*cpu1: uvm_fault(0xfffff1006cd077c0, 0x98, 0, 1) -> e ddb{0}> show kasan No such command ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x770fc44d9668, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003839d340 rbx 0 rdx 0 rcx 0xffff800045fef240 rax 0x3c r8 0xffff80003839d270 r9 0 r10 0x296364427791784d r11 0x620024164240ae29 r12 0 r13 0 r14 0xffff800045fef240 r15 0 rip 0xffffffff81d9c3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003839d2c0 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{0}> show proc PROC (ndp) tid=246008 pid=90644 tcnt=1 stat=onproc flags process=2 proc=0 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045fef770,0xffff80003abb8fc0 process=0xffff80003c3ce6a0 user=0xffff800038398000, vmspace=0xfffff1006cd075d8 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 67584 238967 63966 0 2 0 0 syz-executor 67584 109996 63966 0 7 0 0x4000000 syz-executor 63708 311635 62611 0 2 0 0 syz-executor 63708 103645 62611 0 3 0 0x4000080 fsleep syz-executor 94712 137910 42224 0 3 0 0x80 nanoslp syz-executor 94712 189946 42224 0 3 0 0x4000080 kqpoll syz-executor 94712 338365 42224 0 3 0 0x4000080 fsleep syz-executor *90644 246008 43282 0 7 0x2 0 ndp 43282 122349 57312 0 3 0x100002 0x88 sigsusp sh 45368 393103 56437 0 3 0 0x80 nanoslp syz-executor 45368 469499 56437 0 3 0 0x4000080 ttyin syz-executor 45368 517201 56437 0 3 0 0x4000080 fsleep syz-executor 24083 458622 61720 0 3 0 0x80 nanoslp syz-executor 24083 136993 61720 0 3 0 0x4000080 sbwait syz-executor 24083 468425 61720 0 3 0 0x4000080 fsleep syz-executor 29692 15748 98157 60929 3 0x10 0x80 nanoslp syz-executor 29692 307977 98157 60929 3 0x10 0x4000080 ttyretype syz-executor 57312 187067 58814 0 3 0x2 0x80 wait syz-executor 61720 342522 58814 0 3 0x2 0x80 nanoslp syz-executor 56437 248961 58814 0 3 0x2 0x80 nanoslp syz-executor 42224 396402 58814 0 3 0x2 0x80 nanoslp syz-executor 74682 124736 58814 0 3 0x2 0 biowait syz-executor 98157 451329 58814 0 3 0x2 0x80 nanoslp syz-executor 62611 162815 58814 0 3 0x2 0x80 nanoslp syz-executor 63966 199543 58814 0 3 0x2 0x80 nanoslp syz-executor 58814 275101 84974 0 3 0x2 0x80 kqread syz-executor 84974 301142 89833 0 3 0x100002 0x88 sigsusp ksh 89833 66326 66743 0 3 0x10 0x88 kqread sshd-session 66743 226069 61767 0 3 0x12 0x80 kqread sshd-session 28913 410356 1 0 3 0x100003 0x80 ttyin getty 61767 303945 1 0 3 0 0x88 kqread sshd 85423 348119 7408 74 3 0x1100012 0x80 bpf pflogd 7408 396719 1 0 3 0 0x80 sbwait pflogd 48469 454734 41411 73 3 0x1100010 0x80 kqread syslogd 41411 192478 1 0 3 0x100002 0x80 sbwait syslogd 36176 282359 1 0 3 0x100000 0x80 kqread resolvd 95444 106405 42740 77 3 0x100012 0x80 kqread dhcpleased 31690 431727 42740 77 3 0x100012 0x80 kqread dhcpleased 42740 138396 1 0 3 0 0x80 kqread dhcpleased 99272 176600 0 0 3 0x14000 0x200 bored smr 27079 344194 0 0 2 0x14000 0x200 zerothread 13762 71843 0 0 3 0x14000 0x200 aiodoned aiodoned 70643 309145 0 0 3 0x14000 0x200 syncer update 48710 299438 0 0 3 0x14000 0x200 cleaner cleaner 93497 505850 0 0 3 0x14000 0x200 reaper reaper 11555 230003 0 0 3 0x14000 0x200 pgdaemon pagedaemon 6244 52686 0 0 3 0x14000 0x200 bored viomb 2787 47026 0 0 3 0x14000 0x40000200 acpi0 acpi0 3964 235475 0 0 3 0x14000 0x40000200 idle1 83106 355771 0 0 3 0x14000 0x200 bored softnet1 90802 181143 0 0 3 0x14000 0x200 bored softnet0 60145 402891 0 0 3 0x14000 0x200 bored systqmp 12137 450025 0 0 3 0x14000 0x200 bored systq 50769 308161 0 0 3 0x14000 0x200 tmoslp softclockmp 33059 392890 0 0 3 0x14000 0x40000200 tmoslp softclock 89987 337995 0 0 3 0x14000 0x40000200 idle0 1 131059 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 &sched_lock r = 0 (0xffffffff83ae3390) #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 sleep_finish+0x1d6 sys/kern/kern_synch.c:357 #3 msleep_nsec+0x132 sys/kern/kern_synch.c:219 #4 kqueue_sleep+0x127 sys/kern/kern_event.c:1626 #5 kqueue_scan+0x223 sys/kern/kern_event.c:1681 #6 dopselect+0x53e sys/kern/sys_generic.c:695 #7 sys_pselect+0x25a sys/kern/sys_generic.c:593 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 67584 (syz-executor) thread 0xffff80003abb9ca8 (109996) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a3ce40) #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 74682 (syz-executor) thread 0xffff80002a2227d8 (124736) exclusive rrwlock inode r = 0 (0xfffff1006cb3f8e0) #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 (0xfffff1006d56cb20) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11059 12150K 12344K 166960K 12173 0 pcb 17 12K 12K 166960K 22 0 rtable 235 6K 6K 166960K 351 0 pf 34 17K 19K 166960K 46 0 ifaddr 43 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 1488 0 iov 1 12K 28K 166960K 4 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1293 81K 81K 166960K 1375 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 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 18 65K 89K 166960K 155 0 proc 70 115K 180K 166960K 552 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 9 0 in_multi 99 6K 6K 166960K 99 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 