login: kernel: protection fault trap, code=0 Stopped at pfi_ifhead_RB_REMOVE+0x58: 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(ffffffff828ca230,ffff800000aa2d00) at pfi_ifhead_RB_REMOVE+0x58 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af1500) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af1500) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000af4000,ffff800000af1500) at if_delgroup+0x1bc sys/net/if.c:2666 if_detach(ffff800000af4000) at if_detach+0x1b0 sys/net/if.c:1039 tun_clone_destroy(ffff800000af4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 ifioctl(fffffd806cdab650,80206979,ffff800020ef0a70,ffff800020ead3d8) at ifioctl+0x3ea sys/net/if.c:1818 soo_ioctl(fffffd806d01bb58,80206979,ffff800020ef0a70,ffff800020ead3d8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ead3d8,ffff800020ef0b88,ffff800020ef0bd0) at sys_ioctl+0x4a5 syscall(ffff800020ef0c50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ef0c50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd3ab0, count: -10 ddb{1}> show registers rdi 0xffffffff828ca230 pfi_ifs rsi 0xffff800000aa2d00 rbp 0xffff800020ef07f0 rbx 0xdead4110dead4110 rdx 0xffffffff82745f98 ifg_head+0x8 rcx 0 rax 0xffff800000aa2d10 r8 0x101010101010101 r9 0x8080808080808080 r10 0x5a815e8a5f855b31 r11 0xacc23cf7ed4ff53f r12 0xdead4110dead4110 r13 0xffff80000002aca0 r14 0xffff800000aa2d00 r15 0xffffffff828ca230 pfi_ifs rip 0xffffffff8125b088 pfi_ifhead_RB_REMOVE+0x58 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff800020ef0790 ss 0x10 pfi_ifhead_RB_REMOVE+0x58: movq 0x10(%r12),%rbx ddb{1}> show proc PROC (syz-executor.1) pid=410413 stat=onproc flags process=0 proc=0 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020eacc70,0xffffffff828d38a0 process=0xffff800020df0fd0 user=0xffff800020eeb000, vmspace=0xfffffd807efff5c0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *18421 410413 47513 0 7 0 syz-executor.1 98393 387629 78420 0 3 0 tqbar syz-executor.0 47513 187005 65766 0 3 0x82 nanosleep syz-executor.1 78420 306170 65766 0 3 0x82 nanosleep syz-executor.0 65766 75574 15413 0 3 0x82 thrsleep syz-execprog 65766 479551 15413 0 3 0x4000082 thrsleep syz-execprog 65766 473606 15413 0 3 0x4000082 thrsleep syz-execprog 65766 469009 15413 0 3 0x4000082 thrsleep syz-execprog 65766 390858 15413 0 3 0x4000082 kqread syz-execprog 65766 144275 15413 0 3 0x4000082 thrsleep syz-execprog 65766 212673 15413 0 3 0x4000082 thrsleep syz-execprog 15413 519588 50564 0 3 0x10008a pause ksh 50564 119333 49350 0 3 0x92 select sshd 72929 147362 1 0 3 0x100083 ttyin getty 49350 7835 1 0 3 0x80 select sshd 483 141243 24737 74 3 0x100092 bpf pflogd 24737 474819 1 0 3 0x80 netio pflogd 60967 193649 91749 73 3 0x100090 kqread syslogd 91749 399003 1 0 3 0x100082 netio syslogd 95474 97418 1 77 7 0x100090 dhclient 98652 344845 1 0 3 0x80 poll dhclient 56264 265132 0 0 3 0x14200 bored smr 9447 172370 0 0 3 0x14200 pgzero zerothread 9249 438578 0 0 3 0x14200 aiodoned aiodoned 70980 135594 0 0 3 0x14200 syncer update 37137 333776 0 0 3 0x14200 cleaner cleaner 34468 296581 0 0 3 0x14200 reaper reaper 17902 395534 0 0 3 0x14200 pgdaemon pagedaemon 65382 11828 0 0 3 0x14200 bored crynlk 25422 270918 0 0 3 0x14200 bored crypto 88842 173877 0 0 3 