panic: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 321656 5070 32767 0x10 0x4000000 1 syz-executor.0 * 6957 5070 32767 0x10 0x4000000 0K syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258d61f) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82600a3b,ffffffff8255930e,66b,ffffffff8256825b) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd806ca1b2f0,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd806ca1b2f0,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff80002e3787e0,ffff80002c94cc48,ffff80002c94cca0) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002c94cd10) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c94cd10) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf37cda7b4c0, count: 7 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "next != NULL && next->start <= entry->end" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_fault.c", line 1643 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258d61f) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82600a3b,ffffffff8255930e,66b,ffffffff8256825b) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd806ca1b2f0,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd806ca1b2f0,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff80002e3787e0,ffff80002c94cc48,ffff80002c94cca0) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002c94cd10) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c94cd10) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf37cda7b4c0, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002c94c9d0 rbx 0xffffffff8293bbff cpu_info_full_primary+0x2bff rdx 0 rcx 0 rax 0xffff80002e3787e0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xdbe1c0a0a35dd4ef r11 0x9a15d25067249027 r12 0xffffffff8293ba00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81376f38 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002c94c9c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=6957 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff07f0,0xffff80002e378010 process=0xffff8000fffee580 user=0xffff80002c947000, vmspace=0xfffffd806ca1b2f0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 34785 459273 11271 32767 2 0x10 syz-executor.1 73086 367785 269 32767 2 0x10 syz-executor.6 73086 388683 269 32767 2 0x4000010 syz-executor.6 20820 318878 55709 32767 2 0x10 syz-executor.3 20820 77103 55709 32767 2 0x4000010 syz-executor.3 20820 408894 55709 32767 2 0x4000010 syz-executor.3 20820 86965 55709 32767 3 0x4000090 fsleep syz-executor.3 28609 391318 8163 32767 2 0x10 syz-executor.7 5070 343675 27156 32767 2 0x10 syz-executor.0 5070 321656 27156 32767 7 0x4000010 syz-executor.0 5070 53901 27156 32767 3 0x4000090 fsleep syz-executor.0 * 5070 6957 27156 32767 7 0x4000010 syz-executor.0 52928 483433 66368 32767 2 0x10 syz-executor.5 52928 236556 66368 32767 2 0x4000010 syz-executor.5 6251 72862 15520 32767 2 0x10 syz-executor.2 6251 137001 15520 32767 3 0x4000090 fsleep syz-executor.2 27156 262108 79683 32767 3 0x90 nanoslp syz-executor.0 79683 132497 6327 0 3 0x82 wait syz-executor.0 269 332050 28643 32767 2 0x490 syz-executor.6 28643 481151 6327 0 3 0x82 wait syz-executor.6 8163 127596 91927 32767 2 0x490 syz-executor.7 91927 486389 6327 0 3 0x82 wait syz-executor.7 96261 416905 0 0 3 0x14200 bored sosplice 66368 453781 95743 32767 2 0x10 syz-executor.5 50555 397934 14744 32767 2 0x10 syz-executor.4 95743 425858 6327 0 3 0x82 wait syz-executor.5 55709 491017 48826 32767 2 0x10 syz-executor.3 14744 413418 6327 0 3 