login: panic: kernel diagnostic assertion "(rule != NULL) && (rule->ruleset != NULL)" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pf_ioctl.c", line 330 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 338235 33889 0 0x2 0 1 syz-executor1742 *176350 79432 0 0x14000 0x200 0K systq db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8244cf87) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff824be1c4,ffffffff824f7e76,14a,ffffffff824840b5) at __assert+0x25 sys/kern/subr_prf.c:161 pf_purge_rule(ffff800000ba0558) at pf_purge_rule+0x1ab sys/net/pf_ioctl.c:330 pf_purge_expired_rules() at pf_purge_expired_rules+0xbc sys/net/pf.c:1275 pf_purge(ffffffff82981d30) at pf_purge+0xe0 sys/net/pf.c:1312 taskq_thread(ffffffff827f67a0) at taskq_thread+0xe6 sys/kern/kern_task.c:449 end trace frame: 0x0, count: 8 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "(rule != NULL) && (rule->ruleset != NULL)" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pf_ioctl.c", line 330 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8244cf87) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff824be1c4,ffffffff824f7e76,14a,ffffffff824840b5) at __assert+0x25 sys/kern/subr_prf.c:161 pf_purge_rule(ffff800000ba0558) at pf_purge_rule+0x1ab sys/net/pf_ioctl.c:330 pf_purge_expired_rules() at pf_purge_expired_rules+0xbc sys/net/pf.c:1275 pf_purge(ffffffff82981d30) at pf_purge+0xe0 sys/net/pf.c:1312 taskq_thread(ffffffff827f67a0) at taskq_thread+0xe6 sys/kern/kern_task.c:449 end trace frame: 0x0, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002115b260 rbx 0xffffffff827e3bff cpu_info_full_primary+0x2bff rdx 0x8b rcx 0x2 rax 0xa0 r8 0xffffffff817eb474 kprintf+0x144 r9 0x1 r10 0x2215bf137004de3 r11 0x8defe935bbda665e r12 0xffffffff827e3a00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81552b08 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002115b250 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (systq) pid=176350 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000211497a0,0xffff8000211487f0 process=0xffff8000ffffe568 user=0xffff800021156000, vmspace=0xffffffff828c32f0 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 33889 338235 95218 0 7 0x2 syz-executor1742 95218 239022 22804 0 3 0x10008a sigsusp ksh 22804 513109 89373 0 3 0x9a kqread sshd 64474 83431 1 0 3 0x100083 ttyin getty 89373 265247 1 0 3 0x88 kqread sshd 77824 277959 44133 74 3 0x100092 bpf pflogd 44133 175672 1 0 3 0x80 netio pflogd 25871 453960 84595 73 3 0x100090 kqread syslogd 84595 72808 1 0 3 0x100082 netio syslogd 75466 960 1 0 3 0x100080 kqread resolvd 62939 454887 12945 77 3 0x100092 kqread dhcpleased 42298 311821 12945 77 3 0x100092 kqread dhcpleased 12945 514799 1 0 3 0x80 kqread dhcpleased 56399 124845 0 0 3 0x14200 bored smr 83192 148187 0 0 3 0x14200 pgzero zerothread 66029 503231 0 0 3 0x14200 aiodoned aiodoned 88280 90858 0 0 3 0x14200 syncer update 32991 366015 0 0 3 0x14200 cleaner cleaner 59866 352943 0 0 3 0x14200 reaper reaper 24894 318217 0 0 3 0x14200 pgdaemon pagedaemon 91883 311767 0 0 3 0x14200 bored viomb 95221 448356 0 0 3 0x40014200 acpi0 acpi0 96768 445830 0 0 3 0x40014200 idle1 88067 104980 0 0 3 0x14200 bored softnet 98432 444059 0 0 3 0x14200 bored systqmp *79432 176350 0 0 7 0x14200 systq 24079 390825 0 0 3 0x40014200 bored softclock 5518 276616 0 0 3 0x40014200 idle0 1 254187 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 79432 (systq) thread 0xffff800021149500 (176350) exclusive rwlock pf_lock r = 0 (0xffffffff82768fb0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 pf_purge+0xa9 sys/net/pf.c:1308 #2 taskq_thread+0xe6 sys/kern/kern_task.c:449 #3 proc_trampoline+0x1c exclusive rwlock netlock r = 0 (0xffffffff82814800) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 pf_purge+0x38 sys/net/pf.c:1306 #2 taskq_thread+0xe6 sys/kern/kern_task.c:449 #3 proc_trampoline+0x1c shared rwlock systq r = 0 (0xffffffff827f6810) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 taskq_thread+0xcb sys/kern/kern_task.c:445 #2 proc_trampoline+0x1c exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828ba480) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 __mp_acquire_count+0x4c sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x1b2 sys/kern/kern_synch.c:433 #4 msleep+0x115 sys/kern/kern_synch.c:259 #5 taskq_next_work+0x6e sys/kern/kern_task.c:402 #6 taskq_thread+0x145 sys/kern/kern_task.c:442 #7 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10109 6415K 6416K 78643K 11199 0 pcb 13 8K 8K 78643K 244 0 rtable 67 3K 3K 78643K 119 0 ifaddr 30 8K 8K 78643K 31 0 counters 40 33K 33K 78643K 40 0 ioctlops 0 0K 4K 78643K 2172 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1183 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 1697 195K 286K 78643K 12598 0 file desc 1 0K 0K 78643K 1 0 proc 67 87K 87K 78643K 278 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 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 2K 78643K 353 0 tdb 3 0K 0K 78643K 3 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 82 3K 6K 78643K 2862 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 462 0 NDP 4 0K 0K 78643K 4 0 temp 24 4183K 4245K 78643K 2200 0 kqueue 11 16K 16K 78643K 20 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 128 35 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 470 0 419 5 0 5 5 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 304 956 0 950 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 3 0 1 1 0 1 1 0 8 0 pfstitem 24 9 0 2 1 0 1 1 0 8 0 pfstkey 112 9 0 2 1 0 1 1 0 8 0 pfstate 320 9 0 2 1 0 1 1 0 8 0 pfrule 1360 483 0 246 20 0 20 20 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1413 0 23 87 0 87 87 0 8 0 ffsino 272 1413 0 23 93 0 93 93 0 8 0 nchpl 144 1587 0 40 58 0 58 58 0 8 0 uvmvnodes 72 1423 0 0 26 0 26 26 0 8 0 vnodes 224 1423 0 0 84 0 84 84 0 8 0 namei 1024 4842 0 4842 2 1 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 231 0 0 7 0 7 7 0 8 0 scxspl 216 3737 0 3737 10 9 1 8 0 8 1 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 485 0 456 4 0 4 4 0 8 0 knotepl 112 42 0 0 2 0 2 2 0 8 0 kqueuepl 216 16 0 9 1 0 1 1 0 8 0 pipepl 336 69 0 66 2 1 1 1 0 8 0 fdescpl 496 471 0 456 3 0 3 3 0 8 0 filepl 152 2699 0 2641 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 69 0 57 1 0 1 1 0 8 0 zombiepl 144 456 0 455 2 1 1 1 0 8 0 processpl 1064 485 0 455 3 0 3 3 0 8 0 procpl 672 485 0 455 3 0 3 3 0 8 0 sockpl 480 1008 0 984 5 1 4 4 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 83 0 0 10 0 10 10 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 136 0 0 9 0 9 9 0 8 0 bufpl 280 2003 0 92 137 0 137 137 0 8 0 anonpl 24 58902 0 56590 18 3 15 17 0 186 1 amapchunkpl 152 5136 0 4993 8 2 6 8 0 158 0 amappl16 200 259 0 259 2 1 1 1 0 8 1 amappl15 192 66 0 63 1 0 1 1 0 8 0 amappl13 176 18 0 17 2 1 1 1 0 8 0 amappl12 168 10 0 9 1 0 1 1 0 8 0 amappl11 160 60 0 43 1 0 1 1 0 8 0 amappl10 152 11 0 9 1 0 1 1 0 8 0 amappl9 144 230 0 228 1 0 1 1 0 8 0 amappl8 136 280 0 278 1 0 1 1 0 8 0 amappl7 128 34 0 32 1 0 1 1 0 8 0 amappl6 120 268 0 263 1 0 1 1 0 8 0 amappl5 112 213 0 195 1 0 1 1 0 8 0 amappl4 104 534 0 513 1 0 1 1 0 8 0 amappl3 96 156 0 141 1 0 1 1 0 8 0 amappl2 88 295 0 263 1 0 1 1 0 8 0 amappl1 80 9639 0 9251 10 1 9 9 0 8 0 amappl 88 2385 0 2321 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 471 0 456 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 471 0 456 1 0 1 1 0 8 0 vmmpekpl 168 6502 0 6486 1 0 1 1 0 8 0 vmmpepl 168 29948 0 29095 46 4 42 42 0 357 1 vmsppl 368 470 0 456 2 0 2 2 0 8 0 rwobjpl 56 8796 0 8237 10 2 8 9 0 8 0 pdppl 4096 950 0 912 58 18 40 44 0 8 2 pvpl 32 145833 0 141704 43 6 37 37 0 265 2 pmappl 224 470 0 456 2 0 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 303 0 22 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8244cf87) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff824be1c4,ffffffff824f7e76,14a,ffffffff824840b5) at __assert+0x25 sys/kern/subr_prf.c:161 pf_purge_rule(ffff800000ba0558) at pf_purge_rule+0x1ab sys/net/pf_ioctl.c:330 pf_purge_expired_rules() at pf_purge_expired_rules+0xbc sys/net/pf.c:1275 pf_purge(ffffffff82981d30) at pf_purge+0xe0 sys/net/pf.c:1312 taskq_thread(ffffffff827f67a0) at taskq_thread+0xe6 sys/kern/kern_task.c:449 end trace frame: 0x0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc syscall(ffff80002121ee50) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff80002121ee50) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcfd70, count: 9 ddb{1}> trace x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc syscall(ffff80002121ee50) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff80002121ee50) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcfd70, count: -6