0x40014200 acpi0 acpi0 54027 459751 0 0 3 0x40014200 idle1 11417 375238 0 0 2 0x14200 softnet 30942 463755 0 0 2 0x14200 systqmp 64042 287050 0 0 3 0x14200 bored systq 77438 243853 0 0 3 0x40014200 bored softclock 44096 372632 0 0 3 0x40014200 idle0 1 345772 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 18421 (syz-executor.1) thread 0xffff800020ead3d8 (410413) exclusive rwlock netlock r = 0 (0xffffffff82746010) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_detach+0x70 sys/net/if.c:1008 #2 tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 #3 ifioctl+0x3ea sys/net/if.c:1818 #4 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #5 sys_ioctl+0x4a5 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828e2178) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 #2 mi_switch+0x392 sys/kern/sched_bsd.c:435 #3 sleep_finish+0x113 sys/kern/kern_synch.c:418 #4 cond_wait+0x76 sys/kern/kern_synch.c:907 #5 smr_barrier_impl+0xf9 sys/kern/kern_smr.c:271 #6 tun_clone_destroy+0x136 sys/net/if_tun.c:311 #7 ifioctl+0x3ea sys/net/if.c:1818 #8 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #9 sys_ioctl+0x4a5 #10 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #11 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9465 6396K 6396K 78643K 10560 0 pcb 13 8K 8K 78643K 13 0 rtable 61 2K 3K 78643K 203 0 ifaddr 32 8K 10K 78643K 47 0 counters 41 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1469 0 mount 1 1K 1K 78643K 1 0 vnodes 1181 74K 75K 78643K 1188 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 36 0 proc 59 63K 95K 78643K 438 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 2K 78643K 33 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 19 95K 95K 78643K 19 0 exec 0 0K 1K 78643K 210 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 89 20K 21K 78643K 1009 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 5 0K 0K 78643K 10 0 temp 26 3857K 3921K 78643K 1979 0 kqueue 3 4K 4K 78643K 3 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 6 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 19 0 17 1 0 1 1 0 8 0 rtentry 112 45 0 23 2 0 2 2 0 8 1 unpcb 120 31 0 19 1 0 1 1 0 8 0 syncache 272 5 0 5 2 1 1 1 0 8 1 tcpcb 592 8 0 5 1 0 1 1 0 8 0 inpcb 296 39 0 31 1 0 1 1 0 8 0 nd6 48 6 0 6 1 0 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 12 0 0 1 0 1 1 0 8 0 pfstkey 112 12 0 0 1 0 1 1 0 8 0 pfstate 328 12 0 0 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1427 0 24 88 0 88 88 0 8 0 ffsino 272 1427 0 24 94 0 94 94 0 8 0 nchpl 144 1648 0 38 61 1 60 60 0 8 0 uvmvnodes 72 1437 0 0 27 0 27 27 0 8 0 vnodes 208 1437 0 0 76 0 76 76 0 8 0 namei 1024 4351 0 4351 2 1 1 1 0 8 1 percpumem 16 32 0 1 1 0 1 1 0 8 0 scxspl 200 4402 0 4402 2 1 1 2 0 8 1 plimitpl 152 16 0 8 1 0 1 1 0 8 0 sigapl 424 255 0 223 4 0 4 4 0 8 0 knotepl 112 60 0 42 1 0 1 1 0 8 0 kqueuepl 152 2 0 0 1 0 1 1 0 8 0 pipepl 304 82 0 71 2 1 1 1 0 8 0 fdescpl 496 240 0 223 3 0 3 3 0 8 0 filepl 152 1147 0 1074 3 0 3 3 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 120 20 0 9 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 62 0 53 1 0 1 1 0 8 0 zombiepl 144 223 0 223 2 1 1 1 0 8 1 processpl 1008 255 0 223 5 0 5 5 0 8 1 procpl 632 261 0 223 4 0 4 4 0 8 0 srpgc 72 4 0 4 1 0 1 1 0 8 1 sockpl 