*cpu1: uvm_fault(0xfffffa806cb2e020, 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: 0x7af665d28c10, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002eb86bd0 rbx 0 rdx 0 rcx 0xffff80002a2207e0 rax 0x2a r8 0xffff80002eb86b00 r9 0 r10 0x9e699c45658fb60e r11 0xfdcbfdfcc2619a66 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff815e34c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002eb86b50 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=481958 pid=87140 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2202b0,0xffffffff83a55258 process=0xffff800045fe7510 user=0xffff80002eb81000, vmspace=0xfffffa806cb2eb90 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *87140 481958 59879 0 7 0 0 syz-executor 23546 160188 31622 0 2 0x2 0 ndp 31622 523490 98307 0 3 0x100002 0x88 sigsusp sh 64799 75151 36554 0 2 0 0 syz-executor 64799 280836 36554 0 7 0 0x4000000 syz-executor 75927 39035 77195 0 2 0x100000 0 sh 77195 487546 76113 0 2 0x100002 0 sh 91882 277006 58713 0 2 0x2 0 sh 9382 364616 62274 0 2 0 0 syz-executor 9382 211630 62274 0 3 0 0x4000080 fsleep syz-executor 78315 361776 26167 0 2 0x100002 0 sh 76113 418135 13201 0 3 0x2 0x80 wait syz-executor 58713 285887 13201 0 3 0x2 0x80 wait syz-executor 24557 410247 13201 0 3 0x2 0x80 nanoslp syz-executor 59879 103342 13201 0 3 0x2 0x80 nanoslp syz-executor 62274 277547 13201 0 3 0x2 0x80 nanoslp syz-executor 98307 118959 13201 0 3 0x2 0x80 wait syz-executor 36554 287724 13201 0 3 0x2 0x80 nanoslp syz-executor 26167 226396 13201 0 3 0x2 0x80 wait syz-executor 13201 517528 96192 0 3 0x2 0x80 kqread syz-executor 96192 475696 49095 0 3 0x100002 0x88 sigsusp ksh 49095 360966 96101 0 3 0x10 0x88 kqread sshd-session 96101 296013 99898 0 3 0x12 0x80 kqread sshd-session 11967 187604 1 0 3 0x100003 0x80 ttyin getty 99898 10166 1 0 3 0 0x88 kqread sshd 43209 333820 94979 74 3 0x1100012 0x80 bpf pflogd 94979 272853 1 0 3 0 0x80 sbwait pflogd 85048 285112 50006 73 3 0x1100010 0x80 kqread syslogd 50006 438418 1 0 3 0x100002 0x80 sbwait syslogd 40908 81973 1 0 3 0x100000 0x80 kqread resolvd 65104 292977 20386 77 3 0x100012 0x80 kqread dhcpleased 81360 405580 20386 77 3 0x100012 0x80 kqread dhcpleased 20386 482436 1 0 3 0 0x80 kqread dhcpleased 36249 363677 0 0 3 0x14000 0x200 bored smr 30217 304127 0 0 2 0x14000 0x200 zerothread 12863 284451 0 0 3 0x14000 0x200 aiodoned aiodoned 68959 261392 0 0 3 0x14000 0x200 syncer update 24659 208172 0 0 3 0x14000 0x200 cleaner cleaner 83259 223335 0 0 3 0x14000 0x200 reaper reaper 15867 484624 0 0 3 0x14000 0x200 pgdaemon pagedaemon 73201 442490 0 0 3 0x14000 0x200 bored viomb 32993 122214 0 0 3 0x14000 0x40000200 acpi0 acpi0 8597 305090 0 0 3 0x14000 0x40000200 idle1 34996 56758 0 0 3 0x14000 0x200 bored softnet1 580 474560 0 0 3 0x14000 0x200 bored softnet0 36785 155549 0 0 3 0x14000 0x200 smrbar systqmp 45761 410037 0 0 3 0x14000 0x200 bored systq 27452 488391 0 0 3 0x14000 0x200 tmoslp softclockmp 97 498045 0 0 3 0x14000 0x40000200 tmoslp softclock 38770 192566 0 0 3 0x14000 0x40000200 idle0 1 213312 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffa806cb29410) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_extract+0x68 pmap_find_pte_direct sys/arch/amd64/amd64/pmap.c:476 [inline] #2 pmap_extract+0x68 sys/arch/amd64/amd64/pmap.c:1584 #3 uvm_fault_upper_lookup+0x20b