panic: spl assertion failure in yield Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *248729 18514 0 0x2 0x4000000 0 syz-executor7465 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82248b59) at panic+0x15c sys/kern/subr_prf.c:207 splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237 yield() at yield+0x6f sys/kern/sched_bsd.c:304 pool_get(ffffffff82584428,d) at pool_get+0x166 sys/kern/subr_pool.c:588 pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216 VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290 vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1 syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6ab108933d0, 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 spl assertion failure in yield ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82248b59) at panic+0x15c sys/kern/subr_prf.c:207 splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237 yield() at yield+0x6f sys/kern/sched_bsd.c:304 pool_get(ffffffff82584428,d) at pool_get+0x166 sys/kern/subr_pool.c:588 pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216 VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290 vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1 syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6ab108933d0, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d7ca050 rbx 0xffff80001d7ca100 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff8101c2ef kprintf+0x15f r9 0x1 r10 0x2 r11 0xd20f713237f58bcc r12 0x3000000008 r13 0xffff80001d7ca060 r14 0x100 r15 0x1 rip 0xffffffff81294578 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d7ca040 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor7465) pid=248729 stat=onproc flags process=2 proc=4000000 pri=54, usrpri=54, nice=20 forw=0xffffffffffffffff, list=0xffff80001d7a8600,0xffffffff825ec610 process=0xffff8000ffff9210 user=0xffff80001d7c5000, vmspace=0xfffffd806bc09660 estcpu=4, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 18514 133009 7834 0 2 0x2 syz-executor7465 *18514 248729 7834 0 7 0x4000002 syz-executor7465 7834 327965 50174 0 3 0x10008a pause ksh 50174 127670 88922 0 3 0x92 select sshd 24463 388494 1 0 3 0x100083 ttyin getty 88922 200262 1 0 3 0x80 select sshd 47592 212659 49766 73 3 0x100090 kqread syslogd 49766 486763 1 0 3 0x100082 netio syslogd 36180 205403 1 77 3 0x100090 poll dhclient 23480 175064 1 0 3 0x80 poll dhclient 76411 120503 0 0 3 0x14200 bored smr 78952 132584 0 0 3 0x14200 pgzero zerothread 92208 97701 0 0 3 0x14200 aiodoned aiodoned 73149 24946 0 0 3 0x14200 syncer update 14046 209907 0 0 3 0x14200 cleaner cleaner 38172 517899 0 0 3 0x14200 reaper reaper 46570 323948 0 0 3 0x14200 pgdaemon pagedaemon 10908 169556 0 0 3 0x14200 bored crynlk 7262 4801 0 0 3 0x14200 bored crypto 26334 261102 0 0 3 0x40014200 acpi0 acpi0 55731 24277 0 0 3 0x14200 bored softnet 76728 98254 0 0 3 0x14200 bored systqmp 88990 70580 0 0 3 0x14200 bored systq 54317 352746 0 0 3 0x40014200 bored softclock 67666 367841 0 0 3 0x40014200 idle0 1 229656 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 9440 6319K 6320K 78643K 10539 0 pcb 13 8K 8K 78643K 13 0 rtable 61 1K 2K 78643K 117 0 ifaddr 24 7K 7K 78643K 24 0 counters 19 16K 16K 78643K 19 0 ioctlops 1 4K 4K 78643K 15 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 1809 195K 288K 78643K 12938 0 file desc 1 0K 0K 78643K 1 0 proc 47 38K 46K 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 1K 78643K 151 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 56 2K 3K 78643K 690 0 UVM aobj 2 2K 2K 78643K 2 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 3025K 3089K 78643K 1425 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 