kernel: protection fault trap, code=0 Stopped at pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace pfi_ifhead_RB_REMOVE(ffffffff8291f0b0,ffff800000b65600) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b20300) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b20300) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b13000,ffff800000b20300) at if_delgroup+0x193 sys/net/if.c:2700 if_detach(ffff800000b13000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b13000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000245738f0) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d01,7) at tun_dev_close+0x140 sys/net/if_tun.c:479 spec_close(ffff8000245739c0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ee26168,7,fffffd807f7b79c0,ffff8000244f6d20) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd80684c1c98,ffff8000244f6d20) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80684c1c98,ffff8000244f6d20) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80684c1c98,ffff8000244f6d20) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80684c1c98,ffff8000244f6d20) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000244f6d20) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000244f6d20,0,0,1) at exit1+0x335 sys/kern/kern_exit.c:200 sys_exit(ffff8000244f6d20,ffff800024573c50,ffff800024573ca0) at sys_exit+0x16 sys/kern/kern_exit.c:96 syscall(ffff800024573d20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024573d20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0460, count: -17 ddb{1}> show registers rdi 0xffffffff8291f0b0 pfi_ifs rsi 0xffff800000b65600 rbp 0xffff800024573750 rbx 0xdeafbeaddeafbead rdx 0 rcx 0xffff800000b20400 rax 0xffff800000b65610 r8 0xf8 r9 0x8080808080808080 r10 0xc9002d51ba19ac7a r11 0xf52a59cab7c8ddbc r12 0xdeafbeaddeafbead r13 0xffff800000ba59a0 r14 0xffff800000b65600 r15 0xffffffff8291f0b0 pfi_ifs rip 0xffffffff8171dcd0 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000245736f0 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> show proc PROC (syz-executor.1) pid=406039 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000244f7ce0,0xffffffff8291eae8 process=0xffff8000244dc450 user=0xffff80002456e000, vmspace=0xfffffd8008496b80 estcpu=31, cpticks=1, pctcpu=0.6 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 19972 426933 0 0 3 0x14280 nfsidl nfsio 66419 24515 0 0 3 0x14280 nfsidl nfsio 70938 93147 0 0 3 0x14280 nfsidl nfsio 94525 326813 0 0 3 0x14280 nfsidl nfsio 4528 483051 0 0 3 0x14280 nfsidl nfsio 92072 512940 0 0 3 0x14280 nfsidl nfsio 3012 3537 0 0 3 0x14280 nfsidl nfsio 75101 66107 0 0 3 0x14280 nfsidl nfsio 29774 486326 0 0 3 0x14280 nfsidl nfsio 90944 482938 0 0 3 0x14280 nfsidl nfsio 18948 46899 0 0 3 0x14280 nfsidl nfsio 90688 129099 0 0 3 0x14280 nfsidl nfsio 45120 251783 0 0 3 0x14280 nfsidl nfsio 29382 466869 0 0 3 0x14280 nfsidl nfsio 33272 466589 0 0 3 0x14280 nfsidl nfsio 12070 63841 0 0 3 0x14280 nfsidl nfsio 70079 320371 0 0 3 0x14280 nfsidl nfsio 25542 333180 0 0 3 0x14280 nfsidl nfsio 68421 70470 0 0 3 0x14280 nfsidl nfsio 70474 414450 0 0 3 0x14280 nfsidl nfsio 69977 468841 56878 0 3 0x2 biowait syz-executor.0 17523 279795 0 0 3 0x14200 bored sosplice 56878 449039 82565 0 3 0x82 thrsleep syz-fuzzer 56878 353219 82565 0 2 0x4000002 syz-fuzzer 56878 283296 82565 0 3 0x4000082 thrsleep syz-fuzzer 56878 474380 82565 0 3 0x4000082 thrsleep syz-fuzzer 56878 488337 82565 0 3 0x4000082 thrsleep syz-fuzzer 56878 270598 82565 0 3 0x4000082 thrsleep syz-fuzzer 56878 166166 82565 0 7 0x4000002 syz-fuzzer 56878 380872 82565 0 3 0x4000082 kqread syz-fuzzer 82565 243390 18655 0 3 0x10008a sigsusp ksh 18655 415411 97257 0 3 0x92 select sshd 29020 392178 1 0 3 0x100083 ttyin getty 97257 359460 1 0 3 0x80 select sshd 9522 134048 59014 74 3 0x100092 bpf pflogd 59014 148484 1 0 3 0x80 netio pflogd 93721 325333 74903 73 3 0x100090 kqread syslogd 74903 312206 1 0 3 0x100082 netio syslogd 34418 7936 1 77 2 0x100090 dhclient 11682 440085 1 0 3 0x80 poll dhclient 78489 379653 0 0 3 0x14200 bored smr 87951 163544 0 0 3 0x14200 pgzero zerothread 10649 394017 0 0 3 0x14200 aiodoned aiodoned 29780 326916 0 0 3 0x14200 syncer update 