kernel: protection fault trap, code=0 Stopped at sblock+0x4a: movq 0x8(%rax),%rax ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace sblock(fffffd8074393388,fffffd80743934a0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8074393388,fffffd80743934a0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8074393388,0,ffff8000215dd0c0,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff8000215dd010) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80797cde60,ffff8000215dd0c0,3,fffffd807f7d83c0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000216067f0,fffffd80797cde60,fffffd807f7d83c0,ffff8000215dd180,ffff8000215dd160) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrstruct(ffff8000216067f0,ffffffff82604620,ffff8000215dd2c0,20) at ktrstruct+0x16f ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff8000216067f0,ffffffff82604620,ffff8000215dd2c0,20) at ktrstruct+0x16f sys/kern/kern_ktrace.c:315 ppollregister_evts(ffff8000216067f0,ffff8000215dd2c0,1,ffff8000215dd5e0,2) at ppollregister_evts+0xb8 sys/kern/sys_generic.c:1125 ppollregister(ffff8000216067f0,ffff8000215dd5d0,4,ffff8000215dd63c,ffff8000215dd638) at ppollregister+0x2ef sys/kern/sys_generic.c:1231 doppoll(ffff8000216067f0,54d42caa000,4,0,ffff8000215dd6c4,ffff8000215dd7a0) at doppoll+0x189 sys/kern/sys_generic.c:1037 sys_ppoll(ffff8000216067f0,ffff8000215dd740,ffff8000215dd7a0) at sys_ppoll+0x133 sys/kern/sys_generic.c:993 syscall(ffff8000215dd810) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc2800, count: -12 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000215dced0 rbx 0xfffffd80743934a0 rdx 0 rcx 0xffff8000216067f4 rax 0xca0c97987e6d3797 r8 0 r9 0 r10 0xd80b07484c5a0037 r11 0xa229b17a1f29433a r12 0xfffffd8074393301 r13 0x1 r14 0xfffffd80743934f0 r15 0xfffffd8074393388 rip 0xffffffff81f6de8a sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000215dce70 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb> show proc PROC (sshd) pid=513889 stat=onproc flags process=12 proc=9 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021606010,0xffff800021607520 process=0xffff8000215e07e0 user=0xffff8000215d8000, vmspace=0xfffffd807f018990 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 17281 314466 36610 0 2 0 syz-executor.4 17281 373333 36610 0 3 0x4000080 fsleep syz-executor.4 17281 403987 36610 0 3 0x4000080 fsleep syz-executor.4 94214 52562 89604 0 2 0 syz-executor.3 6414 379537 93133 0 2 0 syz-executor.2 6414 372117 93133 0 3 0x4000080 netio syz-executor.2 6414 401064 93133 0 3 0x4000080 fsleep syz-executor.2 6414 378215 93133 0 2 0x4000000 syz-executor.2 37372 441103 17772 0 3 0x3000 suspend syz-executor.5 37372 169347 17772 0 2 0x4081000 syz-executor.5 78877 22661 72274 0 2 0x83 syz-executor.7 17772 57279 72274 0 2 0x83 syz-executor.5 36610 170101 72274 0 2 0x83 syz-executor.4 84102 54539 72274 0 2 0x83 syz-executor.6 83714 142110 72274 0 2 0x83 syz-executor.1 93133 362830 72274 0 2 0x83 syz-executor.2 89604 4272 72274 0 2 0x83 syz-executor.3 92167 304736 72274 0 2 0x83 syz-executor.0 72274 212326 94908 0 3 0x82 thrsleep syz-fuzzer 72274 264725 94908 0 2 0x4000083 syz-fuzzer 72274 522957 94908 0 3 0x4000082 thrsleep syz-fuzzer 72274 46816 94908 0 3 0x4000082 thrsleep syz-fuzzer 72274 26965 94908 0 3 0x4000082 thrsleep syz-fuzzer 72274 502472 94908 0 3 0x4000082 thrsleep syz-fuzzer 72274 315994 94908 0 2 0x4000083 syz-fuzzer 72274 341545 94908 0 3 0x4000082 thrsleep syz-fuzzer 94908 144840 91864 0 3 0x10008a sigsusp ksh *91864 513889 52300 0 7 0x1b sshd 80509 6856 1 0 3 0x100083 ttyin getty 52300 70551 1 0 3 0x88 kqread sshd 80631 477079 21417 73 3 0x1100090 kqread syslogd 21417 427838 1 0 3 0x100082 netio syslogd 53378 123364 1 0 3 0x100080 kqread resolvd 78785 57780 39199 77 3 0x100092 kqread dhcpleased 8135 124311 39199 77 3 0x100092 kqread dhcpleased 39199 