0x82 wait syz-executor.4 48826 100199 6327 0 3 0x82 wait syz-executor.3 15520 19847 59872 32767 2 0x490 syz-executor.2 11271 464078 53400 32767 2 0x10 syz-executor.1 59872 126779 6327 0 3 0x82 wait syz-executor.2 53400 150889 6327 0 3 0x82 wait syz-executor.1 6327 468022 89706 0 3 0x82 thrsleep syz-fuzzer 6327 173016 89706 0 3 0x4000082 thrsleep syz-fuzzer 6327 464660 89706 0 3 0x4000082 thrsleep syz-fuzzer 6327 159328 89706 0 3 0x4000082 thrsleep syz-fuzzer 6327 55 89706 0 3 0x4000082 thrsleep syz-fuzzer 6327 347130 89706 0 3 0x4000082 thrsleep syz-fuzzer 6327 418952 89706 0 3 0x4000082 thrsleep syz-fuzzer 6327 97524 89706 0 3 0x4000082 kqread syz-fuzzer 6327 395157 89706 0 3 0x4000082 thrsleep syz-fuzzer 89706 128495 30620 0 3 0x10008a sigsusp ksh 30620 235046 66299 0 3 0x9a kqread sshd 13335 489710 1 0 3 0x100083 ttyin getty 66299 315582 1 0 3 0x88 kqread sshd 96076 325759 66414 73 3 0x1100090 kqread syslogd 66414 379050 1 0 3 0x100082 netio syslogd 34591 415232 1 0 3 0x100080 kqread resolvd 58193 430311 57329 77 3 0x100092 kqread dhcpleased 75998 492397 57329 77 3 0x100092 kqread dhcpleased 57329 500242 1 0 3 0x80 kqread dhcpleased 20275 71688 0 0 3 0x14200 bored smr 65157 82674 0 0 2 0x14200 zerothread 89068 301478 0 0 3 0x14200 aiodoned aiodoned 70793 18074 0 0 3 0x14200 syncer update 23411 237514 0 0 3 0x14200 cleaner cleaner 55069 26315 0 0 3 0x14200 reaper reaper 64328 384201 0 0 3 0x14200 pgdaemon pagedaemon 10403 1615 0 0 3 0x14200 bored viomb 87823 370223 0 0 3 0x40014200 acpi0 acpi0 50098 296266 0 0 3 0x40014200 idle1 21722 345415 0 0 3 0x14200 bored softnet 60035 330012 0 0 3 0x14200 bored systqmp 65764 495845 0 0 3 0x14200 bored systq 62114 223465 0 0 2 0x40014200 softclock 63084 138332 0 0 3 0x40014200 idle0 1 220657 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 5070 (syz-executor.0) thread 0xffff8000ffff1270 (321656) exclusive rwlock futex r = 0 (0xffffffff82914140) #0 witness_lock+0x44d #1 sys_futex+0x5c sys/kern/sys_futex.c:108 #2 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #2 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #3 Xsyscall+0x128 Process 5070 (syz-executor.0) thread 0xffff80002e3787e0 (6957) exclusive rwlock amaplk r = 0 (0xfffffd8065165a20) #0 witness_lock+0x44d #1 uvm_map_lock_entry+0x36 sys/uvm/uvm_map.c:508 #2 uvm_fault_unwire_locked+0x1e8 sys/uvm/uvm_fault.c:1655 #3 uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 #4 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 #5 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #6 Xsyscall+0x128 shared rwlock vmmaplk r = 0 (0xfffffd806ca1b308) #0 witness_lock+0x44d #1 uvm_fault_unwire+0x31 sys/uvm/uvm_fault.c:1600 #2 sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 #3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82af8788) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x198 sys/kern/kern_synch.c:437 #4 rw_enter+0x35a sys/kern/kern_rwlock.c:286 #5 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458 #6 uvmfault_lookup+0xb9 sys/uvm/uvm_fault.c:1752 #7 uvm_fault_check+0x603 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #7 uvm_fault_check+0x603 sys/uvm/uvm_fault.c:712 #8 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #9 uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1580 #10 sys_sysctl+0x2d8 sys/kern/kern_sysctl.c:240 #11 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #11 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #12 