kernel: protection fault trap, code=0 Stopped at icmp_mtudisc_timeout+0x111: movq 0(%rax),%rcx ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace icmp_mtudisc_timeout(fffffd8070e8bdd0,0) at icmp_mtudisc_timeout+0x111 sys/netinet/ip_icmp.c:1102 rt_timer_queue_flush(ffffffff839dc290) at rt_timer_queue_flush+0x281 sys/net/route.c:1586 ip_sysctl(ffff80003c9c110c,1,0,ffff80003c9c1138,200000001300,4) at ip_sysctl+0x845 sys/netinet/ip_input.c:1753 net_sysctl(ffff80003c9c1104,3,0,ffff80003c9c1138,200000001300,4,ea0cb13beac7938) at net_sysctl+0x64e sys/kern/uipc_domain.c:260 sys_sysctl(ffff80002a7d07c8,ffff80003c9c1270,ffff80003c9c11c0) at sys_sysctl+0x3f2 sys/kern/kern_sysctl.c:-1 syscall(ffff80003c9c1270) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9c1270) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x90c90e6c7c0, count: -7 ddb> show registers rdi 0x14 rsi 0x14 rbp 0xffff80003c9c0f40 rbx 0x3 rdx 0xffff800001469240 rcx 0x131e __ALIGN_SIZE+0x31e rax 0xb553a37eb2f9e08b r8 0x1 r9 0 r10 0x9c64d2c799c6dee9 r11 0x650d59bb074af40e r12 0xffff800000039058 r13 0x14 r14 0 r15 0xfffffd8070e8bdd0 rip 0xffffffff831e9d11 icmp_mtudisc_timeout+0x111 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9c0ef0 ss 0x10 icmp_mtudisc_timeout+0x111: movq 0(%rax),%rcx ddb> show proc PROC (syz-executor) tid=495787 pid=24902 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7d1498,0xffff80002a7d0548 process=0xffff80002a89e920 user=0xffff80003c9bc000, vmspace=0xfffffd806baaad00 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 74539 185453 95215 0 2 0 syz-executor 74539 332817 95215 0 3 0x4000080 fsleep syz-executor 24902 202426 89598 0 2 0 syz-executor *24902 495787 89598 0 7 0x4000000 syz-executor 10580 286296 64417 0 3 0x80 nanoslp syz-executor 10580 495078 64417 0 3 0x4000080 netcon syz-executor 10580 397920 64417 0 3 0x4000080 fsleep syz-executor 36795 102541 61486 0 3 0x80 nanoslp syz-executor 36795 311887 61486 0 3 0x4000080 netcon syz-executor 36795 108792 61486 0 3 0x4000080 netacc syz-executor 36795 429498 61486 0 3 0x4000080 fsleep syz-executor 57951 422729 0 0 3 0x14200 acct acct 75457 93152 0 0 3 0x14280 nfsidl nfsio 87783 250610 0 0 3 0x14280 nfsidl nfsio 27363 127164 0 0 3 0x14280 nfsidl nfsio 30459 329579 0 0 3 0x14280 nfsidl nfsio 92807 370403 0 0 3 0x14280 nfsidl nfsio 70646 382911 0 0 3 0x14280 nfsidl nfsio 66139 11109 0 0 3 0x14280 nfsidl nfsio 34498 227429 0 0 3 0x14280 nfsidl nfsio 52309 420717 0 0 3 0x14280 nfsidl nfsio 92059 238015 0 0 3 0x14280 nfsidl nfsio 74430 64034 0 0 3 0x14280 nfsidl nfsio 6458 142303 0 0 3 0x14280 nfsidl nfsio 116 368257 0 0 3 0x14280 nfsidl nfsio 80128 453823 0 0 3 0x14280 nfsidl nfsio 60193 408782 0 0 3 0x14280 nfsidl nfsio 42255 242125 0 0 3 0x14280 nfsidl nfsio 94904 6587 0 0 3 0x14280 nfsidl nfsio 87182 182337 0 0 3 0x14280 nfsidl nfsio 