120617 1 0 3 0x80 kqread dhcpleased 27659 211246 0 0 3 0x14200 bored smr 18359 40220 0 0 2 0x14200 zerothread 24644 218984 0 0 3 0x14200 aiodoned aiodoned 25668 278189 0 0 3 0x14200 syncer update 27570 275169 0 0 3 0x14200 cleaner cleaner 57630 6364 0 0 3 0x14200 reaper reaper 71049 456913 0 0 3 0x14200 pgdaemon pagedaemon 41386 232582 0 0 3 0x14200 bored viomb 57225 47231 0 0 3 0x40014200 acpi0 acpi0 70822 511066 0 0 3 0x14200 bored softnet 66247 73906 0 0 3 0x14200 bored systqmp 75410 30900 0 0 3 0x14200 bored systq 82770 292156 0 0 3 0x40014200 bored softclock 41339 468179 0 0 3 0x40014200 idle0 1 517284 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10165 6409K 6671K 78643K 11440 0 pcb 13 8K 8K 78643K 26 0 rtable 239 7K 9K 78643K 426 0 ifaddr 81 16K 18K 78643K 134 0 counters 27 17K 17K 78643K 29 0 ioctlops 0 0K 4K 78643K 66 0 iov 0 0K 12K 78643K 40 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1275 80K 80K 78643K 1347 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 0K 0K 78643K 2 0 sem 9 0K 0K 78643K 9 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 85K 78643K 269 0 proc 55 54K 79K 78643K 459 0 subproc 104 6K 6K 78643K 104 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 4 0 in_multi 99 6K 6K 78643K 99 0 ether_multi 1 0K 0K 78643K 1 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 2K 78643K 619 0 tdb 3 0K 0K 78643K 3 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 255 76K 77K 78643K 4596 0 UVM aobj 73 3K 3K 78643K 73 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 11 0K 1K 78643K 29 0 temp 129 4703K 4767K 78643K 4766 0 kqueue 12 18K 24K 78643K 31 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 52 0 49 1 0 1 1 0 8 0 rtentry 112 111 0 1 4 0 4 4 0 8 0 unpcb 136 178 0 163 3 0 3 3 0 8 2 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 56 0 56 1 1 0 1 0 8 0 tcpcb 736 48 0 44 4 0 4 4 0 8 3 arp 88 18 0 0 1 0 1 1 0 8 0 inpcb 312 122 0 115 4 0 4 4 0 8 3 nd6 48 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pfrktable 1344 34 0 34 1 0 1 1 0 8 1 pftag 88 5 0 4 1 0 1 1 0 8 0 pfrule 1360 16 0 16 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 32 453 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 70 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1662 0 230 90 0 90 90 0 8 0 ffsino 240 1662 0 230 85 0 85 85 0 8 0 nchpl 144 2110 0 443 62 0 62 62 0 8 0 uvmvnodes 80 1821 0 0 38 0 38 38 0 8 0 vnodes 224 1821 0 0 108 0 108 108 0 8 0 namei 1024 7254 0 7254 2 1 1 2 0 8 1 pfiaddrpl 120 10 0 10 1 0 1 1 0 8 1 scxspl 216 6373 0 6373 9 1 8 8 0 8 8 plimitpl 152 28 0 14 1 0 1 1 0 8 0 sigapl 424 554 0 515 6 0 6 6 0 8 1 futexpl 64 1725 0 1722 1 0 1 1 0 8 0 knotepl 120 9187 0 9106 4 0 4 4 0 8 0 kqueuepl 184 35 0 27 1 0 1 1 0 8 0 pipepl 304 218 0 190 5 0 5 5 0 8 2 fdescpl 432 541 0 516 4 0 4 4 0 8 0 filepl 120 2781 0 2540 11 0 11 11 0 8 3 lockfpl 104 186 0 184 2 0 2 2 0 8 1 lockfspl 48 28 0 26 1 0 1 1 0 8 0 sessionpl 144 23 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 7 1 0 1 1 0 8 0 ucredpl 96 226 0 216 1 0 1 1 0 8 0 zombiepl 144 517 0 515 1 0 1 1 0 8 0 processpl 1000 554 0 515 6 0 6 6 0 8 0 procpl 672 809 0 757 6 0 6 6 0 8 0 sockpl 448 352 0 327 9 0 9 9 0 8 5 mcl64k 65536 14 0 14 1 0 1 1 0 8 1 mcl16k 16384 10 0 10 1 0 1 1 0 8 1 mcl12k 12288 5 0 5 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 27 0 27 2 1 1 1 0 8 1 mcl4k 4096 17 0 17 2 1 1 1 0 8 1 mcl2k2 2112 3 0 3 1 0 1 1 0 8 1 mcl2k 2048 75844 0 75795 14 5 9 13 0 8 2 mtagpl 96 22 0 7 2 1 1 1 0 8 0 mbufpl 256 121788 0 121532 20 1 19 19 0 8 0 bufpl 288 3769 0 149 259 0 259 259 0 8 0 anonpl 24 106718 0 89643 110 0 110 110 0 188 0 amapchunkpl 152 10341 0 9632 33 0 33 33 0 158 2 amappl16 200 1044 0 480 31 0 31 31 0 8 0 amappl15 192 143 0 136 1 0 1 1 0 8 0 amappl14 184 1 0 0 1 0 1 1 0 8 0 amappl13 176 90 0 88 1 0 1 1 0 8 0 amappl12 168 29 0 28 2 1 1 1 0 8 