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 * 50330 76539 0 0x2 0 0 syz-executor6837 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(ffff8000006af800,ffff8000216c4e18,ffff8000216c4e20,fffffd806d1bbb40) at pf_state_insert+0xa0 sys/net/pf.c:951 pfsync_state_import(ffff800000acda00,1) at pfsync_state_import+0xcbe sys/net/if_pfsync.c:699 pfioctl(4900,c1084425,ffff800000acda00,3,ffff800021696010) at pfioctl+0x50ac sys/net/pf_ioctl.c:1729 VOP_IOCTL(fffffd807305dda0,c1084425,ffff800000acda00,3,fffffd807f7b7a20,ffff800021696010) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:297 vn_ioctl(fffffd806e6bf008,c1084425,ffff800000acda00,ffff800021696010) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021696010,ffff8000216c52c8,ffff8000216c5310) at sys_ioctl+0x4ac syscall(ffff8000216c5390) at syscall+0x507 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff77e0, 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(ffff8000006af800,ffff8000216c4e18,ffff8000216c4e20,fffffd806d1bbb40) at pf_state_insert+0xa0 sys/net/pf.c:951 pfsync_state_import(ffff800000acda00,1) at pfsync_state_import+0xcbe sys/net/if_pfsync.c:699 pfioctl(4900,c1084425,ffff800000acda00,3,ffff800021696010) at pfioctl+0x50ac sys/net/pf_ioctl.c:1729 VOP_IOCTL(fffffd807305dda0,c1084425,ffff800000acda00,3,fffffd807f7b7a20,ffff800021696010) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:297 vn_ioctl(fffffd806e6bf008,c1084425,ffff800000acda00,ffff800021696010) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021696010,ffff8000216c52c8,ffff8000216c5310) at sys_ioctl+0x4ac syscall(ffff8000216c5390) at syscall+0x507 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff77e0, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000216c4c40 rbx 0xffff8000216c4c50 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81034bd5 kprintf+0x155 r9 0x1 r10 0xa4734d6a10230b83 r11 0x7ef2d22de7b6c997 r12 0x3000000008 r13 0xffff8000216c4cf0 r14 0x100 r15 0x1 rip 0xffffffff81116418 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000216c4c30 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor6837) pid=50330 stat=onproc flags process=2 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000216967f0,0xffffffff827feb10 process=0xffff800021698808 user=0xffff8000216c0000, vmspace=0xfffffd807effd110 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *76539 50330 12842 0 7 0x2 syz-executor6837 12842 429229 88143 0 3 0x10008a sigsusp ksh 88143 428083 46894 0 2 0x12 sshd 52681 46528 1 0 3 0x100083 ttyin getty 46894 134037 1 0 3 0x80 select sshd 14924 205020 88583 73 3 0x100090 kqread syslogd 88583 348207 1 0 3 0x100082 netio syslogd 78983 340581 1 77 3 0x100090 poll dhclient 64712 55116 1 0 3 0x80 poll dhclient 89093 514895 0 0 3 0x14200 bored smr 71304 422615 0 0 2 0x14200 zerothread 74800 470955 0 0 3 0x14200 aiodoned aiodoned 35148 292066 0 0 3 0x14200 syncer update 58856 492020 0 0 3 0x14200 cleaner cleaner 29535 93131 0 0 3 0x14200 reaper reaper 6392 105221 0 0 3 0x14200 pgdaemon pagedaemon 86054 177923 0 0 3 0x14200 bored crynlk 92003 290599 0 0 3 0x14200 bored crypto 66733 367052 0 0 3 0x14200 bored viomb 49240 152916 0 0 3 0x40014200 acpi0 acpi0 60390 128459 0 0 3 0x14200 bored softnet 1917 492575 0 0 3 0x14200 bored systqmp 3411 312592 0 0 3 0x14200 bored systq 46185 499736 0 0 3 0x40014200 bored softclock 57684 181070 0 0 3 0x40014200 idle0 1 152872 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 9457 6337K 6338K 78643K 10547 0 pcb 13 8K 8K 78643K 13 0 rtable 61 2K 2K 78643K 117 0 ifaddr 25 7K 7K 78643K 25 0 counters 19 16K 16K 78643K 19 0 ioctlops 1 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1182 74K 74K 78643K 1187 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 0K 0K 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 47 38K 46K 78643K 284 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 261 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 31 1K 2K 78643K 513 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 3 0 temp 18 3953K 4017K 78643K 1442 0 kqueue 2 2K 2K 78643K 2 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 