kernel: protection fault trap, code=0 Stopped at bpfdetach+0x70: movq 0(%r15),%r12 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace bpfdetach(ffff800010fda000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800010fda000) at if_detach+0x1bb sys/net/if.c:1222 tun_clone_destroy(ffff800010fda000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff800037ff4a20) at if_clone_destroy+0x205 sys/net/if.c:1412 ifioctl(ffff80000163c368,80206979,ffff800037ff4a20,ffff80003c00afb8) at ifioctl+0x59d sys/net/if.c:2089 sys_ioctl(ffff80003c00afb8,ffff800037ff4c00,ffff800037ff4b50) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff800037ff4c00) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037ff4c00) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc5dda7d0510, count: -8 ddb{0}> show registers rdi 0xffff80002abd1000 rsi 0x146c7 acpi_pdirpa+0x538 rbp 0xffff800037ff4840 rbx 0x80206979 __kernel_virt_to_phys+0x206979 rdx 0xffff80002abd1000 rcx 0x146c6 acpi_pdirpa+0x537 rax 0xffffffff82c1db79 bpfdetach+0xb9 r8 0 r9 0xffffffffffffffff r10 0x3c85da84f3de9749 r11 0x5b87d5261b0ea2c3 r12 0xdead0002dead4110 r13 0xffff800010fda600 r14 0xffff800010fda000 r15 0xdead0002dead4110 rip 0xffffffff82c1db30 bpfdetach+0x70 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800037ff4810 ss 0 bpfdetach+0x70: movq 0(%r15),%r12 ddb{0}> show proc PROC (syz-executor) tid=258511 pid=72270 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c00a028,0xffff80003c00a568 process=0xffff8000347e5d08 user=0xffff800037fef000, vmspace=0xfffffd806cb2f5d0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 9232 331225 70688 0 2 0 syz-executor 9232 329305 70688 0 2 0x4000000 syz-executor 9232 362639 70688 0 2 0x4000000 syz-executor 72270 460899 69503 0 3 0x80 nanoslp syz-executor *72270 258511 69503 0 7 0x4000000 syz-executor 72270 434817 69503 0 3 0x4000080 kqsel syz-executor 20188 184723 22282 0 2 0 syz-executor 20188 106330 22282 0 3 0x4000080 fsleep syz-executor 13753 137981 10030 0 2 0 syz-executor 13753 34910 10030 0 3 0x4000080 fsleep syz-executor 99426 291752 52522 0 2 0 syz-executor 99426 277764 52522 0 2 0x4000000 syz-executor 46670 495679 18970 0 2 0x1 syz-executor 46670 404327 18970 0 2 0x4000000 syz-executor 46670 108168 18970 0 2 0x4000000 syz-executor 46524 234591 49386 0 3 0x80 nanoslp syz-executor 46524 493655 49386 0 3 0x4000080 ttyin syz-executor 46524 56494 49386 0 3 0x4000080 fsleep syz-executor 46524 203312 49386 0 3 0x4000080 fsleep syz-executor 22674 339950 0 0 3 0x14280 nfsidl nfsio 64760 397351 0 0 3 0x14280 nfsidl nfsio 16110 159274 0 0 3 0x14280 nfsidl nfsio 40113 131941 0 0 3 0x14280 nfsidl nfsio 69503 244720 37326 0 3 0x82 nanoslp syz-executor 93476 9729 0 0 3 0x14200 acct acct 22282 237731 37326 0 3 0x82 nanoslp syz-executor 52522 321088 37326 0 3 0x82 nanoslp syz-executor 10030 332811 37326 0 3 0x82 nanoslp syz-executor 70688 264744 37326 0 3 0x82 nanoslp syz-executor 49386 231493 37326 0 3 0x82 nanoslp syz-executor 18970 339517 37326 0 3 0x82 nanoslp syz-executor 7972 501153 37326 0 2 0x2 syz-executor 37326 364610 3521 0 3 0x82 kqread syz-executor 3521 356397 39838 0 3 0x10008a sigsusp ksh 39838 273579 66984 0 3 0x98 kqread sshd-session 66984 55371 91181 0 3 0x92 kqread sshd-session 57266 78733 1 0 3 0x100083 ttyopn getty 91181 245086 1 0 3 0x88 kqread sshd 34929 474588 31285 74 3 0x1100092 bpf pflogd 31285 494402 1 0 3 0x80 sbwait pflogd 85989 253336 59680 73 3 0x1100090 kqread syslogd 59680 378473 1 0 3 0x100082 sbwait syslogd 71956 38253 1 0 3 0x100080 kqread resolvd 77953 302814 20644 77 3 0x100092 kqread dhcpleased 65245 448804 20644 77 3 0x100092 kqread dhcpleased 20644 177021 1 0 3 0x80 kqread dhcpleased 57548 151950 0 0 3 0x14200 bored smr 65482 281207 0 0 2 0x14200 zerothread 38743 183123 0 0 3 0x14200 aiodoned aiodoned 70903 477004 0 