87905 368672 0 0 3 0x14280 nfsidl nfsio 13461 453088 0 0 3 0x14280 nfsidl nfsio 22074 321297 46001 0 2 0x2 syz-executor 61486 152832 46001 0 3 0x82 nanoslp syz-executor 95215 3214 46001 0 3 0x82 nanoslp syz-executor 6320 517791 46001 0 2 0x2 syz-executor 15382 212081 0 0 3 0x14200 bored sosplice 59342 378707 46001 0 2 0x2 syz-executor 64417 503932 46001 0 3 0x82 nanoslp syz-executor 89598 119656 46001 0 3 0x82 nanoslp syz-executor 84914 199022 46001 0 3 0x2 biowait syz-executor 46001 422296 29752 0 3 0x82 kqread syz-executor 29752 299710 24106 0 3 0x10008a sigsusp ksh 24106 316685 33702 0 3 0x98 kqread sshd-session 33702 23314 11812 0 3 0x92 kqread sshd-session 51762 218543 1 0 3 0x100083 ttyopn getty 11812 293185 1 0 3 0x88 kqread sshd 53137 484329 77862 73 3 0x1100090 kqread syslogd 77862 71529 1 0 3 0x100082 sbwait syslogd 55882 458622 1 0 3 0x100080 kqread resolvd 8725 373146 62198 77 3 0x100092 kqread dhcpleased 77510 119240 62198 77 3 0x100092 kqread dhcpleased 62198 51560 1 0 3 0x80 kqread dhcpleased 17560 54046 0 0 3 0x14200 bored smr 31083 424232 0 0 2 0x14200 zerothread 28217 463878 0 0 3 0x14200 aiodoned aiodoned 98965 372390 0 0 3 0x14200 syncer update 10910 251127 0 0 3 0x14200 cleaner cleaner 15987 415800 0 0 3 0x14200 reaper reaper 27839 483480 0 0 3 0x14200 pgdaemon pagedaemon 4156 471631 0 0 3 0x14200 bored viomb 37363 457713 0 0 3 0x40014200 acpi0 acpi0 83553 293764 0 0 3 0x14200 bored softnet7 24711 499890 0 0 3 0x14200 bored softnet6 45433 500266 0 0 3 0x14200 bored softnet5 96653 307398 0 0 3 0x14200 bored softnet4 76795 328246 0 0 3 0x14200 bored softnet3 22620 516342 0 0 3 0x14200 bored softnet2 18349 382238 0 0 3 0x14200 bored softnet1 51920 344118 0 0 3 0x14200 bored softnet0 62087 320944 0 0 2 0x14200 systqmp 90816 200253 0 0 3 0x14200 bored systq 69463 144858 0 0 3 0x40014200 tmoslp softclock 85948 44403 0 0 3 0x40014200 idle0 1 444082 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10206 11099K 11721K 166960K 15447 0 pcb 17 12K 12K 166960K 458 0 rtable 205 14K 15K 166960K 761 0 pf 28 12K 17K 166960K 340 0 ifaddr 32 7K 10K 166960K 237 0 ifgroup 45 2K 2K 166960K 425 0 sysctl 4 1K 9K 166960K 20 0 counters 30 17K 18K 166960K 268 0 ioctlops 0 0K 4K 166960K 463 0 iov 0 0K 24K 166960K 117 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1336 84K 85K 166960K 3773 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 33 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 62 0 dirhash 12 2K 2K 166960K 66 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 236K 166960K 5169 0 sigio 0 0K 0K 166960K 56 0 proc 60 59K 124K 166960K 774 0 subproc 72 4K 4K 166960K 110 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 270 0 in_multi 69 4K 7K 166960K 336 0 ether_multi 1 0K 0K 166960K 32 0 mrt 2 0K 0K 166960K 39 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 