67476 98639 0 0 3 0x14200 cleaner cleaner 73206 276945 0 0 3 0x14200 reaper reaper 93156 433260 0 0 3 0x14200 pgdaemon pagedaemon 44076 505725 0 0 3 0x14200 bored crynlk 58798 18272 0 0 3 0x14200 bored crypto 49494 16868 0 0 3 0x14200 bored viomb 38694 144419 0 0 3 0x40014200 acpi0 acpi0 75847 426963 0 0 3 0x40014200 idle1 25778 374746 0 0 3 0x14200 bored softnet 3498 478654 0 0 2 0x14200 systqmp 72622 409253 0 0 3 0x14200 bored systq 19799 4537 0 0 3 0x40014200 bored softclock 12176 128821 0 0 3 0x40014200 idle0 1 238495 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 69977 (syz-executor.0) thread 0xffff80002123c7e0 (468841) exclusive rrwlock inode r = 0 (0xfffffd807a2bda30) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x443 sys/kern/kern_rwlock.c:312 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:463 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x135 sys/ufs/ffs/ffs_vfsops.c:1350 #5 ffs_inode_alloc+0x1e1 sys/ufs/ffs/ffs_alloc.c:394 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:459 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3064 #9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806da25e78) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x443 sys/kern/kern_rwlock.c:312 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:463 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:614 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x5f7 sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3049 #8 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9530 6435K 7078K 78643K 13585 0 pcb 13 8K 8K 78643K 175 0 rtable 99 6K 7K 78643K 505 0 ifaddr 73 15K 16K 78643K 213 0 counters 44 34K 34K 78643K 102 0 ioctlops 0 0K 4K 78643K 1696 0 iov 0 0K 16K 78643K 62 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 2371 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 26 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 247 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 3473 0 sigio 0 0K 0K 78643K 10 0 proc 64 63K 95K 78643K 622 0 subproc 23 1K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 164 0 in_multi 22 1K 2K 78643K 95 0 ether_multi 1 0K 0K 78643K 17 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 473 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 159 92K 92K 78643K 8826 0 UVM aobj 44 2K 2K 78643K 44 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 165 0 NDP 12 0K 0K 78643K 49 0 temp 136 3985K 4049K 78643K 13649 0 kqueue 3 4K 10K 78643K 183 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 arp 64 10 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 73 0 71 1 0 1 1 0 8 0 rtentry 112 67 0 34 2 0 2 2 0 8 0 unpcb 120 593 0 582 1 0 1 1 0 8 0 syncache 296 52 0 52 6 6 0 1 0 8 0 tcpqe 32 202 0 202 4 4 0 1 0 8 0 tcpcb 736 519 0 507 7 4 3 4 0 8 0 inpcb 304 1317 0 1306 3 1 2 2 0 8 0 nd6 48 12 0 9 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 1 0 1 0 8 0 kcovpl 48 4 0 3 1 0 1 1 0 8 0 ppxss 1128 11 0 11 2 2 0 1 0 8 0 pffrag 232 4 0 4 1 1 0 1 0 482 0 pffrnode 88 4 0 4 1 1 0 1 0 8 0 pffrent 40 8 0 8 1 1 0 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 pfrktable 1344 7 0 1 1 0 1 1 0 8 0 pfstitem 24 21 0 19 1 0 1 1 0 8 0 pfstkey 112 21 0 19 1 0 1 1 0 8 0 pfstate 320 21 0 19 2 1 1 2 0 8 0 pfrule 1360 168 0 122 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 282 0 91 12 0 12 12 0 8 0 art_table 32 283 0 91 2 0 2 2 0 8 0 art_node 16 66 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 9 2 1 1 1 0 8 0 semupl 112 18 0 18 1 1 0 1 0 8 0 semapl 112 245 0 235 1 0 1 1 0 8 0 shmpl 112 41 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5692 0 4289 89 0 89 89 0 8 0 ffsino 272 5692 0 4289 95 0 95 95 0 8 0 nchpl 144 9723 0 8151 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 24369 0 24368 1 0 1 1 0 8 0 percpumem 16 62 0 29 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 22 0 0 1 0 1 1 0 8 0 scxspl 216 29015 0 29014 9 8 1 8 0 8 0 plimitpl 152 178 0 170 1 0 1 1 0 8 0 sigapl 424 3704 0 3652 7 0 7 7 0 8 0 futexpl 56 23019 0 23019 1 0 1 1 0 8 1 knotepl 112 268 0 254 1 0 1 1 0 8 0 kqueuepl 168 1587 0 1585 1 0 1 1 0 8 0 pipepl 336 127 0 119 5 3 2 2 0 8 1 fdescpl 496 3667 0 3652 3 0 3 3 0 8 0 filepl 152 