uvm_fault(0xfffffd806fba3990, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81e62248 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80003b7b6e10 gsbase 0xffff80002999dff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81e62248 Starting stack trace... panic(ffffffff834f058c) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003b7b6d60) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff800045feed10,fffffd80656ef6d8,ffff80003b7b6f40) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimes(ffff800045feed10,ffff80003b7b7090,ffff80003b7b6fe0) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2733 syscall(ffff80003b7b7090) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b7b7090) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc9fea04e40, count: 250 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *357579 36256 0 0 0 1 syz-executor 172860 17112 0 0 0 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7498b283b350, 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 *cpu1: uvm_fault(0xfffffd806fba3990, 0x98, 0, 1) -> e ddb{1}> show kasan No such command ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7498b283b350, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800039bb1360 rbx 0 rdx 0 rcx 0xffff800045feefa8 rax 0x2a r8 0xffff800039bb1290 r9 0x1 r10 0xdcc497bae09c086f r11 0x5a93a8f8f6a92e22 r12 0 r13 0xffffffff82e3a2d8 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff8105a4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff800039bb12e0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=357579 pid=36256 tcnt=2 stat=onproc flags process=0 proc=0 runpri=75, usrpri=75, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045fee7e0,0xffff800045fefa18 process=0xffff80002a37eb68 user=0xffff800039bac000, vmspace=0xfffffd8074204d70 estcpu=25, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 8855 420381 42305 0 2 0 0 syz-executor 8855 49445 42305 0 2 0 0x4000000 syz-executor 2726 278867 89148 0 3 0x1000 0x2000 suspend syz-executor 2726 118091 89148 0 2 0x1000 0x4080000 syz-executor *36256 357579 19018 0 7 0 0 syz-executor 36256 504158 19018 0 3 0 0x4000080 fsleep syz-executor 1857 214284 15831 0 2 0 0 syz-executor 1857 523942 15831 0 3 0 0x4000080 fsleep syz-executor 17112 172860 85732 0 7 0 0 syz-executor 17112 215839 85732 0 3 0 0x4000000 sbar syz-executor 81943 60055 97221 0 2 0 0 syz-executor 81943 168740 97221 0 3 0 0x4000080 fsleep syz-executor 6310 31343 22437 0 3 0x2 0x80 wait syz-executor 85397 375977 22437 0 2 0x2 0 syz-executor 89148 301835 22437 0 3 0x2 0x80 nanoslp syz-executor 42305 341004 22437 0 3 0x2 0x80 nanoslp syz-executor 19018 395821 22437 0 3 0x2 0x80 nanoslp syz-executor 97221 69072 22437 0 3 0x2 0x80 nanoslp syz-executor 85732 479114 22437 0 3 0x2 0x80 nanoslp syz-executor 15831 349807 22437 0 3 0x2 0x80 nanoslp syz-executor 22437 121675 2970 0 3 0x2 0x80 kqread syz-executor 2970 370041 79007 0 3 0x100002 0x88 sigsusp ksh 79007 433007 2942 0 3 0x10 0x88 kqread sshd-session 2942 381503 51409 0 3 0x12 0x80 kqread sshd-session 15893 393356 1 0 3 0x100003 0x80 ttyopn getty 51409 353181 1 0 3 0 0x88 kqread sshd 1264 168080 94632 74 3 0x1100012 0x80 bpf pflogd 94632 496638 1 0 3 0 0x80 sbwait pflogd 61607 89363 95177 73 3 0x1100010 0x80 kqread syslogd 95177 110440 1 0 3 0x100002 0x80 sbwait syslogd 32845 84427 1 0 3 0x100000 0x80 kqread resolvd 36397 308855 92839 77 3 0x100012 0x80 kqread dhcpleased 62711 210438 92839 77 3 0x100012 0x80 kqread dhcpleased 92839 154126 1 0 3 0 0x80 kqread dhcpleased 51649 338339 0 0 3 0x14000 0x200 bored smr 26914 7590 0 0 2 0x14000 0x200 zerothread 68629 504562 0 0 3 0x14000 0x200 aiodoned