sys/uvm/uvm_fault.c:975 #4 uvm_fault+0x159 sys/uvm/uvm_fault.c:632 #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 87140 (syz-executor) thread 0xffff80002a2207e0 (481958) shared rwlock amaplk r = 0 (0xfffffa806de0fd78) #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 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 (0xfffffa806cb2ec90) #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 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffa806cb29410) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_extract+0x68 pmap_find_pte_direct sys/arch/amd64/amd64/pmap.c:476 [inline] #2 pmap_extract+0x68 sys/arch/amd64/amd64/pmap.c:1584 #3 uvm_fault_upper_lookup+0x20b sys/uvm/uvm_fault.c:975 #4 uvm_fault+0x159 sys/uvm/uvm_fault.c:632 #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 64799 (syz-executor) thread 0xffff80002a221a08 (280836) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83b2de00) #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 36785 (systqmp) thread 0xffff800045ffe000 (155549) shared rwlock systqmp r = 0 (0xffffffff83938118) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11055 12087K 12092K 166960K 12148 0 pcb 17 12K 12K 166960K 20 0 rtable 197 5K 5K 166960K 287 0 pf 36 17K 18K 166960K 47 0 ifaddr 39 6K 6K 166960K 41 0 ifgroup 59 2K 2K 166960K 59 0 sysctl 1 1K 9K 166960K 6 0 counters 72 37K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 1483 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1324 83K 83K 166960K 1397 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 20 73K 85K 166960K 128 0 sigio 0 0K 0K 166960K 1 0 proc 69 115K 163K 166960K 530 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 78 5K 5K 166960K 78 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 31 148K 148K 166960K 31 0 exec 0 0K 1K 166960K 369 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 218 169K 176K 166960K 2999 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 46 92K 102K 166960K 1253 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 25 1K 1K 166960K 25 0 temp 34 9114K 9120K 166960K 3791 0 kqueue 13 20K 22K 166960K 26 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 27 0 24 1 0 1 1 0 8 0 rtentry 176 91 0 1 5 0 5 5 0 8 0 unpcb 144 41 0 24 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 12 0 8 1 0 1 1 0 8 0 arp 136 15 0 0 1 0 1 1 0 8 0 inpcb 328 74 0 67 2 0 2 2 0 8 1 nd6 152 17 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 16 0 0 1 0 1 1 0 8 0 pfstkey 128 16 0 0 1 0 1 1 0 8 0 pfstate 448 16 0 0 2 0 2 2 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 256 368 0 0 23 0 23 23 0 8 0 art_table 40 369 0 0 4 0 4 4 0 8 0 art_node 32 91 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1568 0 102 92 0 92 92 0 8 0 ffsino 296 1568 0 102 113 0 113 113 0 8 0 nchpl 144 1770 0 74 63 0 63 63 0 8 0 vnodes 216 1691 0 0 94 0 94 94 0 8 0 namei 1024 5378 0 5378 2 0 2 2 0 8 2 percpumem 16 52 0 0 1 0 1 1 0 8 0 kstatmem 264 29 0 0 2 0 2 2 0 8 0 scxspl 216 6152 0 6152 4 1 3 3 1 8 3 plimitpl 152 30 0 13 1 0 1 1 0 8 0 sigapl 424 445 0 395 6 0 6 6 0 8 0 knotepl 120 51 0 0 2 0 2 2 0 8 0 kqueuepl 224 22 0 13 1 0 1 1 0 8 0 pipepl 344 126 0 99 3 0 3 3 0 8 0 fdescpl 528 429 0 395 3 0 3 3 0 8 0 filepl 160 1599 0 1386 11 0 11 11 0 8 1 lockfpl 104 8 0 5 1 0 1 1 0 8 0 lockfspl 48 5 0 2 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 