0 3 0x14200 syncer update 25084 302396 0 0 3 0x14200 cleaner cleaner 72127 476448 0 0 3 0x14200 reaper reaper 79665 352659 0 0 3 0x14200 pgdaemon pagedaemon 58347 287013 0 0 3 0x14200 bored viomb 24963 263781 0 0 3 0x40014200 acpi0 acpi0 39703 500810 0 0 7 0x40014200 idle1 97104 166604 0 0 3 0x14200 bored softnet1 63216 471708 0 0 3 0x14200 bored softnet0 51791 300117 0 0 3 0x14200 smrbar systqmp 78452 512440 0 0 2 0x14200 systq 24430 358404 0 0 3 0x14200 tmoslp softclockmp 38271 423927 0 0 3 0x40014200 tmoslp softclock 39828 36374 0 0 3 0x40014200 idle0 1 484948 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 9232 (syz-executor) thread 0xffff80003c00bcb0 (362639) exclusive rwlock vmmaplk r = 0 (0xfffffd806cb2f8b8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 Process 72270 (syz-executor) thread 0xffff80003c00afb8 (258511) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8395f9b0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #3 rw_do_enter_write+0x1dc sys/kern/kern_rwlock.c:298 #4 lf_purgelocks+0x2f sys/kern/vfs_lockf.c:731 #5 vgonel+0x47e sys/kern/vfs_subr.c:1216 #6 vop_generic_revoke+0x3ea sys/kern/vfs_default.c:124 #7 VOP_REVOKE+0x65 sys/kern/vfs_vops.c:291 #8 vdevgone+0x17b sys/kern/vfs_subr.c:-1 #9 bpfsdetach+0x155 sys/net/bpf.c:1794 #10 bpfdetach+0xa6 sys/net/bpf.c:-1 #11 if_detach+0x1bb sys/net/if.c:1222 #12 tun_clone_destroy+0x2ce sys/net/if_tun.c:340 #13 if_clone_destroy+0x205 sys/net/if.c:1412 #14 ifioctl+0x59d sys/net/if.c:2089 #15 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #16 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #16 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #17 Xsyscall+0x128 exclusive rwlock clonelk r = 0 (0xffffffff838070e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 if_clone_destroy+0x93 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2089 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #6 Xsyscall+0x128 Process 7972 (syz-executor) thread 0xffff8000ffffd9f8 (501153) exclusive rrwlock inode r = 0 (0xfffffd806bf5e6a8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #13 Xsyscall+0x128 Process 51791 (systqmp) thread 0xffff8000ffffe7c8 (300117) shared rwlock systqmp r = 0 (0xffffffff837cd398) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10236 11308K 12501K 166960K 13067 0 pcb 17 15K 17K 166960K 179 0 rtable 217 8K 9K 166960K 478 0 pf 38 18K 67486K 166960K 127 0 ifaddr 40 7K 7K 166960K 86 0 ifgroup 59 2K 3K 166960K 140 0 sysctl 4 1K 9K 166960K 11 0 counters 68 36K 37K 166960K 222 0 ioctlops 0 0K 4K 166960K 1682 0 iov 0 0K 16K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1461 92K 93K 166960K 2170 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 17 0 dirhash 12 2K 3K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 697 0 sigio 0 0K 0K 166960K 18 0 proc 72 115K 164K 166960K 603 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 62 0 in_multi 88 6K 7K 166960K 144 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 438 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 242 151K 166K 166960K 8379 0 UVM aobj 45 6K 6K 166960K 50 0 pinsyscall 42 84K 104K 166960K 1887 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 37 0 NDP 12 0K 2K 166960K 55 0 temp 82 8676K 8748K 166960K 39792 0 kqueue 15 24K 30K 166960K 128 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 85 0 82 1 0 1 1 0 8 0 rtentry 176 145 0 53 5 0 5 5 0 8 0 unpcb 144 365 0 346 2 1 1 2 0 8 0 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 736 266 0 259 8 6 2 7 0 8 1 arp 136 22 0 6 1 0 1 1 0 8 0 inpcb 328 714 0 704 11 9 2 10 0 8 0 nd6 152 28 0 6 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 1 0 1 0 8 0 ppxss 1192 65 0 65 2 1 1 1 0 8 1 pppxif 1504 6 0 6 2 1 1 1 0 8 1 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pffrag 232 9 0 2 1 0 1 1 0 482 0 pffrnode 