584 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 209 151K 167K 166960K 42144 0 UVM aobj 40 2K 2K 166960K 49 0 pinsyscall 35 70K 96K 166960K 6402 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 201 0 NDP 9 0K 2K 166960K 162 0 temp 79 8680K 8930K 166960K 104949 0 kqueue 13 20K 32K 166960K 526 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 207 0 204 1 0 1 1 0 8 0 rtentry 136 250 0 186 4 0 4 4 0 8 0 unpcb 144 1069 0 1054 1 0 1 1 0 8 0 syncache 336 31 0 31 1 1 0 1 0 8 0 tcpqe 32 23 0 23 1 1 0 1 0 8 0 tcpcb 736 657 0 626 3 0 3 3 0 8 0 arp 88 27 0 16 1 0 1 1 0 8 0 ipq 40 7 0 6 1 0 1 1 0 8 0 ipqe 40 13 0 12 1 0 1 1 0 8 0 inpcb 328 1851 0 1815 5 1 4 4 0 8 0 ip6q 72 9 0 9 1 1 0 1 0 8 0 ip6af 40 24 0 24 1 1 0 1 0 8 0 nd6 104 32 0 22 1 0 1 1 0 8 0 pkpcb 40 21 0 21 2 1 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 4 0 4 1 1 0 1 0 8 0 ppxss 1072 191 0 191 2 1 1 1 0 8 1 pppxif 1384 28 0 28 2 1 1 1 0 8 1 pfrktable 1344 3 0 3 1 1 0 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 rttmr 136 10 0 8 1 0 1 1 0 8 0 art_heap8 4096 5 0 1 5 1 4 5 0 8 0 art_heap4 256 1390 0 1056 29 3 26 29 0 8 0 art_table 40 1395 0 1057 5 0 5 5 0 8 0 art_node 32 244 0 189 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 11 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 56 0 46 1 0 1 1 0 8 0 shmpl 112 46 0 9 2 0 2 2 0 8 0 dirhash 1024 54 0 37 3 0 3 3 0 8 0 dino2pl 256 9103 0 7603 95 0 95 95 0 8 0 ffsino 256 9103 0 7603 95 0 95 95 0 8 0 nchpl 144 14843 0 13155 64 0 64 64 0 8 0 rtmask 32 48 0 48 1 1 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 37391 0 37388 3 1 2 2 0 8 1 kstatmem 264 270 0 252 2 0 2 2 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 18 0 18 2 1 1 1 0 8 1 scxspl 216 48333 0 48332 8 7 1 8 1 8 0 plimitpl 152 375 0 359 1 0 1 1 0 8 0 sigapl 424 5467 0 5399 9 0 9 9 0 8 0 knotepl 120 476681 0 476633 50 40 10 25 0 8 6 kqueuepl 184 664 0 655 1 0 1 1 0 8 0 pipepl 304 220 0 193 3 0 3 3 0 8 0 fdescpl 448 5418 0 5392 5 1 4 5 0 8 0 filepl 120 15190 0 14975 8 0 8 8 0 8 0 lockfpl 104 1531 0 1529 1 0 1 1 0 8 0 lockfspl 48 682 0 680 1 0 1 1 0 8 0 sessionpl 144 51 0 43 1 0 1 1 0 8 0 pgrppl 48 82 0 66 1 0 1 1 0 8 0 ucredpl 104 2624 0 2613 1 0 1 1 0 8 0 zombiepl 144 5399 0 5399 1 0 1 1 0 8 1 processpl 1168 5467 0 5399 6 0 6 6 0 8 0 procpl 656 10928 0 10853 8 0 8 8 0 8 0 sosppl 168 58 0 58 2 1 1 1 0 8 1 sockpl 552 3183 0 3129 5 0 5 5 0 8 0 mcl64k 65536 1224 0 1224 2 1 1 1 0 8 1 mcl16k 16384 795 0 795 2 1 1 1 0 8 1 mcl12k 12288 589 0 589 2 1 1 1 0 8 1 mcl9k 9216 225 0 225 2 1 1 1 0 8 1 mcl8k 8192 1231 0 1230 1 0 1 1 0 8 0 mcl4k 4096 12299 0 12248 14 7 7 14 0 8 0 mcl2k2 2112 8 0 8 1 1 0 1 0 8 0 mcl2k 2048 2744 0 2732 3 1 2 3 0 8 0 mtagpl 96 175 0 73 4 0 4 4 0 8 0 mbufpl 256 60797 0 60483 25 0 25 25 0 8 0 bufpl 280 12392 0 6165 446 0 446 446 0 8 0 anonpl 24 565621 0 557377 99 