2 0 0 1 0 1 1 0 8 0 rtpcb 120 15 0 13 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 120 27 0 19 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 8 0 5 1 0 1 1 0 8 0 inpcb 304 22 0 16 1 0 1 1 0 8 0 pfstscr 40 2 0 0 1 0 1 1 0 8 0 pfstkey 112 2 0 0 1 0 1 1 0 8 0 pfstate 320 1 0 0 1 0 1 1 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 1389 0 15 86 0 86 86 0 8 0 ffsino 240 1389 0 15 81 0 81 81 0 8 0 nchpl 144 1563 0 31 57 0 57 57 0 8 0 uvmvnodes 72 1398 0 0 26 0 26 26 0 8 0 vnodes 224 1398 0 0 83 0 83 83 0 8 0 namei 1024 3490 0 3490 2 1 1 1 0 8 1 scxspl 216 3214 0 3214 1 0 1 1 0 8 1 plimitpl 152 13 0 8 1 0 1 1 0 8 0 sigapl 424 192 0 166 4 0 4 4 0 8 0 knotepl 112 5 0 0 1 0 1 1 0 8 0 kqueuepl 168 1 0 0 1 0 1 1 0 8 0 pipepl 304 57 0 53 2 1 1 1 0 8 0 fdescpl 432 177 0 166 2 0 2 2 0 8 0 filepl 120 823 0 779 2 0 2 2 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 144 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 96 57 0 50 1 0 1 1 0 8 0 zombiepl 144 166 0 166 2 1 1 1 0 8 1 processpl 1016 192 0 166 4 0 4 4 0 8 0 procpl 672 192 0 166 3 0 3 3 0 8 0 sockpl 432 64 0 48 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 6116 0 6082 9 3 6 8 0 8 1 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 7788 0 7741 6 2 4 5 0 8 0 bufpl 280 1902 0 100 129 0 129 129 0 8 0 anonpl 24 18063 0 16937 11 3 8 10 0 188 1 amapchunkpl 152 474 0 439 3 1 2 3 0 158 0 amappl16 200 70 0 65 1 0 1 1 0 8 0 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl14 184 23 0 20 1 0 1 1 0 8 0 amappl13 176 12 0 11 2 1 1 1 0 8 0 amappl12 168 11 0 11 1 1 0 1 0 8 0 amappl11 160 42 0 33 1 0 1 1 0 8 0 amappl10 152 6 0 4 1 0 1 1 0 8 0 amappl9 144 215 0 215 2 1 1 1 0 8 1 amappl8 136 56 0 55 1 0 1 1 0 8 0 amappl7 128 181 0 180 1 0 1 1 0 8 0 amappl6 120 52 0 45 1 0 1 1 0 8 0 amappl5 112 337 0 323 1 0 1 1 0 8 0 amappl4 104 238 0 218 1 0 1 1 0 8 0 amappl3 96 91 0 84 1 0 1 1 0 8 0 amappl2 88 745 0 700 2 0 2 2 0 8 0 amappl1 80 12564 0 12171 18 7 11 18 0 8 0 amappl 88 351 0 333 1 0 1 1 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 24 177 0 166 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 177 0 166 1 0 1 1 0 8 0 vmmpekpl 168 5289 0 5274 1 0 1 1 0 8 0 vmmpepl 168 26383 0 25637 48 12 36 48 0 357 2 vmsppl 272 176 0 166 1 0 1 1 0 8 0 rwobjpl 24 6925 0 6424 6 2 4 6 0 8 0 pdppl 4096 360 0 332 40 12 28 34 0 8 0 pvpl 32 72207 0 69458 28 2 26 26 0 265 3 pmappl 200 176 0 166 1 0 1 1 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 245 0 21 7 0 7 7 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(ffff8000006af800,ffff8000216c4e18,ffff8000216c4e20,fffffd806d1bbb40) at pf_state_insert+0xa0 sys/net/pf.c:951 pfsync_state_import(ffff800000acda00,1) at pfsync_state_import+0xcbe sys/net/if_pfsync.c:699 pfioctl(4900,c1084425,ffff800000acda00,3,ffff800021696010) at pfioctl+0x50ac sys/net/pf_ioctl.c:1729 VOP_IOCTL(fffffd807305dda0,c1084425,ffff800000acda00,3,fffffd807f7b7a20,ffff800021696010) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:297 vn_ioctl(fffffd806e6bf008,c1084425,ffff800000acda00,ffff800021696010) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021696010,ffff8000216c52c8,ffff8000216c5310) at sys_ioctl+0x4ac syscall(ffff8000216c5390) at syscall+0x507 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff77e0, 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(ffff8000006af800,ffff8000216c4e18,ffff8000216c4e20,fffffd806d1bbb40) at pf_state_insert+0xa0 sys/net/pf.c:951 pfsync_state_import(ffff800000acda00,1) at pfsync_state_import+0xcbe sys/net/if_pfsync.c:699 pfioctl(4900,c1084425,ffff800000acda00,3,ffff800021696010) at pfioctl+0x50ac sys/net/pf_ioctl.c:1729 VOP_IOCTL(fffffd807305dda0,c1084425,ffff800000acda00,3,fffffd807f7b7a20,ffff800021696010) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:297 vn_ioctl(fffffd806e6bf008,c1084425,ffff800000acda00,ffff800021696010) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff800021696010,ffff8000216c52c8,ffff8000216c5310) at sys_ioctl+0x4ac syscall(ffff8000216c5390) at syscall+0x507 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff77e0, count: -11 ddb>