*cpu0: uvm_fault(0xfffff4006c6a95d0, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7d4842cfbdf0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c3bfaa0 rbx 0 rdx 0 rcx 0xffff800039fb94e0 rax 0x2a r8 0xffff80003c3bf9d0 r9 0x4b3bf9b8001 r10 0x3b6f4a9d3c8deacb r11 0x91ffd660e2393132 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff820d44c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c3bfa20 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=471083 pid=35266 tcnt=1 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=0xffff800039fb87e8,0xffffffff83b41d08 process=0xffff80003c3d5d00 user=0xffff80003c3ba000, vmspace=0xfffff4006c6a9d70 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *35266 471083 94401 0 7 0 syz-executor 4947 95741 86597 0 2 0 syz-executor 4947 333538 86597 0 7 0x4000000 syz-executor 7370 520739 19090 0 3 0x80 nanoslp syz-executor 7370 312400 19090 0 3 0x4000088 kqpoll syz-executor 7370 285148 19090 0 3 0x4000080 fsleep syz-executor 26294 199955 66215 0 3 0x80 nanoslp syz-executor 26294 234203 66215 0 3 0x4000080 fsleep syz-executor 26294 316516 66215 0 3 0x4000080 ttyout syz-executor 26294 10534 66215 0 3 0x4000080 fsleep syz-executor 82430 1588 10343 0 3 0x80 nanoslp syz-executor 82430 114146 10343 0 3 0x4000080 kqsel syz-executor 82430 375806 10343 0 3 0x4000080 kqsel syz-executor 82430 224353 10343 0 3 0x4000080 fsleep syz-executor 14883 474638 75503 -1 3 0x90 nanoslp syz-executor 14883 444048 75503 -1 3 0x4000090 kqsel syz-executor 14883 410871 75503 -1 3 0x4000090 fsleep syz-executor 8175 233420 52907 0 3 0x80 nanoslp syz-executor 8175 321073 52907 0 3 0x4000080 netcon syz-executor 8175 93285 52907 0 3 0x4000080 fsleep syz-executor 8175 422340 52907 0 3 0x4000080 fsleep syz-executor 13499 103341 64812 0 3 0x80 nanoslp syz-executor 13499 274757 64812 0 3 0x4000080 nanoslp syz-executor 98987 110374 0 0 3 0x14280 nfsidl nfsio 49836 494208 0 0 3 0x14280 nfsidl nfsio 29587 124309 0 0 3 0x14280 nfsidl nfsio 26389 350115 0 0 3 0x14280 nfsidl nfsio 96478 431685 0 0 3 0x14280 nfsidl nfsio 43934 42830 0 0 3 0x14280 nfsidl nfsio 31576 342459 0 0 3 0x14280 nfsidl nfsio 29378 449393 0 0 3 0x14280 nfsidl nfsio 90560 42129 0 0 3 0x14280 nfsidl nfsio 58885 153038 0 0 3 0x14280 nfsidl nfsio 80018 207076 0 0 3 0x14280 nfsidl nfsio 13134 497009 0 0 3 0x14280 nfsidl nfsio 65630 213221 0 0 3 0x14280 nfsidl nfsio 85651 337311 0 0 3 0x14280 nfsidl nfsio 28009 512122 0 0 3 0x14280 nfsidl nfsio 25119 341611 0 0 3 0x14280 nfsidl nfsio 99056 308061 0 0 3 0x14280 nfsidl nfsio 21501 372090 0 0 3 0x14280 nfsidl nfsio 42134 280203 0 0 3 0x14280 nfsidl nfsio 99895 291372 0 0 3 0x14280 nfsidl nfsio 86597 389386 98014 0 3 0x82 nanoslp syz-executor 75503 511855 98014 0 3 0x82 nanoslp syz-executor 66215 56414 98014 0 3 0x82 nanoslp syz-executor 64812 86502 98014 0 3 0x82 nanoslp syz-executor 94401 304733 98014 0 3 0x82 nanoslp syz-executor 52907 285747 98014 0 3 0x82 nanoslp syz-executor 10343 243803 98014 0 3 0x82 nanoslp syz-executor 19090 197938 98014 0 3 0x82 nanoslp syz-executor 98014 280166 17482 0 3 0x82 kqread syz-executor 17482 100869 68755 0 3 0x10008a sigsusp ksh 68755 306724 40883 0 3 0x98 kqread sshd-session 40883 76257 69018 0 3 0x92 kqread sshd-session 32610 62432 1 0 3 0x100083 ttyin getty 69018 456180 1 0 3 0x88 kqread sshd 5980 229123 50571 74 3 0x1100092 bpf pflogd 50571 292631 1 0 3 0x80 sbwait pflogd 63612 50740 45762 73 3 0x1100090 kqread syslogd 45762 151958 1 0 3 0x100082 sbwait syslogd 95229 319407 1 0 3 0x100080 kqread resolvd 36660 476125 34858 77 3 0x100092 kqread dhcpleased 36844 290760 34858 77 3 0x100092 