@.[À  @panic: kernel diagnostic assertion "tname->un_flags & UNVEIL_USERSET" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_unveil.c", line 879 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *298328 42915 0 0 0x4000000 0 syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:208 __assert(ffffffff81f459f9,ffffffff81ef283c,36f,ffffffff81f53e28) at __assert+0x2e sys/kern/subr_prf.c:155 unveil_check_final(ffff800014a01080,ffff800014a35b88) at unveil_check_final+0x805 sys/kern/kern_unveil.c:879 namei(ffff800014a35b88) at namei+0x88a sys/kern/vfs_lookup.c:232 dosymlinkat(ffff800014a01080,20000040,3,200000c0) at dosymlinkat+0xcd sys/kern/vfs_syscalls.c:1613 syscall(ffff800014a35e40) at syscall+0x541 Xsyscall(6,0,fffffffffffffffe,0,3,5bbb9134010) at Xsyscall+0x128 end of kernel end trace frame: 0x5be6ca27760, count: 7 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 "tname->un_flags & UNVEIL_USERSET" failed: file "/syzkaller/managers/main/kernel/sys/kern/kern_unveil.c", line 879 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:208 __assert(ffffffff81f459f9,ffffffff81ef283c,36f,ffffffff81f53e28) at __assert+0x2e sys/kern/subr_prf.c:155 unveil_check_final(ffff800014a01080,ffff800014a35b88) at unveil_check_final+0x805 sys/kern/kern_unveil.c:879 namei(ffff800014a35b88) at namei+0x88a sys/kern/vfs_lookup.c:232 dosymlinkat(ffff800014a01080,20000040,3,200000c0) at dosymlinkat+0xcd sys/kern/vfs_syscalls.c:1613 syscall(ffff800014a35e40) at syscall+0x541 Xsyscall(6,0,fffffffffffffffe,0,3,5bbb9134010) at Xsyscall+0x128 end of kernel end trace frame: 0x5be6ca27760, count: -8 ddb> show registers rdi 0xffffffff81c210d7 db_enter+0x17 rsi 0x40d3 __ALIGN_SIZE+0x30d3 rbp 0xffff800014a35920 rbx 0xffff800014a359d0 rdx 0x40d4 __ALIGN_SIZE+0x30d4 rcx 0xffff800001b3c000 rax 0xffff800001b3c000 r8 0xffff800014a358e0 r9 0x1 r10 0xffff800001b3b2c0 r11 0xf2a9b22e8f00eb62 r12 0x3000000008 r13 0xffff800014a35930 r14 0x100 r15 0x1 rip 0xffffffff81c210d8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800014a35910 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) pid=298328 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800014a004c8,0xffffffff82252c30 process=0xffff8000ffff73c0 user=0xffff800014a30000, vmspace=0xfffffd803f014000 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 42915 240891 25576 0 2 0 syz-executor.1 *42915 298328 25576 0 7 0x4000000 syz-executor.1 18824 158788 81761 0 2 0 syz-executor.0 18824 459453 81761 0 3 0x4000080 fsleep syz-executor.0 81761 218126 72577 0 2 0x482 syz-executor.0 25576 178722 72577 0 2 0x482 syz-executor.1 36455 7826 1 0 3 0x100083 ttyopn getty 43981 237712 0 0 3 0x14200 bored sosplice 72577 369227 21200 0 3 0x82 thrsleep syz-fuzzer 72577 515158 21200 0 3 0x4000082 thrsleep syz-fuzzer 72577 355078 21200 0 3 0x4000082 thrsleep syz-fuzzer 72577 272983 21200 0 3 0x4000082 