kernel: protection fault trap, code=0 Stopped at sblock+0x4a: movq 0x8(%rax),%rax ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace sblock(fffffd807c0b3d88,fffffd807c0b3ec0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd807c0b3d88,fffffd807c0b3ec0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd807c0b3d88,0,ffff8000211ee7d8,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff8000211ee720) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd80796ba270,ffff8000211ee7d8,3,fffffd807f7d88a0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800027afcd30,fffffd80796ba270,fffffd807f7d88a0,ffff8000211ee8a0,ffff8000211ee880) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 ktrstruct(ffff800027afcd30,ffffffff826067d9,ffff8000211ee990,10) at ktrstruct+0x169 ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff800027afcd30,ffffffff826067d9,ffff8000211ee990,10) at ktrstruct+0x169 sys/kern/kern_ktrace.c:315 sys_nanosleep(ffff800027afcd30,ffff8000211eea00,ffff8000211eea60) at sys_nanosleep+0xe0 sys/kern/kern_time.c:290 syscall(ffff8000211eead0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211eead0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc28a0, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000211ee5e0 rbx 0xfffffd807c0b3ec0 rdx 0 rcx 0xa rax 0x637cf90e933bb65 r8 0 r9 0 r10 0xfacdcb15e2710408 r11 0x9ab03f041a6dd5ef r12 0xfffffd807c0b3d01 r13 0x1 r14 0xfffffd807c0b3f10 r15 0xfffffd807c0b3d88 rip 0xffffffff81ee730a sblock+0x4a cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000211ee580 ss 0x10 sblock+0x4a: movq 0x8(%rax),%rax ddb{0}> show proc PROC (syz-executor.2) pid=414679 stat=onproc flags process=2 proc=1 pri=24, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3a48,0xffff800027b20fd8 process=0xffff8000fffec448 user=0xffff8000211e9000, vmspace=0xfffffd806a86a010 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17773 288665 8841 0 2 0 syz-executor.6 17773 452635 8841 0 3 0x4000080 fsleep syz-executor.6 90545 45328 30454 0 2 0 syz-executor.3 90545 352626 30454 0 3 0x4000080 fsleep syz-executor.3 85262 440316 48643 0 2 0 syz-executor.1 85262 82745 48643 0 3 0x4000080 fsleep syz-executor.1 90055 395311 1 0 3 0x100083 ttyin getty *78259 414679 58435 0 7 0x3 syz-executor.2 8164 99600 58435 0 2 0x83 syz-executor.0 97851 126590 0 0 3 0x14280 nfsidl nfsio 12418 166214 0 0 3 0x14280 nfsidl nfsio 12420 449363 0 0 3 0x14280 nfsidl nfsio 2586 335137 0 0 3 0x14280 nfsidl nfsio 87790 391326 0 0 3 0x14280 nfsidl nfsio 96346 271287 0 0 3 0x14280 nfsidl nfsio 73830 69245 0 0 3 0x14280 nfsidl nfsio 43133 237621 0 0 3 0x14280 nfsidl nfsio 11449 284213 0 0 3 0x14280 nfsidl nfsio 10501 197563 0 0 3 0x14280 nfsidl nfsio 17074 124185 0 0 3 0x14280 nfsidl nfsio 80504 309479 0 0 3 0x14280 nfsidl nfsio 13995 139019 0 0 3 0x14280 nfsidl nfsio 80012 180476 0 0 3 0x14280 nfsidl nfsio 32176 271219 0 0 3 0x14280 nfsidl nfsio 66634 197346 0 0 3 0x14280 nfsidl nfsio 46243 107384 0 0 3 0x14280 nfsidl nfsio 87747 211858 0 