kqread dhcpleased 34858 208283 1 0 3 0x80 kqread dhcpleased 46655 288794 0 0 3 0x14200 bored smr 33350 325075 0 0 3 0x14200 pgzero zerothread 51492 317388 0 0 3 0x14200 aiodoned aiodoned 78887 58368 0 0 3 0x14200 syncer update 60255 177994 0 0 3 0x14200 cleaner cleaner 55018 128438 0 0 3 0x14200 reaper reaper 21774 46391 0 0 3 0x14200 pgdaemon pagedaemon 31214 15284 0 0 3 0x14200 bored viomb 72178 205991 0 0 3 0x40014200 acpi0 acpi0 62030 196150 0 0 3 0x40014200 idle1 37441 391641 0 0 3 0x14200 bored softnet1 52647 497376 0 0 3 0x14200 bored softnet0 301 302618 0 0 3 0x14200 bored systqmp 70297 100423 0 0 3 0x14200 bored systq 418 315714 0 0 3 0x14200 tmoslp softclockmp 86614 294727 0 0 3 0x40014200 tmoslp softclock 86292 202316 0 0 3 0x40014200 idle0 1 109128 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffff4006c544610) #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 35266 (syz-executor) thread 0xffff800039fb94e0 (471083) exclusive rwlock amaplk r = 0 (0xfffff4006d920720) #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 (0xfffff4006c6a9e70) #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 (0xfffff4006c544610) #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 4947 (syz-executor) thread 0xffff800039fb87e8 (333538) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83b2df00) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11064 12089K 12291K 166960K 12452 0 pcb 17 12K 12K 166960K 45 0 rtable 241 9K 9K 166960K 395 0 pf 36 17K 20K 166960K 108 0 ifaddr 42 7K 7K 166960K 49 0 ifgroup 59 2K 2K 166960K 66 0 sysctl 3 1K 9K 166960K 7 0 counters 72 37K 37K 166960K 80 0 ioctlops 0 0K 4K 166960K 1578 0 iov 0 0K 16K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1355 85K 86K 166960K 1567 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 239 0 proc 75 131K 164K 166960K 578 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 94 6K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 49 228K 228K 166960K 49 0 exec 0 0K 1K 166960K 409 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 243 167K 185K 166960K 3899 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 43 86K 104K 166960K 1405 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 9 0 NDP 13 0K 2K 166960K 32 0 temp 41 9111K 9118K 166960K 8190 0 kqueue 14 22K 24K 166960K 40 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 101 0 98 3 0 3 3 0 8 2 rtentry 176 116 0 12 5 0 5 5 0 8 0 unpcb 144 165 0 146 4 0 4 4 0 8 3 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 31 0 25 1 0 1 1 0 8 0 arp 136 18 0 2 1 0 1 1 0 8 0 inpcb 328 157 0 145 2 0 2 2 0 8 0 nd6 152 25 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 3 0 3 1 0 1 1 0 8 1 pffrag 232 2 0 1 1 0 1 1 0 482 0 pffrnode 88 2 0 1 1 0 1 1 0 8 0 pffrent 40 4 0 3 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 30 0 0 1 0 1 1 0 8 0 pfstkey 128 30 0 0 1 0 1 1 0 8 0 pfstate 448 30 0 0 4 0 4 4 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 501 0 44 29 0 29 29 0 8 0 art_table 40 503 0 44 5 0 5 5 0 8 0 art_node 32 116 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 72 6 0 3 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1797 0 332 93 0 93 93 0 8 0 ffsino 296 1797 0 332 114 0 114 114 0 8 0 nchpl 144 2132 0 433 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 1999 0 0 112 0 112 112 0 8 0 namei 1024 6861 0 6861 2 0 2 2 0 8 2 percpumem 16 55 0 4 1 0 1 1 0 8 0 kstatmem 264 35 0 4 3 0 3 3 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 7367 0 7367 9 1 8 8 1 8 8 plimitpl 152 39 0 20 1 0 1 1 0 8 0 sigapl 424 578 0 510 9 0 9 9 0 8 1 knotepl 120 266 0 0 9 0 9 9 0 8 0 kqueuepl 224 56 0 