*cpu1: uvm_fault(0xfffff9006cd3f208, 0x98, 0, 1) -> e ddb{0}> show kasan No such command ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x751592323630, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003b7a92f0 rbx 0 rdx 0 rcx 0xffff80003c3b8fb0 rax 0x3c r8 0xffff80003b7a9220 r9 0 r10 0x4b5a76ddf2c9918a r11 0xd25152e6606d0716 r12 0 r13 0 r14 0xffff80003c3b8fb0 r15 0 rip 0xffffffff8140b3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003b7a9270 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=451219 pid=37274 tcnt=4 stat=onproc flags process=0 proc=0 runpri=50, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c3b9248,0xffff80003c3b82c8 process=0xffff80002a37f9d8 user=0xffff80003b7a4000, vmspace=0xfffff9006cd3f208 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 *37274 451219 40040 0 7 0 0 syz-executor 37274 343755 40040 0 2 0 0x4000000 syz-executor 37274 8020 40040 0 7 0 0x4000000 syz-executor 37274 316399 40040 0 3 0 0x4000080 fsleep syz-executor 59369 173917 89275 0 2 0 0 syz-executor 59369 331271 89275 0 3 0 0x4000080 fsleep syz-executor 46713 440223 36061 0 2 0x100002 0 sh 88893 387773 6287 0 2 0x2 0 sh 78286 426742 29831 0 2 0 0 syz-executor 88284 121273 66089 0 2 0 0 syz-executor 88284 339075 66089 0 3 0 0x4000080 fsleep syz-executor 88284 125854 66089 0 3 0 0x4000080 fsleep syz-executor 13536 196803 31937 0 2 0 0 syz-executor 13536 335797 31937 0 3 0 0x4000080 fsleep syz-executor 13536 286302 31937 0 3 0 0x4000080 fsleep syz-executor 88657 287304 28920 0 2 0 0 syz-executor 36061 297843 48316 0 3 0x2 0x80 wait syz-executor 40040 323053 48316 0 3 0x2 0x80 nanoslp syz-executor 28920 2910 48316 0 3 0x2 0x80 nanoslp syz-executor 66089 508536 48316 0 2 0x2 0 syz-executor 6287 177242 48316 0 3 0x2 0x80 wait syz-executor 31937 426155 48316 0 3 0x2 0x80 nanoslp syz-executor 29831 357558 48316 0 3 0x2 0x80 nanoslp syz-executor 89275 287002 48316 0 3 0x2 0x80 nanoslp syz-executor 48316 500117 10818 0 3 0x2 0x80 kqread syz-executor 10818 405908 88649 0 3 0x100002 0x88 sigsusp ksh 88649 159302 49866 0 3 0x10 0x88 kqread sshd-session 49866 140142 3710 0 3 0x12 0x80 kqread sshd-session 90648 180564 1 0 3 0x100003 0x80 ttyin getty 3710 148469 1 0 3 0 0x88 kqread sshd 76784 201170 78544 74 3 0x1100012 0x80 bpf pflogd 78544 65954 1 0 3 0 0x80 sbwait pflogd 1266 313191 21542 73 3 0x1100010 0x80 kqread syslogd 21542 414033 1 0 3 0x100002 0x80 sbwait syslogd 17433 17488 1 0 3 0x100000 0x80 kqread resolvd 49617 171214 61713 77 3 0x100012 0x80 kqread dhcpleased 7204 442228 61713 77 3 0x100012 0x80 kqread dhcpleased 61713 109051 1 0 3 0 0x80 kqread dhcpleased 81263 144247 0 0 3 0x14000 0x200 bored smr 3856 90102 0 0 2 0x14000 0x200 zerothread 72700 390558 0 0 3 0x14000 0x200 aiodoned aiodoned 64529 248350 0 0 3 0x14000 0x200 syncer update 72846 325469 0 0 3 0x14000 0x200 cleaner cleaner 95344 265965 0 0 3 0x14000 0x200 reaper reaper 71710 198434 0 0 3 0x14000 0x200 pgdaemon pagedaemon 57239 476943 0 0 3 0x14000 0x200 bored viomb 46147 511105 0 0 3 0x14000 0x40000200 acpi0 acpi0 7169 343852 0 0 3 0x14000 0x40000200 idle1 29758 456666 0 0 3 0x14000 0x200 bored softnet1 71182 423386 0 0 3 0x14000 0x200 bored softnet0 20102 195479 0 0 3 0x14000 0x200 smrbar systqmp 28594 231040 0 0 3 0x14000 0x200 bored systq 15746 239863 0 0 3 0x14000 0x200 tmoslp softclockmp 70516 9312 0 0 3 0x14000 0x40000200 tmoslp softclock 38176 53435 0 0 3 0x14000 0x40000200 idle0 1 268606 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 &map->flags_lock r = 0 (0xfffff9006cd3f380) #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 vm_map_lock_ln+0x66 sys/uvm/uvm_map.c:5157 #3 uvm_map_protect+0xe0 sys/uvm/uvm_map.c:3075 #4 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 37274 (syz-executor) thread 0xffff80003c3b9ca8 (8020) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839f8700) #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 20102 (systqmp) thread 0xffff800045ffe298 (195479) shared rwlock systqmp r = 0 (0xffffffff83991e98) #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 11051 12085K 12085K 166960K 12142 0 pcb 17 12K 12K 166960K 17 0 rtable 221 6K 6K 166960K 327 0 pf 34 17K 19K 166960K 47 0 ifaddr 41 7K 7K 166960K 43 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 1485 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1322 83K 83K 166960K 1391 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 18 65K 93K 166960K 134 0 proc 70 115K 164K 166960K 546 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 4 0 in_multi 89 6K 6K 166960K 89 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 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 378 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 