kernel: protection fault trap, code=0 Stopped at sblock+0x4a: movq 0x8(%rax),%rax ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace sblock(fffffd8070bbe3d8,fffffd8070bbe510,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8070bbe3d8,fffffd8070bbe510,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8070bbe3d8,0,ffff8000211e6a78,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff8000211e69c0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd8070404888,ffff8000211e6a78,3,fffffd807f7d77e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff6fd0,fffffd8070404888,fffffd807f7d77e0,ffff8000211e6b40,ffff8000211e6b20) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000ffff6fd0,7,0,ffff8000006c5850,10a0) at ktrgenio+0x282 ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000ffff6fd0,7,0,ffff8000006c5850,10a0) at ktrgenio+0x282 sys/kern/kern_ktrace.c:265 dofilereadv(ffff8000ffff6fd0,7,ffff8000211e6cb8,0,ffff8000211e6db0) at dofilereadv+0x2e3 sys/kern/sys_generic.c:268 sys_read(ffff8000ffff6fd0,ffff8000211e6d50,ffff8000211e6db0) at sys_read+0x83 sys/kern/sys_generic.c:172 syscall(ffff8000211e6e20) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211e6e20) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc5810, count: -10 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000211e6880 rbx 0xfffffd8070bbe510 rdx 0 rcx 0xb rax 0x691a33796f9deca7 r8 0x44b82fa09b5a53 r9 0x1 r10 0xf10e8f1daba36ce6 r11 0x932b4ec015cff673 r12 0xfffffd8070bbe301 r13 0x1 r14 0xfffffd8070bbe560 r15 0xfffffd8070bbe3d8 rip 0xffffffff8139928a sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000211e6820 ss 0 sblock+0x4a: movq 0x8(%rax),%rax ddb{1}> show proc PROC (sshd) pid=166474 stat=onproc flags process=12 proc=1 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff62b0,0xffff8000ffff6800 process=0xffff8000211f10b0 user=0xffff8000211e1000, vmspace=0xfffffd806edaccf8 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 83250 51004 23278 0 3 0x82 nanoslp syz-executor.0 19777 175320 23278 0 2 0x83 syz-executor.2 29389 253753 23278 0 2 0x83 syz-executor.3 21891 59889 0 0 3 0x14280 nfsidl nfsio 26940 366079 0 0 3 0x14280 nfsidl nfsio 75824 33392 0 0 3 0x14280 nfsidl nfsio 60034 356308 0 0 3 0x14280 nfsidl nfsio 29733 308869 0 0 3 0x14280 nfsidl nfsio 64775 223023 0 0 3 0x14280 nfsidl nfsio 18452 477339 0 0 3 0x14280 nfsidl nfsio 9852 268950 0 0 3 0x14280 nfsidl nfsio 12275 512266 0 0 3 0x14280 nfsidl nfsio 73584 199121 0 0 3 0x14280 nfsidl nfsio 27194 207367 0 0 3 0x14280 nfsidl nfsio 65692 373977 0 0 3 0x14280 nfsidl nfsio 62883 288956 0 0 3 0x14280 nfsidl nfsio 78459 63467 0 0 3 0x14280 nfsidl nfsio 6511 318543 0 0 3 0x14280 nfsidl nfsio 7991 20189 0 0 3 0x14280 nfsidl nfsio 4326 220448 0 0 3 0x14280 nfsidl nfsio 11641 110848 0 0 3 0x14280 nfsidl nfsio 8084 361382 0 0 3 0x14280 nfsidl nfsio 84151 260936 0 0 3 0x14280 nfsidl nfsio 28871 511296 0 0 3 0x14200 bored sosplice 4996 17162 23278 0 2 0x83 syz-executor.1 23278 152339 38399 0 3 0x82 thrsleep syz-fuzzer 23278 359154 38399 0 3 0x4000082 nanoslp syz-fuzzer 23278 