*cpu0: uvm_fault(0xfffffd8067f775d8, 0x8, 0, 1) -> e cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 673 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a8c2b) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261dea1,ffffffff825e7f98,2a1,ffffffff825d9635) at __assert+0x25 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: -4 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e4a4720 rbx 0xffff800020dd9b8f rdx 0 rcx 0 rax 0xffff8000275d9510 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9273d139dc3a5381 r11 0xea81d8df90a429c4 r12 0xffff800020dd9990 r13 0 r14 0xffffffff829d7990 cpu_info_full_primary+0x2990 r15 0x1 rip 0xffffffff82446df8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e4a4710 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) pid=280114 stat=onproc flags process=10 proc=4000000 pri=84, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff8000275d8d30,0xffffffff82bab0b8 process=0xffff8000ffffb1e8 user=0xffff80002e49f000, vmspace=0xfffffd8067f775d8 estcpu=34, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 14738 21321 35646 32767 2 0x10 syz-executor.3 14738 327784 35646 32767 2 0x4000010 syz-executor.3 14738 519120 35646 32767 3 0x4000090 fsleep syz-executor.3 54127 427678 37421 32767 2 0x10 syz-executor.4 54127 306830 37421 32767 3 0x4000090 fsleep syz-executor.4 20503 318896 39068 32767 3 0x90 nanoslp syz-executor.1 20503 144245 39068 32767 3 0x4000090 kqsel syz-executor.1 20503 139711 39068 32767 3 0x4000090 fsleep syz-executor.1 14187 299078 41778 32767 2 0x10 syz-executor.5 14187 165271 41778 32767 7 0x4000010 syz-executor.5 14187 459031 41778 32767 3 0x4000090 fsleep syz-executor.5 *14187 280114 41778 32767 7 0x4000010 syz-executor.5 96881 344688 20118 32767 2 0x82010 syz-executor.7 96881 364331 20118 32767 3 0x4002010 suspend syz-executor.7 96881 259839 20118 32767 2 0x4082010 syz-executor.7 39068 426866 75492 32767 3 0x90 nanoslp syz-executor.1 75492 518667 47715 0 3 0x82 wait syz-executor.1 61985 375719 79191 32767 3 0x90 nanoslp syz-executor.6 79191 96294 47715 0 3 0x82 wait syz-executor.6 41778 321678 22064 32767 3 0x90 nanoslp syz-executor.5 22064 69583 47715 0 3 0x82 wait syz-executor.5 65215 429792 28741 32767 3 0x90 nanoslp syz-executor.2 28741 452503 47715 0 3 0x82 wait syz-executor.2 37421 376225 75412 32767 3 0x90 nanoslp syz-executor.4 75412 508459 47715 0 3 0x82 wait syz-executor.4 39460 495647 78411 32767 3 0x10 biowait syz-executor.0 78411 72287 47715 0 3 0x82 wait syz-executor.0 20118 240868 29761 32767 3 0x90 nanoslp syz-executor.7 29761 172111 47715 0 3 0x82 wait syz-executor.7 35646 404954 54196 32767 3 0x90 nanoslp syz-executor.3 54196 400197 47715 0 3 0x82 wait syz-executor.3 34375 121337 0 0 3 0x14200 bored sosplice 47715 180923 89099 0 3 0x82 thrsleep syz-fuzzer 47715 240492 89099 0 3 0x4000082 nanoslp syz-fuzzer 47715 340168 89099 0 3 0x4000082 wait syz-fuzzer 47715 2238 89099 0 3 0x4000082 wait syz-fuzzer 47715 79797 89099 0 3 0x4000082 thrsleep syz-fuzzer 47715 492550 89099 0 3 0x4000082 thrsleep syz-fuzzer 47715 380019 89099 0 3 0x4000082 wait syz-fuzzer 47715 484732 89099 0 3 0x4000082 wait syz-fuzzer 47715 435791 89099 0 3 0x4000082 thrsleep syz-fuzzer 47715 419875 89099 0 3 0x4000082 wait syz-fuzzer 47715 124029 89099 0 3 0x4000082 kqread syz-fuzzer 47715 514603 89099 0 3 0x4000082 wait syz-fuzzer 47715 148171 89099 0 3 0x4000082 thrsleep syz-fuzzer 47715 308459 89099 0 3 0x4000082 thrsleep syz-fuzzer 47715 424817 89099 0 3 0x4000082 wait syz-fuzzer 47715 96221 89099 0 3 0x4000082 wait syz-fuzzer 89099 310483 85540 0 3 0x10008a sigsusp ksh 85540 343996 95694 0 3 0x9a kqread sshd 69741 267050 1 0 3 0x100083 ttyin getty 95694 187065 1 0 3 0x88 kqread sshd 80724 32663 4965 73 3 0x1100090 kqread