*cpu0: uvm_fault(0xfffffd806a8e6d40, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0xd0d8f05c220, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c435cb0 rbx 0 rdx 0 rcx 0xffff8000ffff22a0 rax 0x2a r8 0xffff80003c435be0 r9 0x1 r10 0x1b5c161e9aa69740 r11 0xabb8cc13242d6afb r12 0 r13 0 r14 0 r15 0 rip 0xffffffff825e54c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c435c30 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=514666 pid=89567 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff2ce0,0xffff80003c4427e8 process=0xffff80003bc08ea8 user=0xffff80003c430000, vmspace=0xfffffd806a8e6d40 estcpu=25, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17392 201155 36783 0 2 0 syz-executor 75719 367862 71006 0 2 0 syz-executor 89567 393285 63017 0 2 0 syz-executor 89567 335601 63017 0 3 0x4000080 fsleep syz-executor *89567 514666 63017 0 7 0x4000000 syz-executor 89567 119385 63017 0 7 0x4000000 syz-executor 89567 89984 63017 0 2 0x4000000 syz-executor 11864 319516 40706 0 2 0 syz-executor 11864 7968 40706 0 3 0x4000080 fsleep syz-executor 40794 44615 59490 0 2 0 syz-executor 40794 443714 59490 0 3 0x4000080 fsleep syz-executor 40794 181432 59490 0 3 0x4000080 fsleep syz-executor 40794 123485 59490 0 3 0x4000080 fsleep syz-executor 40794 473722 59490 0 3 0x4000080 fsleep syz-executor 56214 350799 29840 0 4 0x82000 syz-executor 56214 33533 29840 0 3 0x4002000 suspend syz-executor 56214 369223 29840 0 2 0x4082000 syz-executor 56214 70006 29840 0 4 0x4082000 syz-executor 2843 319247 39087 0 2 0 syz-executor 2843 144513 39087 0 3 0x4000080 fsleep syz-executor 2843 132170 39087 0 3 0x4000080 fsleep syz-executor 620 147485 87503 0 3 0x82 nanoslp syz-executor 71006 374735 87503 0 2 0xc82 syz-executor 29840 69901 87503 0 3 0x82 nanoslp syz-executor 59490 163685 87503 0 3 0x82 nanoslp syz-executor 39087 279523 87503 0 3 0x82 nanoslp syz-executor 36783 354758 87503 0 2 0xc82 syz-executor 40706 352912 87503 0 3 0x82 nanoslp syz-executor 63017 60477 87503 0 2 0xc82 syz-executor 87503 148421 74067 0 3 0x82 kqread syz-executor 74067 120707 60385 0 3 0x10008a sigsusp ksh 60385 259692 62918 0 3 0x98 kqread sshd-session 62918 96992 49093 0 3 0x92 kqread sshd-session 77037 100323 1 0 3 0x100083 ttyin getty 49093 419602 1 0 3 0x88 kqread sshd 30701 232367 1932 74 3 0x1100092 bpf pflogd 1932 480540 1 0 3 0x80 sbwait pflogd 83066 233450 72677 73 3 0x1100090 kqread syslogd 72677 172035 1 0 3 0x100082 sbwait syslogd 7445 165334 1 0 3 0x100080 kqread resolvd 81566 40375 62375 77 3 0x100092 kqread dhcpleased 65865 9408 62375 77 3 0x100092 kqread dhcpleased 62375 300352 1 0 3 0x80 kqread dhcpleased 14921 260686 0 0 3 0x14200 bored smr 64552 474172 0 0 2 0x14200 zerothread 14839 15791 0 0 3 0x14200 aiodoned aiodoned 7492 241471 0 0 3 0x14200 syncer update 44388 291253 0 0 3 0x14200 cleaner cleaner 61144 313325 0 0 3 0x14200 reaper reaper 66446 401202 0 0 3 0x14200 pgdaemon pagedaemon 38817 118822 0 0 3 0x14200 bored viomb 84003 472310 0 0 3 0x40014200 acpi0 acpi0 33400 151789 0 0 3 0x40014200 idle1 74578 434263 0 0 3 0x14200 bored softnet3 52326 216474 0 0 3 0x14200 bored softnet2 67249 234255 0 0 3 0x14200 bored softnet1 15543 367918 0 0 3 0x14200 bored softnet0 48428 482762 0 0 3 0x14200 bored systqmp 78214 484740 0 0 3 0x14200 bored systq 44729 248014 0 0 3 0x14200 tmoslp softclockmp 2908 445526 0 0 2 0x40014200 softclock 76616 428 0 0 3 0x40014200 idle0 1 350311 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 (0xfffffd806a32c910) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:295 #2 mtx_enter+0x62 sys/kern/kern_lock.c:252 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2770 #4 uvm_fault_lower+0x60a sys/uvm/uvm_fault.c:1542 #5 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 89567 (syz-executor) thread 