*cpu0: uvm_fault(0xfffffd806ce2f3f0, 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: 0x7258e8967260, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c3f5720 rbx 0 rdx 0 rcx 0xffff80003a3b9a10 rax 0x2a r8 0xffff80003c3f5650 r9 0 r10 0xf4e3e2c2a73c5a9e r11 0x7b498bb58e353a37 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff828434c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c3f56a0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (sh) tid=80751 pid=37890 tcnt=1 stat=onproc flags process=100000 proc=0 runpri=51, usrpri=51, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003a3b94e0,0xffffffff83b323c8 process=0xffff80002a37f038 user=0xffff80003c3f0000, vmspace=0xfffffd806ce2f208 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *37890 80751 71396 0 7 0x100000 0 sh 16069 364082 74147 0 2 0 0 syz-executor 16069 20321 74147 0 7 0 0x4000000 syz-executor 87053 12928 92916 0 2 0x100000 0 sh 26323 513492 80403 0 2 0 0 syz-executor 26323 376895 80403 0 3 0 0x4000080 fsleep syz-executor 71396 222924 39447 0 3 0x100002 0x88 sigsusp sh 92916 414606 34408 0 3 0x100002 0x88 sigsusp sh 25182 330763 33409 0 2 0 0 syz-executor 25182 98884 33409 0 3 0 0x4000080 ttyout syz-executor 25182 441917 33409 0 3 0 0x4000080 fsleep syz-executor 48408 76158 5507 0 2 0 0 syz-executor 48408 198112 5507 0 3 0 0x4000080 fsleep syz-executor 60428 212367 93956 0 2 0 0 syz-executor 60428 342285 93956 0 3 0 0x4000080 fsleep syz-executor 11964 449975 15241 0 2 0x2 0 ifconfig 15241 54536 39283 0 3 0x100002 0x88 sigsusp sh 74147 131723 59311 0 2 0x2 0xc80 syz-executor 80403 197033 59311 0 3 0x2 0x80 nanoslp syz-executor 33409 326770 59311 0 2 0x2 0xc80 syz-executor 5507 190641 59311 0 2 0x2 0xc80 syz-executor 39447 242294 59311 0 3 0x2 0x80 wait syz-executor 34408 216899 59311 0 3 0x2 0x80 wait syz-executor 39283 165404 59311 0 3 0x2 0x80 wait syz-executor 93956 297033 59311 0 3 0x2 0x80 nanoslp syz-executor 59311 450935 60835 0 3 0x2 0x80 kqread syz-executor 60835 366570 55577 0 3 0x100002 0x88 sigsusp ksh 55577 356210 39521 0 3 0x10 0x88 kqread sshd-session 39521 160807 84785 0 3 0x12 0x80 kqread sshd-session 78390 223930 1 0 3 0x100003 0x80 ttyin getty 84785 133917 1 0 3 0 0x88 kqread sshd 86613 151824 96042 74 3 0x1100012 0x80 bpf pflogd 96042 277474 1 0 3 0 0x80 sbwait pflogd 91108 436604 34361 73 3 0x1100010 0x80 kqread syslogd 34361 66130 1 0 3 0x100002 0x80 sbwait syslogd 87436 211841 1 0 3 0x100000 0x80 kqread resolvd 9222 421420 79208 77 3 0x100012 0x80 kqread dhcpleased 78125 221462 79208 77 3 0x100012 0x80 kqread dhcpleased 79208 285943 1 0 3 0 0x80 kqread dhcpleased 85286 238712 0 0 3 0x14000 0x200 bored smr 37327 198583 0 0 2 0x14000 0x200 zerothread 33188 242759 0 0 3 0x14000 0x200 aiodoned aiodoned 26523 55354 0 0 3 0x14000 0x200 syncer update 96539 224621 0 0 3 0x14000 0x200 cleaner cleaner 97262 64493 0 0 3 0x14000 0x200 reaper reaper 99613 97487 0 0 3 0x14000 0x200 pgdaemon pagedaemon 36344 361630 0 0 3 0x14000 0x200 bored viomb 3980 249911 0 0 3 0x14000 0x40000200 acpi0 acpi0 22404 52840 0 0 3 0x14000 0x40000200 idle1 90264 295344 0 0 3 0x14000 0x200 bored softnet1 13035 323889 0 0 3 0x14000 0x200 bored softnet0 62062 383858 0 0 3 0x14000 0x200 smrbar systqmp 36395 432305 0 0 3 0x14000 0x200 bored systq 14340 185503 0 0 3 0x14000 0x200 tmoslp softclockmp 20121 458417 0 0 3 0x14000 0x40000200 tmoslp softclock 69241 254756 0 0 3 0x14000 0x40000200 idle0 1 145855 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806ced6810) #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_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:441 [inline] #2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2777 #3 uvm_fault_upper+0x338 sys/uvm/uvm_fault.c:1131 #4 uvm_fault+0x198 sys/uvm/uvm_fault.c:635 #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 37890 (sh) thread 0xffff80003a3b9a10 (80751) exclusive rwlock amaplk r = 0 (0xfffffd806cbef0d0) #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 (0xfffffd806ce2f308) #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 (0xfffffd806ced6810) #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_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:441 [inline] #2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2777 #3 uvm_fault_upper+0x338 sys/uvm/uvm_fault.c:1131 #4 uvm_fault+0x198 sys/uvm/uvm_fault.c:635 #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 16069 (syz-executor) thread 0xffff80003a3b94e0 (20321) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83b165c0) #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 62062 (systqmp) thread 0xffff800045ffe298 (383858) shared rwlock systqmp r = 0 (0xffffffff8397e878) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11051 12084K 12084K 166960K 12142 0 pcb 17 12K 12K 166960K 22 0 rtable 207 5K 6K 166960K 309 0 pf 34 17K 18K 166960K 45 0 ifaddr 39 6K 6K 166960K 41 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 1486 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1289 