0 3 0x14280 nfsidl nfsio 51128 398837 0 0 3 0x14280 nfsidl nfsio 65176 300207 0 0 3 0x14280 nfsidl nfsio 50512 211079 58435 0 2 0x83 syz-executor.7 8841 149885 58435 0 2 0x83 syz-executor.6 14149 139108 0 0 3 0x14200 bored sosplice 39342 415448 0 0 3 0x14200 acct acct 28485 182110 58435 0 2 0x83 syz-executor.5 1010 130908 58435 0 2 0x83 syz-executor.4 30454 138732 58435 0 2 0x83 syz-executor.3 48643 165657 58435 0 2 0x83 syz-executor.1 58435 147992 74013 0 3 0x82 thrsleep syz-fuzzer 58435 504609 74013 0 3 0x4000082 thrsleep syz-fuzzer 58435 222182 74013 0 3 0x4000082 thrsleep syz-fuzzer 58435 273918 74013 0 3 0x4000082 thrsleep syz-fuzzer 58435 254241 74013 0 3 0x4000082 thrsleep syz-fuzzer 58435 365391 74013 0 2 0x4000083 syz-fuzzer 58435 55718 74013 0 3 0x4000082 thrsleep syz-fuzzer 58435 83040 74013 0 3 0x4000082 thrsleep syz-fuzzer 74013 208718 73315 0 3 0x10008a sigsusp ksh 73315 120130 8932 0 3 0x9a poll sshd 8932 499745 1 0 3 0x88 poll sshd 82335 184678 18566 74 3 0x100092 bpf pflogd 18566 505373 1 0 3 0x80 netio pflogd 99988 365851 7388 73 3 0x100090 kqread syslogd 7388 81076 1 0 3 0x100082 netio syslogd 3596 278484 1 0 3 0x100080 kqread resolvd 88460 449319 38878 77 3 0x100092 kqread dhcpleased 63125 91213 38878 77 3 0x100092 kqread dhcpleased 38878 345718 1 0 3 0x80 kqread dhcpleased 50120 245544 0 0 3 0x14200 bored smr 82316 500355 0 0 2 0x14200 zerothread 63294 106163 0 0 3 0x14200 aiodoned aiodoned 75779 361316 0 0 3 0x14200 syncer update 78537 68371 0 0 3 0x14200 cleaner cleaner 81930 328312 0 0 3 0x14200 reaper reaper 46694 176397 0 0 3 0x14200 pgdaemon pagedaemon 6309 198462 0 0 3 0x14200 bored viomb 46737 262762 0 0 3 0x40014200 acpi0 acpi0 72143 312243 0 0 7 0x40014200 idle1 15417 170726 0 0 3 0x14200 bored softnet 18113 517990 0 0 3 0x14200 bored systqmp 56674 376423 0 0 3 0x14200 bored systq 18325 46940 0 0 2 0x40014200 softclock 42816 430677 0 0 3 0x40014200 idle0 1 367378 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 78259 (syz-executor.2) thread 0xffff800027afcd30 (414679) exclusive rwlock unplock r = 0 (0xffffffff8291e710) #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 ktrstruct+0x169 ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] #7 ktrstruct+0x169 sys/kern/kern_ktrace.c:315 #8 sys_nanosleep+0xe0 sys/kern/kern_time.c:290 #9 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b463b0) #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 ktrstruct+0x169 ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] #9 ktrstruct+0x169 sys/kern/kern_ktrace.c:315 #10 sys_nanosleep+0xe0 sys/kern/kern_time.c:290 #11 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #12 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10200 6551K 7185K 78643K 16530 0 pcb 13 8K 8K 78643K 331 0 rtable 255 20K 20K 78643K 1164 0 ifaddr 101 22K 22K 78643K 527 0 sysctl 2 0K 0K 78643K 2 0 counters 58 35K 36K 78643K 182 0 ioctlops 0 0K 4K 78643K 1908 0 iov 0 0K 36K 78643K 175 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1273 