11686 0 11599 5 0 5 5 0 8 0 lockfpl 104 403 0 402 1 0 1 1 0 8 0 lockfspl 48 150 0 149 1 0 1 1 0 8 0 sessionpl 144 20 0 9 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 1476 0 1467 1 0 1 1 0 8 0 zombiepl 144 3653 0 3652 1 0 1 1 0 8 0 processpl 1080 3704 0 3652 4 0 4 4 0 8 0 procpl 672 7932 0 7873 7 1 6 6 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 5 0 5 1 1 0 1 0 8 0 sockpl 432 1988 0 1964 6 2 4 5 0 8 0 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 12 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 235 0 0 19 0 19 19 0 8 0 mtagpl 96 135 0 0 4 0 4 4 0 8 0 mbufpl 256 459 0 0 27 0 27 27 0 8 0 bufpl 280 7303 0 1054 447 0 447 447 0 8 0 anonpl 24 276032 0 269691 90 45 45 88 0 186 0 amapchunkpl 152 13269 0 13066 10 1 9 9 0 158 0 amappl16 200 12188 0 11927 43 28 15 38 0 8 0 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl14 184 1760 0 1754 1 0 1 1 0 8 0 amappl13 176 57 0 55 1 0 1 1 0 8 0 amappl12 168 21 0 17 1 0 1 1 0 8 0 amappl11 160 757 0 739 1 0 1 1 0 8 0 amappl10 152 1019 0 1013 1 0 1 1 0 8 0 amappl9 144 276 0 275 1 0 1 1 0 8 0 amappl8 136 224 0 159 3 0 3 3 0 8 0 amappl7 128 271 0 263 1 0 1 1 0 8 0 amappl6 120 1069 0 1055 1 0 1 1 0 8 0 amappl5 112 3847 0 3827 1 0 1 1 0 8 0 amappl4 104 984 0 958 1 0 1 1 0 8 0 amappl3 96 206 0 198 1 0 1 1 0 8 0 amappl2 88 30092 0 30024 3 1 2 3 0 8 0 amappl1 80 111099 0 110627 29 18 11 21 0 8 0 amappl 88 8211 0 8146 2 0 2 2 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 64 43 0 0 1 0 1 1 0 8 0 uaddrrnd 24 3672 0 3652 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3672 0 3652 1 0 1 1 0 8 0 vmmpekpl 168 18755 0 18720 2 0 2 2 0 8 0 vmmpepl 168 461602 0 460158 109 36 73 90 0 357 0 vmsppl 368 3671 0 3652 2 0 2 2 0 8 0 rwobjpl 56 97373 0 96381 31 16 15 21 0 8 0 pdppl 4096 7351 0 7309 62 16 46 46 0 8 4 pvpl 32 1368600 0 1359312 184 94 90 147 0 265 3 pmappl 232 3671 0 3652 3 1 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 338 0 26 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82760ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 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(ffffffff828f1530) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828f1530) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800021278e80,ffff80000006a400) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x18f __mp_lock(ffffffff828f1530) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828f1530) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff800021279050) at syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800021279050) at syscall+0x3fd sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc000345e58, count: -9 ddb{0}> machine ddbcpu 1 Stopped at pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> trace pfi_ifhead_RB_REMOVE(ffffffff8291f0b0,ffff800000b65600) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b20300) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b20300) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b13000,ffff800000b20300) at if_delgroup+0x193 sys/net/if.c:2700 if_detach(ffff800000b13000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b13000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000245738f0) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d01,7) at tun_dev_close+0x140 sys/net/if_tun.c:479 spec_close(ffff8000245739c0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ee26168,7,fffffd807f7b79c0,ffff8000244f6d20) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd80684c1c98,ffff8000244f6d20) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80684c1c98,ffff8000244f6d20) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80684c1c98,ffff8000244f6d20) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80684c1c98,ffff8000244f6d20) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000244f6d20) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000244f6d20,0,0,1) at exit1+0x335 sys/kern/kern_exit.c:200 sys_exit(ffff8000244f6d20,ffff800024573c50,ffff800024573ca0) at sys_exit+0x16 sys/kern/kern_exit.c:96 syscall(ffff800024573d20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024573d20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0460, count: -17