25199 38399 0 3 0x4000082 thrsleep syz-fuzzer 23278 266905 38399 0 3 0x4000082 thrsleep syz-fuzzer 23278 177078 38399 0 3 0x4000082 thrsleep syz-fuzzer 23278 281898 38399 0 3 0x4000082 thrsleep syz-fuzzer 23278 89745 38399 0 2 0x4000083 syz-fuzzer 23278 454788 38399 0 3 0x4000082 thrsleep syz-fuzzer 38399 99945 75576 0 3 0x10008a sigsusp ksh *75576 166474 19283 0 7 0x13 sshd 308 13929 1 0 3 0x100083 ttyin getty 19283 133179 1 0 3 0x88 poll sshd 32775 175391 13676 74 3 0x100092 bpf pflogd 13676 183504 1 0 3 0x80 netio pflogd 47356 469331 77471 73 3 0x100090 kqread syslogd 77471 334617 1 0 3 0x100082 netio syslogd 5295 425220 1 0 3 0x100080 kqread resolvd 80314 4893 90055 77 3 0x100092 kqread dhcpleased 83660 473683 90055 77 3 0x100092 kqread dhcpleased 90055 105886 1 0 3 0x80 kqread dhcpleased 14752 516549 0 0 3 0x14200 bored smr 18883 59113 0 0 3 0x14200 pgzero zerothread 61030 148147 0 0 3 0x14200 aiodoned aiodoned 26339 48522 0 0 3 0x14200 syncer update 20545 135476 0 0 3 0x14200 cleaner cleaner 35016 505016 0 0 7 0x14200 reaper 67048 91355 0 0 3 0x14200 pgdaemon pagedaemon 91719 152798 0 0 3 0x14200 bored viomb 71631 281882 0 0 3 0x40014200 acpi0 acpi0 89146 499654 0 0 3 0x40014200 idle1 99300 157090 0 0 3 0x14200 bored softnet 77857 220563 0 0 3 0x14200 bored systqmp 63424 481148 0 0 3 0x14200 bored systq 78000 265206 0 0 3 0x40014200 bored softclock 7779 119508 0 0 3 0x40014200 idle0 1 268743 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 75576 (sshd) thread 0xffff8000ffff6fd0 (166474) exclusive rwlock unplock r = 0 (0xffffffff827759c0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rwsleep+0x100 sys/kern/kern_synch.c:316 #3 sosend+0x71a sys/kern/uipc_socket.c:563 #4 fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 #5 VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 #6 ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 #7 ktrgenio+0x282 ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] #7 ktrgenio+0x282 sys/kern/kern_ktrace.c:265 #8 dofilereadv+0x2e3 sys/kern/sys_generic.c:268 #9 sys_read+0x83 sys/kern/sys_generic.c:172 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828d7800) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x1b2 sys/kern/kern_synch.c:433 #4 rwsleep+0xd5 sys/kern/kern_synch.c:313 #5 sosend+0x71a sys/kern/uipc_socket.c:563 #6 fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 #7 VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 #8 ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 #9 ktrgenio+0x282 ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] #9 ktrgenio+0x282 sys/kern/kern_ktrace.c:265 #10 dofilereadv+0x2e3 sys/kern/sys_generic.c:268 #11 sys_read+0x83 sys/kern/sys_generic.c:172 #12 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #12 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #13 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10166 6480K 6860K 78643K 14168 0 pcb 13 12K 14K 78643K 674 0 rtable 161 6K 6K 78643K 631 0 ifaddr 62 14K 15K 78643K 216 0 counters 48 34K 34K 78643K 96 0 ioctlops 0 0K 4K 78643K 1742 0 iov 0 