login: panic: rw_enter: pf_state_lock locking against myself Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *149281 932 0 0 0x4000000 0 syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e4940) at panic+0x15e sys/kern/subr_prf.c:218 rw_enter(ffffffff826fc3e0,1) at rw_enter+0x36f sys/kern/kern_rwlock.c:174 pf_state_insert(ffff800000b0c900,ffff8000217234d8,ffff8000217234e0,fffffd806a8cddc8) at pf_state_insert+0xa0 sys/net/pf.c:951 pfsync_state_import(ffff800000acdc00,1) at pfsync_state_import+0xcbe sys/net/if_pfsync.c:699 pfioctl(4900,c1084425,ffff800000acdc00,3,ffff800023753508) at pfioctl+0x50ac sys/net/pf_ioctl.c:1729 VOP_IOCTL(fffffd806e703a20,c1084425,ffff800000acdc00,3,fffffd807f7b79c0,ffff800023753508) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:297 vn_ioctl(fffffd806e6c7d28,c1084425,ffff800000acdc00,ffff800023753508) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800023753508,ffff800021723988,ffff8000217239d0) at sys_ioctl+0x4ac syscall(ffff800021723a50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x649e2e106e0, count: 4 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic rw_enter: pf_state_lock locking against myself ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e4940) at panic+0x15e sys/kern/subr_prf.c:218 rw_enter(ffffffff826fc3e0,1) at rw_enter+0x36f sys/kern/kern_rwlock.c:174 pf_state_insert(ffff800000b0c900,ffff8000217234d8,ffff8000217234e0,fffffd806a8cddc8) at pf_state_insert+0xa0 sys/net/pf.c:951 pfsync_state_import(ffff800000acdc00,1) at pfsync_state_import+0xcbe sys/net/if_pfsync.c:699 pfioctl(4900,c1084425,ffff800000acdc00,3,ffff800023753508) at pfioctl+0x50ac sys/net/pf_ioctl.c:1729 VOP_IOCTL(fffffd806e703a20,c1084425,ffff800000acdc00,3,fffffd807f7b79c0,ffff800023753508) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:297 vn_ioctl(fffffd806e6c7d28,c1084425,ffff800000acdc00,ffff800023753508) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800023753508,ffff800021723988,ffff8000217239d0) at sys_ioctl+0x4ac syscall(ffff800021723a50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x649e2e106e0, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff800021723300 rbx 0xffff800021723310 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81034bd5 kprintf+0x155 r9 0x1 r10 0xb41e68b3eaed04b r11 0x6f929929fce82bbc r12 0x3000000008 r13 0xffff8000217233b0 r14 0x100 r15 0x1 rip 0xffffffff81116418 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000217232f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) pid=149281 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff8000237537a8,0xffffffff827feb10 process=0xffff800023763018 user=0xffff80002171e000, vmspace=0xfffffd8067824770 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 932 334471 81883 0 2 0 syz-executor.1 * 932 149281 81883 0 7 0x4000000 syz-executor.1 91533 214482 1 0 3 0x100083 ttyin getty 81883 373809 34133 0 3 0x82 nanoslp syz-executor.1 95420 474072 0 