"*"*panic: attempt WtAoR eNIxNeGc:u tSeP uL seNOrT a LddOrWEesRsE D 0Ox0N iSYn SCsAuLpLe rv3i 4s orEX ImTo d0 e9 Stopped at savectx+0xb1: movl $0,%gs:0x530 TID PID UID PRFLAGS PFLAGS CPU COMMAND 114367 61032 0 0 0x4000000 0 syz-executor.1 * 33609 75506 74 0x100012 0 1 pflogd savectx(6,0,180fcc1918b0,3,180d65b03b16,180ffb5dc000) at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffd6040, count: 14 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 attempt to execute user address 0x0 in supervisor mode ddb{1}> trace savectx(6,0,180fcc1918b0,3,180d65b03b16,180ffb5dc000) at savectx+0xb1 end of kernel end trace frame: 0x7f7ffffd6040, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800020aab4f0 rbx 0 rdx 0xffff800020ac0010 rcx 0 rax 0x31 r8 0xffffffff8154a38f kprintf+0x16f r9 0x1 r10 0x25 r11 0x67a614dafad1722b r12 0 r13 0 r14 0xffff800020ac0010 r15 0 rip 0xffffffff817563f1 savectx+0xb1 cs 0x8 rflags 0x46 rsp 0xffff800020aab470 ss 0x10 savectx+0xb1: movl $0,%gs:0x530 ddb{1}> show proc PROC (pflogd) pid=33609 stat=onproc flags process=100012 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac1158,0xffff800020ac13e0 process=0xffff800020adc000 user=0xffff800020aa6000, vmspace=0xfffffd806e7df2e8 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61032 327655 48566 0 2 0 syz-executor.1 61032 114367 48566 0 7 0x4000000 syz-executor.1 48566 379050 92923 0 2 0x482 syz-executor.1 2171 397553 0 0 3 0x14200 acct acct 13995 513465 92923 0 2 0x482 syz-executor.0 78504 352713 0 0 3 0x14200 bored sosplice 92923 323140 97254 0 3 0x82 kqread syz-fuzzer 92923 30878 97254 0 3 0x4000082 thrsleep syz-fuzzer 92923 255709 97254 0 3 0x4000082 thrsleep syz-fuzzer 92923 448938 97254 0 3 0x4000082 thrsleep syz-fuzzer 92923 522417 97254 0 3 0x4000082 thrsleep syz-fuzzer 92923 293842 97254 0 3 0x4000082 thrsleep syz-fuzzer 92923 358836 97254 0 3 0x4000082 thrsleep syz-fuzzer 92923 465578 97254 0 3 0x4000082 thrsleep syz-fuzzer 92923 511916 97254 0 3 0x4000082 thrsleep syz-fuzzer 92923 475993 97254 0 3 0x4000082 thrsleep syz-fuzzer 97254 256046 20434 0 3 0x10008a pause ksh 20434 442215 52950 0 3 0x92 select sshd 54740 264376 1 0 3 0x100083 ttyin getty 52950 389645 1 0 3 0x80 select sshd *75506 33609 27410 74 7 0x100012 pflogd 27410 280130 1 0 3 0x80 netio pflogd 6317 218285 82061 73 3 0x100090 kqread syslogd 82061 75226 1 0 3 0x100082 netio syslogd 72423 511821 1 77 3 0x100090 poll dhclient 54995 457402 1 0 3 0x80 poll dhclient 52352 166612 0 0 3 0x14200 pgzero zerothread 43678 36436 0 0 3 0x14200 aiodoned aiodoned 37011 367110 0 0 3 0x14200 syncer update 3410 351243 0 0 3 0x14200 cleaner cleaner 2505 421090 0 0 3 0x14200 reaper reaper 95521 203062 0 0 3 0x14200 pgdaemon pagedaemon 84366 338537 0 0 3 0x14200 bored crynlk 22870 22869 