kernel: protection fault trap, code=0 Stopped at __x86_indirect_thunk_r11+0x14: ret ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace __x86_indirect_thunk_r11() at __x86_indirect_thunk_r11+0x14 spec_write(ffff80002efec340) at spec_write+0x120 sys/kern/spec_vnops.c:302 VOP_WRITE(fffffd807c6c05f0,ffff80002efec560,1,fffffd80097fb340) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806c0c42d0,ffff80002efec560,0) at vn_write+0x1d4 sys/kern/vfs_vnops.c:408 dofilewritev(ffff8000383f8550,3,ffff80002efec560,0,ffff80002efec620) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_writev(ffff8000383f8550,ffff80002efec6d0,ffff80002efec620) at sys_writev+0xd8 sys/kern/sys_generic.c:327 syscall(ffff80002efec6d0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002efec6d0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa860f2a8fe0, count: -8 ddb{1}> show registers rdi 0xffff800001411000 rsi 0xfffffd8066e63400 rbp 0xffff80002efec290 rbx 0 rdx 0xffff80002efec130 rcx 0 rax 0 r8 0x7f7fffffc000 r9 0x1 r10 0x7dbff3e3cfb88d3e r11 0x65bd900000000 r12 0 r13 0xffff800001411000 r14 0xffff8000014dba00 r15 0xffff8000014dbac8 rip 0xffffffff82152304 __x86_indirect_thunk_r11+0x14 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002efec120 ss 0x10 __x86_indirect_thunk_r11+0x14: ret ddb{1}> show proc PROC (syz-executor) tid=361259 pid=15222 tcnt=2 stat=onproc flags process=1000 proc=4080000 runpri=0, usrpri=60, slppri=0, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff07d0 scnt=1 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff07d0,0xffff8000383f99e0 process=0xffff8000fffe9858 user=0xffff80002efe7000, vmspace=0xfffffd806c1e9b60 estcpu=10, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 96017 353465 64858 0 2 0x2 sh 11906 240532 82082 0 2 0 syz-executor 3561 260716 26862 0 3 0x2 clonelk ifconfig 26862 168724 57486 0 3 0x10008a sigsusp sh 83470 261111 28426 0 3 0x2 smrbar ifconfig 36240 155487 37097 0 3 0x2 clonelk ifconfig 37097 8129 43901 0 3 0x10008a sigsusp sh 28426 206734 83748 0 3 0x10008a sigsusp sh 98591 349450 69231 0 2 0x2 ifconfig 57486 318430 82082 0 3 0x82 wait syz-executor 43901 295034 82082 0 3 0x82 wait syz-executor 83748 229615 82082 0 3 0x82 wait syz-executor 69231 88731 29017 0 3 0x10008a sigsusp sh 29017 122752 82082 0 3 0x82 wait syz-executor 64858 131617 82082 0 7 0x10000002 syz-executor 68442 241009 82082 0 3 0x2 clonelk syz-executor 44715 302526 1 0 3 0x3010 suspend syz-executor 44715 458778 1 0 2 0x4081010 syz-executor 1541 375456 0 0 3 0x14200 acct acct 66316 234567 1 0 3 0x3000 suspend syz-executor 66316 253604 1 0 2 0x4081000 syz-executor 15222 87254 1 0 3 0x3000 suspend syz-executor *15222 361259 1 0 7 0x4081000 syz-executor 55431 344160 1 0 2 0x3000 syz-executor 42642 167435 1 0 3 0x100083 ttyin getty 72089 95859 0 0 3 0x14200 bored sosplice 82082 371828 79805 0 2 0x10000002 syz-executor 79805 450090 55416 0 3 0x10008a sigsusp ksh 55416 174284 6350 0 3 0x98 kqread sshd-session 6350 211627 59556 0 3 0x92 kqread sshd-session 59556 60671 1 0 3 0x88 kqread sshd 10236 224948 76815 74 3 0x1100092 bpf pflogd 76815 11327 1 0 3 0x80 sbwait pflogd 12540 281187 80082 73 3 0x1100090 kqread syslogd 80082 437078 1 0 3 0x100082 sbwait syslogd 57364 158707 1 0 3 0x100080 kqread resolvd 89390 162593 10186 77 3 0x100092 kqread dhcpleased 32307 409709 10186 77 3 0x100092 kqread dhcpleased 10186 195392 1 0 3 0x80 kqread dhcpleased 30461 263169 0 0 3 0x14200 bored smr 82690 306751 0 0 2 0x14200 zerothread 72036 137940 0 0 3 0x14200 aiodoned aiodoned 7029 287102 0 0 3 0x14200 syncer update 62116 519638 0 0 3 0x14200 cleaner cleaner 6177 375926 0 0 3 0x14200 reaper reaper 