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff8299d000) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:233 #3 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #4 Xsyscall+0x128 Process 50555 (syz-executor.4) thread 0xffff8000ffff2548 (397934) exclusive rrwlock inode r = 0 (0xfffffd805e065b38) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:678 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8067bd3c50) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 6411K 6419K 78643K 11312 0 pcb 13 12K 14K 78643K 17 0 rtable 258 7K 8K 78643K 1186 0 ifaddr 81 17K 17K 78643K 118 0 counters 56 35K 35K 78643K 66 0 ioctlops 0 0K 2K 78643K 169 0 iov 0 0K 32K 78643K 5231 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1271 79K 79K 78643K 2242 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 61 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1180 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 25 93K 117K 78643K 5207 0 sigio 0 0K 0K 78643K 175 0 proc 56 74K 123K 78643K 989 0 subproc 104 6K 6K 78643K 169 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 366 0 in_multi 99 6K 6K 78643K 214 0 ether_multi 1 0K 0K 78643K 19 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 1613 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 407 94K 108K 78643K 68744 0 UVM aobj 131 8K 8K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 135 0 NDP 11 0K 2K 78643K 42 0 temp 125 4711K 4794K 78643K 16911 0 kqueue 12 18K 26K 78643K 429 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 608 0 605 7 6 1 5 0 8 0 rtentry 112 182 0 62 4 0 4 4 0 8 0 unpcb 136 13005 0 12992 51 47 4 10 0 8 3 syncache 296 54 0 54 13 12 1 1 0 8 1 tcpqe 32 76 0 76 10 9 1 1 0 8 1 tcpcb 736 2208 0 2197 61 56 5 15 0 8 3 arp 120 29 0 11 1 0 1 1 0 8 0 ipq 40 35 0 35 1 1 0 1 0 8 0 ipqe 40 70 0 70 1 1 0 1 0 8 0 inpcb 312 4333 0 4325 61 55 6 12 0 8 5 rttmr 72 11 0 8 1 0 1 1 0 8 0 ip6q 72 5 0 4 2 1 1 1 0 8 0 ip6af 40 6 0 6 2 2 0 1 0 8 0 nd6 48 51 0 20 1 0 1 1 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 789 0 238 36 1 35 35 0 8 0 art_table 32 790 0 238 5 0 5 5 0 8 0 art_node 16 181 0 71 1 0 1 1 0 8 0 semapl 112 1178 0 1168 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8282 0 6841 91 0 91 91 0 8 0 ffsino 272 8282 0 6841 97 0 97 97 0 8 0 nchpl 144 15309 0 13684 62 0 62 62 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 57088 0 57088 2 1 1 2 0 8 1 percpumem 16 45 0 5 1 0 1 1 0 8 0 scxspl 216 42876 0 42876 19 18 1 8 0 8 1 plimitpl 152 1362 0 1340 7 5 2 2 0 8 1 sigapl 424 5482 0 5431 7 0 7 7 0 8 0 futexpl 64 48867 0 48863 1 0 1 1 0 8 0 knotepl 120 450 0 0 12 1 11 11 0 8 0 kqueuepl 216 1861 0 1853 26 21 5 5 0 8 4 pipepl 336 1682 0 1654 37 26 11 13 0 8 8 fdescpl 496 5467 0 5431 6 1 5 6 0 8 0 filepl 152 49338 0 49100 74 56 18 23 0 8 8 lockfpl 104 781 0 779 1 0 1 1 0 8 0 lockfspl 48 185 0 183 1 0 1 1 0 8 0 sessionpl 144 28 0 12 1 0 1 1 0 8 0 pgrppl 48 74 0 58 1 0 1 1 0 8 0 ucredpl 96 6097 0 6079 1 0 1 1 0 8 0 zombiepl 144 5431 0 5431 1 0 1 1 0 8 1 processpl 1064 5482 0 5431 4 0 4 4 0 8 0 procpl 672 15694 0 15626 13 6 7 8 0 8 0 sosppl 168 82 0 82 11 10 1 1 0 8 1 sockpl 480 18042 0 18018 385 372 13 37 0 8 9 mcl64k 65536 28 0 0 3 1 2 3 0 8 0 mcl16k 16384 33 0 0 5 2 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 265 0 0 20 0 20 20 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 4919 0 0 303 0 303 303 0 8 0 bufpl 288 11980 0 5645 453 0 453 453 0 8 0 anonpl 24 1504764 0 1489991 165 69 96 117 0 186 0 amapchunkpl 152 167474 0 166631 74 37 37 48 0 158 3 amappl16 200 14139 0 13773 63 42 