0 0 3 0x14200 bored crypto 60797 295677 0 0 3 0x40014200 acpi0 acpi0 22758 306200 0 0 3 0x40014200 idle1 4956 467292 0 0 3 0x14200 bored softnet 95857 213127 0 0 3 0x14200 bored systqmp 66130 353217 0 0 3 0x14200 bored systq 4986 177745 0 0 2 0x40014200 softclock 12324 226260 0 0 3 0x40014200 idle0 51920 107782 0 0 3 0x14200 bored smr 1 245069 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 61032 (syz-executor.1) thread 0xffff800020acf8d0 (114367) exclusive rwlock netlock r = 0 (0xffffffff824663c8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 uvn_io+0x3b2 sys/uvm/uvm_vnode.c:1206 #2 uvn_get+0x226 sys/uvm/uvm_vnode.c:1049 #3 uvm_fault+0x11cc sys/uvm/uvm_fault.c:1023 #4 pageflttrap+0x20b sys/arch/amd64/amd64/trap.c:199 #5 kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 #6 alltraps_kern_meltdown+0x7b #7 copyin+0x4b #8 sys_connect+0x9c sys/kern/uipc_syscalls.c:367 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 2 (0xffffffff82646680) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9577 7092K 7932K 78643K 13496 0 0 pcb 13 8K 8K 78643K 271 0 0 rtable 108 13K 14K 78643K 1015 0 0 ifaddr 77 16K 17K 78643K 308 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1523 0 0 iov 0 0K 18K 78643K 2280 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1218 76K 77K 78643K 2280 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 12 0 0 VM map 15 7K 8K 78643K 18 0 0 sem 12 0K 1K 78643K 413 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 1277 0 0 sigio 0 0K 0K 78643K 29 0 0 proc 60 63K 95K 78643K 740 0 0 subproc 32 2K 2K 78643K 121 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 115 0 0 in_multi 23 1K 2K 78643K 170 0 0 ether_multi 1 0K 0K 78643K 9 0 0 mrt 0 0K 0K 78643K 2 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 434 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 131 120K 136K 78643K 5606 0 0 UVM aobj 64 5K 5K 78643K 66 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 271 0 0 NDP 18 0K 0K 78643K 94 0 0 temp 214 3560K 4200K 78643K 27670 0 0 kqueue 0 0K 0K 78643K 14 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 31 0 25 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 123 0 121 1 0 1 1 0 8 0 rtentry 112 173 0 135 2 0 2 2 0 8 0 unpcb 120 742 0 728 1 0 1 1 0 8 0 syncache 264 19 0 19 6 6 0 1 0 8 0 tcpqe 32 30 0 30 3 3 0 1 0 8 0 tcpcb 544 514 0 507 1 0 1 1 0 8 0 inpcb 280 1917 0 1908 3 1 2 3 0 8 1 nd6 48 21 0 19 2 1 1 1 0 8 0 pkpcb 40 15 0 15 3 3 0 1 0 8 0 ppxss 1128 30 0 30 5 4 1 1 0 8 1 pffrag 232 33 0 33 5 4 1 1 0 482 1 pffrnode 88 33 0 33 5 4 1 1 0 8 1 pffrent 40 869 0 869 5 4 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 123 0 44 1 0 1 1 0 8 0 pfstkey 112 123 0 44 3 0 3 3 0 8 0 pfstate 328 123 0 44 7 0 7 7 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 