400 89 0 67 3 0 3 3 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 56 0 0 7 0 7 7 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 135 0 0 7 0 7 7 0 8 0 bufpl 280 2997 0 127 205 0 205 205 0 8 0 anonpl 16 22902 0 21114 14 2 12 12 0 124 3 amapchunkpl 152 1043 0 952 6 0 6 6 0 158 1 amappl16 192 154 0 110 3 0 3 3 0 8 0 amappl15 184 9 0 6 1 0 1 1 0 8 0 amappl14 176 2 0 2 1 0 1 1 0 8 1 amappl13 168 31 0 26 2 1 1 1 0 8 0 amappl12 160 24 0 22 1 0 1 1 0 8 0 amappl11 152 59 0 43 1 0 1 1 0 8 0 amappl10 144 29 0 24 1 0 1 1 0 8 0 amappl9 136 209 0 206 1 0 1 1 0 8 0 amappl8 128 299 0 283 1 0 1 1 0 8 0 amappl7 120 115 0 105 1 0 1 1 0 8 0 amappl6 112 34 0 28 1 0 1 1 0 8 0 amappl5 104 132 0 118 1 0 1 1 0 8 0 amappl4 96 504 0 480 1 0 1 1 0 8 0 amappl3 88 125 0 117 1 0 1 1 0 8 0 amappl2 80 913 0 849 2 0 2 2 0 8 0 amappl1 72 16000 0 15552 24 6 18 18 0 8 8 amappl 80 508 0 473 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 240 0 223 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 240 0 223 1 0 1 1 0 8 0 vmmpekpl 168 6487 0 6461 2 0 2 2 0 8 0 vmmpepl 168 34342 0 33291 86 12 74 74 0 357 26 vmsppl 368 239 0 223 2 0 2 2 0 8 0 pdppl 4096 487 0 446 6 0 6 6 0 8 0 pvpl 32 116771 0 112482 107 3 104 104 0 265 66 pmappl 232 239 0 223 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 232 0 5 7 0 7 7 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82728ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_cmp4(ffffffff828e1f70,ffffffff828e1f70) at __sanitizer_cov_trace_cmp4+0x6f sys/dev/kcov.c:165 __mp_acquire_count(ffffffff828e1f70,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e17c80,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e17c80,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e17c80,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828d9024,118,ffffffff8246ca90,41df49) at tsleep+0x1cc sys/kern/kern_synch.c:155 doppoll(ffff800020dd7640,7f7ffffc7590,3,ffff800020e17e18,0,ffff800020e17ed0) at doppoll+0x57e sys/kern/sys_generic.c:968 sys_poll(ffff800020dd7640,ffff800020e17e80,ffff800020e17ed0) at sys_poll+0xa6 syscall(ffff800020e17f50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e17f50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc7570, count: -13 ddb{0}> machine ddbcpu 1 Stopped at pfi_ifhead_RB_REMOVE+0x58: movq 0x10(%r12),%rbx ddb{1}> trace pfi_ifhead_RB_REMOVE(ffffffff828ca230,ffff800000aa2d00) at pfi_ifhead_RB_REMOVE+0x58 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af1500) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af1500) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000af4000,ffff800000af1500) at if_delgroup+0x1bc sys/net/if.c:2666 if_detach(ffff800000af4000) at if_detach+0x1b0 sys/net/if.c:1039 tun_clone_destroy(ffff800000af4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 ifioctl(fffffd806cdab650,80206979,ffff800020ef0a70,ffff800020ead3d8) at ifioctl+0x3ea sys/net/if.c:1818 soo_ioctl(fffffd806d01bb58,80206979,ffff800020ef0a70,ffff800020ead3d8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020ead3d8,ffff800020ef0b88,ffff800020ef0bd0) at sys_ioctl+0x4a5 syscall(ffff800020ef0c50) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ef0c50) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd3ab0, count: -10 ddb{1}>