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 *174933 6595 0 0x14000 0x200 1K softnet 95327 33110 0 0x14000 0x40000200 0 softclock db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218 __assert(ffffffff82474f23,ffffffff824b0a1c,14a,ffffffff82441128) at __assert+0x2b sys/kern/subr_prf.c:162 pf_purge_rule(ffff800000aa9a78) at pf_purge_rule+0xc9 sys/net/pf_ioctl.c:330 pf_purge(ffffffff828fd370) at pf_purge+0xd2 pf_purge_expired_rules sys/net/pf.c:1245 [inline] pf_purge(ffffffff828fd370) at pf_purge+0xd2 sys/net/pf.c:1280 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: 9 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel diagnostic assertion "(rule != NULL) && (rule->ruleset != NULL)" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pf_ioctl.c", line 330 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218 __assert(ffffffff82474f23,ffffffff824b0a1c,14a,ffffffff82441128) at __assert+0x2b sys/kern/subr_prf.c:162 pf_purge_rule(ffff800000aa9a78) at pf_purge_rule+0xc9 sys/net/pf_ioctl.c:330 pf_purge(ffffffff828fd370) at pf_purge+0xd2 pf_purge_expired_rules sys/net/pf.c:1245 [inline] pf_purge(ffffffff828fd370) at pf_purge+0xd2 sys/net/pf.c:1280 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -6 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020da98b0 rbx 0xffff800020da9960 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81cae1ef kprintf+0x16f r9 0x1 r10 0x2 r11 0x304417a009708004 r12 0x3000000008 r13 0xffff800020da98c0 r14 0x100 r15 0x1 rip 0xffffffff81a0eff8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020da98a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (softnet) pid=174933 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020d88270,0xffff800020d88c40 process=0xffff800020d8af80 user=0xffff800020da4000, vmspace=0xffffffff829223c8 estcpu=0, cpticks=1, pctcpu=1.12 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 32866 351933 0 0 3 0x14200 bored sosplice 70634 457091 64550 0 2 0x482 syz-executor.1 49644 407609 64550 0 3 0x82 nanosleep syz-executor.0 64550 298168 4730 0 3 0x82 thrsleep syz-fuzzer 64550 471088 4730 0 2 0x4000482 syz-fuzzer 64550 140612 4730 0 3 0x4000082 thrsleep syz-fuzzer 64550 229960 4730 0 3 0x4000082 thrsleep syz-fuzzer 64550 496519 4730 0 3 0x4000082 kqread syz-fuzzer 64550 290980 4730 0 3 0x4000082 thrsleep syz-fuzzer 64550 52112 4730 0 3 0x4000082 thrsleep syz-fuzzer 64550 258987 4730 0 3 0x4000082 thrsleep syz-fuzzer 4730 264278 34619 0 3 0x10008a pause ksh 34619 298474 84957 0 3 0x92 select sshd 52200 487295 1 0 3 0x100083 ttyin getty 84957 268517 1 0 3 0x80 select sshd 32704 233957 67077 74 3 0x100092 bpf pflogd 67077 39003 1 0 3 0x80 netio pflogd 15679 381430 34304 73 3 0x100090 kqread syslogd 34304 261875 1 0 3 0x100082 netio syslogd 51963 351694 1 77 3 0x100090 poll dhclient 88025 432454 1 0 3 0x80 poll dhclient 46272 424320 0 0 3 0x14200 bored smr 70717 304381 0 0 3 0x14200 pgzero zerothread 18225 200154 0 0 3 0x14200 aiodoned aiodoned 87668 426683 0 0 2 0x14200 update 18865 124796 0 0 3 0x14200 cleaner cleaner 22251 325444 0 0 3 0x14200 reaper reaper 53550 156428 0 0 3 0x14200 pgdaemon pagedaemon 95480 461350 0 0 3 0x14200 bored crynlk 38328 257897 0 0 3 0x14200 bored crypto 37460 9896 0 0 3 0x40014200 acpi0 acpi0 56288 243154 0 0 3 0x40014200 idle1 * 