0 3 0x14280 nfsidl nfsio 58314 339662 0 0 3 0x14280 nfsidl nfsio 90210 461543 0 0 3 0x14280 nfsidl nfsio 25931 59757 0 0 3 0x14280 nfsidl nfsio 82683 516908 0 0 3 0x14280 nfsidl nfsio 40649 254685 0 0 3 0x14280 nfsidl nfsio 1274 330401 0 0 3 0x14280 nfsidl nfsio 5650 166377 0 0 3 0x14280 nfsidl nfsio 59936 428363 0 0 3 0x14280 nfsidl nfsio 73829 8505 0 0 3 0x14280 nfsidl nfsio 93247 334369 0 0 3 0x14280 nfsidl nfsio 13563 60727 0 0 3 0x14280 nfsidl nfsio 63153 77204 0 0 3 0x14280 nfsidl nfsio 84504 316302 0 0 3 0x14280 nfsidl nfsio 46525 121997 0 0 3 0x14280 nfsidl nfsio 25269 84404 0 0 3 0x14280 nfsidl nfsio 59584 162189 0 0 3 0x14280 nfsidl nfsio 73153 17569 0 0 3 0x14280 nfsidl nfsio 75143 204671 0 0 3 0x14280 nfsidl nfsio 4203 196833 0 0 3 0x14280 nfsidl nfsio 86978 500827 34133 0 2 0x2 syz-executor.0 71092 155663 0 0 3 0x14200 bored sosplice 34133 261254 6915 0 3 0x82 thrsleep syz-fuzzer 34133 39186 6915 0 3 0x4000082 nanoslp syz-fuzzer 34133 62448 6915 0 3 0x4000082 kqread syz-fuzzer 34133 433040 6915 0 3 0x4000082 thrsleep syz-fuzzer 34133 31529 6915 0 3 0x4000082 thrsleep syz-fuzzer 34133 289137 6915 0 3 0x4000082 thrsleep syz-fuzzer 34133 150115 6915 0 3 0x4000082 thrsleep syz-fuzzer 6915 134098 632 0 3 0x10008a sigsusp ksh 632 230959 89246 0 3 0x92 select sshd 89246 438736 1 0 3 0x80 select sshd 6907 143292 21401 73 3 0x100090 kqread syslogd 21401 459079 1 0 3 0x100082 netio syslogd 2797 182242 1 77 3 0x100090 poll dhclient 58429 35921 1 0 3 0x80 poll dhclient 4989 450354 0 0 3 0x14200 bored smr 46721 467116 0 0 2 0x14200 zerothread 88550 490338 0 0 3 0x14200 aiodoned aiodoned 85632 60695 0 0 3 0x14200 syncer update 24436 510491 0 0 3 0x14200 cleaner cleaner 81408 51349 0 0 3 0x14200 reaper reaper 97174 348487 0 0 3 0x14200 pgdaemon pagedaemon 75581 226718 0 0 3 0x14200 bored crynlk 85121 175949 0 0 3 0x14200 bored crypto 18413 168630 0 0 3 0x14200 bored viomb 47183 89288 0 0 3 0x40014200 acpi0 acpi0 65142 18208 0 0 3 0x14200 bored softnet 26112 155365 0 0 3 0x14200 bored systqmp 73226 364783 0 0 3 0x14200 bored systq 58942 20116 0 0 3 0x40014200 bored softclock 35476 159242 0 0 3 0x40014200 idle0 1 387412 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9527 6375K 7217K 78643K 16699 0 pcb 13 8K 8K 78643K 279 0 rtable 109 4K 4K 78643K 624 0 ifaddr 73 14K 15K 78643K 173 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 40 0 ioctlops 1 0K 4K 78643K 286 0 iov 0 0K 24K 78643K 176 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 3126 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 19 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 633 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 5992 0 sigio 0 0K 0K 78643K 36 0 proc 51 38K 63K 78643K 968 0 subproc 32 2K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 314 0 in_multi 33 2K 2K 78643K 258 0 ether_multi 1 0K 0K 78643K 82 0 mrt 0 0K 0K 78643K 55 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 