0K 16K 78643K 377 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1266 80K 80K 78643K 1936 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 20 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 3058 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 49K 78643K 2396 0 sigio 0 0K 0K 78643K 41 0 proc 70 87K 111K 78643K 698 0 subproc 52 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 759 0 in_multi 55 3K 4K 78643K 250 0 ether_multi 1 0K 0K 78643K 31 0 mrt 1 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 2K 78643K 790 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 274 195K 196K 78643K 31350 0 UVM aobj 44 2K 2K 78643K 53 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 233 0 NDP 8 0K 1K 78643K 60 0 temp 80 4201K 4271K 78643K 15542 0 kqueue 10 14K 22K 78643K 75 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 194 0 191 3 2 1 2 0 8 0 rtentry 112 193 0 125 2 0 2 2 0 8 0 unpcb 136 831 0 816 11 10 1 5 0 8 0 syncache 296 8 0 8 2 2 0 1 0 8 0 tcpcb 736 1158 0 1147 30 22 8 9 0 8 6 arp 120 30 0 20 1 0 1 1 0 8 0 inpcb 304 2982 0 2975 35 30 5 12 0 8 4 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 48 0 34 1 0 1 1 0 8 0 kcovpl 48 12 0 8 1 0 1 1 0 8 0 ppxss 1248 4 0 4 1 1 0 1 0 8 0 pfstscr 40 9 0 9 1 1 0 1 0 8 0 pffrag 232 6 0 6 1 0 1 1 0 482 1 pffrnode 88 6 0 6 1 0 1 1 0 8 1 pffrent 40 141 0 141 1 0 1 1 0 8 1 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 5 0 2 1 0 1 1 0 8 0 pftag 88 3 0 3 1 1 0 1 0 8 0 pfstitem 24 14 0 12 1 0 1 1 0 8 0 pfstkey 112 32 0 30 1 0 1 1 0 8 0 pfstate 320 23 0 21 2 1 1 2 0 8 0 pfrule 1360 62 0 46 5 3 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 779 0 462 24 3 21 21 0 8 0 art_table 32 780 0 462 3 0 3 3 0 8 0 art_node 16 192 0 130 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 3 1 0 1 1 0 8 0 semupl 112 8 0 8 1 1 0 1 0 8 0 semapl 112 3052 0 3042 1 0 1 1 0 8 0 shmpl 112 50 0 9 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4118 0 2693 90 0 90 90 0 8 0 ffsino 272 4118 0 2693 96 0 96 96 0 8 0 nchpl 144 7255 0 5658 61 0 61 61 0 8 0 uvmvnodes 80 4685 0 0 96 0 96 96 0 8 0 vnodes 224 4685 0 0 276 0 276 276 0 8 0 namei 1024 23346 0 23346 4 3 1 1 0 8 1 percpumem 16 60 0 24 1 0 1 1 0 8 0 vcpupl 2048 10 0 0 2 0 2 2 0 8 0 vmpool 560 78 0 68 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 1 1 0 1 1 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 26113 0 26113 15 14 1 8 0 8 1 plimitpl 152 197 0 186 1 0 1 1 0 8 0 sigapl 424 2631 0 2577 7 0 7 7 0 8 0 futexpl 64 24683 0 24683 4 3 1 1 0 8 1 knotepl 112 82 0 0 3 0 3 3 0 8 0 kqueuepl 216 245 0 236 5 3 2 3 0 8 1 pipepl 336 321 0 305 9 6 3 7 0 8 1 fdescpl 496 2596 0 2577 4 1 3 4 0 8 0 filepl 152 14049 0 13899 39 26 13 15 0 8 7 lockfpl 104 251 0 249 1 0 1 1 0 8 0 lockfspl 48 110 0 108 1 0 1 1 0 8 0 sessionpl 144 28 0 15 1 0 1 1 0 8 0 pgrppl 48 28 0 15 1 0 1 1 0 8 0 ucredpl 96 1081 0 1069 1 0 1 1 0 8 0 zombiepl 144 2577 0 2576 1 0 1 1 0 8 0 processpl 1064 2631 0 2576 4 0 4 4 0 8 0 procpl 672 6841 0 6779 8 1 7 7 0 8 1 srpgc 96 6 0 6 3 3 0 1 0 8 0 sosppl 168 11 0 11 2 2 0 1 0 8 0 sockpl 480 4011 