login: panic: kernel diagnostic assertion "p == curproc" failed: file "/syzkaller/managers/main/kernel/sys/kern/vfs_vops.c", line 169 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *407046 20521 0 0x14000 0x200 0 systq db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821d5d2f) at panic+0x15c sys/kern/subr_prf.c:207 __assert(ffffffff8222900d,ffffffff8225c86f,a9,ffffffff82208fd2) at __assert+0x2b sys/kern/subr_prf.c:154 VOP_CLOSE(fffffd8053bf85c8,1,fffffd806c3bfb40,0) at VOP_CLOSE+0x12f sys/kern/vfs_vops.c:170 vn_closefile(fffffd80539d2018,0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80539d2018,0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80539d2018,0) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd80539d2018,0) at closef+0x117 sys/kern/kern_descrip.c:1260 unp_gc(0) at unp_gc+0x172 sys/kern/uipc_usrreq.c:944 taskq_thread(ffffffff824bcfd0) at taskq_thread+0x52 sys/kern/kern_task.c:370 end trace frame: 0x0, count: 6 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 kernel diagnostic assertion "p == curproc" failed: file "/syzkaller/managers/main/kernel/sys/kern/vfs_vops.c", line 169 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821d5d2f) at panic+0x15c sys/kern/subr_prf.c:207 __assert(ffffffff8222900d,ffffffff8225c86f,a9,ffffffff82208fd2) at __assert+0x2b sys/kern/subr_prf.c:154 VOP_CLOSE(fffffd8053bf85c8,1,fffffd806c3bfb40,0) at VOP_CLOSE+0x12f sys/kern/vfs_vops.c:170 vn_closefile(fffffd80539d2018,0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80539d2018,0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd80539d2018,0) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd80539d2018,0) at closef+0x117 sys/kern/kern_descrip.c:1260 unp_gc(0) at unp_gc+0x172 sys/kern/uipc_usrreq.c:944 taskq_thread(ffffffff824bcfd0) at taskq_thread+0x52 sys/kern/kern_task.c:370 end trace frame: 0x0, count: -9 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d2fc380 rbx 0xffff80001d2fc430 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d2fc340 r9 0x1 r10 0 r11 0xbba0cd1fee43a544 r12 0x3000000008 r13 0xffff80001d2fc390 r14 0x100 r15 0x1 rip 0xffffffff813787c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d2fc370 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (systq) pid=407046 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d2e25f0,0xffff80001d2e1c40 process=0xffff8000ffffe398 user=0xffff80001d2f7000, vmspace=0xffffffff82589be8 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46600 429825 63921 0 3 0x80 nanosleep syz-executor.0 46600 55630 63921 0 3 0x4000080 netio syz-executor.0 46600 472186 63921 0 3 0x4000080 fsleep syz-executor.0 63542 393552 0 0 3 0x14200 bored sosplice 63921 70729 13915 0 3 0x82 nanosleep syz-executor.0 54558 20781 13915 0 2 0x482 syz-executor.1 13915 201401 2728 0 3 0x82 thrsleep syz-fuzzer 13915 113269 2728 0 3 0x4000082 thrsleep syz-fuzzer 13915 403083 2728 0 3 0x4000082 thrsleep syz-fuzzer 13915 199980 2728 0 3 0x4000082 thrsleep syz-fuzzer 13915 184212 2728 0 3 0x4000082 thrsleep syz-fuzzer 13915 514665 2728 0 3 0x4000082 kqread syz-fuzzer 13915 450771 2728 0 3 0x4000082 thrsleep syz-fuzzer 2728 173870 18817 0 3 0x10008a pause ksh 18817 152227 29166 0 3 0x92 select sshd 82960 423292 1 0 3 0x100083 ttyin getty 29166 17681 1 0 3 0x80 select sshd 39134 249206 1959 73 3 0x100090 kqread syslogd 1959 52142 1 0 3 0x100082 netio syslogd 64260 110021 1 77 3 0x100090 poll dhclient 24430 129870 1 0 3 0x80 poll dhclient 5281 165938 0 0 3 0x14200 bored smr 44926 191937 0 0 2 0x14200 zerothread 1396 249394 0 0 3 0x14200 aiodoned aiodoned 30223 332256 0 0 3 0x14200 syncer update 49181 54778 0 0 3 0x14200 cleaner cleaner 8916 460191 0 0 3 0x14200 reaper reaper 12513 361604 0 0 3 0x14200 pgdaemon pagedaemon 18188 457960 0 0 3 0x14200 bored crynlk 2761 80333 0 0 3 0x14200 bored crypto 85113 338021 0 0 3 0x40014200 acpi0 acpi0 97102 466013 0 0 3 0x14200 bored