6595 174933 0 0 7 0x14200 softnet 83177 160422 0 0 2 0x14200 systqmp 25902 7583 0 0 3 0x14200 bored systq 33110 95327 0 0 7 0x40014200 softclock 8540 205770 0 0 3 0x40014200 idle0 1 417901 0 0 3 0x82 wait init 0 0 -1 0 2 0x10200 swapper ddb{1}> show all locks Process 6595 (softnet) thread 0xffff800020d884e0 (174933) exclusive rwlock netlock r = 0 (0xffffffff82759528) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pf_purge+0x27 sys/net/pf.c:1273 #2 taskq_thread+0xec sys/kern/kern_task.c:437 #3 proc_trampoline+0x1c exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828c0930) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 pf_purge+0x1b sys/net/pf.c:1264 #2 taskq_thread+0xec sys/kern/kern_task.c:437 #3 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0xdf sys/kern/kern_task.c:436 #2 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9474 6405K 6664K 78643K 10619 0 pcb 13 8K 8K 78643K 27 0 rtable 112 4K 8K 78643K 242 0 ifaddr 49 11K 12K 78643K 57 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1492 0 iov 0 0K 12K 78643K 6 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1241 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 12 0K 0K 78643K 26 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 4 9K 25K 78643K 108 0 sigio 0 0K 0K 78643K 10 0 proc 60 63K 95K 78643K 445 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 7 0 in_multi 40 2K 2K 78643K 42 0 ether_multi 1 0K 0K 78643K 2 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 1K 78643K 215 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 151 26K 42K 78643K 1289 0 UVM aobj 7 2K 2K 78643K 7 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 6 0K 0K 78643K 10 0 temp 69 3854K 3918K 78643K 2343 0 kqueue 3 4K 8K 78643K 11 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 7 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 21 0 19 1 0 1 1 0 8 0 rtentry 112 46 0 1 2 0 2 2 0 8 0 unpcb 120 41 0 31 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 96 0 96 1 1 0 1 0 8 0 tcpcb 544 85 0 60 3 0 3 3 0 8 0 inpcb 296 151 0 143 2 0 2 2 0 8 1 nd6 48 6 0 0 1 0 1 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 19 0 17 2 1 1 1 0 8 0 pfstitem 24 13 0 3 1 0 1 1 0 8 0 pfstkey 112 15 0 5 1 0 1 1 0 8 0 pfstate 328 14 0 4 2 1 1 2 0 8 0 pfrule 1360 28 0 19 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 45 0 4 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1520 0 117 88 0 88 88 0 8 0 ffsino 272 1520 0 117 94 0 94 94 0 8 0 nchpl 144 1841 0 235 60 0 60 60 0 8 0 uvmvnodes 72 1578 0 0 29 0 29 29 0 8 0 vnodes 208 1578 0 0 84 0 84 84 0 8 0 namei 1024 4884 0 4884 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 560 1 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 7 0 5 2 1 1 1 0 8 0 scxspl 192 5384 0 5384 8 1 7 7 0 8 7 plimitpl 152 25 0 17 1 0 1 1 0 8 0 sigapl 424 324 0 293 4 0 4 4 0 8 0 futexpl 56 1138 0 1138 1 0 1 1 0 8 1 knotepl 112 72 0 52 1 0 1 1 0 8 0 kqueuepl 144 65 0 63 1 0 1 1 0 8 0 pipepl 304 80 0 69 2 0 2 2 0 8 1 fdescpl 496 308 0 293 3 0 3 3 0 8 0 filepl 152 1577 0 1475 5 0 5 5 0 8 1 lockfpl 104 9 0 8 1 0 1 1 0 8 0 lockfspl 48 4 0 3 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 86 0 77 1 0 1 1 0 8 0 zombiepl 144 293 0 291 1 0 1 1 0 8 0 processpl 992 324 0 291 5 0 5 5 0 8 0 procpl 624 482 0 442 4 0 4 4 0 8 0 sockpl 400 213 