0 amappl11 160 83 0 69 1 0 1 1 0 8 0 amappl10 152 61 0 54 1 0 1 1 0 8 0 amappl9 144 458 0 455 1 0 1 1 0 8 0 amappl8 136 542 0 502 2 0 2 2 0 8 0 amappl7 128 112 0 102 1 0 1 1 0 8 0 amappl6 120 186 0 168 2 1 1 2 0 8 0 amappl5 112 373 0 358 1 0 1 1 0 8 0 amappl4 104 872 0 844 2 1 1 2 0 8 0 amappl3 96 206 0 194 1 0 1 1 0 8 0 amappl2 88 551 0 506 3 1 2 3 0 8 0 amappl1 80 12923 0 12402 18 5 13 18 0 8 0 amappl 88 4180 0 3981 6 0 6 6 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 72 72 0 0 2 0 2 2 0 8 0 uaddrrnd 24 541 0 516 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 541 0 516 1 0 1 1 0 8 0 vmmpekpl 168 9037 0 8993 3 0 3 3 0 8 0 vmmpepl 168 54260 0 52051 141 6 135 141 0 357 26 vmsppl 272 540 0 516 3 0 3 3 0 8 1 rwobjpl 24 15836 0 12500 21 0 21 21 0 8 0 pdppl 4096 1088 0 1032 102 38 64 74 0 8 8 pvpl 32 314444 0 293469 258 10 248 258 0 265 68 pmappl 216 540 0 516 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 635 0 49 17 0 17 17 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace sblock(fffffd8074393388,fffffd80743934a0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8074393388,fffffd80743934a0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8074393388,0,ffff8000215dd0c0,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff8000215dd010) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80797cde60,ffff8000215dd0c0,3,fffffd807f7d83c0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000216067f0,fffffd80797cde60,fffffd807f7d83c0,ffff8000215dd180,ffff8000215dd160) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrstruct(ffff8000216067f0,ffffffff82604620,ffff8000215dd2c0,20) at ktrstruct+0x16f ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff8000216067f0,ffffffff82604620,ffff8000215dd2c0,20) at ktrstruct+0x16f sys/kern/kern_ktrace.c:315 ppollregister_evts(ffff8000216067f0,ffff8000215dd2c0,1,ffff8000215dd5e0,2) at ppollregister_evts+0xb8 sys/kern/sys_generic.c:1125 ppollregister(ffff8000216067f0,ffff8000215dd5d0,4,ffff8000215dd63c,ffff8000215dd638) at ppollregister+0x2ef sys/kern/sys_generic.c:1231 doppoll(ffff8000216067f0,54d42caa000,4,0,ffff8000215dd6c4,ffff8000215dd7a0) at doppoll+0x189 sys/kern/sys_generic.c:1037 sys_ppoll(ffff8000216067f0,ffff8000215dd740,ffff8000215dd7a0) at sys_ppoll+0x133 sys/kern/sys_generic.c:993 syscall(ffff8000215dd810) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc2800, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace sblock(fffffd8074393388,fffffd80743934a0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8074393388,fffffd80743934a0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8074393388,0,ffff8000215dd0c0,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:517 fifo_write(ffff8000215dd010) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd80797cde60,ffff8000215dd0c0,3,fffffd807f7d83c0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000216067f0,fffffd80797cde60,fffffd807f7d83c0,ffff8000215dd180,ffff8000215dd160) at ktrwriteraw+0x13d sys/kern/kern_ktrace.c:666 ktrstruct(ffff8000216067f0,ffffffff82604620,ffff8000215dd2c0,20) at ktrstruct+0x16f ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff8000216067f0,ffffffff82604620,ffff8000215dd2c0,20) at ktrstruct+0x16f sys/kern/kern_ktrace.c:315 ppollregister_evts(ffff8000216067f0,ffff8000215dd2c0,1,ffff8000215dd5e0,2) at ppollregister_evts+0xb8 sys/kern/sys_generic.c:1125 ppollregister(ffff8000216067f0,ffff8000215dd5d0,4,ffff8000215dd63c,ffff8000215dd638) at ppollregister+0x2ef sys/kern/sys_generic.c:1231 doppoll(ffff8000216067f0,54d42caa000,4,0,ffff8000215dd6c4,ffff8000215dd7a0) at doppoll+0x189 sys/kern/sys_generic.c:1037 sys_ppoll(ffff8000216067f0,ffff8000215dd740,ffff8000215dd7a0) at sys_ppoll+0x133 sys/kern/sys_generic.c:993 syscall(ffff8000215dd810) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc2800, count: -12