81K 81K 166960K 1361 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 21 77K 85K 166960K 134 0 proc 76 131K 164K 166960K 544 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 79 5K 5K 166960K 79 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 2 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 376 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 225 162K 167K 166960K 3076 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 46 92K 102K 166960K 1275 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 24 1K 1K 166960K 24 0 temp 34 9114K 9120K 166960K 3808 0 kqueue 13 20K 20K 166960K 27 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 30 0 27 1 0 1 1 0 8 0 rtentry 176 96 0 1 5 0 5 5 0 8 0 unpcb 144 43 0 24 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 11 0 7 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 72 0 64 2 0 2 2 0 8 0 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 256 372 0 0 24 0 24 24 0 8 0 art_table 40 373 0 0 4 0 4 4 0 8 0 art_node 32 96 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1565 0 99 92 0 92 92 0 8 0 ffsino 296 1565 0 99 113 0 113 113 0 8 0 nchpl 144 1765 0 63 64 0 64 64 0 8 0 vnodes 216 1654 0 0 92 0 92 92 0 8 0 namei 1024 5379 0 5379 2 0 2 2 0 8 2 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 6117 0 6117 4 1 3 3 1 8 3 plimitpl 152 29 0 12 1 0 1 1 0 8 0 sigapl 424 451 0 400 6 0 6 6 0 8 0 knotepl 120 52 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 528 435 0 400 3 0 3 3 0 8 0 filepl 160 1569 0 1352 10 0 10 10 0 8 0 lockfpl 104 8 0 6 1 0 1 1 0 8 0 lockfspl 48 5 0 3 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 88 0 75 1 0 1 1 0 8 0 zombiepl 144 400 0 400 1 0 1 1 0 8 1 processpl 1232 451 0 400 5 0 5 5 0 8 1 procpl 664 460 0 403 5 0 5 5 0 8 0 sockpl 752 145 0 115 4 0 4 4 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k 2048 17 0 0 3 0 3 3 0 8 0 mextrefs 64 14 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 111 0 0 7 0 7 7 0 8 0 bufpl 272 2277 0 105 145 0 145 145 0 8 0 anonpl 32 3605 0 0 30 0 30 30 0 247 0 amapchunkpl 152 8265 0 7785 19 0 19 19 0 158 0 amappl16 200 1296 0 1283 5 0 5 5 0 8 4 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 428 0 422 1 0 1 1 0 8 0 amappl13 176 124 0 112 1 0 1 1 0 8 0 amappl12 168 686 0 653 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 0 1 1 0 8 1 amappl10 152 77 0 63 1 0 1 1 0 8 0 amappl9 144 272 0 272 1 0 1 1 0 8 1 amappl8 136 94 0 92 1 0 1 1 0 8 0 amappl7 128 148 0 134 1 0 1 1 0 8 0 amappl6 120 153 0 147 1 0 1 1 0 8 0 amappl5 112 98 0 86 1 0 1 1 0 8 0 amappl4 104 289 0 269 1 0 1 1 0 8 0 amappl3 96 1471 0 1375 3 0 3 3 0 8 0 amappl2 88 550 0 475 2 0 2 2 0 8 0 amappl1 80 10231 0 9614 14 0 14 14 0 8 0 amappl 88 2373 0 2222 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 2 0 1 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 24 435 0 400 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 435 0 400 1 0 1 1 0 8 0 vmmpekpl 168 5586 0 5555 2 0 2 2 0 8 0 vmmpepl 168 36749 0 34834 85 0 85 85 0 357 1 vmsppl 488 434 0 400 5 0 5 5 0 8 0 rwobjpl 80 13803 0 12770 23 0 23 23 0 8 0 pdppl 4096 877 0 800 93 12 81 81 0 8 4 pvpl 32 9104 0 0 75 0 75 75 0 265 1 pmappl 256 434 0 400 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 398 0 15 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83979ff0) 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(800,20) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline] comcnputc(800,20) at comcnputc+0xd0 sys/dev/ic/com.c:1264 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff834613a7) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83521c81) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c3eef10,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c3eef10) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003a3b94e0,fffffd806ccc8bd0,ffff80003c3ef0d0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 end trace frame: 0xffff80003c3ef140, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83979ff0) 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(800,20) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline] comcnputc(800,20) at comcnputc+0xd0 sys/dev/ic/com.c:1264 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff834613a7) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff83521c81) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c3eef10,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c3eef10) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003a3b94e0,fffffd806ccc8bd0,ffff80003c3ef0d0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff80003a3b94e0,ffff80003c3ef220,ffff80003c3ef170) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80003c3ef220) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ef220) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x43be9208bf0, count: -17 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: 0x7258e8967260, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7258e8967260, count: -1