91 0 78 1 0 1 1 0 8 0 zombiepl 144 396 0 395 1 0 1 1 0 8 0 processpl 1232 445 0 395 5 0 5 5 0 8 0 procpl 664 461 0 409 5 0 5 5 0 8 0 sockpl 752 142 0 115 4 0 4 4 0 8 1 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k 2048 14 0 0 2 0 2 2 0 8 0 mextrefs 64 12 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 118 0 0 8 0 8 8 0 8 0 bufpl 272 2275 0 105 145 0 145 145 0 8 0 anonpl 32 3779 0 0 31 0 31 31 0 247 0 amapchunkpl 152 8118 0 7703 17 0 17 17 0 158 0 amappl16 200 1756 0 1745 5 0 5 5 0 8 4 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 415 0 410 1 0 1 1 0 8 0 amappl13 176 118 0 105 1 0 1 1 0 8 0 amappl12 168 671 0 640 2 0 2 2 0 8 0 amappl11 160 40 0 40 1 0 1 1 0 8 1 amappl10 152 65 0 51 1 0 1 1 0 8 0 amappl9 144 274 0 274 1 0 1 1 0 8 1 amappl8 136 92 0 91 1 0 1 1 0 8 0 amappl7 128 144 0 130 1 0 1 1 0 8 0 amappl6 120 144 0 139 1 0 1 1 0 8 0 amappl5 112 110 0 100 1 0 1 1 0 8 0 amappl4 104 286 0 267 1 0 1 1 0 8 0 amappl3 96 1400 0 1311 3 0 3 3 0 8 0 amappl2 88 557 0 481 2 0 2 2 0 8 0 amappl1 80 10297 0 9657 15 0 15 15 0 8 1 amappl 88 2308 0 2169 4 0 4 4 0 92 0 uvmvnodes 80 98 0 0 2 0 2 2 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 24 429 0 395 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 429 0 395 1 0 1 1 0 8 0 vmmpekpl 168 5570 0 5538 2 0 2 2 0 8 0 vmmpepl 168 37138 0 35256 83 0 83 83 0 357 1 vmsppl 488 428 0 395 5 0 5 5 0 8 0 rwobjpl 80 14222 0 13172 24 0 24 24 0 8 1 pdppl 4096 865 0 790 93 12 81 81 0 8 6 pvpl 32 8886 0 0 73 1 72 73 0 265 0 pmappl 256 428 0 395 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 397 0 15 11 0 11 11 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: 0x7af665d28c10, 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_write_1(3f8,0,2d) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:790 comcnputc(800,2d) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,2d) at comcnputc+0x1ab sys/dev/ic/com.c:1268 cnputc(2d) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83460ee8) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff8351c309) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff8000397b6930,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff8000397b6930) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80002a221a08,fffffa806cb2ca30,ffff8000397b6b10) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 end trace frame: 0xffff8000397b6b80, 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_write_1(3f8,0,2d) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:790 comcnputc(800,2d) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,2d) at comcnputc+0x1ab sys/dev/ic/com.c:1268 cnputc(2d) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83460ee8) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff8351c309) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff8000397b6930,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff8000397b6930) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80002a221a08,fffffa806cb2ca30,ffff8000397b6b10) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimes(ffff80002a221a08,ffff8000397b6c60,ffff8000397b6bb0) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2733 syscall(ffff8000397b6c60) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000397b6c60) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x503b451a70, count: -17