0 194 3 0 3 3 0 8 1 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 201 0 0 25 0 25 25 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 235 0 0 15 0 15 15 0 8 0 bufpl 280 3392 0 127 234 0 234 234 0 8 0 anonpl 16 50744 0 33661 82 1 81 81 0 124 11 amapchunkpl 152 2086 0 1825 29 4 25 25 0 158 13 amappl16 192 1489 0 680 49 0 49 49 0 8 8 amappl15 184 20 0 16 1 0 1 1 0 8 0 amappl14 176 3 0 0 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 23 0 17 1 0 1 1 0 8 0 amappl11 152 59 0 42 1 0 1 1 0 8 0 amappl10 144 14 0 12 1 0 1 1 0 8 0 amappl9 136 440 0 437 1 0 1 1 0 8 0 amappl8 128 425 0 382 2 0 2 2 0 8 0 amappl7 120 116 0 103 1 0 1 1 0 8 0 amappl6 112 33 0 25 1 0 1 1 0 8 0 amappl5 104 204 0 189 1 0 1 1 0 8 0 amappl4 96 480 0 454 1 0 1 1 0 8 0 amappl3 88 121 0 111 1 0 1 1 0 8 0 amappl2 80 1522 0 1461 2 0 2 2 0 8 0 amappl1 72 17301 0 16881 23 13 10 18 0 8 0 amappl 80 766 0 696 2 0 2 2 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 309 0 293 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 309 0 293 1 0 1 1 0 8 0 vmmpekpl 168 6398 0 6360 2 0 2 2 0 8 0 vmmpepl 168 45756 0 43859 121 10 111 116 0 357 22 vmsppl 368 308 0 293 2 0 2 2 0 8 0 pdppl 4096 625 0 587 6 0 6 6 0 8 0 pvpl 32 160882 0 141266 192 1 191 192 0 265 30 pmappl 232 308 0 293 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 263 0 3 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff826fbff0) 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 __mp_lock(ffffffff828c0728) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c0728) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828c0728,1) 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(ffff800020d97e38,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 softclock_thread(ffff800020d88750) at softclock_thread+0x103 sys/kern/kern_timeout.c:587 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff826fbff0) 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 __mp_lock(ffffffff828c0728) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c0728) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828c0728,1) 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(ffff800020d97e38,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 softclock_thread(ffff800020d88750) at softclock_thread+0x103 sys/kern/kern_timeout.c:587 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218 __assert(ffffffff82474f23,ffffffff824b0a1c,14a,ffffffff82441128) at __assert+0x2b sys/kern/subr_prf.c:162 pf_purge_rule(ffff800000aa9a78) at pf_purge_rule+0xc9 sys/net/pf_ioctl.c:330 pf_purge(ffffffff828fd370) at pf_purge+0xd2 pf_purge_expired_rules sys/net/pf.c:1245 [inline] pf_purge(ffffffff828fd370) at pf_purge+0xd2 sys/net/pf.c:1280 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: 9 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8240a73d) at panic+0x164 sys/kern/subr_prf.c:218 __assert(ffffffff82474f23,ffffffff824b0a1c,14a,ffffffff82441128) at __assert+0x2b sys/kern/subr_prf.c:162 pf_purge_rule(ffff800000aa9a78) at pf_purge_rule+0xc9 sys/net/pf_ioctl.c:330 pf_purge(ffffffff828fd370) at pf_purge+0xd2 pf_purge_expired_rules sys/net/pf.c:1245 [inline] pf_purge(ffffffff828fd370) at pf_purge+0xd2 sys/net/pf.c:1280 taskq_thread(ffff80000002c000) at taskq_thread+0xec sys/kern/kern_task.c:437 end trace frame: 0x0, count: -6