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 *342138 59972 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(fffffd8056d7c690,1,fffffd806c3bfb40,0) at VOP_CLOSE+0x12f sys/kern/vfs_vops.c:170 vn_closefile(fffffd8061dfd438,0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8061dfd438,0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8061dfd438,0) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8061dfd438,0) 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(fffffd8056d7c690,1,fffffd806c3bfb40,0) at VOP_CLOSE+0x12f sys/kern/vfs_vops.c:170 vn_closefile(fffffd8061dfd438,0) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8061dfd438,0) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd8061dfd438,0) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8061dfd438,0) 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 0xffff80001d2fc870 rbx 0xffff80001d2fc920 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d2fc830 r9 0x1 r10 0 r11 0xdd0ffbe7b3289e4e r12 0x3000000008 r13 0xffff80001d2fc880 r14 0x100 r15 0x1 rip 0xffffffff813787c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d2fc860 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (systq) pid=342138 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d2e2380,0xffff80001d2e1760 process=0xffff8000ffffe730 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 43766 31784 35428 0 2 0 syz-executor.0 43766 190399 35428 0 3 0x4000080 netio syz-executor.0 91894 104564 95120 0 2 0x482 syz-executor.1 35428 340664 95120 0 2 0x482 syz-executor.0 95120 211428 60219 0 3 0x82 thrsleep syz-fuzzer 95120 468159 60219 0 3 0x4000082 thrsleep syz-fuzzer 95120 92966 60219 0 3 0x4000082 kqread syz-fuzzer 95120 445570 60219 0 3 0x4000082 thrsleep syz-fuzzer 95120 142794 60219 0 3 0x4000082 thrsleep syz-fuzzer 95120 121708 60219 0 3 0x4000082 thrsleep syz-fuzzer 95120 406171 60219 0 3 0x4000082 thrsleep syz-fuzzer 60219 452994 27139 0 3 0x10008a pause ksh 27139 443182 57446 0 3 0x92 select sshd 65765 227493 1 0 3 0x100083 ttyin getty 57446 482962 1 0 3 0x80 select sshd 6584 236932 80511 73 3 0x100090 kqread syslogd 80511 110354 1 0 3 0x100082 netio syslogd 29237 62384 1 77 3 0x100090 poll dhclient 30692 396981 1 0 3 0x80 poll dhclient 91947 456410 0 0 3 0x14200 bored smr 3656 429012 0 0 2 0x14200 zerothread 83429 54431 0 0 3 0x14200 aiodoned aiodoned 35261 215591 0 0 3 0x14200 syncer update 69868 480779 0 0 3 0x14200 cleaner cleaner 75449 495746 0 0 3 0x14200 reaper reaper 78306 349481 0 0 3 0x14200 pgdaemon pagedaemon 70572 517077 0 0 3 0x14200 bored crynlk 13581 433667 0 0 3 0x14200 bored crypto 11739 360842 0 0 3 0x40014200 acpi0 acpi0 86085 156364 0 0 3 0x14200 bored softnet 13 166601 0 0 3 0x14200 bored systqmp *59972 342138 0 0 7 0x14200 systq 56129 327249 0 0 3 0x40014200 bored softclock 53073 413695 0 0 3 0x40014200 idle0 1 456297 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 6391K 6775K 78643K 10582 0 pcb 13 8K 8K 78643K 17 0 rtable 111 3K 3K 78643K 199 0 ifaddr 45 10K 10K 78643K 45 0 counters 21 16K 16K 78643K 21 0 ioctlops 0 0K 2K 78643K 17 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1229 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 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 42 0 proc 47 38K 54K 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 in_multi 33 2K 2K 78643K 33 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 181 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 90 20K 21K 78643K 903 0 UVM aobj 6 2K 2K 78643K 6 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 10 0K 0K 78643K 10 0 temp 67 3027K 3091K 78643K 1833 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 7 0 0 1 0 1 1 0 8 0 rtpcb 80 19 0 17 1 0 1 1 0 8 0 rtentry 112 48 0 1 2 0 2 2 0 8 0 unpcb 120 38 0 26 1 0 1 1 0 8 0 syncache 264 4 0 4 1 0 1 1 0 8 1 tcpqe 32 121 0 121 1 0 1 1 0 8 1 tcpcb 544 12 0 8 1 0 1 1 0 8 0 inpcb 280 38 0 31 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 256 200 0 0 13 0 13 13 0 8 0 art_table 32 201 0 0 2 0 2 2 0 8 0 art_node 16 47 0 4 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1427 0 27 46 0 46 46 0 8 0 ffsino 240 1427 0 27 83 0 83 83 0 8 0 nchpl 144 1667 0 55 60 0 60 60 0 8 0 uvmvnodes 72 1477 0 0 27 0 27 27 0 8 0 vnodes 208 1477 0 0 78 0 78 78 0 8 0 namei 1024 3965 0 3965 1 0 1 1 0 8 1 scxspl 192 4694 0 4694 1 0 1 1 0 8 1 plimitpl 152 14 0 7 1 0 1 1 0 8 0 sigapl 424 228 0 200 4 0 4 4 0 8 0 futexpl 56 216 0 216 1 0 1 1 0 8 1 knotepl 112 53 0 34 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 16 67 0 57 1 0 1 1 0 8 0 pipepl 120 134 0 115 1 0 1 1 0 8 0 fdescpl 432 214 0 200 2 0 2 2 0 8 0 filepl 120 1041 0 938 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 40 0 33 1 0 1 1 0 8 0 zombiepl 144 200 0 199 1 0 1 1 0 8 0 processpl 920 228 0 199 4 0 4 4 0 8 0 procpl 624 243 0 207 3 0 3 3 0 8 0 sockpl 400 95 0 74 3 0 3 3 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 59324 0 59277 17 2 15 15 0 8 6 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 94280 0 94205 10 1 9 9 0 8 2 bufpl 280 3970 0 160 273 0 273 273 0 8 0 anonpl 16 33653 0 20835 54 2 52 52 0 107 0 amapchunkpl 152 973 0 840 8 0 8 8 0 158 2 amappl16 192 827 0 140 35 0 35 35 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 7 0 4 2 1 1 1 0 8 0 amappl13 168 23 0 22 1 0 1 1 0 8 0 amappl12 160 9 0 8 2 1 1 1 0 8 0 amappl11 152 70 0 57 1 0 1 1 0 8 0 amappl10 144 13 0 9 1 0 1 1 0 8 0 amappl9 136 384 0 381 1 0 1 1 0 8 0 amappl8 128 255 0 242 1 0 1 1 0 8 0 amappl7 120 106 0 95 1 0 1 1 0 8 0 amappl6 112 17 0 16 1 0 1 1 0 8 0 amappl5 104 138 0 129 1 0 1 1 0 8 0 amappl4 96 442 0 411 1 0 1 1 0 8 0 amappl3 88 109 0 101 1 0 1 1 0 8 0 amappl2 80 907 0 844 3 0 3 3 0 8 1 amappl1 72 13763 0 13353 26 9 17 20 0 8 8 amappl 80 463 0 422 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 214 0 200 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 214 0 200 1 0 1 1 0 8 0 vmmpekpl 168 5630 0 5605 2 0 2 2 0 8 0 vmmpepl 168 32738 0 31018 106 6 100 100 0 357 21 vmsppl 272 213 0 200 2 0 2 2 0 8 1 pdppl 4096 434 0 400 6 0 6 6 0 8 1 pvpl 32 119558 0 103816 130 0 130 130 0 265 2 pmappl 200 213 0 200 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 146 0 5 5 0 5 5 0 8 0