42 2 0 2 2 0 8 1 pipepl 344 130 0 103 3 0 3 3 0 8 0 fdescpl 528 542 0 510 3 0 3 3 0 8 0 filepl 160 2679 0 2454 18 0 18 18 0 8 8 lockfpl 104 58 0 55 1 0 1 1 0 8 0 lockfspl 48 30 0 27 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 34 0 17 1 0 1 1 0 8 0 ucredpl 104 392 0 378 1 0 1 1 0 8 0 zombiepl 144 510 0 510 1 0 1 1 0 8 1 processpl 1232 578 0 510 6 0 6 6 0 8 0 procpl 664 768 0 685 8 0 8 8 0 8 0 sockpl 752 428 0 394 11 0 11 11 0 8 6 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 129 0 0 17 0 17 17 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 146 0 0 10 0 10 10 0 8 0 bufpl 280 2522 0 105 173 0 173 173 0 8 0 anonpl 32 3866 0 0 32 0 32 32 0 246 0 amapchunkpl 152 11061 0 10549 23 1 22 22 0 158 0 amappl16 200 1446 0 1422 4 1 3 4 0 8 1 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 431 0 430 1 0 1 1 0 8 0 amappl13 176 145 0 133 1 0 1 1 0 8 0 amappl12 168 793 0 762 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 65 0 51 1 0 1 1 0 8 0 amappl9 144 274 0 274 1 1 0 1 0 8 0 amappl8 136 101 0 99 1 0 1 1 0 8 0 amappl7 128 150 0 137 1 0 1 1 0 8 0 amappl6 120 181 0 180 1 0 1 1 0 8 0 amappl5 112 115 0 104 1 0 1 1 0 8 0 amappl4 104 296 0 276 1 0 1 1 0 8 0 amappl3 96 2164 0 2047 4 0 4 4 0 8 0 amappl2 88 558 0 496 2 0 2 2 0 8 0 amappl1 80 11454 0 10841 17 0 17 17 0 8 3 amappl 88 3145 0 2975 4 0 4 4 0 92 0 uvmvnodes 80 101 0 0 3 0 3 3 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 542 0 510 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 542 0 510 1 0 1 1 0 8 0 vmmpekpl 168 6660 0 6629 2 0 2 2 0 8 0 vmmpepl 168 44171 0 42201 99 1 98 99 0 357 11 vmsppl 488 541 0 510 5 0 5 5 0 8 1 rwobjpl 80 15619 0 14575 26 0 26 26 0 8 2 pdppl 4096 1091 0 1020 97 24 73 85 0 8 2 pvpl 32 11937 0 0 97 0 97 97 0 265 0 pmappl 256 541 0 510 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 273 0 27 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83976ff0) 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+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1274 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(30) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(30) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8345e755) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff8351d23d) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c47b4e0,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c47b4e0) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80003c47b690, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83976ff0) 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+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1274 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(30) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(30) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8345e755) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff8351d23d) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c47b4e0,98) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c47b4e0) at kerntrap+0x19d sys/arch/amd64/amd64/trap.c:528 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff800039fb87e8,fffff40060854db8,ffff80003c47b6a0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690 sys_futimens(ffff800039fb87e8,ffff80003c47b7f0,ffff80003c47b740) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2766 syscall(ffff80003c47b7f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c47b7f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x284eb7da910, count: -18 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: 0x7d4842cfbdf0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7d4842cfbdf0, count: -1