panic: free: size too small 52 <= 4096 / 2 (0xffff800001590000) type shm Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 360403 78869 0 0x2 0 0 syz-executor *115102 24611 0 0x14000 0x200 1K reaper db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8302015e) at panic+0x1e5 sys/kern/subr_prf.c:198 free(ffff800001590000,1d,34) at free+0x6f5 sys/kern/kern_malloc.c:418 shmexit(fffffd806b859008) at shmexit+0x154 sys/kern/sysv_shm.c:529 uvmspace_free(fffffd806b859008) at uvmspace_free+0x7e sys/uvm/uvm_map.c:3417 reaper(ffff800029fd8f38) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, 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: free: size too small 52 <= 4096 / 2 (0xffff800001590000) type shm ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8302015e) at panic+0x1e5 sys/kern/subr_prf.c:198 free(ffff800001590000,1d,34) at free+0x6f5 sys/kern/kern_malloc.c:418 shmexit(fffffd806b859008) at shmexit+0x154 sys/kern/sysv_shm.c:529 uvmspace_free(fffffd806b859008) at uvmspace_free+0x7e sys/uvm/uvm_map.c:3417 reaper(ffff800029fd8f38) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: -6 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800029fe55b0 rbx 0xffff800029b7cd87 rdx 0 rcx 0xffff800029fd8f38 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xfe57748f89f82497 r11 0xb11b9eb5aed0036b r12 0xffff800029b7cb88 r13 0 r14 0 r15 0x1 rip 0xffffffff81ae19d5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800029fe55a0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (reaper) tid=115102 pid=24611 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=85, usrpri=85, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800029fd96d0,0xffff800029fd8a38 process=0xffff800029febaf0 user=0xffff800029fe0000, vmspace=0xffffffff835c0650 estcpu=35, cpticks=8, pctcpu=21.30, user=0, sys=13611, intr=141 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75264 245214 84147 0 3 0x2 biowait syz-executor 43412 43300 84147 0 3 0x2 biowait syz-executor 19899 271392 84147 0 3 0x2 biowait syz-executor 20753 29046 84147 0 3 0x2 biowait syz-executor 78869 360403 84147 0 7 0x2 syz-executor 10349 73960 84147 0 3 0x82 wait syz-executor 76472 302495 84147 0 3 0x82 wait syz-executor 3712 223614 1 0 3 0x100083 ttyin getty 33982 329874 0 0 3 0x14280 nfsidl nfsio 58788 319697 0 0 3 0x14280 nfsidl nfsio 94585 259149 0 0 3 0x14280 nfsidl nfsio 75890 177207 0 0 3 0x14280 nfsidl nfsio 41884 464919 0 0 3 0x14280 nfsidl nfsio 4817 216908 0 0 3 0x14280 nfsidl nfsio 27383 17112 0 0 3 0x14280 nfsidl nfsio 58866 79471 0 0 3 0x14280 nfsidl nfsio 93008 52484 0 0 3 0x14280 nfsidl nfsio 57995 26306 0 0 3 0x14280 nfsidl nfsio 24932 181093 0 0 3 0x14280 nfsidl nfsio 42231 164022 0 0 3 0x14280 nfsidl nfsio 61038 88338 0 0 3 0x14280 nfsidl nfsio 26131 276990 0 0 3 0x14280 nfsidl nfsio 47528 208726 0 0 3 0x14280 nfsidl nfsio 36741 22265 0 0 3 0x14280 nfsidl nfsio 46086 60841 0 0 3 0x14280 nfsidl nfsio 59593 487373 0 0 3 0x14280 nfsidl nfsio 30963 23988 0 0 3 0x14280 nfsidl nfsio 82268 268895 0 0 3 0x14280 nfsidl nfsio 58671 162049 0 0 3 0x14200 bored sosplice 84147 146679 59000 0 3 0x82 wait syz-executor 59000 226191 96347 0 3 0x10008a sigsusp ksh 96347 82031 81111 0 3 0x98 kqread sshd-session 81111 229234 59221 0 3 0x92 kqread sshd-session 59221 266687 1 0 3 0x88 kqread sshd 20029 47792 54333 74 3 