0 3986 66 55 11 21 0 8 7 mcl64k 65536 16 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 173 0 0 21 0 21 21 0 8 0 mtagpl 96 95 0 0 3 0 3 3 0 8 0 mbufpl 256 659 0 0 37 0 37 37 0 8 0 bufpl 288 7631 0 1287 454 0 454 454 0 8 0 anonpl 24 722930 0 704599 187 51 136 161 0 186 21 amapchunkpl 152 77301 0 76590 54 22 32 45 0 158 1 amappl16 200 6553 0 5973 58 15 43 43 0 8 12 amappl15 192 307 0 306 1 0 1 1 0 8 0 amappl14 184 521 0 516 1 0 1 1 0 8 0 amappl13 176 206 0 204 1 0 1 1 0 8 0 amappl12 168 562 0 559 1 0 1 1 0 8 0 amappl11 160 225 0 211 1 0 1 1 0 8 0 amappl10 152 154 0 145 1 0 1 1 0 8 0 amappl9 144 775 0 772 1 0 1 1 0 8 0 amappl8 136 1080 0 1028 2 0 2 2 0 8 0 amappl7 128 649 0 637 1 0 1 1 0 8 0 amappl6 120 504 0 484 1 0 1 1 0 8 0 amappl5 112 1681 0 1664 1 0 1 1 0 8 0 amappl4 104 1299 0 1270 1 0 1 1 0 8 0 amappl3 96 780 0 764 1 0 1 1 0 8 0 amappl2 88 1099 0 1059 2 1 1 2 0 8 0 amappl1 80 50023 0 49547 14 3 11 13 0 8 0 amappl 88 30857 0 30666 7 1 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 52 0 9 1 0 1 1 0 8 0 uaddrrnd 24 2674 0 2644 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2674 0 2644 1 0 1 1 0 8 0 vmmpekpl 168 21986 0 21945 3 0 3 3 0 8 0 vmmpepl 168 241272 0 239297 164 56 108 115 0 357 11 vmsppl 368 2673 0 2644 3 0 3 3 0 8 0 rwobjpl 56 63721 0 57563 90 0 90 90 0 8 0 pdppl 4096 5356 0 5298 92 28 64 65 0 8 6 pvpl 32 1328922 0 1306907 307 90 217 266 0 265 33 pmappl 248 2673 0 2644 3 0 3 3 0 8 1 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 883 0 67 24 0 24 24 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff827a7ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828d75f8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828d75f8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211497a0) at reaper+0x150 sys/kern/kern_exit.c:450 end trace frame: 0x0, count: -5 ddb{0}> machine ddbcpu 1 Stopped at sblock+0x4a: movq 0x8(%rax),%rax ddb{1}> trace sblock(fffffd8070bbe3d8,fffffd8070bbe510,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd8070bbe3d8,fffffd8070bbe510,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd8070bbe3d8,0,ffff8000211e6a78,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff8000211e69c0) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd8070404888,ffff8000211e6a78,3,fffffd807f7d77e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff8000ffff6fd0,fffffd8070404888,fffffd807f7d77e0,ffff8000211e6b40,ffff8000211e6b20) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 ktrgenio(ffff8000ffff6fd0,7,0,ffff8000006c5850,10a0) at ktrgenio+0x282 ktrwrite2 sys/kern/kern_ktrace.c:630 [inline] ktrgenio(ffff8000ffff6fd0,7,0,ffff8000006c5850,10a0) at ktrgenio+0x282 sys/kern/kern_ktrace.c:265 dofilereadv(ffff8000ffff6fd0,7,ffff8000211e6cb8,0,ffff8000211e6db0) at dofilereadv+0x2e3 sys/kern/sys_generic.c:268 sys_read(ffff8000ffff6fd0,ffff8000211e6d50,ffff8000211e6db0) at sys_read+0x83 sys/kern/sys_generic.c:172 syscall(ffff8000211e6e20) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211e6e20) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc5810, count: -10