kernel: protection fault trap, code=0
Stopped at pf_anchor_global_RB_REMOVE+0x81: movq 0(%r12),%r15
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
the kernel did not panic
ddb> trace
pf_anchor_global_RB_REMOVE(ffffffff83aeeea8,ffff8000016ead48) at pf_anchor_global_RB_REMOVE+0x81 sys/net/pf_ruleset.c:82
pf_remove_if_empty_ruleset(ffff8000016eb1d8) at pf_remove_if_empty_ruleset+0x12d sys/net/pf_ruleset.c:301
pfi_dynaddr_setup(ffff80000162dac0,0,1) at pfi_dynaddr_setup+0x671 sys/net/pf_if.c:508
pf_addr_setup(ffffffff83aef340,ffff80000162dac0,0) at pf_addr_setup+0x46 sys/net/pf_ioctl.c:948
pfioctl(14900,cd60441a,ffff800000c74000,83,ffff80002a772d08) at pfioctl+0x9aba sys/net/pf_ioctl.c:2621
VOP_IOCTL(fffff780666830f0,cd60441a,ffff800000c74000,83,fffff78007ffd750,ffff80002a772d08) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffff78075070170,cd60441a,ffff800000c74000,ffff80002a772d08) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80002a772d08,ffff800035cc3de0,ffff800035cc3d30) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff800035cc3de0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff800035cc3de0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x48db15d6550, count: -10
ddb> show registers
rdi 0xffff800035cc4000
rsi 0x867
rbp 0xffff800035cc37b0
rbx 0xffffffff83aeeea8 pf_anchors
rdx 0xffff800035cc4000
rcx 0x866
rax 0xffffffff8336670f pf_anchor_global_RB_REMOVE+0x2f
r8 0x3fc
r9 0x8080808080808080
r10 0x85c1054060950a10
r11 0xaf8c47e1cf6adc5
r12 0xfa731f7568ec0029
r13 0x1
r14 0xffff8000016ead48
r15 0xce0994ddb897c56d
rip 0xffffffff83366761 pf_anchor_global_RB_REMOVE+0x81
cs 0x8
rflags 0x10282 __ALIGN_SIZE+0xf282
rsp 0xffff800035cc3760
ss 0x10
pf_anchor_global_RB_REMOVE+0x81: movq 0(%r12),%r15
ddb> show proc
PROC (syz-executor) tid=433798 pid=27049 tcnt=2 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a7722a8,0xffff80002a7727e8
process=0xffff800045ffa898 user=0xffff800035cbe000, vmspace=0xfffff7806cfd78b0
estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
29875 483130 94949 0 2 0x10 syz-executor
29875 92983 94949 0 3 0x4000090 fsleep syz-executor
27049 404399 18932 0 2 0 syz-executor
*27049 433798 18932 0 7 0x4000000 syz-executor
8962 256422 43175 0 2 0xc90 syz-executor
8962 33458 43175 0 3 0x4000090 fsleep syz-executor
8962 450043 43175 0 3 0x4000090 fsleep syz-executor
25547 300158 30773 0 2 0xc80 syz-executor
25547 391444 30773 0 3 0x4000080 netcon syz-executor
25547 275805 30773 0 3 0x4000080 fsleep syz-executor
67315 263988 84892 -1 2 0xc90 syz-executor
67315 117776 84892 -1 3 0x4000090 netcon syz-executor
67315 138264 84892 -1 3 0x4000090 netacc syz-executor
45515 368248 34188 0 2 0xc80 syz-executor
45515 279856 34188 0 3 0x4000080 netcon syz-executor
45515 56171 34188 0 3 0x4000080 fsleep syz-executor
70096 95213 58437 60928 2 0xc91 syz-executor
70096 48415 58437 60928 3 0x4000091 netcon syz-executor
70096 397491 58437 60928 3 0x4000091 fsleep syz-executor
33867 236653 7702 0 2 0xc80 syz-executor
33867 394499 7702 0 3 0x4000080 pipewr syz-executor
33867 144181 7702 0 3 0x4000080 pipewr syz-executor
33867 519421 7702 0 3 0x4000080 fsleep syz-executor
8010 383568 1 0 3 0x100083 ttyin getty
34212 233540 0 0 3 0x14280 nfsidl nfsio
18596 56315 0 0 3 0x14280 nfsidl nfsio
34559 344834 0 0 3 0x14280 nfsidl nfsio
29096 13272 0 0 3 0x14280 nfsidl nfsio
11715 59678 0 0 3 0x14280 nfsidl nfsio
40308 248283 0 0 3 0x14280 nfsidl nfsio
593 226102 0 0 3