uvm_fault(0xfffff0006d0ceba0, 0x7fff0000800f, 0, 1) -> e kernel: page fault trap, code=0 Stopped at amap_lookups+0x1e0: movl 0x10(%r15),%r14d TID PID UID PRFLAGS PFLAGS CPU COMMAND *222816 50072 32767 0x10 0 1 syz-executor 62729 77541 0 0x2 0 0 syz-executor amap_lookups(fffff0006d1c7768,f000,ffff80003c3e8980,8) at amap_lookups+0x1e0 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_lookups(fffff0006d1c7768,f000,ffff80003c3e8980,8) at amap_lookups+0x1e0 sys/uvm/uvm_amap.c:1168 uvm_fault_check(ffff80003c3e8a80,ffff80003c3e8ab8,ffff80003c3e8af0,0) at uvm_fault_check+0x8d2 sys/uvm/uvm_fault.c:840 uvm_fault(fffff0006d0ceba0,5c7dfb4f000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff80003c3e8c20,5c7dfb4fb50) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c3e8c20) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x70b4368d11b0, count: 9 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffff0006d0ceba0, 0x7fff0000800f, 0, 1) -> e ddb{1}> show kasan No such command ddb{1}> trace amap_lookups(fffff0006d1c7768,f000,ffff80003c3e8980,8) at amap_lookups+0x1e0 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_lookups(fffff0006d1c7768,f000,ffff80003c3e8980,8) at amap_lookups+0x1e0 sys/uvm/uvm_amap.c:1168 uvm_fault_check(ffff80003c3e8a80,ffff80003c3e8ab8,ffff80003c3e8af0,0) at uvm_fault_check+0x8d2 sys/uvm/uvm_fault.c:840 uvm_fault(fffff0006d0ceba0,5c7dfb4f000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff80003c3e8c20,5c7dfb4fb50) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c3e8c20) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x70b4368d11b0, count: -6 ddb{1}> show registers rdi 0x11 rsi 0x20 rbp 0xffff80003c3e88d0 rbx 0x1 rdx 0 rcx 0x1 rax 0xffff800000c43640 r8 0xffffffff814e39c0 uvm_map_inentry_sp r9 0 r10 0xcf2174c8fbb8456d r11 0x94d8338441e5c14b r12 0x17 r13 0 r14 0x20 r15 0x7fff00007fff rip 0xffffffff8238ed70 amap_lookups+0x1e0 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80003c3e8840 ss 0 amap_lookups+0x1e0: movl 0x10(%r15),%r14d ddb{1}> show proc PROC (syz-executor) tid=222816 pid=50072 tcnt=3 stat=onproc flags process=10 proc=0 runpri=53, usrpri=53, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c3f67f8,0xffff80002a222fb0 process=0xffff800045fe3510 user=0xffff80003c3e3000, vmspace=0xfffff0006d0ceba0 estcpu=3, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *50072 222816 91841 32767 7 0x10 0 syz-executor 50072 220998 91841 32767 2 0x10 0x4000000 syz-executor 50072 17981 91841 32767 2 0x10 0x4000000 syz-executor 77541 62729 57823 0 7 0x2 0 syz-executor 34316 109604 87204 32767 3 0x10 0x80 nanoslp syz-executor 34316 359473 87204 32767 3 0x10 0x4000080 sbwait syz-executor 34316 206676 87204 32767 3 0x10 0x4000080 fsleep syz-executor 38855 160176 41866 32767 3 0x10 0x80 nanoslp syz-executor 91841 39374 22530 32767 3 0x10 0x80 nanoslp syz-executor 89545 200554 10058 32767 2 0x10 0 syz-executor 23321 392213 16806 32767 2 0x10 0 syz-executor 34825 3459 49307 32767 3 0x10 0x80 nanoslp syz-executor 87204 124573 41558 32767 3 0x10 0x80 nanoslp syz-executor 41866 199216 57823 0 3 0x2 0x80 wait syz-executor 53930 448746 57823 0 3 0x2 0x80 wait syz-executor 10058 469460 57823 0 3 0x2 0x80 wait syz-executor 22530 10305 57823 0 3 0x2 0x80 wait syz-executor 16806 212325 57823 0 3 0x2 0x80 wait syz-executor 41558 477058 57823 0 3 0x2 0x80 wait syz-executor 49307 355038 57823 0 3 0x2 0x80 wait syz-executor 57823 344251 9827 0 2 0x2 0 syz-executor 9827 130493 20589 0 3 0x100002 0x88 sigsusp ksh 20589 195796 13168 0 3 0x10 0x88 kqread sshd-session 13168 275202 57984 0 3 0x12 0x80 kqread sshd-session 22698 78370 1 0 3 0x100003 0x80 ttyin getty 57984 445015 1 0 3 0 0x88 kqread sshd 94717 421334 42745 73 3 0x1100010 0x80 kqread syslogd 42745 108671 1 0 3 0x100002 0x80 sbwait syslogd 77461 153843 1 0 3 0x100000 0x80 kqread resolvd 41369 235583 20689 77 3 0x100012 0x80 kqread dhcpleased 53315 78378 20689 77 3 0x100012 0x80 kqread dhcpleased 20689 492453 1 0 3 0 0x80 kqread dhcpleased 44856 421462 0 0 3 0x14000 0x200 bored smr 91085 281389 0 0 2 0x14000 0x200 zerothread 21793 297100 0 0 3 0x14000 0x200 aiodoned aiodoned 81942 352125 0 0 3 0x14000 0x200 syncer update 45658 23378 0 0 3 0x14000 0x200 cleaner cleaner 36153 498055 0 0 2 0x14000 