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 392 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 234 168K 177K 166960K 3276 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 44 88K 102K 166960K 1341 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 28 2K 2K 166960K 28 0 temp 35 9114K 9178K 166960K 4014 0 kqueue 13 20K 22K 166960K 28 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 35 0 32 1 0 1 1 0 8 0 rtentry 176 110 0 1 5 0 5 5 0 8 0 unpcb 144 61 0 42 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 16 0 11 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 90 0 81 2 0 2 2 0 8 1 nd6 152 23 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 19 0 0 1 0 1 1 0 8 0 pfstkey 128 19 0 0 1 0 1 1 0 8 0 pfstate 448 19 0 0 3 0 3 3 0 8 0 pfrule 1360 22 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 451 0 0 29 0 29 29 0 8 0 art_table 40 452 0 0 5 0 5 5 0 8 0 art_node 32 110 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 72 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1588 0 120 92 0 92 92 0 8 0 ffsino 296 1588 0 120 114 0 114 114 0 8 0 nchpl 144 1808 0 113 64 0 64 64 0 8 0 vnodes 216 1689 0 0 94 0 94 94 0 8 0 namei 1024 5593 0 5592 2 0 2 2 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 6128 0 6127 4 2 2 3 1 8 1 plimitpl 152 33 0 14 1 0 1 1 0 8 0 sigapl 424 481 0 433 7 0 7 7 0 8 1 knotepl 120 288 0 0 9 0 9 9 0 8 0 kqueuepl 224 25 0 15 1 0 1 1 0 8 0 pipepl 344 129 0 102 3 0 3 3 0 8 0 fdescpl 528 465 0 433 3 0 3 3 0 8 0 filepl 160 1687 0 1468 10 0 10 10 0 8 0 lockfpl 104 16 0 12 1 0 1 1 0 8 0 lockfspl 48 10 0 6 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 104 107 0 93 1 0 1 1 0 8 0 zombiepl 144 433 0 433 1 0 1 1 0 8 1 processpl 1232 481 0 433 5 0 5 5 0 8 0 procpl 664 512 0 455 5 0 5 5 0 8 0 sockpl 752 186 0 155 4 0 4 4 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mextrefs 64 17 0 0 1 0 1 1 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 129 0 0 9 0 9 9 0 8 0 bufpl 272 2301 0 105 147 0 147 147 0 8 0 anonpl 32 3709 0 0 30 0 30 30 0 247 0 amapchunkpl 152 8830 0 8357 20 0 20 20 0 158 0 amappl16 200 1615 0 1595 5 0 5 5 0 8 3 amappl15 192 9 0 9 1 0 1 1 0 8 1 amappl14 184 440 0 437 1 0 1 1 0 8 0 amappl13 176 122 0 109 1 0 1 1 0 8 0 amappl12 168 725 0 695 2 0 2 2 0 8 0 amappl11 160 22 0 22 1 0 1 1 0 8 1 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 282 0 282 1 0 1 1 0 8 1 amappl8 136 100 0 98 1 0 1 1 0 8 0 amappl7 128 167 0 153 1 0 1 1 0 8 0 amappl6 120 177 0 174 1 0 1 1 0 8 0 amappl5 112 126 0 116 1 0 1 1 0 8 0 amappl4 104 298 0 279 1 0 1 1 0 8 0 amappl3 96 1559 0 1465 3 0 3 3 0 8 0 amappl2 88 584 0 509 2 0 2 2 0 8 0 amappl1 80 10595 0 9960 15 0 15 15 0 8 1 amappl 88 2522 0 2365 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 24 465 0 433 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 465 0 433 1 0 1 1 0 8 0 vmmpekpl 168 5839 0 5808 2 0 2 2 0 8 0 vmmpepl 168 39217 0 37300 86 0 86 86 0 357 0 vmsppl 488 464 0 433 5 0 5 5 0 8 0 rwobjpl 80 14645 0 13590 24 0 24 24 0 8 1 pdppl 4096 937 0 866 101 16 85 85 0 8 14 pvpl 32 9677 0 0 79 0 79 79 0 265 0 pmappl 256 464 0 433 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 418 0 18 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: 0x770fc44d9668, 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(3f8,0,61) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:790 comcnputc(800,61) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,61) at comcnputc+0x1ab sys/dev/ic/com.c:1268 cnputc(61) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(61) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff834b3715) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c3ef110) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline] db_ktrap(6,0,ffff80003c3ef110) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c3ef110) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003abb9ca8,fffff1006cb406d0,ffff80003c3ef2d0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff80003abb9ca8,ffff80003c3ef420,ffff80003c3ef370) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 end trace frame: 0xffff80003c3ef410, 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(3f8,0,61) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:790 comcnputc(800,61) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,61) at comcnputc+0x1ab sys/dev/ic/com.c:1268 cnputc(61) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(61) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff834b3715) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c3ef110) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline] db_ktrap(6,0,ffff80003c3ef110) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c3ef110) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003abb9ca8,fffff1006cb406d0,ffff80003c3ef2d0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff80003abb9ca8,ffff80003c3ef420,ffff80003c3ef370) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80003c3ef420) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3ef420) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x566cc6e6190, count: -16