4 0 3 4 3 1 3 0 8 0 art_heap4 256 735 0 545 21 7 14 16 0 8 2 art_table 32 739 0 548 3 0 3 3 0 8 1 art_node 16 172 0 137 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 9 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 411 0 401 1 0 1 1 0 8 0 shmpl 112 64 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3365 0 1961 46 0 46 46 0 8 0 ffsino 272 3365 0 1961 96 1 95 95 0 8 0 nchpl 144 6184 0 4575 61 0 61 61 0 8 0 uvmvnodes 72 4158 0 0 76 0 76 76 0 8 0 vnodes 208 4158 0 0 219 0 219 219 0 8 0 namei 1024 19772 0 19772 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 13 0 0 2 0 2 2 0 8 0 vmpool 552 16 0 3 1 0 1 1 0 8 0 scxspl 192 17700 0 17700 13 10 3 7 0 8 3 plimitpl 152 96 0 88 1 0 1 1 0 8 0 sigapl 432 1462 0 1447 3 1 2 3 0 8 0 futexpl 56 30863 0 30863 1 0 1 1 0 8 1 knotepl 112 343 0 324 3 2 1 3 0 8 0 kqueuepl 104 312 0 310 1 0 1 1 0 8 0 pipepl 112 886 0 867 5 4 1 2 0 8 0 fdescpl 488 1463 0 1447 3 0 3 3 0 8 0 filepl 152 13077 0 12975 9 3 6 8 0 8 2 lockfpl 104 470 0 469 1 0 1 1 0 8 0 lockfspl 48 165 0 164 1 0 1 1 0 8 0 sessionpl 112 23 0 12 1 0 1 1 0 8 0 pgrppl 48 41 0 30 1 0 1 1 0 8 0 ucredpl 96 1366 0 1357 1 0 1 1 0 8 0 zombiepl 144 1449 0 1448 1 0 1 1 0 8 0 processpl 896 1482 0 1448 4 0 4 4 0 8 0 procpl 632 4538 0 4494 5 0 5 5 0 8 0 srpgc 64 6 0 6 2 2 0 1 0 8 0 sosppl 128 19 0 19 5 4 1 1 0 8 1 sockpl 384 2807 0 2782 9 4 5 5 0 8 1 mcl64k 65536 26 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 180 0 0 22 0 22 22 0 8 0 mtagpl 80 24 0 0 1 0 1 1 0 8 0 mbufpl 256 471 0 0 26 0 26 26 0 8 0 bufpl 256 10530 0 3482 441 0 441 441 0 8 0 anonpl 16 180760 0 162958 98 21 77 92 0 124 0 amapchunkpl 152 10073 0 9951 28 15 13 13 0 158 6 amappl16 192 8377 0 7332 81 27 54 64 0 8 1 amappl14 176 65 0 62 1 0 1 1 0 8 0 amappl13 168 48 0 46 1 0 1 1 0 8 0 amappl12 160 409 0 404 1 0 1 1 0 8 0 amappl11 152 277 0 261 1 0 1 1 0 8 0 amappl10 144 28 0 26 1 0 1 1 0 8 0 amappl9 136 1073 0 1064 1 0 1 1 0 8 0 amappl8 128 620 0 588 2 0 2 2 0 8 0 amappl7 120 62 0 55 1 0 1 1 0 8 0 amappl6 112 300 0 286 1 0 1 1 0 8 0 amappl5 104 578 0 564 1 0 1 1 0 8 0 amappl4 96 1665 0 1633 1 0 1 1 0 8 0 amappl3 88 265 0 260 1 0 1 1 0 8 0 amappl2 80 10502 0 10427 3 1 2 3 0 8 0 amappl1 72 42700 0 42265 25 15 10 20 0 8 0 amappl 80 4898 0 4851 3 1 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 65 0 2 2 0 2 2 0 8 0 uaddrrnd 24 1479 0 1447 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1479 0 1447 1 0 1 1 0 8 0 vmmpekpl 168 15736 0 15696 3 1 2 3 0 8 0 vmmpepl 168 190239 0 188018 184 46 138 138 0 357 35 vmsppl 368 1462 0 1447 2 0 2 2 0 8 0 pdppl 4096 2965 0 2913 7 0 7 7 0 8 0 pvpl 32 489039 0 468296 230 41 189 219 0 265 11 pmappl 232 1478 0 1450 3 1 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 638 0 14 18 0 18 18 0 8 0