0xffff8000ffff22a0 (514666) exclusive rwlock amaplk r = 0 (0xfffffd8066cd8a80) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 uvm_fault_check+0x5a9 sys/uvm/uvm_fault.c:862 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806a8e6e40) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x36e sys/kern/kern_rwlock.c:398 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1924 #3 uvm_fault_check+0x4a sys/uvm/uvm_fault.c:741 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806a32c910) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:295 #2 mtx_enter+0x62 sys/kern/kern_lock.c:252 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2770 #4 uvm_fault_lower+0x60a sys/uvm/uvm_fault.c:1542 #5 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 89567 (syz-executor) thread 0xffff80003c442f88 (119385) exclusive rwlock dtlk r = 0 (0xffffffff838ad298) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 dt_ioctl_record_stop+0x68 sys/dev/dt/dt_dev.c:-1 #3 dtioctl+0x536 sys/dev/dt/dt_dev.c:318 #4 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #5 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #6 sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 #7 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838d8e28) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 vn_ioctl+0x4d sys/kern/vfs_vnops.c:514 #2 sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #4 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 11300K 11554K 166960K 11383 0 pcb 17 12K 12K 166960K 32 0 rtable 236 6K 7K 166960K 361 0 pf 34 17K 18K 166960K 47 0 ifaddr 43 7K 7K 166960K 46 0 ifgroup 55 2K 2K 166960K 57 0 sysctl 3 1K 9K 166960K 8 0 counters 68 36K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 1486 0 iov 0 0K 2K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1347 85K 85K 166960K 1411 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 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 180 0 proc 73 103K 115K 166960K 536 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 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 2 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 37 175K 175K 166960K 37 0 exec 0 0K 1K 166960K 374 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 245 168K 178K 166960K 3285 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 104K 166960K 1298 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 12 0K 2K 166960K 29 0 temp 39 8687K 8751K 166960K 4203 0 kqueue 14 20K 24K 166960K 30 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 39 0 36 1 0 1 1 0 8 0 rtentry 176 113 0 2 6 0 6 6 0 8 0 unpcb 144 59 0 37 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 20 0 16 1 0 1 1 0 8 0 arp 128 18 0 0 1 0 1 1 0 8 0 inpcb 384 105 0 96 2 0 2 2 0 8 0 nd6 144 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 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 20 0 0 1 0 1 1 0 8 0 pfstkey 128 20 0 0 1 0 1 1 0 8 0 pfstate 384 20 0 0 2 0 2 2 0 8 0 pfrule 1344 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 256 468 0 0 30 0 30 30 0 8 0 art_table 32 469 0 0 4 0 4 4 0 8 0 art_node 16 111 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1649 0 133 96 0 96 96 0 8 0 ffsino 288 1649 0 133 109 0 109 109 0 8 0 nchpl 144 1888 0 199 63 0 63 63 0 8 0 uvmvnodes 80 1767 0 0 37 0 37 37 0 8 0 vnodes 216 1767 0 0 99 0 99 99 0 8 0 namei 1024 5796 0 5796 2 0 2 2 0 8 2 percpumem 16 50 0 1 1 0 1 1 0 8 0 kstatmem 264 28 0 2 2 0 2 2 0 8 0 scxspl 216 6100 0 6100 3 2 1 2 1 8 1 plimitpl 152 33 0 15 1 0 1 1 0 8 0 sigapl 424 490 0 440 7 0 7 7 0 8 1 knotepl 120 300 0 0 10 0 10 10 0 8 0 kqueuepl 224 35 0 25 1 0 1 1 0 8 0 pipepl 336 111 0 83 3 0 3 3 0 8 0 fdescpl 520 472 0 440 3 0 3 3 0 8 0 filepl 160 1670 0 1442 10 0 10 10 0 8 0 lockfpl 104 16 0 14 1 0 1 1 0 8 0 lockfspl 48 8 0 6 