80K 80K 78643K 3412 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 29K 78643K 55 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 219 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 89K 78643K 6231 0 sigio 0 0K 0K 78643K 21 0 proc 74 87K 124K 78643K 1131 0 subproc 104 6K 6K 78643K 221 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 369 0 in_multi 99 6K 7K 78643K 455 0 ether_multi 1 0K 0K 78643K 103 0 mrt 1 0K 0K 78643K 27 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 115 519K 519K 78643K 115 0 exec 0 0K 2K 78643K 1112 0 pfkey data 0 0K 0K 78643K 7 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 394 441K 442K 78643K 75035 0 UVM aobj 21 7K 7K 78643K 28 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 383 0 NDP 13 0K 2K 78643K 109 0 temp 146 4723K 4795K 78643K 32838 0 kqueue 11 16K 22K 78643K 309 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 216 0 213 1 0 1 1 0 8 0 rtentry 112 238 0 133 4 0 4 4 0 8 0 unpcb 136 1407 0 1392 4 2 2 2 0 8 1 syncache 296 49 0 49 6 6 0 1 0 8 0 tcpqe 32 115 0 115 4 4 0 1 0 8 0 tcpcb 736 995 0 983 11 8 3 4 0 8 1 arp 120 40 0 19 1 0 1 1 0 8 0 inpcb 304 2552 0 2540 7 5 2 3 0 8 0 rttmr 72 9 0 9 2 2 0 1 0 8 0 nd6 48 54 0 29 1 0 1 1 0 8 0 pkpcb 40 28 0 28 4 4 0 1 0 8 0 kcovpl 48 17 0 9 1 0 1 1 0 8 0 ppxss 1248 43 0 43 2 2 0 1 0 8 0 pfstscr 40 20 0 20 4 4 0 1 0 8 0 pffrag 232 6 0 5 2 1 1 1 0 482 0 pffrnode 88 6 0 5 2 1 1 1 0 8 0 pffrent 40 12 0 11 3 2 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrke_plain 168 10 0 10 2 2 0 1 0 8 0 pfrktable 1344 154 0 145 2 1 1 1 0 8 0 pftag 88 8 0 4 1 0 1 1 0 8 0 pfstitem 24 101 0 99 1 0 1 1 0 8 0 pfstkey 112 140 0 138 2 1 1 2 0 8 0 pfstate 320 124 0 122 6 5 1 6 0 8 0 pfrule 1360 139 0 94 4 0 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1009 0 608 33 7 26 29 0 8 0 art_table 32 1010 0 608 4 0 4 4 0 8 0 art_node 16 234 0 143 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 0 1 0 1 1 0 8 0 semapl 112 207 0 197 1 0 1 1 0 8 0 shmpl 112 25 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9564 0 8108 92 0 92 92 0 8 0 ffsino 272 9564 0 8108 98 0 98 98 0 8 0 nchpl 144 16812 0 15176 63 0 63 63 0 8 0 rtmask 32 20 0 20 2 2 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 44695 0 44695 2 1 1 2 0 8 1 percpumem 16 103 0 62 1 0 1 1 0 8 0 vcpupl 2048 26 0 0 4 0 4 4 0 8 0 vmpool 560 31 0 5 2 0 2 2 0 8 0 pfiaddrpl 120 42 0 35 5 4 1 1 0 8 0 scsiplug 72 5 0 5 1 1 0 1 0 8 0 scxspl 216 49863 0 49863 11 10 1 8 0 8 1 plimitpl 152 368 0 353 1 0 1 1 0 8 0 sigapl 424 6549 0 6486 8 0 8 8 0 8 0 futexpl 64 37250 0 37247 1 0 1 1 0 8 0 knotepl 112 123 0 0 4 0 4 4 0 8 0 kqueuepl 216 492 0 485 1 0 1 1 0 8 0 pipepl 336 480 0 452 6 1 5 5 0 8 2 fdescpl 496 6513 0 6486 5 1 4 5 0 8 0 filepl 152 19909 0 19666 25 10 15 15 0 8 5 lockfpl 104 864 0 862 1 0 1 1 0 8 0 lockfspl 48 351 0 349 1 0 1 1 0 8 0 sessionpl 144 35 0 18 1 0 1 1 0 8 0 pgrppl 48 51 0 34 1 0 1 1 0 8 0 ucredpl 96 3583 0 3571 1 0 1 1 0 8 0 zombiepl 144 6487 0 6483 1 0 1 1 0 