*cpu1: uvm_fault(0xfffff4006cf52b88, 0x98, 0, 1) -> e ddb{0}> show kasan No such command ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7ed50ea5f960, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000397aa3d0 rbx 0 rdx 0 rcx 0xffff80003abb8028 rax 0x2a r8 0xffff8000397aa300 r9 0 r10 0x17e9b655354f4b15 r11 0x4141e2c20043aa8f r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82f754c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff8000397aa350 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=78077 pid=14067 tcnt=4 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003abb8d20,0xffff80003abb8568 process=0xffff800045feeb68 user=0xffff8000397a5000, vmspace=0xfffff4006cf52b88 estcpu=36, cpticks=1, pctcpu=0.0, user=1, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *14067 78077 20548 0 7 0 0 syz-executor 14067 164290 20548 0 7 0 0x4000000 syz-executor 14067 501453 20548 0 2 0 0x4000000 syz-executor 14067 488109 20548 0 2 0 0x4000080 syz-executor 80294 301360 63278 0 2 0x4000000 0 syz-executor 80294 339103 63278 0 3 0x4000000 0x4000080 fsleep syz-executor 5693 9054 2468 0 2 0 0 syz-executor 5693 166574 2468 0 2 0 0x4000000 syz-executor 5693 377713 2468 0 2 0 0x4000000 syz-executor 96406 1269 27418 0 2 0 0 syz-executor 96406 124380 27418 0 2 0 0x4000000 syz-executor 61536 308565 26719 0 2 0 0 syz-executor 61536 483928 26719 0 3 0 0x4000080 fsleep syz-executor 61536 367036 26719 0 3 0 0x4000080 fsleep syz-executor 14307 114467 88209 0 2 0 0 syz-executor 14307 269248 88209 0 3 0 0x4000080 fsleep syz-executor 87042 183428 18955 0 2 0 0 syz-executor 87042 477033 18955 0 3 0 0x4000080 msgwait syz-executor 87042 359149 18955 0 3 0 0x4000080 msgwait syz-executor 81123 271059 65895 0 3 0 0x80 nanoslp syz-executor 81123 275200 65895 0 3 0 0x4000080 kqsel syz-executor 81123 362615 65895 0 3 0 0x4000080 fsleep syz-executor 27418 11657 47662 0 3 0x2 0x80 nanoslp syz-executor 65895 479379 47662 0 3 0x2 0x80 nanoslp syz-executor 18955 96144 47662 0 3 0x2 0x80 nanoslp syz-executor 26719 489048 47662 0 3 0x2 0x80 nanoslp syz-executor 63278 193989 47662 0 3 0x2 0x80 nanoslp syz-executor 2468 162064 47662 0 3 0x2 0x80 nanoslp syz-executor 20548 187673 47662 0 3 0x2 0x80 nanoslp syz-executor 88209 500970 47662 0 3 0x2 0x80 nanoslp syz-executor 47662 264005 10283 0 3 0x2 0x80 kqread syz-executor 10283 121582 68676 0 3 0x100002 0x88 sigsusp ksh 68676 12054 10841 0 3 0x10 0x88 kqread sshd-session 10841 396135 62296 0 3 0x12 0x80 kqread sshd-session 18268 125300 1 0 3 0x100003 0x80 ttyin getty 62296 408329 1 0 3 0 0x88 kqread sshd 54857 458281 10896 74 3 0x1100012 0x80 bpf pflogd 10896 199884 1 0 3 0 0x80 sbwait pflogd 22331 90474 58485 73 3 0x1100010 0x80 kqread syslogd 58485 509091 1 0 3 0x100002 0x80 sbwait syslogd 718 450801 1 0 3 0x100000 0x80 kqread resolvd 99107 108597 80194 77 3 0x100012 0x80 kqread dhcpleased 49077 244919 80194 77 3 0x100012 0x80 kqread dhcpleased 80194 467784 1 0 3 0 0x80 kqread dhcpleased 31732 298609 0 0 3 0x14000 0x200 bored smr 27507 349890 0 0 2 0x14000 0x200 zerothread 5706 163505 0 0 3 0x14000 0x200 aiodoned aiodoned 44130 85996 0 0 3 0x14000 0x200 syncer update 58904 210115 0 0 3 0x14000 0x200 cleaner cleaner 2236 79691 0 0 3 0x14000 0x200 reaper reaper 12988 392162 0 0 3 0x14000 0x200 pgdaemon pagedaemon 35075 180368 0 0 3 0x14000 0x200 bored viomb 88223 317288 0 0 3 0x14000 0x40000200 acpi0 acpi0 29052 282207 0 0 3 0x14000 0x40000200 idle1 51438 189341 0 0 3 0x14000 0x200 bored softnet1 28863 48018 0 0 3 0x14000 0x200 bored softnet0 61255 445304 0 0 3 0x14000 0x200 bored systqmp 31463 393051 0 0 3 0x14000 0x200 bored systq 92726 480918 0 0 3 0x14000 0x200 tmoslp softclockmp 8656 110704 0 0 3 0x14000 0x40000200 tmoslp softclock 63971 447626 0 0 3 0x14000 0x40000200 idle0 1 67207 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 14067 (syz-executor) thread 0xffff80003abb8028 (78077) exclusive rwlock amaplk r = 0 (0xfffff4006cd29f38) #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 uvm_fault_check+0x8a9 sys/uvm/uvm_fault.c:834 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #5 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffff4006cf52c88) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #7 recall_trap+0x8 Process 14067 (syz-executor) thread 0xffff80003abb9780 (164290) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a4dc00) #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11063 12174K 12238K 166960K 12164 0 pcb 17 12K 12K 166960K 21 0 rtable 237 7K 7K 166960K 366 0 pf 34 17K 18K 166960K 45 0 ifaddr 42 7K 7K 166960K 45 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 1490 0 iov 0 0K 1K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1292 81K 81K 166960K 1369 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 18 65K 93K 166960K 154 0 sigio 0 0K 0K 166960K 1 0 proc 69 115K 180K 166960K 551 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 0 0K 0K 166960K 2 0 in_multi 98 6K 6K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 386 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 