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 91 0 78 1 0 1 1 0 8 0 zombiepl 144 441 0 440 1 0 1 1 0 8 0 processpl 1240 490 0 440 5 0 5 5 0 8 0 procpl 656 578 0 514 6 0 6 6 0 8 0 sockpl 728 205 0 171 4 0 4 4 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 130 0 0 9 0 9 9 0 8 0 bufpl 280 2376 0 126 161 0 161 161 0 8 0 anonpl 32 7480 0 0 61 0 61 61 0 246 0 amapchunkpl 152 9027 0 8514 25 0 25 25 0 158 5 amappl16 200 987 0 723 16 1 15 15 0 8 1 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 129 0 117 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1127 0 1096 4 1 3 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 278 0 278 1 1 0 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 106 0 94 1 0 1 1 0 8 0 amappl6 120 203 0 199 1 0 1 1 0 8 0 amappl5 112 119 0 110 1 0 1 1 0 8 0 amappl4 104 321 0 300 1 0 1 1 0 8 0 amappl3 96 1559 0 1448 4 1 3 3 0 8 0 amappl2 88 639 0 581 2 0 2 2 0 8 0 amappl1 80 8534 0 7928 15 0 15 15 0 8 1 amappl 88 2580 0 2409 4 0 4 4 0 92 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 24 472 0 440 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 472 0 440 1 0 1 1 0 8 0 vmmpekpl 168 5572 0 5534 2 0 2 2 0 8 0 vmmpepl 168 35897 0 33650 98 0 98 98 0 357 0 vmsppl 480 471 0 440 5 0 5 5 0 8 1 rwobjpl 72 13767 0 10830 54 0 54 54 0 8 0 pdppl 4096 951 0 880 101 30 71 85 0 8 0 pvpl 32 13866 0 0 112 0 112 112 0 265 0 pmappl 256 471 0 440 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 383 0 32 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83837ff0) 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+0x15 sys/arch/amd64/amd64/bus_space.c:665 acpitimer_delay(1) at acpitimer_delay+0xb7 acpitimer_read sys/dev/acpi/acpitimer.c:146 [inline] acpitimer_delay(1) at acpitimer_delay+0xb7 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x524 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x524 sys/ddb/db_output.c:153 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8340b818) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833ab38c) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80003c467780,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80003c467780) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80003c467860, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83837ff0) 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+0x15 sys/arch/amd64/amd64/bus_space.c:665 acpitimer_delay(1) at acpitimer_delay+0xb7 acpitimer_read sys/dev/acpi/acpitimer.c:146 [inline] acpitimer_delay(1) at acpitimer_delay+0xb7 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(2d) at db_putchar+0x524 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(2d) at db_putchar+0x524 sys/ddb/db_output.c:153 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8340b818) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833ab38c) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80003c467780,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80003c467780) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000148c000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtioctl(11e5f,80044403,ffff80003c467ac0,3,ffff80003c442f88) at dtioctl+0x536 sys/dev/dt/dt_dev.c:318 VOP_IOCTL(fffffd8064d00ce0,80044403,ffff80003c467ac0,3,fffffd80097fb410,ffff80003c442f88) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8064cfccc8,80044403,ffff80003c467ac0,ffff80003c442f88) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80003c442f88,ffff80003c467ca0,ffff80003c467bf0) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80003c467ca0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c467ca0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd0d82d61670, count: -21 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: 0xd0d8f05c220, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0xd0d8f05c220, count: -1