aiodoned 5660 150713 0 0 3 0x14000 0x200 syncer update 27281 274528 0 0 3 0x14000 0x200 cleaner cleaner 38402 309289 0 0 3 0x14000 0x200 reaper reaper 43530 265143 0 0 3 0x14000 0x200 pgdaemon pagedaemon 54893 9549 0 0 3 0x14000 0x200 bored viomb 52149 452407 0 0 3 0x14000 0x40000200 acpi0 acpi0 935 281334 0 0 3 0x14000 0x40000200 idle1 82405 180261 0 0 3 0x14000 0x200 bored softnet1 64829 334249 0 0 3 0x14000 0x200 netlock softnet0 14205 477778 0 0 2 0x14000 0x40000200 systqmp 29950 474321 0 0 3 0x14000 0x200 bored systq 26112 490051 0 0 3 0x14000 0x200 tmoslp softclockmp 70692 291461 0 0 3 0x14000 0x40000200 tmoslp softclock 72274 268445 0 0 3 0x14000 0x40000200 idle0 1 56010 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 17112 (syz-executor) thread 0xffff800045feed10 (215839) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a81b00) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 Process 85397 (syz-executor) thread 0xffff800045fef4d8 (375977) exclusive rrwlock inode r = 0 (0xfffffd806cc03b30) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d4ebe98) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11086 12170K 12338K 166960K 12373 0 pcb 21 13K 14K 166960K 84 0 rtable 237 7K 7K 166960K 389 0 pf 36 18K 25K 166960K 110 0 ifaddr 42 7K 7K 166960K 47 0 ifgroup 55 2K 2K 166960K 57 0 sysctl 3 1K 9K 166960K 9 0 counters 70 37K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 1510 0 iov 0 0K 16K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1354 85K 85K 166960K 1588 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 10 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 17 61K 93K 166960K 342 0 sigio 0 0K 0K 166960K 1 0 proc 72 115K 180K 166960K 580 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 23 0 in_multi 97 6K 6K 166960K 114 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 187 837K 837K 166960K 187 0 exec 0 0K 1K 166960K 408 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 225 159K 173K 166960K 4961 0 UVM aobj 15 2K 2K 166960K 15 0 pinsyscall 42 84K 104K 166960K 1528 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 8 0 NDP 12 0K 2K 166960K 30 0 temp 38 9114K 9130K 166960K 15772 0 kqueue 13 20K 26K 166960K 62 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 44 0 41 1 0 1 1 0 8 0 rtentry 176 119 0 12 6 0 6 6 0 8 0 unpcb 144 208 0 191 2 0 2 2 0 8 1 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 34 0 30 1 0 1 1 0 8 0 arp 136 19 0 1 1 0 1 1 0 8 0 inpcb 328 249 0 236 4 0 4 4 0 8 2 nd6 152 25 0 3 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pfstscr 40 4 0 2 1 0 1 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 5 0 2 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfanchor 1288 8 0 4 1 0 1 1 0 8 0 pfstitem 24 39 0 0 1 0 1 1 0 8 0 pfstkey 128 41 0 2 2 0 2 2 0 8 0 pfstate 448 38 0 1 5 0 5 5 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 484 0 42 31 0 31 31 0 8 1 art_table 40 485 0 42 5 0 5 5 0 8 0 art_node 32 119 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 72 8 0 3 1 0 1 1 0 8 0 shmpl 112 12 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1925 0 460 93 0 93 93 0 8 0 ffsino 296 1925 0 460 114 0 114 114 0 8 0 nchpl 144 2414 0 717 64 0 64 64 0 8 0 vnodes 216 2167 0 0 121 0 121 121 0 8 0 namei 1024 7798 0 7797 3 2 1 2 0 8 0 percpumem 16 52 0 1 1 0 1 1 0 8 0 kstatmem 264 29 0 2 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 10381 0 10381 11 3 8 8 1 8 8 plimitpl 152 145 0 127 1 0 1 1 0 8 0 sigapl 424 668 0 621 7 0 7 7 0 8 1 knotepl 120 310 0 0 10 0 10 10 0 8 0 kqueuepl 224 83 0 74 2 0 2 2 0 8 1 pipepl 344 140 0 113 3 0 3 3 0 8 0 fdescpl 528 652 0 621 3 0 3 3 0 8 0 filepl 160 3065 0 2846 13 0 13 13 