0x200 reaper 52015 163560 0 0 3 0x14000 0x200 pgdaemon pagedaemon 37610 364915 0 0 3 0x14000 0x200 bored viomb 8422 447717 0 0 3 0x14000 0x40000200 acpi0 acpi0 83323 379794 0 0 3 0x14000 0x40000200 idle1 55116 24105 0 0 3 0x14000 0x200 bored softnet1 18678 488797 0 0 3 0x14000 0x200 bored softnet0 37607 258977 0 0 3 0x14000 0x200 bored systqmp 83201 310819 0 0 3 0x14000 0x200 bored systq 92154 33348 0 0 3 0x14000 0x200 tmoslp softclockmp 778 461196 0 0 3 0x14000 0x40000200 tmoslp softclock 64406 300461 0 0 3 0x14000 0x40000200 idle0 1 69159 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff839ddfd0) #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 wakeup_n+0x54 sys/kern/kern_synch.c:581 #3 sd_buf_done+0x2d2 sys/scsi/sd.c:770 #4 scsi_done+0x40 sys/scsi/scsi_base.c:1496 #5 vioscsi_vq_done+0xe1 sys/dev/pv/vioscsi.c:-1 #6 intr_handler+0x125 sys/arch/amd64/amd64/intr.c:564 #7 Xintr_ioapic_edge23_untramp+0x18f #8 Xspllower+0x1d #9 pool_put+0x2de sys/kern/subr_pool.c:818 #10 uvm_map_teardown+0x2c4 sys/uvm/uvm_map.c:2530 #11 exit1+0x71b sys/kern/kern_exit.c:260 #12 sys_exit+0x1a sys/kern/kern_exit.c:-1 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 Process 50072 (syz-executor) thread 0xffff80003c3f7cb8 (222816) shared rwlock amaplk r = 0 (0xfffff0007b973940) #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 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 (0xfffff0006d0ceca0) #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 Process 89545 (syz-executor) thread 0xffff800045fef4d8 (200554) exclusive rrwlock inode r = 0 (0xfffff0006d0f1690) #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 (0xfffff0006dc53c40) #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 Process 23321 (syz-executor) thread 0xffff800045fee018 (392213) exclusive rrwlock inode r = 0 (0xfffff0006d0f1b30) #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 vget+0x2a2 sys/kern/vfs_subr.c:692 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580 #11 namei+0x7c5 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffff0006dc53550) #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807 #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11055 12017K 12034K 166960K 12149 0 pcb 17 12K 12K 166960K 17 0 rtable 221 6K 7K 166960K 360 0 pf 29 16K 16K 166960K 31 0 ifaddr 38 6K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 37K 166960K 70 0 ioctlops 0 0K 4K 166960K 44 0 iov 0 0K 12K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1287 81K 81K 166960K 1514 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 15 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 20 73K 121K 166960K 331 0 sigio 0 0K 0K 166960K 4 0 proc 58 99K 163K 166960K 526 0 subproc 72 4K 4K 166960K 126 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 28 0 in_multi 88 6K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 405 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 212 158K 168K 166960K 4469 0 UVM aobj 13 2K 2K 166960K 14 0 pinsyscall 41 82K 110K 166960K 1401 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 13 0 NDP 10 0K 2K 166960K 27 0 temp 40 9119K 9138K 166960K 4147 0 kqueue 13 20K 26K 166960K 50 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 49 0 46 1 0 1 1 0 8 0 rtentry 176 114 0 12 6 0 6 6 0 8 0 unpcb 144 138 0 121 2 0 2 2 0 8 1 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 78 0 72 2 0 2 2 0 8 1 arp 136 18 0 2 1 0 1 1 0 8 0 ipq 40 4 0 0 1 0 1 1 0 8 0 ipqe 40 7 0 0 1 0 1 1 0 8 0 inpcb 328 258 0 246 4 0 4 4 0 8 2 nd6 152 27 0 3 2 0 2 2 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 471 0 44 30 0 30 30 0 8 1 art_table 40 472 0 44 5 0 5 5 0 8 0 art_node 32 114 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 13 0 3 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1920 0 448 93 0 93 93 0 8 0 ffsino 296 1920 0 448 114 0 114 114 0 8 0 nchpl 144 2344 0 646 64 0 64 64 0 8 0 vnodes 216 2055 0 0 115 0 115 115 0 8 0 namei 1024 7185 0 7184 2 0 2 2 0 8 1 percpumem 16 51 0 1 1 0 1 1 0 8 0 kstatmem 264 25 0 2 2 0 2 2 0 8 0 scxspl 216 7485 0 7485 3 2 1 2 1 8 1 plimitpl 152 74 0 51 2 0 2 2 0 8 1 sigapl 424 608 0 559 7 0 7 7 0 8 0 knotepl 120 312 0 0 10 0 10 10 0 8 0 kqueuepl 224 55 0 46 1 0 1 1 0 8 0 pipepl 344 154 0 127 3 0 3 3 0 8 0 fdescpl 