syslogd 4965 465651 1 0 3 0x100082 netio syslogd 70953 67337 1 0 3 0x100080 kqread resolvd 41405 356614 38861 77 3 0x100092 kqread dhcpleased 6957 414307 38861 77 3 0x100092 kqread dhcpleased 38861 316965 1 0 3 0x80 kqread dhcpleased 57349 115373 0 0 3 0x14200 bored smr 75445 347569 0 0 2 0x14200 zerothread 59063 443898 0 0 3 0x14200 aiodoned aiodoned 50074 439831 0 0 3 0x14200 syncer update 51059 246374 0 0 3 0x14200 cleaner cleaner 53671 248190 0 0 3 0x14200 reaper reaper 23388 342488 0 0 3 0x14200 pgdaemon pagedaemon 99210 133368 0 0 3 0x14200 bored viomb 70435 159545 0 0 3 0x40014200 acpi0 acpi0 48173 518009 0 0 3 0x40014200 idle1 55508 134825 0 0 3 0x14200 bored softnet 93429 233619 0 0 3 0x14200 bored softnet 3671 149775 0 0 3 0x14200 bored softnet 95444 66613 0 0 3 0x14200 bored softnet 63686 196360 0 0 3 0x14200 bored systqmp 62194 492557 0 0 3 0x14200 bored systq 8725 424420 0 0 3 0x40014200 bored softclock 48195 331257 0 0 3 0x40014200 idle0 1 131287 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive sched_lock &sched_lock r = 1 (0xffffffff82b70d50) #0 witness_lock+0x44d #1 sleep_setup+0xc4 sys/kern/kern_synch.c:362 #2 rwsleep+0xc0 sys/kern/kern_synch.c:309 #3 futex_wait+0x13c sys/kern/sys_futex.c:259 #4 sys_futex+0xf8 sys/kern/sys_futex.c:110 #5 syscall+0x4c2 mi_syscall sys/sys/syscall_mi.h:101 [inline] #5 syscall+0x4c2 sys/arch/amd64/amd64/trap.c:585 #6 Xsyscall+0x128 Process 14738 (syz-executor.3) thread 0xffff8000290282a0 (327784) exclusive rrwlock inode r = 0 (0xfffffd8078f95e68) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vn_write+0x123 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x19c sys/kern/sys_generic.c:375 #7 sys_writev+0xa7 sys/kern/sys_generic.c:322 #8 syscall+0x4c2 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x4c2 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 14187 (syz-executor.5) thread 0xffff800029029a40 (165271) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82b67fe0) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3bb sys/kern/sched_bsd.c:415 #3 sleep_finish+0x180 sys/kern/kern_synch.c:417 #4 tsleep+0x12c sys/kern/kern_synch.c:155 #5 biowait+0x91 sys/kern/vfs_bio.c:1268 #6 bwrite+0x21b sys/kern/vfs_bio.c:769 #7 VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640 #8 ufs_direnter+0x8fa sys/ufs/ufs/ufs_lookup.c:909 #9 ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1856 #10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1370 #11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:426 #12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1802 #13 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #13 syscall+0x438 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8078f95918) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x1fc sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324 #8 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #9 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1818 #10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1370 #11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:426 #12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1802 #13 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #13 syscall+0x438 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 Process 39460 (syz-executor.0) thread 0xffff8000275d97b0 (495647) exclusive rrwlock inode r = 0 (0xfffffd8078f95808) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #10 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #10 syscall+0x438 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8062a222c0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x438 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 6413K 6420K 78643K 11440 0 pcb 13 12K 14K 78643K 17 0 rtable 246 7K 7K 