*cpu1: uvm_fault(0xffffef806cf0d3e8, 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: 0x763a8c9fb300, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c3efb50 rbx 0 rdx 0 rcx 0xffff80003c3b8fb0 rax 0x2a r8 0xffff80003c3efa80 r9 0 r10 0x4b5c0caec7411ec8 r11 0xc95125fd1c04c3c3 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff831454c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c3efad0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (sh) tid=201970 pid=44885 tcnt=1 stat=onproc flags process=100000 proc=0 runpri=53, usrpri=53, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c3b8a80,0xffffffff83af2f68 process=0xffff80002a37e1c8 user=0xffff80003c3ea000, vmspace=0xffffef806cf0dd70 estcpu=27, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *44885 201970 5332 0 7 0x100000 0 sh 49066 170179 50364 0 2 0x100000 0 sh 5332 138270 8818 0 3 0x100002 0x88 sigsusp sh 92898 444433 75830 0 2 0x10 0 syz-executor 92898 205309 75830 0 7 0x10 0x4000000 syz-executor 93642 464489 83995 0 2 0x100000 0 sh 69726 51192 39149 0 2 0 0 syz-executor 69726 69847 39149 0 2 0 0x4000000 syz-executor 32254 260773 69799 0 2 0 0 syz-executor 32254 450802 69799 0 2 0 0x4000000 syz-executor 28596 332222 64349 0 2 0 0 syz-executor 28596 225837 64349 0 3 0 0x4000000 smrbar syz-executor 28596 91660 64349 0 3 0 0x4000080 fsleep syz-executor 99755 97941 59919 0 2 0 0 syz-executor 99755 161387 59919 0 2 0 0x4000000 syz-executor 50364 432799 70411 0 3 0x100002 0x88 sigsusp sh 83995 511153 8850 0 3 0x100002 0x88 sigsusp sh 8850 490774 88954 0 3 0x2 0x80 wait syz-executor 8818 134731 88954 0 3 0x2 0x80 wait syz-executor 70411 491789 88954 0 3 0x2 0x80 wait syz-executor 39149 170929 88954 0 3 0x2 0x80 nanoslp syz-executor 64349 11144 88954 0 3 0x2 0x80 nanoslp syz-executor 59919 46549 88954 0 3 0x2 0x80 nanoslp syz-executor 75830 200711 88954 0 3 0x2 0x80 nanoslp syz-executor 69799 53331 88954 0 3 0x2 0x80 nanoslp syz-executor 88954 355346 87038 0 3 0x2 0x80 kqread syz-executor 87038 229613 1402 0 3 0x100002 0x88 sigsusp ksh 1402 169193 9890 0 3 0x10 0x88 kqread sshd-session 9890 135601 43451 0 3 0x12 0x80 kqread sshd-session 11061 200760 1 0 3 0x100003 0x80 ttyin getty 43451 190560 1 0 3 0 0x88 kqread sshd 53233 44095 4385 74 3 0x1100012 0x80 bpf pflogd 4385 226534 1 0 3 0 0x80 sbwait pflogd 66807 282806 79969 73 3 0x1100010 0x80 kqread syslogd 79969 236600 1 0 3 0x100002 0x80 sbwait syslogd 40621 90982 1 0 3 0x100000 0x80 kqread resolvd 91134 160854 60263 77 3 0x100012 0x80 kqread dhcpleased 36361 405150 60263 77 3 0x100012 0x80 kqread dhcpleased 60263 359205 1 0 3 0 0x80 kqread dhcpleased 43299 177925 0 0 3 0x14000 0x200 bored smr 21070 193012 0 0 2 0x14000 0x200 zerothread 51278 373926 0 0 3 0x14000 0x200 aiodoned aiodoned 99811 203263 0 0 3 0x14000 0x200 syncer update 15438 221374 0 0 3 0x14000 0x200 cleaner cleaner 14922 480342 0 0 3 0x14000 0x200 reaper reaper 6488 15663 0 0 3 0x14000 0x200 pgdaemon pagedaemon 55614 18721 0 0 3 0x14000 0x200 bored viomb 5096 157593 0 0 3 0x14000 0x40000200 acpi0 acpi0 96477 209811 0 0 3 0x14000 0x40000200 idle1 42078 62496 0 0 3 0x14000 0x200 bored softnet1 72807 479836 0 0 3 0x14000 0x200 bored softnet0 10074 89566 0 0 3 0x14000 0x200 bored systqmp 64548 323234 0 0 3 0x14000 0x200 bored systq 14921 38686 0 0 3 0x14000 0x200 tmoslp softclockmp 50395 217472 0 0 3 0x14000 0x40000200 tmoslp softclock 73917 133381 0 0 3 0x14000 0x40000200 idle0 1 269015 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 (0xffffef806ba17f10) #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_lookup+0x30d sys/uvm/uvm_fault.c:-1 #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 44885 (sh) thread 0xffff80003c3b8fb0 (201970) exclusive rwlock amaplk r = 0 (0xffffef806cee9d90) #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 (0xffffef806cf0de70) #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 (0xffffef806ba17f10) #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_lookup+0x30d sys/uvm/uvm_fault.c:-1 #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 92898 (syz-executor) thread 0xffff80003c3b9a10 (205309) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a855c0) #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 28596 (syz-executor) thread 0xffff800045feea78 (225837) exclusive rwlock clonelk r = 0 (0xffffffff839ab808) #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 if_clone_destroy+0x93 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2160 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11051 12092K 12092K 166960K 12142 0 pcb 17 12K 12K 166960K 21 0 rtable 195 5K 5K 166960K 297 0 pf 34 17K 18K 166960K 45 0 ifaddr 37 6K 6K 166960K 39 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 1480 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1288 81K 81K 166960K 1359 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 93K 166960K 130 0 proc 69 115K 180K 166960K 533 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 69 4K 4K 166960K 69 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 373 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 