softnet 60441 434342 0 0 3 0x14200 bored systqmp *20521 407046 0 0 7 0x14200 systq 18402 355892 0 0 3 0x40014200 bored softclock 52012 291122 0 0 3 0x40014200 idle0 1 305549 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 9458 6327K 6455K 78643K 10580 0 pcb 13 8K 8K 78643K 23 0 rtable 105 3K 3K 78643K 199 0 ifaddr 44 10K 10K 78643K 49 0 counters 21 16K 16K 78643K 22 0 ioctlops 0 0K 2K 78643K 15 0 iov 0 0K 24K 78643K 4 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1230 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 0K 0K 78643K 2 0 sem 8 0K 0K 78643K 8 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 54 0 sigio 0 0K 0K 78643K 2 0 proc 47 38K 63K 78643K 358 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 2 0 in_multi 33 2K 2K 78643K 36 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 25 122K 122K 78643K 25 0 exec 0 0K 1K 78643K 183 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 88 20K 21K 78643K 941 0 UVM aobj 8 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 8 0 NDP 6 0K 0K 78643K 11 0 temp 66 3027K 3091K 78643K 1851 0 kqueue 3 4K 4K 78643K 3 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 6 0 0 1 0 1 1 0 8 0 rtpcb 80 19 0 17 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 35 0 21 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 134 0 134 1 0 1 1 0 8 1 tcpcb 544 24 0 20 1 0 1 1 0 8 0 inpcb 280 64 0 57 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 187 0 0 12 0 12 12 0 8 0 art_table 32 188 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 6 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1449 0 49 46 0 46 46 0 8 0 ffsino 240 1449 0 49 83 0 83 83 0 8 0 nchpl 144 1703 0 90 60 0 60 60 0 8 0 uvmvnodes 72 1495 0 0 28 0 28 28 0 8 0 vnodes 208 1495 0 0 79 0 79 79 0 8 0 namei 1024 4108 0 4108 1 0 1 1 0 8 1 scxspl 192 4794 0 4794 1 0 1 1 0 8 1 plimitpl 152 15 0 7 1 0 1 1 0 8 0 sigapl 424 241 0 212 4 0 4 4 0 8 0 futexpl 56 574 0 573 1 0 1 1 0 8 0 knotepl 112 53 0 34 1 0 1 1 0 8 0 kqueuepl 144 10 0 8 1 0 1 1 0 8 0 pipelkpl 16 65 0 55 1 0 1 1 0 8 0 pipepl 120 130 0 111 1 0 1 1 0 8 0 fdescpl 432 226 0 212 2 0 2 2 0 8 0 filepl 120 1137 0 1030 4 0 4 4 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 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 43 0 36 1 0 1 1 0 8 0 zombiepl 144 212 0 211 1 0 1 1 0 8 0 processpl 920 241 0 211 4 0 4 4 0 8 0 procpl 624 283 0 245 4 0 4 4 0 8 0 sockpl 400 118 0 95 3 0 3 3 0 8 0 mcl64k 65536 2 0 2 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 1 0 1 1 0 1 1 0 8 1 mcl4k 4096 9 0 9 2 1 1 1 0 8 1 mcl2k 2048 61601 0 61553 18 3 15 15 0 8 8 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 97463 0 97392 11 1 10 10 0 8 1 bufpl 280 3979 0 156 274 0 274 274 0 8 0 anonpl 16 34428 0 21576 54 2 52 52 0 107 0 amapchunkpl 152 1079 0 949 8 0 8 8 0 158 2 amappl16 192 872 0 182 35 0 35 35 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 17 0 13 2 1 1 1 0 8 0 amappl13 168 23 0 22 1 0 1 1 0 8 0 amappl12 160 5 0 5 1 1 0 1 0 8 0 amappl11 152 63 0 50 1 0 1 1 0 8 0 amappl10 144 17 0 12 1 0 1 1 0 8 0 amappl9 136 393 0 389 1 0 1 1 0 8 0 amappl8 128 266 0 256 1 0 1 1 0 8 0 amappl7 120 106 0 95 1 0 1 1 0 8 0 amappl6 112 19 0 17 1 0 1 1 0 8 0 amappl5 104 150 0 141 1 0 1 1 0 8 0 amappl4 96 440 0 411 1 0 1 1 0 8 0 amappl3 88 113 0 106 1 0 1 1 0 8 0 amappl2 80 1009 0 944 3 1 2 3 0 8 0 amappl1 72 13941 0 13529 26 12 14 20 0 8 5 amappl 80 502 0 460 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 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 226 0 212 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 226 0 212 1 0 1 1 0 8 0 vmmpekpl 168 5672 0 5648 2 0 2 2 0 8 0 vmmpepl 168 34177 0 32446 104 6 98 98 0 357 18 vmsppl 272 225 0 212 2 0 2 2 0 8 1 pdppl 4096 458 0 424 6 0 6 6 0 8 1 pvpl 32 123525 0 107723 129 0 129 129 0 265 1 pmappl 200 225 0 212 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 151 0 7 5 0 5 5 0 8 0