57454 72376 0 0 3 0x14200 pgdaemon pagedaemon 13515 89134 0 0 3 0x14200 bored viomb 92557 181968 0 0 3 0x40014200 acpi0 acpi0 84820 101906 0 0 3 0x40014200 idle1 15233 174553 0 0 3 0x14200 bored softnet3 33330 75436 0 0 3 0x14200 bored softnet2 34835 236502 0 0 2 0x14200 softnet1 55712 522928 0 0 3 0x14200 bored softnet0 60199 111926 0 0 3 0x14200 bored systqmp 25270 218271 0 0 3 0x14200 bored systq 1701 491005 0 0 3 0x14200 tmoslp softclockmp 6320 347019 0 0 3 0x40014200 tmoslp softclock 13331 18504 0 0 3 0x40014200 idle0 1 521971 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 83470 (ifconfig) thread 0xffff8000ffff0f80 (261111) exclusive rwlock clonelk r = 0 (0xffffffff837fdb08) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 if_clone_destroy+0x67 sys/net/if.c:-1 #3 ifioctl+0x5c5 sys/net/if.c:-1 #4 sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #6 Xsyscall+0x128 Process 15222 (syz-executor) thread 0xffff8000383f8550 (361259) exclusive rwlock netlock r = 0 (0xffffffff837fdbf0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 bpfwrite+0x313 sys/net/bpf.c:681 #3 spec_write+0x120 sys/kern/spec_vnops.c:302 #4 VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 #5 vn_write+0x1d4 sys/kern/vfs_vnops.c:408 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_writev+0xd8 sys/kern/sys_generic.c:327 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8392d428) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2da sys/kern/kern_synch.c:366 #3 msleep_nsec+0x141 sys/kern/kern_synch.c:219 #4 pool_get+0x431 sys/kern/subr_pool.c:604 #5 m_clget+0x392 sys/kern/uipc_mbuf.c:-1 #6 bpf_movein+0x2d2 sys/net/bpf.c:227 #7 bpfwrite+0x1fa sys/net/bpf.c:664 #8 spec_write+0x120 sys/kern/spec_vnops.c:302 #9 VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 #10 vn_write+0x1d4 sys/kern/vfs_vnops.c:408 #11 dofilewritev+0x23c sys/kern/sys_generic.c:380 #12 sys_writev+0xd8 sys/kern/sys_generic.c:327 #13 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10250 11687K 12083K 166960K 13171 0 pcb 17 13K 13K 166960K 132 0 rtable 139 14K 16K 166960K 515 0 pf 34 17K 67486K 166960K 92 0 ifaddr 30 4K 7K 166960K 75 0 ifgroup 56 2K 2K 166960K 119 0 sysctl 4 1K 9K 166960K 15 0 counters 66 36K 37K 166960K 114 0 ioctlops 0 0K 4K 166960K 1568 0 iov 0 0K 20K 166960K 84 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1528 96K 96K 166960K 2944 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 35 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 24 86K 94K 166960K 1031 0 sigio 0 0K 0K 166960K 21 0 proc 100 140K 152K 166960K 740 0 subproc 108 6K 7K 166960K 324 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 222 0 in_multi 52 3K 7K 166960K 144 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 632 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 274 197K 214K 166960K 10550 0 UVM aobj 82 4K 4K 166960K 86 0 pinsyscall 49 98K 104K 166960K 2256 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 1K 166960K 67 0 NDP 11 0K 2K 166960K 51 0 temp 68 8691K 8757K 166960K 41029 0 kqueue 16 22K 32K 166960K 145 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 204 0 201 3 2 1 3 0 8 0 rtentry 176 157 0 103 6 0 6 6 0 8 0 unpcb 144 474 0 452 6 5 1 6 0 8 0 syncache 336 6 0 6 4 4 0 1 0 8 0 tcpcb 736 404 0 398 10 9 1 7 0 8 0 arp 128 27 0 17 1 0 1 1 0 8 0 inpcb 328 1079 0 1065 14 12 2 7 0 8 0 nd6 144 34 0 22 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 1 0 1 0 8 0 kcovpl 48 36 0 24 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 12 0 12 2 2 0 1 0 8 0 pppxif 1504 1 0 1 1 1 0 1 0 8 0 pffrag 232 8 0 8 1 1 0 1 0 482 0 pffrnode 88 7 0 7 1 1 0 1 0 8 0 pffrent 40 11 0 11 1 1 0 