160K 169K 166960K 3001 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 104K 166960K 1280 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 26 1K 1K 166960K 26 0 temp 34 9114K 9120K 166960K 3839 0 kqueue 13 20K 24K 166960K 27 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 31 0 28 1 0 1 1 0 8 0 rtentry 176 103 0 1 5 0 5 5 0 8 0 unpcb 144 39 0 22 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 67 0 60 1 0 1 1 0 8 0 nd6 152 20 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 17 0 0 1 0 1 1 0 8 0 pfstkey 128 17 0 0 1 0 1 1 0 8 0 pfstate 448 17 0 0 2 0 2 2 0 8 0 pfrule 1360 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 412 0 0 26 0 26 26 0 8 0 art_table 40 413 0 0 5 0 5 5 0 8 0 art_node 32 103 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1562 0 95 92 0 92 92 0 8 0 ffsino 296 1562 0 95 113 0 113 113 0 8 0 nchpl 144 1758 0 59 63 0 63 63 0 8 0 vnodes 216 1682 0 0 94 0 94 94 0 8 0 namei 1024 5396 0 5396 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 6074 0 6074 4 1 3 3 1 8 3 plimitpl 152 29 0 12 1 0 1 1 0 8 0 sigapl 424 451 0 403 7 0 7 7 0 8 0 knotepl 120 480 0 0 15 0 15 15 0 8 0 kqueuepl 224 23 0 14 1 0 1 1 0 8 0 pipepl 344 126 0 99 3 0 3 3 0 8 0 fdescpl 528 435 0 403 3 0 3 3 0 8 0 filepl 160 1587 0 1344 11 0 11 11 0 8 0 lockfpl 104 39 0 4 1 0 1 1 0 8 0 lockfspl 48 37 0 2 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 83 0 70 1 0 1 1 0 8 0 zombiepl 144 403 0 403 1 0 1 1 0 8 1 processpl 1232 451 0 403 5 0 5 5 0 8 1 procpl 664 467 0 411 5 0 5 5 0 8 0 sockpl 752 137 0 110 4 0 4 4 0 8 1 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 11 0 0 2 0 2 2 0 8 0 mextrefs 64 5 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 110 0 0 7 0 7 7 0 8 0 bufpl 272 2274 0 105 145 0 145 145 0 8 0 anonpl 32 3828 0 0 31 0 31 31 0 247 0 amapchunkpl 152 8245 0 7813 17 0 17 17 0 158 0 amappl16 200 1841 0 1827 5 0 5 5 0 8 4 amappl15 192 12 0 12 1 0 1 1 0 8 1 amappl14 184 427 0 425 1 0 1 1 0 8 0 amappl13 176 119 0 107 1 0 1 1 0 8 0 amappl12 168 681 0 651 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 275 0 275 1 0 1 1 0 8 1 amappl8 136 95 0 94 1 0 1 1 0 8 0 amappl7 128 150 0 137 1 0 1 1 0 8 0 amappl6 120 155 0 151 1 0 1 1 0 8 0 amappl5 112 100 0 89 1 0 1 1 0 8 0 amappl4 104 285 0 266 1 0 1 1 0 8 0 amappl3 96 1404 0 1320 3 0 3 3 0 8 0 amappl2 88 552 0 476 2 0 2 2 0 8 0 amappl1 80 10457 0 9860 15 0 15 15 0 8 1 amappl 88 2291 0 2146 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 24 435 0 403 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 435 0 403 1 0 1 1 0 8 0 vmmpekpl 168 5632 0 5600 2 0 2 2 0 8 0 vmmpepl 168 37451 0 35614 86 0 86 86 0 357 1 vmsppl 488 434 0 403 5 0 5 5 0 8 1 rwobjpl 80 14475 0 13483 24 0 24 24 0 8 1 pdppl 4096 877 0 806 95 10 85 85 0 8 14 pvpl 32 8865 0 0 72 0 72 72 0 265 0 pmappl 256 434 0 403 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 401 0 12 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x751592323630, 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_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682 acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120 comcnputc(800,66) at comcnputc+0x29b sys/dev/ic/com.c:1274 cnputc(66) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(66) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff834b2754) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c3c5060) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline] db_ktrap(6,0,ffff80003c3c5060) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c3c5060) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003c3b9ca8,fffff900666dd298,ffff80003c3c5240) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 end trace frame: 0xffff80003c3c52b0, 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_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682 acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120 comcnputc(800,66) at comcnputc+0x29b sys/dev/ic/com.c:1274 cnputc(66) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(66) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff834b2754) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c3c5060) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline] db_ktrap(6,0,ffff80003c3c5060) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c3c5060) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003c3b9ca8,fffff900666dd298,ffff80003c3c5240) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimes(ffff80003c3b9ca8,ffff80003c3c5390,ffff80003c3c52e0) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2733 syscall(ffff80003c3c5390) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3c5390) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe94b0dd5750, count: -17