8 0 processpl 1064 6549 0 6483 5 0 5 5 0 8 0 procpl 672 13503 0 13427 11 3 8 8 0 8 0 srpgc 96 16 0 16 2 2 0 1 0 8 0 sosppl 168 202 0 202 8 8 0 1 0 8 0 sockpl 480 4233 0 4203 17 8 9 9 0 8 4 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 16 0 0 2 0 2 2 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 287 0 0 20 0 20 20 0 8 1 mtagpl 96 505 0 0 13 0 13 13 0 8 0 mbufpl 256 921 0 0 53 1 52 52 0 8 0 bufpl 288 12115 0 5781 453 0 453 453 0 8 0 anonpl 24 1643564 0 1630667 135 49 86 107 0 186 0 amapchunkpl 152 180639 0 179994 53 23 30 40 0 158 1 amappl16 200 14861 0 14489 39 13 26 33 0 8 0 amappl15 192 1366 0 1359 1 0 1 1 0 8 0 amappl14 184 28 0 24 1 0 1 1 0 8 0 amappl13 176 924 0 920 1 0 1 1 0 8 0 amappl12 168 1839 0 1834 1 0 1 1 0 8 0 amappl11 160 836 0 818 1 0 1 1 0 8 0 amappl10 152 1142 0 1132 1 0 1 1 0 8 0 amappl9 144 699 0 695 1 0 1 1 0 8 0 amappl8 136 1010 0 921 4 0 4 4 0 8 0 amappl7 128 282 0 271 1 0 1 1 0 8 0 amappl6 120 468 0 444 2 1 1 2 0 8 0 amappl5 112 5877 0 5856 1 0 1 1 0 8 0 amappl4 104 1897 0 1868 2 1 1 2 0 8 0 amappl3 96 2614 0 2600 1 0 1 1 0 8 0 amappl2 88 2812 0 2754 3 1 2 3 0 8 0 amappl1 80 109218 0 108665 19 5 14 19 0 8 0 amappl 88 74231 0 73983 9 2 7 7 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 27 0 7 1 0 1 1 0 8 0 uaddrrnd 24 6544 0 6491 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6544 0 6491 1 0 1 1 0 8 0 vmmpekpl 168 38933 0 38878 3 0 3 3 0 8 0 vmmpepl 168 566380 0 564118 142 28 114 123 0 357 2 vmsppl 368 6543 0 6491 7 1 6 6 0 8 0 rwobjpl 56 130403 0 123062 108 3 105 108 0 8 0 pdppl 4096 13095 0 13008 220 125 95 95 0 8 8 pvpl 32 3216416 0 3201125 317 176 141 258 0 265 2 pmappl 248 6543 0 6491 5 1 4 4 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1018 0 146 25 0 25 25 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace sblock(fffffd807c0b3d88,fffffd807c0b3ec0,1) at sblock+0x4a soassertlocked sys/kern/uipc_socket2.c:323 [inline] sblock(fffffd807c0b3d88,fffffd807c0b3ec0,1) at sblock+0x4a sys/kern/uipc_socket2.c:378 sosend(fffffd807c0b3d88,0,ffff8000211ee7d8,0,0,0) at sosend+0x280 sys/kern/uipc_socket.c:527 fifo_write(ffff8000211ee720) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:288 VOP_WRITE(fffffd80796ba270,ffff8000211ee7d8,3,fffffd807f7d88a0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff800027afcd30,fffffd80796ba270,fffffd807f7d88a0,ffff8000211ee8a0,ffff8000211ee880) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 ktrstruct(ffff800027afcd30,ffffffff826067d9,ffff8000211ee990,10) at ktrstruct+0x169 ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrstruct(ffff800027afcd30,ffffffff826067d9,ffff8000211ee990,10) at ktrstruct+0x169 sys/kern/kern_ktrace.c:315 sys_nanosleep(ffff800027afcd30,ffff8000211eea00,ffff8000211eea60) at sys_nanosleep+0xe0 sys/kern/kern_time.c:290 syscall(ffff8000211eead0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211eead0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc28a0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5