0x1100092 bpf pflogd 54333 187574 1 0 3 0x80 sbwait pflogd 53576 66245 88192 73 3 0x1100010 biowait syslogd 88192 331396 1 0 3 0x100082 sbwait syslogd 40223 235565 1 0 3 0x100080 kqread resolvd 38678 453467 48306 77 3 0x100092 kqread dhcpleased 26859 326121 48306 77 3 0x100092 kqread dhcpleased 48306 259226 1 0 3 0x80 kqread dhcpleased 91630 167434 0 0 3 0x14200 bored smr 20634 294434 0 0 3 0x14200 pgzero zerothread 24901 376643 0 0 3 0x14200 aiodoned aiodoned 66835 18309 0 0 3 0x14200 syncer update 83255 260183 0 0 3 0x14200 cleaner cleaner *24611 115102 0 0 7 0x14200 reaper 11494 502485 0 0 3 0x14200 pgdaemon pagedaemon 12026 520068 0 0 3 0x14200 bored viomb 68863 169643 0 0 3 0x40014200 acpi0 acpi0 35888 430793 0 0 3 0x40014200 idle1 97930 515614 0 0 3 0x14200 bored softnet3 13742 281829 0 0 3 0x14200 bored softnet2 43620 82936 0 0 3 0x14200 bored softnet1 12287 306930 0 0 3 0x14200 bored softnet0 42028 437656 0 0 3 0x14200 bored systqmp 52210 167350 0 0 3 0x14200 bored systq 94004 13193 0 0 3 0x14200 tmoslp softclockmp 22955 275177 0 0 3 0x40014200 tmoslp softclock 26396 276749 0 0 3 0x40014200 idle0 1 103500 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:91 r = 0 (0xffffffff834ef458) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 free+0x9f sys/kern/kern_malloc.c:385 #4 shmexit+0x154 sys/kern/sysv_shm.c:529 #5 uvmspace_free+0x7e sys/uvm/uvm_map.c:3417 #6 reaper+0x246 sys/kern/kern_exit.c:480 #7 proc_trampoline+0x10 Process 75264 (syz-executor) thread 0xffff800035db3988 (245214) exclusive rrwlock inode r = 0 (0xfffffd806434bc48) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8079915c58) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 43412 (syz-executor) thread 0xffff800035db2ce0 (43300) exclusive rrwlock inode r = 0 (0xfffffd806434b5e8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8079915f88) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 19899 (syz-executor) thread 0xffff80002a115c08 (271392) exclusive rrwlock inode r = 0 (0xfffffd806434b098) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3099 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8063ae5708) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3084 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 20753 (syz-executor) thread 0xffff8000ffffc520 (29046) exclusive rrwlock inode r = 0 (0xfffffd806434be68) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806434b2b8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x218 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 Process 53576 (syslogd) thread 0xffff8000ffffd450 (66245) exclusive rrwlock inode r = 0 (0xfffffd806e1575f0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 24611 (reaper) thread 0xffff800029fd8f38 (115102) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83559e08) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvmspace_free+0x6d sys/uvm/uvm_map.c:3416 #2 reaper+0x246 sys/kern/kern_exit.c:480 #3 proc_trampoline+0x10 exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:91 r = 0 (0xffffffff834ef458) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 free+0x9f sys/kern/kern_malloc.c:385 #4 shmexit+0x154 sys/kern/sysv_shm.c:529 #5 uvmspace_free+0x7e sys/uvm/uvm_map.c:3417 #6 reaper+0x246 sys/kern/kern_exit.c:480 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10227 14189K 14460K 