220 161K 169K 166960K 2953 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 46 92K 104K 166960K 1265 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 12 0K 1K 166960K 22 0 temp 34 9114K 9120K 166960K 3845 0 kqueue 13 20K 20K 166960K 25 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 30 0 27 1 0 1 1 0 8 0 rtentry 176 90 0 1 5 0 5 5 0 8 0 unpcb 144 41 0 22 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 8 0 4 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 65 0 55 1 0 1 1 0 8 0 nd6 152 15 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 15 0 0 1 0 1 1 0 8 0 pfstkey 128 15 0 0 1 0 1 1 0 8 0 pfstate 448 15 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 256 333 0 0 21 0 21 21 0 8 0 art_table 40 334 0 0 4 0 4 4 0 8 0 art_node 32 90 0 8 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1563 0 95 92 0 92 92 0 8 0 ffsino 296 1563 0 95 113 0 113 113 0 8 0 nchpl 144 1760 0 56 64 0 64 64 0 8 0 vnodes 216 1651 0 0 92 0 92 92 0 8 0 namei 1024 5339 0 5339 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 6039 0 6039 4 2 2 3 1 8 2 plimitpl 152 29 0 12 1 0 1 1 0 8 0 sigapl 424 447 0 396 7 0 7 7 0 8 0 knotepl 120 50 0 0 2 0 2 2 0 8 0 kqueuepl 224 21 0 12 1 0 1 1 0 8 0 pipepl 344 126 0 99 3 0 3 3 0 8 0 fdescpl 528 431 0 396 3 0 3 3 0 8 0 filepl 160 1545 0 1327 10 0 10 10 0 8 0 lockfpl 104 7 0 4 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 32 0 15 1 0 1 1 0 8 0 ucredpl 104 83 0 69 1 0 1 1 0 8 0 zombiepl 144 396 0 396 1 0 1 1 0 8 1 processpl 1232 447 0 396 5 0 5 5 0 8 0 procpl 664 454 0 397 5 0 5 5 0 8 0 sockpl 752 136 0 104 4 0 4 4 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 7 0 0 1 0 1 1 0 8 0 mextrefs 64 4 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 120 0 0 8 0 8 8 0 8 0 bufpl 272 2276 0 105 145 0 145 145 0 8 0 anonpl 32 3820 0 0 31 0 31 31 0 247 0 amapchunkpl 152 8031 0 7593 17 0 17 17 0 158 0 amappl16 200 1835 0 1823 5 1 4 5 0 8 3 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 422 0 416 1 0 1 1 0 8 0 amappl13 176 120 0 108 1 0 1 1 0 8 0 amappl12 168 689 0 657 2 0 2 2 0 8 0 amappl11 160 26 0 26 1 1 0 1 0 8 0 amappl10 152 65 0 50 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 1 0 1 0 8 0 amappl8 136 98 0 96 1 0 1 1 0 8 0 amappl7 128 166 0 153 1 0 1 1 0 8 0 amappl6 120 152 0 147 1 0 1 1 0 8 0 amappl5 112 101 0 90 1 0 1 1 0 8 0 amappl4 104 280 0 262 1 0 1 1 0 8 0 amappl3 96 1384 0 1299 3 0 3 3 0 8 0 amappl2 88 552 0 474 2 0 2 2 0 8 0 amappl1 80 10314 0 9692 14 0 14 14 0 8 0 amappl 88 2241 0 2094 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 431 0 396 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 431 0 396 1 0 1 1 0 8 0 vmmpekpl 168 5568 0 5537 2 0 2 2 0 8 0 vmmpepl 168 37225 0 35326 84 0 84 84 0 357 1 vmsppl 488 430 0 396 5 0 5 5 0 8 0 rwobjpl 80 14357 0 13340 24 0 24 24 0 8 2 pdppl 4096 869 0 792 95 16 79 85 0 8 2 pvpl 32 9070 0 0 75 0 75 75 0 265 1 pmappl 256 430 0 396 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 396 0 19 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: 0x763a8c9fb300, 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(3f8,0,6b) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:790 comcnputc(800,6b) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,6b) at comcnputc+0x1ab sys/dev/ic/com.c:1268 cnputc(6b) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(6b) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x223 sys/kern/subr_prf.c:723 db_printf(ffffffff83546dbf) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c3e3890) at db_ktrap+0xe3 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80003c3e3890) at db_ktrap+0xe3 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c3e3890) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003c3b9a10,ffffef806c8e8360,ffff80003c3e3a70) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimes(ffff80003c3b9a10,ffff80003c3e3bc0,ffff80003c3e3b10) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2733 end trace frame: 0xffff80003c3e3bb0, 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(3f8,0,6b) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:790 comcnputc(800,6b) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,6b) at comcnputc+0x1ab sys/dev/ic/com.c:1268 cnputc(6b) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(6b) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x223 sys/kern/subr_prf.c:723 db_printf(ffffffff83546dbf) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c3e3890) at db_ktrap+0xe3 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80003c3e3890) at db_ktrap+0xe3 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c3e3890) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003c3b9a10,ffffef806c8e8360,ffff80003c3e3a70) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimes(ffff80003c3b9a10,ffff80003c3e3bc0,ffff80003c3e3b10) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2733 syscall(ffff80003c3e3bc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3e3bc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x358279a6ab0, count: -16