78643K 3959 0 ifaddr 82 17K 17K 78643K 382 0 sysctl 3 1K 3K 78643K 14 0 counters 56 35K 35K 78643K 140 0 ioctlops 0 0K 2K 78643K 432 0 iov 1 0K 32K 78643K 10146 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1271 79K 79K 78643K 21732 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 675 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 11680 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 117K 78643K 43763 0 sigio 0 0K 0K 78643K 2788 0 proc 59 91K 115K 78643K 4713 0 subproc 104 6K 6K 78643K 650 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 4942 0 in_multi 99 6K 7K 78643K 954 0 ether_multi 1 0K 0K 78643K 116 0 mrt 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 241 1076K 1076K 78643K 241 0 exec 0 0K 1K 78643K 6649 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 466 96K 992K 78643K 321865 0 UVM aobj 131 8K 8K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1124 0 NDP 11 0K 2K 78643K 153 0 temp 124 4734K 4862K 78643K 109498 0 kqueue 13 20K 26K 78643K 3432 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 3716 0 3713 48 47 1 3 0 8 0 rtentry 112 624 0 508 4 0 4 4 0 8 0 unpcb 144 35230 0 35214 347 343 4 10 0 8 3 syncache 296 365 0 365 73 73 0 1 0 8 0 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 249 0 249 38 38 0 1 0 8 0 tcpcb 768 17435 0 17431 633 632 1 16 0 8 0 arp 120 116 0 97 1 0 1 1 0 8 0 ipq 40 55 0 53 27 26 1 1 0 8 0 ipqe 40 451 0 448 27 26 1 1 0 8 0 inpcb 368 35440 0 35432 667 663 4 19 0 8 3 nd6 48 187 0 158 1 0 1 1 0 8 0 kcovpl 48 50 0 42 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2458 0 1989 36 6 30 32 0 8 0 art_table 32 2459 0 1989 9 5 4 5 0 8 0 art_node 16 623 0 517 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 3 1 0 1 1 0 8 0 semapl 112 11678 0 11668 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 80483 0 78950 96 0 96 96 0 8 0 ffsino 272 80483 0 78950 103 0 103 103 0 8 0 nchpl 144 141354 0 139710 63 0 63 63 0 8 0 uvmvnodes 80 6586 0 0 135 0 135 135 0 8 0 vnodes 216 6586 0 0 366 0 366 366 0 8 0 namei 1024 516001 0 515999 11 10 1 2 0 8 0 percpumem 16 82 0 42 1 0 1 1 0 8 0 kstatmem 264 106 0 84 2 0 2 2 0 8 0 scxspl 216 401754 0 401753 123 119 4 8 0 8 3 plimitpl 152 9192 0 9168 89 87 2 2 0 8 1 sigapl 424 43970 0 43916 7 0 7 7 0 8 0 futexpl 64 423830 0 423826 17 16 1 1 0 8 0 knotepl 120 2499 0 0 24 12 12 15 0 8 0 kqueuepl 216 12477 0 12467 213 210 3 8 0 8 2 pipepl 320 12224 0 12196 335 324 11 13 0 8 8 fdescpl 496 43952 0 43918 7 2 5 6 0 8 0 filepl 152 370682 0 370441 618 600 18 20 0 8 8 lockfpl 104 6043 0 6041 5 4 1 2 0 8 0 lockfspl 48 1559 0 1557 1 0 1 1 0 8 0 sessionpl 144 65 0 49 1 0 1 1 0 8 0 pgrppl 48 661 0 645 1 0 1 1 0 8 0 ucredpl 104 109110 0 109092 1 0 1 1 0 8 0 zombiepl 144 43918 0 43916 2 1 1 1 0 8 0 processpl 1064 43970 0 43916 4 0 4 4 0 8 0 procpl 672 136436 0 136357 111 103 8 9 0 8 1 sosppl 168 672 0 672 86 85 1 1 0 8 1 sockpl 488 75800 0 75765 1583 1570 13 35 0 8 7 mcl64k 65536 81 0 0 5 2 3 3 0 8 0 mcl16k 16384 89 0 0 7 4 3 3 0 8 0 mcl12k 12288 49 0 0 2 0 2 2 0 8 0 mcl9k 9216 85 0 0 3 1 2 2 0 8 0 mcl8k 8192 82 0 0 5 2 3 3 0 8 0 mcl4k 4096 82 0 0 4 0 4 4 0 8 0 mcl2k2 2112 21 0 0 2 0 2 2 0 8 0 mcl2k 2048 932 0 0 32 12 20 31 0 8 2 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 4356 0 0 132 22 110 111 0 8 0 bufpl 288 77990 0 71402 471 0 471 471 0 8 0 anonpl 24 9195729 0 9181585 385 269 116 134 0 186 2 amapchunkpl 152 1984394 0 1983659 18092 17967 125 4422 0 158 94 amappl16 200 101609 0 101251 644 622 22 40 0 8 0 amappl15 192 6 0 6 3 3 0 1 0 8 0 amappl14 184 314 0 299 1 0 1 1 0 8 0 amappl13 176 61 0 61 16 16 0 1 0 8 0 amappl12 168 929 0 923 1 0 1 1 0 8 0 amappl11 160 54 0 42 1 0 1 1 0 8 0 amappl10 152 78 0 67 1 0 1 1 0 8 0 amappl9 144 1462 0 1461 1 0 1 1 0 8 0 amappl8 136 2259 0 1976 