166960K 13447 0 pcb 17 14K 16K 166960K 220 0 rtable 232 8K 8K 166960K 2022 0 pf 34 17K 19K 166960K 228 0 ifaddr 42 8K 8K 166960K 295 0 ifgroup 55 2K 2K 166960K 342 0 sysctl 3 1K 1K 166960K 5 0 counters 64 36K 36K 166960K 238 0 ioctlops 0 0K 8K 166960K 1672 0 iov 0 0K 24K 166960K 80 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1440 90K 91K 166960K 2948 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 20K 20K 166960K 23 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 129 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 10 33K 89K 166960K 2060 0 sigio 0 0K 0K 166960K 26 0 proc 72 91K 128K 166960K 2083 0 subproc 104 6K 7K 166960K 767 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 434 0 in_multi 96 7K 7K 166960K 695 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 1332 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 206 72K 93K 166960K 18265 0 UVM aobj 99 3K 3K 166960K 103 0 pinsyscall 35 70K 102K 166960K 4487 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 51 0 NDP 12 0K 2K 166960K 220 0 temp 75 6824K 6900K 166960K 98247 0 kqueue 13 20K 28K 166960K 214 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 329 0 326 2 1 1 2 0 8 0 rtentry 112 716 0 610 5 1 4 4 0 8 0 unpcb 144 880 0 863 10 9 1 4 0 8 0 syncache 336 10 0 10 4 4 0 1 0 8 0 tcpqe 32 6 0 6 2 2 0 1 0 8 0 tcpcb 808 367 0 363 10 9 1 4 0 8 0 arp 120 127 0 107 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 336 1804 0 1793 28 25 3 13 0 8 0 nd6 136 194 0 166 1 0 1 1 0 8 0 pkpcb 40 7 0 7 3 3 0 1 0 8 0 kcovpl 48 59 0 51 1 0 1 1 0 8 0 ppxss 1168 33 0 33 3 3 0 1 0 8 0 pffrag 232 7 0 5 2 1 1 1 0 482 0 pffrnode 88 7 0 5 2 1 1 1 0 8 0 pffrent 40 10 0 8 2 1 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 24 184 0 157 1 0 1 1 0 8 0 pfstkey 128 184 0 157 2 0 2 2 0 8 0 pfstate 376 184 0 157 6 1 5 5 0 8 0 pfrule 1344 28 0 21 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 2847 0 2410 37 9 28 31 0 8 0 art_table 32 2850 0 2410 4 0 4 4 0 8 0 art_node 16 712 0 619 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 125 0 115 1 0 1 1 0 8 0 shmpl 112 100 0 4 3 0 3 3 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3781 0 2173 102 0 102 102 0 8 0 ffsino 272 3781 0 2173 109 0 109 109 0 8 0 nchpl 144 5763 0 5097 65 39 26 65 0 8 0 uvmvnodes 80 5100 0 0 105 0 105 105 0 8 0 vnodes 216 5100 0 0 284 0 284 284 0 8 0 namei 1024 25105 0 25104 6 5 1 2 0 8 0 percpumem 16 133 0 87 1 0 1 1 0 8 0 kstatmem 264 198 0 174 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 41273 0 41268 13 12 1 8 1 8 0 plimitpl 152 339 0 322 1 0 1 1 0 8 0 sigapl 424 2285 0 2219 10 1 9 9 0 8 0 futexpl 64 18134 0 18134 5 4 1 1 0 8 1 knotepl 120 692 0 0 17 0 17 17 0 8 0 kqueuepl 216 353 0 344 1 0 1 1 0 8 0 pipepl 320 355 0 328 3 0 3 3 0 8 0 fdescpl 496 2245 0 2221 7 2 5 5 0 8 1 filepl 152 12335 0 12095 38 27 11 21 0 8 1 lockfpl 104 565 0 563 2 1 1 2 0 8 0 lockfspl 48 245 0 243 1 0 1 1 0 8 0 sessionpl 144 80 0 71 1 0 1 1 0 8 0 pgrppl 48 150 0 133 1 0 1 1 0 8 0 ucredpl 104 2133 0 2119 1 0 1 1 0 8 0 zombiepl 144 2689 0 2685 2 1 1 1 0 8 0 processpl 1160 2285 0 2219 7 1 6 6 0 8 0 procpl 648 4411 0 4334 8 0 8 8 0 8 0 srpgc 96 10 0 10 4 4 0 1 0 8 0 sosppl 168 15 0 15 5 5 0 1 0 8 0 sockpl 664 3034 0 3004 34 29 5 16 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 255 0 0 29 1 28 29 0 8 0 mtagpl 96 14 0 0 1 