175K 187K 166960K 3146 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 104K 166960K 1310 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 2K 166960K 28 0 temp 37 9114K 9122K 166960K 5745 0 kqueue 17 24K 24K 166960K 31 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 101 0 97 3 0 3 3 0 8 2 rtentry 176 111 0 4 5 0 5 5 0 8 0 unpcb 144 44 0 27 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 12 0 7 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 78 0 70 2 0 2 2 0 8 1 nd6 152 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 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 pfstitem 24 23 0 0 1 0 1 1 0 8 0 pfstkey 128 23 0 0 1 0 1 1 0 8 0 pfstate 448 23 0 0 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 6 29 0 29 29 0 8 0 art_table 40 453 0 6 5 0 5 5 0 8 0 art_node 32 111 0 14 1 0 1 1 0 8 0 semapl 72 2 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1591 0 119 93 0 93 93 0 8 0 ffsino 296 1591 0 119 114 0 114 114 0 8 0 nchpl 144 1814 0 108 64 0 64 64 0 8 0 vnodes 216 1685 0 0 94 0 94 94 0 8 0 namei 1024 5649 0 5649 1 0 1 1 0 8 1 percpumem 16 51 0 0 1 0 1 1 0 8 0 kstatmem 264 27 0 0 2 0 2 2 0 8 0 scxspl 216 6293 0 6293 4 1 3 3 1 8 3 plimitpl 152 33 0 14 1 0 1 1 0 8 0 sigapl 424 471 0 423 7 0 7 7 0 8 1 knotepl 120 101 0 0 4 0 4 4 0 8 0 kqueuepl 224 29 0 15 1 0 1 1 0 8 0 pipepl 344 129 0 101 3 0 3 3 0 8 0 fdescpl 528 455 0 423 3 0 3 3 0 8 0 filepl 160 1883 0 1621 13 0 13 13 0 8 2 lockfpl 104 56 0 19 1 0 1 1 0 8 0 lockfspl 48 12 0 7 1 0 1 1 0 8 0 sessionpl 144 25 0 15 1 0 1 1 0 8 0 pgrppl 48 33 0 15 1 0 1 1 0 8 0 ucredpl 104 175 0 162 1 0 1 1 0 8 0 zombiepl 144 423 0 423 1 0 1 1 0 8 1 processpl 1232 471 0 423 5 0 5 5 0 8 1 procpl 664 516 0 454 6 0 6 6 0 8 0 sockpl 752 224 0 195 10 0 10 10 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mextrefs 64 27 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 223 0 0 14 0 14 14 0 8 0 bufpl 272 2338 0 105 149 0 149 149 0 8 0 anonpl 32 3669 0 0 30 0 30 30 0 247 0 amapchunkpl 152 8521 0 8017 21 1 20 20 0 158 0 amappl16 200 1461 0 1442 5 1 4 5 0 8 3 amappl15 192 110 0 110 1 1 0 1 0 8 0 amappl14 184 479 0 477 1 0 1 1 0 8 0 amappl13 176 121 0 108 1 0 1 1 0 8 0 amappl12 168 705 0 674 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 70 0 56 1 0 1 1 0 8 0 amappl9 144 277 0 277 1 1 0 1 0 8 0 amappl8 136 100 0 98 1 0 1 1 0 8 0 amappl7 128 147 0 134 1 0 1 1 0 8 0 amappl6 120 152 0 151 1 0 1 1 0 8 0 amappl5 112 98 0 88 1 0 1 1 0 8 0 amappl4 104 295 0 278 1 0 1 1 0 8 0 amappl3 96 1538 0 1438 3 0 3 3 0 8 0 amappl2 88 585 0 506 2 0 2 2 0 8 0 amappl1 80 10602 0 10004 16 1 15 15 0 8 1 amappl 88 2419 0 2251 4 0 4 4 0 92 0 uvmvnodes 80 99 0 0 3 0 3 3 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 455 0 423 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 455 0 423 1 0 1 1 0 8 0 vmmpekpl 168 5779 0 5744 2 0 2 2 0 8 0 vmmpepl 168 38506 0 36578 87 0 87 87 0 357 3 vmsppl 488 454 0 423 5 0 5 5 0 8 1 rwobjpl 80 14388 0 13376 24 0 24 24 0 8 1 pdppl 4096 917 0 846 97 22 75 85 0 8 4 pvpl 32 11117 0 0 90 0 90 90 0 265 0 pmappl 256 454 0 423 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 422 0 25 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7ed50ea5f960, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff80002999dff0) 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 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,3e) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1671 [inline] comcnputc(800,3e) at comcnputc+0x250 sys/dev/ic/com.c:1274 cnputc(3e) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(3e) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff834604ef) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83525983) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c3f21e0,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c3f21e0) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003abb9780,fffff4006cc6c520,ffff80003c3f23a0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 end trace frame: 0xffff80003c3f2410, count: 0 ddb{1}> trace x86_ipi_db(ffff80002999dff0) 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 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,3e) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1671 [inline] comcnputc(800,3e) at comcnputc+0x250 sys/dev/ic/com.c:1274 cnputc(3e) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(3e) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff834604ef) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83525983) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c3f21e0,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c3f21e0) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003abb9780,fffff4006cc6c520,ffff80003c3f23a0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff80003abb9780,ffff80003c3f24f0,ffff80003c3f2440) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80003c3f24f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3f24f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12fab6c1d50, count: -17