88 7 0 1 1 0 1 1 0 8 0 pffrent 40 12 0 5 1 0 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 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 3 0 1 2 1 1 1 0 8 0 pfstitem 24 50 0 11 1 0 1 1 0 8 0 pfstkey 128 51 0 12 2 0 2 2 0 8 0 pfstate 448 50 0 12 6 0 6 6 0 8 0 pfrule 1344 24 0 19 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 597 0 217 31 7 24 31 0 8 0 art_table 40 599 0 217 5 0 5 5 0 8 0 art_node 32 145 0 61 1 0 1 1 0 8 0 sysvmsgpl 40 46 0 6 1 0 1 1 0 8 0 semapl 112 13 0 5 1 0 1 1 0 8 0 shmpl 112 44 0 4 2 0 2 2 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 2694 0 1189 96 0 96 96 0 8 0 ffsino 296 2694 0 1189 118 1 117 118 0 8 0 nchpl 144 3633 0 1928 64 0 64 64 0 8 0 rtmask 32 7 0 7 2 2 0 1 0 8 0 vnodes 216 3334 0 0 186 0 186 186 0 8 0 namei 1024 12188 0 12188 2 1 1 2 0 8 1 percpumem 16 126 0 77 1 0 1 1 0 8 0 vcpupl 3968 2 0 0 1 0 1 1 0 8 0 vmpool 840 3 0 1 1 0 1 1 0 8 0 kstatmem 264 76 0 50 3 0 3 3 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 15346 0 15346 11 10 1 8 1 8 1 plimitpl 152 273 0 255 1 0 1 1 0 8 0 sigapl 424 1019 0 967 7 1 6 7 0 8 0 knotepl 120 318 0 0 10 0 10 10 0 8 0 kqueuepl 224 283 0 271 5 4 1 5 0 8 0 pipepl 344 163 0 136 3 0 3 3 0 8 0 fdescpl 528 998 0 967 3 0 3 3 0 8 0 filepl 160 5431 0 5207 15 4 11 14 0 8 1 lockfpl 104 361 0 357 2 1 1 2 0 8 0 lockfspl 48 157 0 153 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 39 0 22 1 0 1 1 0 8 0 ucredpl 104 802 0 789 1 0 1 1 0 8 0 zombiepl 144 1087 0 1087 2 1 1 1 0 8 1 processpl 1232 1019 0 967 6 1 5 5 0 8 0 procpl 664 2042 0 1978 6 0 6 6 0 8 0 sosppl 176 5 0 5 2 1 1 1 0 8 1 sockpl 752 1183 0 1151 16 11 5 14 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 77 0 0 2 0 2 2 0 8 0 mbufpl 256 1584 0 0 99 0 99 99 0 8 0 bufpl 280 5503 0 131 384 0 384 384 0 8 0 anonpl 32 9203 0 0 75 0 75 75 0 246 0 amapchunkpl 152 27473 0 26981 41 8 33 33 0 158 12 amappl16 200 3151 0 3117 23 8 15 15 0 8 9 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 3 0 3 1 1 0 1 0 8 0 amappl13 176 443 0 442 1 0 1 1 0 8 0 amappl12 168 1380 0 1338 3 0 3 3 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 76 0 62 1 0 1 1 0 8 0 amappl9 144 314 0 314 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 85 0 84 1 0 1 1 0 8 0 amappl6 120 296 0 282 1 0 1 1 0 8 0 amappl5 112 83 0 72 1 0 1 1 0 8 0 amappl4 104 449 0 421 1 0 1 1 0 8 0 amappl3 96 4678 0 4586 4 1 3 3 0 8 0 amappl2 88 1128 0 1050 2 0 2 2 0 8 0 amappl1 80 12096 0 11503 14 0 14 14 0 8 0 amappl 88 7500 0 7335 5 0 5 5 0 92 0 uvmvnodes 80 111 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 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 49 0 5 1 0 1 1 0 8 0 uaddrrnd 24 998 0 967 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 998 0 967 1 0 1 1 0 8 0 vmmpekpl 168 9910 0 9863 3 0 3 3 0 8 0 vmmpepl 168 70661 0 68732 105 9 96 96 0 357 7 vmsppl 488 997 0 967 6 2 4 5 0 8 0 rwobjpl 80 21612 0 20529 28 1 27 27 0 8 0 pdppl 4096 2010 0 1938 112 38 74 86 0 8 2 pvpl 32 17644 0 0 145 2 143 143 0 265 0 pmappl 256 1000 0 968 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 392 0 59 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace bpfdetach(ffff800010fda000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800010fda000) at if_detach+0x1bb sys/net/if.c:1222 tun_clone_destroy(ffff800010fda000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff800037ff4a20) at if_clone_destroy+0x205 sys/net/if.c:1412 ifioctl(ffff80000163c368,80206979,ffff800037ff4a20,ffff80003c00afb8) at ifioctl+0x59d sys/net/if.c:2089 sys_ioctl(ffff80003c00afb8,ffff800037ff4c00,ffff800037ff4b50) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff800037ff4c00) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037ff4c00) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc5dda7d0510, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5