thrsleep syz-fuzzer 72577 192454 21200 0 3 0x4000082 thrsleep syz-fuzzer 72577 496341 21200 0 3 0x4000082 thrsleep syz-fuzzer 72577 146708 21200 0 3 0x4000082 thrsleep syz-fuzzer 72577 487214 21200 0 3 0x4000082 kqread syz-fuzzer 21200 74904 64559 0 3 0x10008a pause ksh 64559 97458 91916 0 3 0x92 select sshd 91916 335403 1 0 3 0x80 select sshd 26337 339181 20852 73 3 0x100090 kqread syslogd 20852 418037 1 0 3 0x100082 netio syslogd 53429 60409 1 77 3 0x100090 poll dhclient 10695 16693 1 0 3 0x80 poll dhclient 4785 143577 0 0 2 0x14200 zerothread 88486 180694 0 0 3 0x14200 aiodoned aiodoned 45680 388890 0 0 3 0x14200 syncer update 63191 207931 0 0 3 0x14200 cleaner cleaner 46963 228440 0 0 3 0x14200 reaper reaper 22674 58024 0 0 3 0x14200 pgdaemon pagedaemon 90101 40232 0 0 3 0x14200 bored crynlk 61359 328425 0 0 3 0x14200 bored crypto 99865 286277 0 0 3 0x40014200 acpi0 acpi0 93889 311375 0 0 3 0x14200 bored softnet 7623 50096 0 0 3 0x14200 bored systqmp 4219 279930 0 0 3 0x14200 bored systq 25558 371069 0 0 3 0x40014200 bored softclock 40319 381268 0 0 3 0x40014200 idle0 44613 290793 0 0 3 0x14200 bored smr 1 371652 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 Kern Lim devbuf 9552 6365K 6378K 78643K 11908 0 0 pcb 23 9K 10K 78643K 1900 0 0 rtable 109 4K 4K 78643K 1803 0 0 ifaddr 75 18K 20K 78643K 654 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 89 0 0 iov 0 0K 24K 78643K 515 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1183 74K 75K 78643K 2965 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 52 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 1K 78643K 603 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12537 0 0 file desc 6 17K 21K 78643K 3410 0 0 sigio 0 0K 0K 78643K 57 0 0 proc 45 38K 46K 78643K 1202 0 0 subproc 64 65538K 67586K 78643K 924 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 438 0 0 in_multi 33 2K 2K 78643K 429 0 0 ether_multi 1 0K 0K 78643K 14 0 0 mrt 1 0K 0K 78643K 5 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 108 477K 477K 78643K 108 0 0 exec 0 0K 1K 78643K 640 0 0 pfkey data 0 0K 0K 78643K 5 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 85 20K 39K 78643K 8915 0 0 UVM aobj 130 8K 8K 78643K 151 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 201 0 0 NDP 17 0K 0K 78643K 212 0 0 temp 208 2360K 2488K 78643K 13832 0 0 kqueue 0 0K 0K 78643K 33 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 29 0 25 1 0 1 1 0 8 0 inpcbpl 280 1749 0 1742 1 0 1 1 0 8 0 plimitpl 152 133 0 126 1 0 1 1 0 8 0 rtentry 112 272 0 232 3 1 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 6 0 6 1 1 0 1 0 8 0 tcpcb 544 646 0 642 1 0 1 1 0 8 0 nd6 48 54 0 50 2 1 1 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 88 0 87 19 18 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1250 0 1058 17 4 13 13 0 8 0 art_table 32 1251 0 1058 3 1 2 2 0 8 0 