21 32 0 8 0 amappl15 192 338 0 330 1 0 1 1 0 8 0 amappl14 184 10 0 7 1 0 1 1 0 8 0 amappl13 176 761 0 759 1 0 1 1 0 8 0 amappl12 168 1762 0 1755 1 0 1 1 0 8 0 amappl11 160 1626 0 1610 1 0 1 1 0 8 0 amappl10 152 56 0 50 1 0 1 1 0 8 0 amappl9 144 475 0 471 1 0 1 1 0 8 0 amappl8 136 1754 0 1635 5 0 5 5 0 8 0 amappl7 128 976 0 959 1 0 1 1 0 8 0 amappl6 120 216 0 194 2 1 1 2 0 8 0 amappl5 112 4473 0 4453 1 0 1 1 0 8 0 amappl4 104 3195 0 3153 2 0 2 2 0 8 0 amappl3 96 2342 0 2328 1 0 1 1 0 8 0 amappl2 88 2017 0 1972 3 1 2 3 0 8 0 amappl1 80 102100 0 101453 20 5 15 18 0 8 0 amappl 88 67963 0 67684 9 1 8 8 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 5467 0 5431 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5467 0 5431 1 0 1 1 0 8 0 vmmpekpl 168 46961 0 46918 3 0 3 3 0 8 0 vmmpepl 168 502994 0 500244 169 42 127 134 0 357 3 vmsppl 368 5466 0 5431 4 0 4 4 0 8 0 rwobjpl 56 128631 0 121191 106 0 106 106 0 8 0 pdppl 4096 10941 0 10862 205 124 81 91 0 8 2 pvpl 32 2549613 0 2529631 325 153 172 240 0 265 4 pmappl 248 5466 0 5431 3 0 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1392 0 269 33 0 33 33 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8258d61f) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82600a3b,ffffffff8255930e,66b,ffffffff8256825b) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_fault_unwire_locked(fffffd806ca1b2f0,20000000,20011000) at uvm_fault_unwire_locked+0x2eb sys/uvm/uvm_fault.c:1640 uvm_fault_unwire(fffffd806ca1b2f0,20000000,20011000) at uvm_fault_unwire+0x3f sys/uvm/uvm_fault.c:1601 sys_sysctl(ffff80002e3787e0,ffff80002c94cc48,ffff80002c94cca0) at sys_sysctl+0x229 sys/kern/kern_sysctl.c:254 syscall(ffff80002c94cd10) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002c94cd10) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf37cda7b4c0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 kd_curproc sys/dev/kcov.c:577 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 sys/dev/kcov.c:148 __mp_lock(ffffffff82af8580) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82af8580) at __mp_lock+0x133 sys/kern/kern_lock.c:147 sleep_setup(ffff80002e394e40,ffff8000ffff1270,120,ffffffff82580757,0) at sleep_setup+0xd3 sys/kern/kern_synch.c:374 rwsleep(ffff8000ffff1270,ffffffff82914130,120,ffffffff82580757,0) at rwsleep+0xc0 sys/kern/kern_synch.c:315 futex_wait(f3772732330,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000ffff1270,ffff80002e394fd0,ffff80002e395030) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff80002e3950a0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3950a0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf382ce09060, count: 4 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 kd_curproc sys/dev/kcov.c:577 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 sys/dev/kcov.c:148 __mp_lock(ffffffff82af8580) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82af8580) at __mp_lock+0x133 sys/kern/kern_lock.c:147 sleep_setup(ffff80002e394e40,ffff8000ffff1270,120,ffffffff82580757,0) at sleep_setup+0xd3 sys/kern/kern_synch.c:374 rwsleep(ffff8000ffff1270,ffffffff82914130,120,ffffffff82580757,0) at rwsleep+0xc0 sys/kern/kern_synch.c:315 futex_wait(f3772732330,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000ffff1270,ffff80002e394fd0,ffff80002e395030) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff80002e3950a0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e3950a0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf382ce09060, count: -11