0 1 1 0 8 0 mbufpl 256 461 0 0 25 0 25 25 0 8 0 bufpl 280 11461 0 5310 456 4 452 456 0 8 0 anonpl 24 374642 0 371395 130 78 52 80 0 185 8 amapchunkpl 152 59168 0 58765 79 46 33 42 0 158 7 amappl16 200 7412 0 7391 46 44 2 27 0 8 0 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 233 0 221 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 3710 0 3683 3 1 2 2 0 8 0 amappl11 160 87 0 73 1 0 1 1 0 8 0 amappl10 152 22 0 22 1 1 0 1 0 8 0 amappl9 144 171 0 170 1 0 1 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 217 0 204 1 0 1 1 0 8 0 amappl6 120 700 0 699 1 0 1 1 0 8 0 amappl5 112 360 0 348 1 0 1 1 0 8 0 amappl4 104 488 0 469 1 0 1 1 0 8 0 amappl3 96 11544 0 11450 4 0 4 4 0 8 0 amappl2 88 1452 0 1383 2 0 2 2 0 8 0 amappl1 80 17349 0 16796 16 2 14 14 0 8 0 amappl 88 17364 0 17220 5 0 5 5 0 92 0 dma16384 16384 2 0 2 2 2 0 1 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 128 254 0 254 2 2 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 102 0 4 2 0 2 2 0 8 0 uaddrrnd 24 2245 0 2218 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2245 0 2218 1 0 1 1 0 8 0 vmmpekpl 168 19075 0 19012 4 0 4 4 0 8 0 vmmpepl 168 143870 0 142216 123 38 85 104 0 357 0 vmsppl 440 2244 0 2218 6 2 4 5 0 8 0 rwobjpl 56 47646 0 41547 88 1 87 87 0 8 0 pdppl 4096 4497 0 4436 185 114 71 83 0 8 10 pvpl 32 44425 0 0 358 0 358 358 0 265 0 pmappl 248 2244 0 2218 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 553 0 174 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83465ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83559c00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83559c00) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a1278f0,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83559c00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83559c00) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a127ac0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a127ac0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b241630a3c0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff83465ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83559c00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83559c00) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a1278f0,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83559c00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83559c00) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a127ac0) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a127ac0) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b241630a3c0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8302015e) at panic+0x1e5 sys/kern/subr_prf.c:198 free(ffff800001590000,1d,34) at free+0x6f5 sys/kern/kern_malloc.c:418 shmexit(fffffd806b859008) at shmexit+0x154 sys/kern/sysv_shm.c:529 uvmspace_free(fffffd806b859008) at uvmspace_free+0x7e sys/uvm/uvm_map.c:3417 reaper(ffff800029fd8f38) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: 9 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8302015e) at panic+0x1e5 sys/kern/subr_prf.c:198 free(ffff800001590000,1d,34) at free+0x6f5 sys/kern/kern_malloc.c:418 shmexit(fffffd806b859008) at shmexit+0x154 sys/kern/sysv_shm.c:529 uvmspace_free(fffffd806b859008) at uvmspace_free+0x7e sys/uvm/uvm_map.c:3417 reaper(ffff800029fd8f38) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: -6