2K 78643K 584 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 218 387K 396K 78643K 13636 0 UVM aobj 14 2K 4K 78643K 32 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 199 0 NDP 13 0K 0K 78643K 48 0 temp 138 3976K 4040K 78643K 44506 0 kqueue 3 4K 10K 78643K 191 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 14 0 8 1 0 1 1 0 8 0 rtpcb 120 160 0 158 1 0 1 1 0 8 0 rtentry 112 110 0 66 2 0 2 2 0 8 0 unpcb 120 1245 0 1220 1 0 1 1 0 8 0 syncache 296 90 0 90 10 9 1 1 0 8 1 tcpqe 32 247 0 247 7 7 0 1 0 8 0 tcpcb 736 965 0 958 18 15 3 5 0 8 1 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 5 0 4 1 0 1 1 0 8 0 inpcb 304 2286 0 2267 7 5 2 3 0 8 0 rttmr 72 11 0 11 2 2 0 1 0 8 0 nd6 48 24 0 18 1 0 1 1 0 8 0 pkpcb 40 14 0 14 1 1 0 1 0 8 0 kcovpl 48 6 0 4 1 0 1 1 0 8 0 ppxss 1128 11 0 11 2 2 0 1 0 8 0 pfstscr 40 6 0 5 2 1 1 1 0 8 0 pfrktable 1344 11 0 11 1 1 0 1 0 8 0 pftag 88 5 0 0 1 0 1 1 0 8 0 pfqueue 264 5 0 0 1 0 1 1 0 8 0 pfstkey 112 7 0 5 2 1 1 1 0 8 0 pfstate 320 6 0 5 2 1 1 1 0 8 0 pfrule 1360 76 0 64 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 394 0 202 14 2 12 14 0 8 0 art_table 32 395 0 202 2 0 2 2 0 8 0 art_node 16 106 0 66 1 0 1 1 0 8 0 sysvmsgpl 40 77 0 37 2 1 1 1 0 8 0 semapl 112 631 0 621 1 0 1 1 0 8 0 shmpl 112 29 0 18 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8644 0 7233 89 0 89 89 0 8 0 ffsino 240 8644 0 7233 84 0 84 84 0 8 0 nchpl 144 15615 0 14031 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 37919 0 37919 2 1 1 1 0 8 1 vcpupl 1984 26 0 0 4 0 4 4 0 8 0 vmpool 528 31 0 5 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 1 0 1 0 8 0 scxspl 216 47025 0 47025 2 1 1 1 0 8 1 plimitpl 152 61 0 54 1 0 1 1 0 8 0 sigapl 424 6191 0 6141 6 0 6 6 0 8 0 futexpl 56 47295 0 47295 2 1 1 1 0 8 1 knotepl 112 318 0 298 1 0 1 1 0 8 0 kqueuepl 168 3342 0 3335 2 1 1 2 0 8 0 pipepl 304 316 0 305 12 10 2 2 0 8 1 fdescpl 432 6155 0 6141 2 0 2 2 0 8 0 filepl 120 19263 0 19164 5 1 4 5 0 8 0 lockfpl 104 532 0 531 1 0 1 1 0 8 0 lockfspl 48 220 0 219 1 0 1 1 0 8 0 sessionpl 144 24 0 14 1 0 1 1 0 8 0 pgrppl 48 40 0 30 1 0 1 1 0 8 0 ucredpl 96 1305 0 1298 1 0 1 1 0 8 0 zombiepl 144 6141 0 6141 1 0 1 1 0 8 1 processpl 1016 6191 0 6141 8 1 7 7 0 8 0 procpl 672 12523 0 12466 8 2 6 6 0 8 1 sosppl 168 77 0 77 4 4 0 1 0 8 0 sockpl 432 3715 0 3677 9 4 5 5 0 8 0 mcl64k 65536 201 0 201 9 8 1 1 0 8 1 mcl16k 16384 44 0 44 6 6 0 1 0 8 0 mcl12k 12288 64 0 64 8 8 0 1 0 8 0 mcl9k 9216 67 0 67 8 8 0 1 0 8 0 mcl8k 8192 92 0 92 9 8 1 1 0 8 1 mcl4k 4096 218 0 218 8 8 0 1 0 8 0 mcl2k2 2112 23 0 23 3 3 0 1 0 8 0 mcl2k 2048 61546 0 61479 50 36 14 17 0 8 3 mtagpl 96 547 0 374 11 1 10 10 0 8 0 mbufpl 256 214480 0 213983 109 48 61 71 0 8 0 bufpl 280 11242 0 4923 452 0 452 452 0 8 0 anonpl 24 437992 0 428287 112 41 71 82 0 188 8 amapchunkpl 152 23508 0 23256 41 26 15 23 0 158 4 amappl16 200 19220 0 18822 45 23 22 32 0 8 1 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl14 