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfstitem 24 51 0 49 1 0 1 1 0 8 0 pfstkey 128 53 0 51 2 0 2 2 0 8 1 pfstate 384 53 0 51 5 1 4 5 0 8 3 pfrule 1344 22 0 17 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 667 0 423 29 4 25 29 0 8 2 art_table 32 669 0 423 4 0 4 4 0 8 0 art_node 16 156 0 110 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 28 0 18 1 0 1 1 0 8 0 shmpl 112 83 0 4 3 0 3 3 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 3108 0 1580 96 0 96 96 0 8 0 ffsino 288 3108 0 1580 111 1 110 110 0 8 0 nchpl 144 4326 0 2606 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 uvmvnodes 80 4354 0 0 89 0 89 89 0 8 0 vnodes 216 4354 0 0 242 0 242 242 0 8 0 namei 1024 15471 0 15471 3 2 1 2 0 8 1 percpumem 16 72 0 24 1 0 1 1 0 8 0 kstatmem 264 64 0 36 3 0 3 3 0 8 0 scsiplug 72 4 0 4 3 3 0 1 0 8 0 scxspl 216 15719 0 15719 10 9 1 8 1 8 1 plimitpl 152 178 0 155 1 0 1 1 0 8 0 sigapl 424 1288 0 1229 8 1 7 7 0 8 0 knotepl 120 556 0 0 17 0 17 17 0 8 0 kqueuepl 224 409 0 399 9 8 1 5 0 8 0 pipepl 336 259 0 225 4 0 4 4 0 8 0 fdescpl 520 1267 0 1229 3 0 3 3 0 8 0 filepl 160 8420 0 8145 20 8 12 20 0 8 0 lockfpl 104 268 0 266 1 0 1 1 0 8 0 lockfspl 48 103 0 101 1 0 1 1 0 8 0 sessionpl 144 47 0 38 1 0 1 1 0 8 0 pgrppl 48 98 0 76 1 0 1 1 0 8 0 ucredpl 104 1365 0 1351 1 0 1 1 0 8 0 zombiepl 144 1236 0 1229 1 0 1 1 0 8 0 processpl 1240 1288 0 1229 5 0 5 5 0 8 0 procpl 656 2587 0 2525 7 1 6 7 0 8 0 srpgc 96 14 0 12 3 2 1 1 0 8 0 sosppl 168 3 0 3 2 2 0 1 0 8 0 sockpl 728 1782 0 1743 27 23 4 20 0 8 0 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 133 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 41 559 20 4 0 4 4 0 8 1 mtagpl 96 154 0 0 4 0 4 4 0 8 0 mbufpl 256 2572 0 0 161 0 161 161 0 8 0 bufpl 280 7159 0 1017 439 0 439 439 0 8 0 anonpl 32 10733 0 0 87 0 87 87 0 246 0 amapchunkpl 152 33320 0 32723 38 8 30 32 0 158 5 amappl16 200 3895 0 3865 44 31 13 22 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 123 0 111 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 2006 0 1969 3 1 2 2 0 8 0 amappl11 160 51 0 36 1 0 1 1 0 8 0 amappl10 152 27 0 27 1 1 0 1 0 8 0 amappl9 144 266 0 266 1 1 0 1 0 8 0 amappl8 136 22 0 19 1 0 1 1 0 8 0 amappl7 128 165 0 153 1 0 1 1 0 8 0 amappl6 120 228 0 215 1 0 1 1 0 8 0 amappl5 112 153 0 139 1 0 1 1 0 8 0 amappl4 104 340 0 320 1 0 1 1 0 8 0 amappl3 96 6748 0 6629 4 0 4 4 0 8 0 amappl2 88 719 0 644 2 0 2 2 0 8 0 amappl1 80 12261 0 11632 15 1 14 14 0 8 0 amappl 88 9637 0 9443 5 0 5 5 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 7 0 7 2 2 0 1 0 8 0 dma128 128 256 0 256 4 4 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 85 0 4 2 0 2 2 0 8 0 uaddrrnd 24 1267 0 1229 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1267 0 1229 1 0 1 1 0 8 0 vmmpekpl 168 11313 0 11239 4 0 4 4 0 8 0 vmmpepl 168 85596 0 83473 114 13 101 105 0 357 4 vmsppl 480 1266 0 1229 5 0 5 5 0 8 0 rwobjpl 72 28275 0 22736 102 1 101 101 0 8 0 pdppl 4096 2541 0 2458 125 38 87 87 0 8 4 pvpl 32 18393 0 0 150 1 149 149 0 265 0 pmappl 256 1266 0 1229 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 580 0 62 15 0 15 15 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8381dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff8392d220) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8392d220) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8392d220) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8392d220) at __mp_lock+0x192 sys/kern/kern_lock.c:165 syscall(ffff80002a2fab30) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2fab30) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ad53c7771c0, count: -10 ddb{0}> machine ddbcpu 1