80 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 264 5 0 5 2 2 0 1 0 8 0 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 22 0 16 1 0 1 1 0 8 0 pfrule 1360 2 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 1391 0 15 86 0 86 86 0 8 0 ffsino 240 1391 0 15 81 0 81 81 0 8 0 nchpl 144 1565 0 30 57 0 57 57 0 8 0 uvmvnodes 72 1400 0 0 26 0 26 26 0 8 0 vnodes 208 1400 0 0 74 0 74 74 0 8 0 namei 1024 3488 0 3488 3 2 1 1 0 8 1 scxspl 192 2816 0 2816 3 3 0 1 0 8 0 plimitpl 152 13 0 8 1 0 1 1 0 8 0 sigapl 424 191 0 166 4 0 4 4 0 8 0 futexpl 56 8 0 8 2 1 1 1 0 8 1 knotepl 112 5 0 0 1 0 1 1 0 8 0 kqueuepl 144 1 0 0 1 0 1 1 0 8 0 pipelkpl 16 57 0 53 2 1 1 1 0 8 0 pipepl 120 114 0 107 2 1 1 1 0 8 0 fdescpl 432 177 0 166 2 0 2 2 0 8 0 filepl 120 826 0 781 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 112 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 2 0 1 0 8 0 processpl 920 191 0 166 4 0 4 4 0 8 0 procpl 624 192 0 166 3 0 3 3 0 8 0 sockpl 400 64 0 48 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 2 2 0 1 0 8 0 mcl2k 2048 5944 0 5912 9 4 5 8 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 10169 0 10125 5 1 4 5 0 8 0 bufpl 280 1812 0 84 124 0 124 124 0 8 0 anonpl 16 17283 0 16137 7 2 5 7 0 107 0 amapchunkpl 152 468 0 430 2 0 2 2 0 158 0 amappl16 192 68 0 64 1 0 1 1 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 22 0 19 1 0 1 1 0 8 0 amappl13 168 12 0 11 2 1 1 1 0 8 0 amappl12 160 6 0 6 1 1 0 1 0 8 0 amappl11 152 38 0 29 1 0 1 1 0 8 0 amappl10 144 5 0 3 1 0 1 1 0 8 0 amappl9 136 198 0 197 1 0 1 1 0 8 0 amappl8 128 202 0 200 1 0 1 1 0 8 0 amappl7 120 81 0 72 1 0 1 1 0 8 0 amappl6 112 11 0 11 2 2 0 1 0 8 0 amappl5 104 190 0 181 1 0 1 1 0 8 0 amappl4 96 399 0 376 1 0 1 1 0 8 0 amappl3 88 97 0 91 1 0 1 1 0 8 0 amappl2 80 664 0 609 3 1 2 2 0 8 0 amappl1 72 12205 0 11810 16 7 9 16 0 8 0 amappl 80 355 0 335 1 0 1 1 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 1 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 5285 0 5268 1 0 1 1 0 8 0 vmmpepl 168 25723 0 24933 54 19 35 48 0 357 0 vmsppl 272 176 0 166 1 0 1 1 0 8 0 pdppl 4096 360 0 332 5 0 5 5 0 8 0 pvpl 32 70572 0 67814 31 8 23 26 0 265 0 pmappl 200 176 0 166 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 211 0 11 6 0 6 6 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(ffffffff82248b59) at panic+0x15c sys/kern/subr_prf.c:207 splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237 yield() at yield+0x6f sys/kern/sched_bsd.c:304 pool_get(ffffffff82584428,d) at pool_get+0x166 sys/kern/subr_pool.c:588 pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216 VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290 vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1 syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6ab108933d0, 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(ffffffff82248b59) at panic+0x15c sys/kern/subr_prf.c:207 splassert_fail(0,1,ffffffff8222174a) at splassert_fail+0x102 sys/kern/subr_prf.c:237 yield() at yield+0x6f sys/kern/sched_bsd.c:304 pool_get(ffffffff82584428,d) at pool_get+0x166 sys/kern/subr_pool.c:588 pfioctl(4900,cd604404,ffff8000006bf000,3,ffff80001d7a8390) at pfioctl+0x305e sys/net/pf_ioctl.c:1216 VOP_IOCTL(fffffd805dc40270,cd604404,ffff8000006bf000,3,fffffd806c3bfd20,ffff80001d7a8390) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:290 vn_ioctl(fffffd805d8cd4b8,cd604404,ffff8000006bf000,ffff80001d7a8390) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80001d7a8390,ffff80001d7ca668,ffff80001d7ca6b0) at sys_ioctl+0x4a1 syscall(ffff80001d7ca730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6ab108933d0, count: -11