184 1115 0 1108 1 0 1 1 0 8 0 amappl13 176 1683 0 1680 1 0 1 1 0 8 0 amappl12 168 5 0 2 1 0 1 1 0 8 0 amappl11 160 63 0 51 1 0 1 1 0 8 0 amappl10 152 2975 0 2969 1 0 1 1 0 8 0 amappl9 144 15 0 15 1 1 0 1 0 8 0 amappl8 136 283 0 208 3 0 3 3 0 8 0 amappl7 128 267 0 259 1 0 1 1 0 8 0 amappl6 120 3051 0 3036 1 0 1 1 0 8 0 amappl5 112 5267 0 5251 1 0 1 1 0 8 0 amappl4 104 305 0 274 1 0 1 1 0 8 0 amappl3 96 3411 0 3402 1 0 1 1 0 8 0 amappl2 88 49771 0 49695 3 1 2 3 0 8 0 amappl1 80 171189 0 170749 27 16 11 20 0 8 0 amappl 88 12878 0 12784 5 2 3 3 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 31 0 18 1 0 1 1 0 8 0 uaddrrnd 24 6186 0 6146 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6186 0 6146 1 0 1 1 0 8 0 vmmpekpl 168 29370 0 29338 2 0 2 2 0 8 0 vmmpepl 168 764916 0 763289 126 40 86 87 0 357 9 vmsppl 272 6185 0 6146 4 1 3 3 0 8 0 rwobjpl 24 150282 0 149166 13 5 8 9 0 8 0 pdppl 4096 12378 0 12318 77 15 62 62 0 8 2 pvpl 32 2061460 0 2048702 229 104 125 139 0 265 16 pmappl 200 6185 0 6146 3 0 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 497 0 152 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e4940) at panic+0x15e sys/kern/subr_prf.c:218 rw_enter(ffffffff826fc3e0,1) at rw_enter+0x36f sys/kern/kern_rwlock.c:174 pf_state_insert(ffff800000b0c900,ffff8000217234d8,ffff8000217234e0,fffffd806a8cddc8) at pf_state_insert+0xa0 sys/net/pf.c:951 pfsync_state_import(ffff800000acdc00,1) at pfsync_state_import+0xcbe sys/net/if_pfsync.c:699 pfioctl(4900,c1084425,ffff800000acdc00,3,ffff800023753508) at pfioctl+0x50ac sys/net/pf_ioctl.c:1729 VOP_IOCTL(fffffd806e703a20,c1084425,ffff800000acdc00,3,fffffd807f7b79c0,ffff800023753508) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:297 vn_ioctl(fffffd806e6c7d28,c1084425,ffff800000acdc00,ffff800023753508) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800023753508,ffff800021723988,ffff8000217239d0) at sys_ioctl+0x4ac syscall(ffff800021723a50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x649e2e106e0, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e4940) at panic+0x15e sys/kern/subr_prf.c:218 rw_enter(ffffffff826fc3e0,1) at rw_enter+0x36f sys/kern/kern_rwlock.c:174 pf_state_insert(ffff800000b0c900,ffff8000217234d8,ffff8000217234e0,fffffd806a8cddc8) at pf_state_insert+0xa0 sys/net/pf.c:951 pfsync_state_import(ffff800000acdc00,1) at pfsync_state_import+0xcbe sys/net/if_pfsync.c:699 pfioctl(4900,c1084425,ffff800000acdc00,3,ffff800023753508) at pfioctl+0x50ac sys/net/pf_ioctl.c:1729 VOP_IOCTL(fffffd806e703a20,c1084425,ffff800000acdc00,3,fffffd807f7b79c0,ffff800023753508) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:297 vn_ioctl(fffffd806e6c7d28,c1084425,ffff800000acdc00,ffff800023753508) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800023753508,ffff800021723988,ffff8000217239d0) at sys_ioctl+0x4ac syscall(ffff800021723a50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x649e2e106e0, count: -11