 0 2 2 0 8 0 pfrule 1360 25 0 21 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 47 0 7 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 19 0 9 1 0 1 1 0 8 0 shmpl 112 13 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1645 0 242 89 0 89 89 0 8 0 ffsino 272 1645 0 242 94 0 94 94 0 8 0 nchpl 144 2177 0 566 61 0 61 61 0 8 1 uvmvnodes 72 1806 0 0 33 0 33 33 0 8 0 vnodes 208 1806 0 0 96 0 96 96 0 8 0 namei 1024 5796 0 5796 2 1 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 vmpool 560 1 0 1 1 1 0 1 0 8 0 pfiaddrpl 120 10 0 10 2 1 1 1 0 8 1 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 6442 0 6442 11 8 3 7 0 8 3 plimitpl 152 31 0 23 1 0 1 1 0 8 0 sigapl 424 415 0 383 4 0 4 4 0 8 0 futexpl 56 2730 0 2730 2 1 1 1 0 8 1 knotepl 112 192 0 172 2 0 2 2 0 8 1 kqueuepl 144 96 0 94 1 0 1 1 0 8 0 pipepl 304 103 0 92 3 1 2 2 0 8 1 fdescpl 496 399 0 383 3 0 3 3 0 8 0 filepl 152 2292 0 2186 6 1 5 5 0 8 0 lockfpl 104 36 0 35 1 0 1 1 0 8 0 lockfspl 48 14 0 13 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 96 167 0 157 1 0 1 1 0 8 0 zombiepl 144 383 0 382 1 0 1 1 0 8 0 processpl 992 415 0 382 5 0 5 5 0 8 0 procpl 624 783 0 742 4 0 4 4 0 8 0 sosppl 128 5 0 5 1 0 1 1 0 8 1 sockpl 400 406 0 383 5 1 4 4 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k 2048 179 0 0 22 0 22 22 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 224 0 0 13 0 13 13 0 8 0 mbufpl: pool(0xffffffff82915ab0:mbufpl): free list modified: page 0xfffffd806d81a000; item ordinal 0; addr 0xfffffd806d81a800 (p 0xfffffd806db2b000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd806d81a000; item ordinal 0; addr 0xfffffd806d81a800 (p 0xfffffd806db2b000); offset 0x0=0x0 mbufpl: pool(0xffffffff82915ab0:mbufpl): page inconsistency: page 0xfffffd806d81a000; item ordinal 1; addr 0x6b4d1758f8f1bbcb bufpl 280 3797 0 133 262 0 262 262 0 8 0 anonpl 16 61713 0 43472 107 17 90 90 0 124 15 amapchunkpl 152 2638 0 2318 28 14 14 27 0 158 0 amappl16 192 2169 0 1341 66 16 50 54 0 8 8 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 36 0 30 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 6 0 4 2 1 1 1 0 8 0 amappl11 152 61 0 45 1 0 1 1 0 8 0 amappl10 144 21 0 18 1 0 1 1 0 8 0 amappl9 136 532 0 528 1 0 1 1 0 8 0 amappl8 128 503 0 470 2 0 2 2 0 8 0 amappl7 120 121 0 106 1 0 1 1 0 8 0 amappl6 112 23 0 20 1 0 1 1 0 8 0 amappl5 104 297 0 281 1 0 1 1 0 8 0 amappl4 96 489 0 461 1 0 1 1 0 8 0 amappl3 88 115 0 108 1 0 1 1 0 8 0 amappl2 80 2256 0 2188 2 0 2 2 0 8 0 amappl1 72 20518 0 20063 23 13 10 18 0 8 0 amappl 80 1101 0 1014 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 15 0 0 1 0 1 1 0 8 0 uaddrrnd 24 400 0 384 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 400 0 384 1 0 1 1 0 8 0 vmmpekpl 168 7089 0 7055 2 0 2 2 0 8 0 vmmpepl 168 58017 0 55976 160 56 104 145 0 357 10 vmsppl 368 399 0 384 2 0 2 2 0 8 0 pdppl 4096 807 0 768 6 0 6 6 0 8 0 pvpl 32 190840 0 169427 246 37 209 209 0 265 35 pmappl 232 399 0 384 3 2 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 263 0 5 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(ffffffff8249d33b) at panic+0x164 sys/kern/subr_prf.c:218 pool_do_get(ffffffff82915ab0,2,ffff800022925cf8) at pool_do_get+0x439 sys/kern/subr_pool.c:738 pool_get(ffffffff82915ab0,2) at pool_get+0xeb sys/kern/subr_pool.c:581 m_copym(fffffd806b8bf500,0,3b9aca00,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806b8bf500,0,3b9aca00,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 ether_resolve(ffff80000017c2a8,fffffd806b8bf500,fffffd806f68b770,fffffd806f389380,ffff800022925e98) at ether_resolve+0x49f sys/net/if_ethersubr.c:238 ether_output(ffff80000017c2a8,fffffd806b8bf500,fffffd806f68b770,fffffd806f389380) at ether_output+0x47 ether_encap sys/net/if_ethersubr.c:321 [inline] ether_output(ffff80000017c2a8,fffffd806b8bf500,fffffd806f68b770,fffffd806f389380) at ether_output+0x47 sys/net/if_ethersubr.c:350 ip_output(fffffd806d81ad00,0,fffffd806f68b760,0,0,fffffd806f68b6f0) at ip_output+0x12a2 sys/netinet/ip_output.c:509 udp_output(fffffd806f68b6f0,fffffd806d81ad00,0,0) at udp_output+0x5af sys/netinet/udp_usrreq.c:1017 sosend(fffffd80642537e8,0,ffff8000229261c0,0,0,0) at sosend+0x671 sys/kern/uipc_socket.c:555 sendit(ffff800020e09768,8,ffff8000229262a0,0,ffff800022926380) at sendit+0x52b sys/kern/uipc_syscalls.c:657 sys_sendto(ffff800020e09768,ffff800022926338,ffff800022926380) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:522 syscall(ffff800022926400) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022926400) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2c2f54c13f0, 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_cmp4(ffff800020efa8a8,ffff800020efa8a8) at __sanitizer_cov_trace_cmp4+0x67 sys/dev/kcov.c:137 clock_gettime(ffff800020e09c48,0,ffff800020efa8a8) at clock_gettime+0x9d sys/kern/kern_time.c:116 sys_clock_gettime(ffff800020e09c48,ffff800020efa910,ffff800020efa960) at sys_clock_gettime+0x4c sys/kern/kern_time.c:165 syscall(ffff800020efa9e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020efa9e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcecd0, count: 7 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_cmp4(ffff800020efa8a8,ffff800020efa8a8) at __sanitizer_cov_trace_cmp4+0x67 sys/dev/kcov.c:137 clock_gettime(ffff800020e09c48,0,ffff800020efa8a8) at clock_gettime+0x9d sys/kern/kern_time.c:116 sys_clock_gettime(ffff800020e09c48,ffff800020efa910,ffff800020efa960) at sys_clock_gettime+0x4c sys/kern/kern_time.c:165 syscall(ffff800020efa9e0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020efa9e0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcecd0, count: -8