22 77 99 0 187 0 amapchunkpl 152 146307 0 145828 37 10 27 33 0 158 3 amappl16 200 9381 0 9122 45 18 27 39 0 8 0 amappl15 192 40 0 40 1 1 0 1 0 8 0 amappl14 184 164 0 154 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 6092 0 6066 3 1 2 3 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 15 0 15 1 1 0 1 0 8 0 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 34 0 32 1 0 1 1 0 8 0 amappl7 128 137 0 127 1 0 1 1 0 8 0 amappl6 120 238 0 235 1 0 1 1 0 8 0 amappl5 112 128 0 122 1 0 1 1 0 8 0 amappl4 104 357 0 339 1 0 1 1 0 8 0 amappl3 96 32495 0 32411 4 0 4 4 0 8 0 amappl2 88 820 0 765 2 0 2 2 0 8 0 amappl1 80 31469 0 30940 13 0 13 13 0 8 0 amappl 88 40982 0 40836 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 8 0 8 1 1 0 1 0 8 0 dma128 128 264 0 264 2 1 1 1 0 8 1 dma64 64 10 0 10 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 48 0 9 1 0 1 1 0 8 0 uaddrrnd 24 5418 0 5392 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5418 0 5392 1 0 1 1 0 8 0 vmmpekpl 168 33523 0 33470 3 0 3 3 0 8 0 vmmpepl 168 318643 0 316684 114 11 103 114 0 357 1 vmsppl 368 5417 0 5392 4 1 3 4 0 8 0 rwobjpl 40 72076 0 65061 74 0 74 74 0 8 0 pdppl 4096 10843 0 10784 117 50 67 83 0 8 8 pvpl 32 2248472 0 2235046 193 47 146 193 0 265 0 pmappl 216 5417 0 5392 3 1 2 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 422 0 76 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace icmp_mtudisc_timeout(fffffd8070e8bdd0,0) at icmp_mtudisc_timeout+0x111 sys/netinet/ip_icmp.c:1102 rt_timer_queue_flush(ffffffff839dc290) at rt_timer_queue_flush+0x281 sys/net/route.c:1586 ip_sysctl(ffff80003c9c110c,1,0,ffff80003c9c1138,200000001300,4) at ip_sysctl+0x845 sys/netinet/ip_input.c:1753 net_sysctl(ffff80003c9c1104,3,0,ffff80003c9c1138,200000001300,4,ea0cb13beac7938) at net_sysctl+0x64e sys/kern/uipc_domain.c:260 sys_sysctl(ffff80002a7d07c8,ffff80003c9c1270,ffff80003c9c11c0) at sys_sysctl+0x3f2 sys/kern/kern_sysctl.c:-1 syscall(ffff80003c9c1270) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9c1270) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x90c90e6c7c0, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace icmp_mtudisc_timeout(fffffd8070e8bdd0,0) at icmp_mtudisc_timeout+0x111 sys/netinet/ip_icmp.c:1102 rt_timer_queue_flush(ffffffff839dc290) at rt_timer_queue_flush+0x281 sys/net/route.c:1586 ip_sysctl(ffff80003c9c110c,1,0,ffff80003c9c1138,200000001300,4) at ip_sysctl+0x845 sys/netinet/ip_input.c:1753 net_sysctl(ffff80003c9c1104,3,0,ffff80003c9c1138,200000001300,4,ea0cb13beac7938) at net_sysctl+0x64e sys/kern/uipc_domain.c:260 sys_sysctl(ffff80002a7d07c8,ffff80003c9c1270,ffff80003c9c11c0) at sys_sysctl+0x3f2 sys/kern/kern_sysctl.c:-1 syscall(ffff80003c9c1270) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9c1270) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x90c90e6c7c0, count: -7