art_node 16 265 0 231 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 6 1 0 1 1 0 8 0 semapl 112 599 0 589 1 0 1 1 0 8 0 shmpl 112 149 0 21 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 7204 0 5676 50 0 50 50 0 8 0 ffsino 240 7204 0 5676 91 0 91 91 0 8 0 nchpl 144 12341 0 10640 66 2 64 64 0 8 0 uvmvnodes 72 6926 0 0 126 0 126 126 0 8 0 vnodes 200 6926 0 0 365 0 365 365 0 8 0 namei 1024 39530 0 39528 3 2 1 1 0 8 0 scsiplug 64 5 0 5 4 4 0 1 0 8 0 scxspl 192 48734 0 48734 35 34 1 6 0 8 1 sigapl 432 3508 0 3494 2 0 2 2 0 8 0 futexpl 56 57964 0 57963 2 1 1 1 0 8 0 knotepl 112 1363 0 1344 1 0 1 1 0 8 0 kqueuepl 104 1062 0 1060 1 0 1 1 0 8 0 pipepl 112 2462 0 2443 6 4 2 2 0 8 1 fdescpl 424 3509 0 3494 2 0 2 2 0 8 0 filepl 120 23389 0 23294 6 2 4 5 0 8 1 lockfpl 104 925 0 925 6 5 1 1 0 8 1 lockfspl 32 503 0 503 6 5 1 1 0 8 1 sessionpl 112 45 0 35 1 0 1 1 0 8 0 pgrppl 48 105 0 95 1 0 1 1 0 8 0 ucredpl 96 4772 0 4765 1 0 1 1 0 8 0 zombiepl 144 3494 0 3494 2 1 1 1 0 8 1 processpl 840 3524 0 3494 4 0 4 4 0 8 0 procpl 600 7719 0 7680 4 0 4 4 0 8 0 sosppl 128 42 0 42 14 14 0 1 0 8 0 sockpl 384 3419 0 3402 4 1 3 3 0 8 1 mcl64k 65536 338 0 338 41 40 1 29 0 8 1 mcl16k 16384 16 0 16 9 9 0 1 0 8 0 mcl12k 12288 86 0 86 15 15 0 1 0 8 0 mcl9k 9216 62 0 62 16 15 1 1 0 8 1 mcl8k 8192 67 0 67 16 16 0 1 0 8 0 mcl4k 4096 211 0 211 11 10 1 1 0 8 1 mcl2k2 2112 20 0 20 10 10 0 1 0 8 0 mcl2k 2048 52927 0 52887 16 10 6 12 0 8 0 mtagpl 80 4 0 4 2 2 0 1 0 8 0 mbufpl 256 107158 0 107074 36 29 7 20 0 8 0 bufpl 256 16696 0 9720 437 0 437 437 0 8 0 anonpl 16 403980 0 396405 163 121 42 53 0 62 0 amapchunkpl 152 14886 0 14803 37 33 4 14 0 158 0 amappl16 192 21744 0 21254 199 172 27 38 0 8 2 amappl15 184 697 0 693 1 0 1 1 0 8 0 amappl14 176 392 0 390 2 1 1 1 0 8 0 amappl13 168 58 0 53 1 0 1 1 0 8 0 amappl12 160 454 0 451 1 0 1 1 0 8 0 amappl11 152 631 0 620 1 0 1 1 0 8 0 amappl10 144 1121 0 1117 1 0 1 1 0 8 0 amappl9 136 1141 0 1137 1 0 1 1 0 8 0 amappl8 128 724 0 700 1 0 1 1 0 8 0 amappl7 120 1007 0 1000 1 0 1 1 0 8 0 amappl6 112 678 0 671 1 0 1 1 0 8 0 amappl5 104 534 0 523 1 0 1 1 0 8 0 amappl4 96 3537 0 3506 2 1 1 2 0 8 0 amappl3 88 739 0 734 1 0 1 1 0 8 0 amappl2 80 29814 0 29754 2 0 2 2 0 8 0 amappl1 72 71925 0 71507 26 17 9 19 0 8 0 amappl 72 8115 0 8081 1 0 1 1 0 75 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 dma64 64 259 0 259 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 64 150 0 21 3 0 3 3 0 8 0 uaddrrnd 24 3509 0 3494 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3509 0 3494 1 0 1 1 0 8 0 vmmpekpl 168 26778 0 26759 2 0 2 2 0 8 0 vmmpepl 168 378699 0 377193 230 150 80 84 0 357 8 vmsppl 264 3508 0 3494 6 5 1 2 0 8 0 pdppl 4096 7024 0 6988 5 0 5 5 0 8 0 pvpl 32 1285715 0 1274861 398 286 112 230 0 265 5 pmappl 192 3508 0 3494 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 689 0 122 18 1 17 18 0 8 0