0 8 2 lockfpl 104 92 0 89 1 0 1 1 0 8 0 lockfspl 48 40 0 37 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 42 0 25 1 0 1 1 0 8 0 ucredpl 104 464 0 451 1 0 1 1 0 8 0 zombiepl 144 623 0 621 2 1 1 1 0 8 0 processpl 1232 668 0 621 5 0 5 5 0 8 1 procpl 664 1022 0 969 6 0 6 6 0 8 1 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 752 510 0 477 7 0 7 7 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 109 0 0 14 0 14 14 0 8 0 mcl2k 2048 15 0 0 2 0 2 2 0 8 0 mextrefs 64 13 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 140 0 0 9 0 9 9 0 8 0 bufpl 272 3837 0 105 249 0 249 249 0 8 0 anonpl 32 7528 0 0 61 0 61 61 0 247 0 amapchunkpl 152 14852 0 14381 28 0 28 28 0 158 7 amappl16 200 1935 0 1908 18 4 14 14 0 8 6 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 443 0 441 1 0 1 1 0 8 0 amappl13 176 131 0 119 1 0 1 1 0 8 0 amappl12 168 906 0 876 2 0 2 2 0 8 0 amappl11 160 21 0 21 2 2 0 1 0 8 0 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 280 0 280 1 1 0 1 0 8 0 amappl8 136 100 0 98 1 0 1 1 0 8 0 amappl7 128 166 0 153 1 0 1 1 0 8 0 amappl6 120 162 0 160 1 0 1 1 0 8 0 amappl5 112 99 0 88 1 0 1 1 0 8 0 amappl4 104 301 0 281 1 0 1 1 0 8 0 amappl3 96 2691 0 2597 4 1 3 3 0 8 0 amappl2 88 795 0 720 2 0 2 2 0 8 0 amappl1 80 11475 0 10867 14 0 14 14 0 8 1 amappl 88 4176 0 4021 5 0 5 5 0 92 0 uvmvnodes 80 106 0 0 3 0 3 3 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 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 14 0 0 1 0 1 1 0 8 0 uaddrrnd 24 652 0 621 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 652 0 621 1 0 1 1 0 8 0 vmmpekpl 168 7208 0 7171 2 0 2 2 0 8 0 vmmpepl 168 49889 0 47983 99 3 96 96 0 357 4 vmsppl 488 651 0 621 5 0 5 5 0 8 1 rwobjpl 80 17105 0 16065 27 0 27 27 0 8 0 pdppl 4096 1311 0 1242 103 32 71 85 0 8 2 pvpl 32 13812 0 0 113 1 112 112 0 265 0 pmappl 256 651 0 621 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 527 0 39 14 0 14 14 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff839d6ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff83a81300) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a81300) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 scsi_xs_put(fffffd806cc6f618) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd806cc6f618) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd806cc6f618) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd806cc6f618) at scsi_done+0x40 sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a7268) at vioscsi_vq_done+0xe1 sys/dev/pv/vioscsi.c:-1 intr_handler(ffff8000397ab6b0,ffff8000002a2900) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:564 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7b7f3e60d720, count: 5 ddb{0}> trace x86_ipi_db(ffffffff839d6ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff83a81300) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a81300) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 scsi_xs_put(fffffd806cc6f618) at scsi_xs_put+0x51 scsi_iopool_put sys/scsi/scsi_base.c:270 [inline] scsi_xs_put(fffffd806cc6f618) at scsi_xs_put+0x51 scsi_io_put sys/scsi/scsi_base.c:499 [inline] scsi_xs_put(fffffd806cc6f618) at scsi_xs_put+0x51 sys/scsi/scsi_base.c:787 scsi_done(fffffd806cc6f618) at scsi_done+0x40 sys/scsi/scsi_base.c:1496 vioscsi_vq_done(ffff8000000a7268) at vioscsi_vq_done+0xe1 sys/dev/pv/vioscsi.c:-1 intr_handler(ffff8000397ab6b0,ffff8000002a2900) at intr_handler+0x125 sys/arch/amd64/amd64/intr.c:564 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7b7f3e60d720, count: -10 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7498b283b350, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7498b283b350, count: -1