11 1 10 10 0 8 0 amappl7 128 447 0 430 1 0 1 1 0 8 0 amappl6 120 1241 0 1217 2 1 1 2 0 8 0 amappl5 112 807 0 799 1 0 1 1 0 8 0 amappl4 104 2306 0 2269 3 1 2 2 0 8 0 amappl3 96 138842 0 138781 2 0 2 2 0 8 0 amappl2 88 47695 0 47609 5 3 2 3 0 8 0 amappl1 80 1005700 0 1004930 72 54 18 21 0 8 0 amappl 88 312924 0 312706 6 0 6 6 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 43953 0 43919 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 43953 0 43919 1 0 1 1 0 8 0 vmmpekpl 168 375040 0 374967 4 0 4 4 0 8 0 vmmpepl 168 4128509 0 4125504 581 435 146 154 0 357 0 vmsppl 368 43952 0 43919 4 0 4 4 0 8 0 rwobjpl 56 1102203 0 1093744 171 47 124 125 0 8 0 pdppl 4096 87913 0 87838 1309 1228 81 91 0 8 6 pvpl 32 17346195 0 17325451 1254 1024 230 270 0 265 33 pmappl 248 43952 0 43919 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2889 0 1951 28 0 28 28 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff829d6ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b67dd8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b67dd8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000275ad6c0,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f Xspllower() at Xspllower+0x19 cnputc(6d) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(6d) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064 db_printf(ffffffff8265b9b6) at db_printf+0x85 sys/kern/subr_prf.c:498 fault(ffffffff8260ac50) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff8000275adb60,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff8000275adb60) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 end trace frame: 0xffff8000275adbe0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff829d6ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b67dd8) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b67dd8) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff8000275ad6c0,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f Xspllower() at Xspllower+0x19 cnputc(6d) at cnputc+0x4b sys/dev/cons.c:218 db_putchar(6d) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1064 db_printf(ffffffff8265b9b6) at db_printf+0x85 sys/kern/subr_prf.c:498 fault(ffffffff8260ac50) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff8000275adb60,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff8000275adb60) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff8000275adc60) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 VOP_WRITE(fffffd805ca7d998,ffff8000275adcf8,8,fffffd807f7d7340) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd805ca7d998,ffff80002126d800,b0,0,1,e0ebba8373553bdb,ffff8000275ade20,fffffd805ca7d998,78) at vn_rdwr+0xe9 sys/kern/vfs_vnops.c:324 ufs_symlink(ffff8000275ade20) at ufs_symlink+0x142 sys/ufs/ufs/ufs_vnops.c:1386 VOP_SYMLINK(fffffd8070a745f0,ffff8000275adfa0,ffff8000275adfd0,ffff8000275aded0,ffff80002126d800) at VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:426 dosymlinkat(ffff800029029a40,20000000,ffffff9c,20000140) at dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1802 syscall(ffff8000275ae150) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000275ae150) at syscall+0x438 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf3f8ff263d0, count: -23 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a8c2b) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261dea1,ffffffff825e7f98,2a1,ffffffff825d9635) at __assert+0x25 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: 11 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a8c2b) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261dea1,ffffffff825e7f98,2a1,ffffffff825d9635) at __assert+0x25 sys/kern/subr_prf.c:157 proc_trampoline_mp() at proc_trampoline_mp+0x131 end trace frame: 0x0, count: -4 ddb{1}>