528 592 0 560 3 0 3 3 0 8 0 filepl 160 2735 0 2526 13 0 13 13 0 8 3 lockfpl 104 60 0 58 1 0 1 1 0 8 0 lockfspl 48 23 0 21 1 0 1 1 0 8 0 sessionpl 144 39 0 23 1 0 1 1 0 8 0 pgrppl 48 55 0 31 1 0 1 1 0 8 0 ucredpl 104 644 0 626 1 0 1 1 0 8 0 zombiepl 144 562 0 559 1 0 1 1 0 8 0 processpl 1232 608 0 559 5 0 5 5 0 8 0 procpl 664 901 0 848 7 0 7 7 0 8 1 sosppl 176 5 0 4 1 0 1 1 0 8 0 sockpl 752 446 0 414 7 0 7 7 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 16 0 0 2 0 2 2 0 8 0 mextrefs 64 17 0 0 1 0 1 1 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 262 0 0 17 0 17 17 0 8 0 bufpl 272 2510 0 102 161 0 161 161 0 8 0 anonpl 32 7565 0 0 62 0 62 62 0 247 0 amapchunkpl 152 13230 0 12792 27 0 27 27 0 158 5 amappl16 200 2103 0 2084 14 4 10 14 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 407 0 406 1 0 1 1 0 8 0 amappl13 176 114 0 103 1 0 1 1 0 8 0 amappl12 168 834 0 803 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 57 0 47 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 1 0 1 0 8 0 amappl8 136 90 0 89 1 0 1 1 0 8 0 amappl7 128 141 0 130 1 0 1 1 0 8 0 amappl6 120 217 0 216 1 0 1 1 0 8 0 amappl5 112 95 0 86 1 0 1 1 0 8 0 amappl4 104 264 0 246 1 0 1 1 0 8 0 amappl3 96 2518 0 2414 5 1 4 4 0 8 0 amappl2 88 507 0 453 2 0 2 2 0 8 0 amappl1 80 10731 0 10179 14 0 14 14 0 8 1 amappl 88 3772 0 3623 5 0 5 5 0 92 0 uvmvnodes 80 104 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 13 0 1 1 0 1 1 0 8 0 uaddrrnd 24 592 0 560 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 592 0 560 1 0 1 1 0 8 0 vmmpekpl 168 6638 0 6601 3 0 3 3 0 8 0 vmmpepl 168 46278 0 44476 104 0 104 104 0 357 15 vmsppl 488 591 0 559 7 1 6 6 0 8 0 rwobjpl 80 16084 0 15163 26 0 26 26 0 8 5 pdppl 4096 1191 0 1118 105 24 81 95 0 8 8 pvpl 32 15491 0 0 125 0 125 125 0 265 0 pmappl 256 591 0 559 4 1 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 441 0 27 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8392eff0) 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 __mp_lock(ffffffff83a73980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a73980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83a73980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a73980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80003c3fde00) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003c3fde00) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x730837925a80, count: 5 ddb{0}> trace x86_ipi_db(ffffffff8392eff0) 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 __mp_lock(ffffffff83a73980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a73980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83a73980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a73980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80003c3fde00) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80003c3fde00) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x730837925a80, count: -10 ddb{0}> machine ddbcpu 1 Stopped at amap_lookups+0x1e0: movl 0x10(%r15),%r14d amap_lookups(fffff0006d1c7768,f000,ffff80003c3e8980,8) at amap_lookups+0x1e0 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_lookups(fffff0006d1c7768,f000,ffff80003c3e8980,8) at amap_lookups+0x1e0 sys/uvm/uvm_amap.c:1168 uvm_fault_check(ffff80003c3e8a80,ffff80003c3e8ab8,ffff80003c3e8af0,0) at uvm_fault_check+0x8d2 sys/uvm/uvm_fault.c:840 uvm_fault(fffff0006d0ceba0,5c7dfb4f000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff80003c3e8c20,5c7dfb4fb50) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c3e8c20) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x70b4368d11b0, count: 9 ddb{1}> trace amap_lookups(fffff0006d1c7768,f000,ffff80003c3e8980,8) at amap_lookups+0x1e0 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline] amap_lookups(fffff0006d1c7768,f000,ffff80003c3e8980,8) at amap_lookups+0x1e0 sys/uvm/uvm_amap.c:1168 uvm_fault_check(ffff80003c3e8a80,ffff80003c3e8ab8,ffff80003c3e8af0,0) at uvm_fault_check+0x8d2 sys/uvm/uvm_fault.c:840 uvm_fault(fffff0006d0ceba0,5c7dfb4f000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627 upageflttrap(ffff80003c3e8c20,5c7dfb4fb50) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c3e8c20) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x70b4368d11b0, count: -6