panic: kernel diagnostic assertion "__mp_lock_held(&sched_lock, curcpu()) == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_lock.c", line 63 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 141966 5308 32767 0x10 0 1 syz-executor.4 *354472 52993 32767 0x1810 0x4080080 0 syz-executor.2 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a1086) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613da6,ffffffff82617104,3f,ffffffff8264968f) at __assert+0x25 sys/kern/subr_prf.c:161 _kernel_lock() at _kernel_lock+0xb2 sys/kern/kern_lock.c:63 single_thread_check_locked(ffff8000fffeea80,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000fffeea80,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff8000263e8210,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff8000263e8210,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000fffeea80,ffffffff8296a1a0,120,ffffffff82595f34,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(f8c40c95d60,2,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000fffeea80,ffff8000263e83a0,ffff8000263e8400) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff8000263e8470) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000263e8470) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf8c657b82c0, count: 3 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 "__mp_lock_held(&sched_lock, curcpu()) == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_lock.c", line 63 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a1086) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613da6,ffffffff82617104,3f,ffffffff8264968f) at __assert+0x25 sys/kern/subr_prf.c:161 _kernel_lock() at _kernel_lock+0xb2 sys/kern/kern_lock.c:63 single_thread_check_locked(ffff8000fffeea80,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000fffeea80,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff8000263e8210,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff8000263e8210,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000fffeea80,ffffffff8296a1a0,120,ffffffff82595f34,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(f8c40c95d60,2,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000fffeea80,ffff8000263e83a0,ffff8000263e8400) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff8000263e8470) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000263e8470) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf8c657b82c0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000263e7fd0 rbx 0xffffffff82989bb7 cpu_info_full_primary+0x2bb7 rdx 0 rcx 0 rax 0xffff8000fffeea80 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9830d0d1dc721bf8 r11 0x9bba141d9c45c721 r12 0xffffffff829899b8 cpu_info_full_primary+0x29b8 r13 0 r14 0 r15 0x1 rip 0xffffffff813e2898 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000263e7fc0 ss 0 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) pid=354472 stat=onproc flags process=1810 proc=4080080 pri=65, usrpri=65, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffef260,0xffff8000fffef7b0 process=0xffff8000ffff3618 user=0xffff8000263e3000, vmspace=0xfffffd806fcef748 estcpu=15, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 5308 141966 99276 32767 7 0x10 syz-executor.4 98128 285992 51907 32767 2 0x10 syz-executor.0 52993 385048 44760 32767 3 0x3810 suspend syz-executor.2 52993 468475 44760 32767 2 0x4081810 syz-executor.2 *52993 354472 44760 32767 7 0x4081890 syz-executor.2 52993 433781 44760 32767 2 0x4081890 syz-executor.2 52337 86707 85127 32767 2 0x10 syz-executor.5 77019 48964 52699 32767 2 0x10 syz-executor.1 59610 491046 22212 32767 2 0x10 syz-executor.7 99276 464795 32339 32767 3 0x90 nanoslp syz-executor.4 32339 134498 45317 0 3 0x82 wait syz-executor.4 51907 159332 11000 32767 3 0x90 nanoslp syz-executor.0 11000 118065 45317 0 3 0x82 wait syz-executor.0 85127 118449 82245 32767 3 0x90 nanoslp syz-executor.5 52699 158092 1384 32767 3 0x90 nanoslp syz-executor.1 82245 43250 45317 0 3 0x82 wait syz-executor.5 1384 381796 45317 0 3 0x82 wait syz-executor.1 98754 194160 0 0 3 0x14200 bored sosplice 74478 351077 84007 32767 3 0x90 nanoslp syz-executor.3 22212 366524 19819 32767 2 0x10 syz-executor.7 19819 379351 45317 0 3 0x82 wait syz-executor.7 84007 201257 45317 0 3 0x82 wait syz-executor.3 44760 365619 5531 32767 3 0x90 nanoslp syz-executor.2 5531 404074 45317 0 3 0x82 wait syz-executor.2 45317 3941 49068 0 3 0x82 thrsleep syz-fuzzer 45317 403296 49068 0 3 0x4000082 nanoslp syz-fuzzer 45317 506312 49068 0 3 0x4000082 thrsleep syz-fuzzer 45317 437973 49068 0 3 0x4000082 thrsleep syz-fuzzer 45317 350389 49068 0 3 0x4000002 biowait syz-fuzzer 45317 189820 49068 0 3 0x4000082 thrsleep syz-fuzzer 45317 39996 49068 0 3 0x4000082 kqread syz-fuzzer 45317 315639 49068 0 3 0x4000082 thrsleep syz-fuzzer 49068 386970 78100 0 3 0x10008a sigsusp ksh 78100 393951 50498 0 3 0x9a kqread sshd 31761 2305 1 0 3 0x100083 ttyin getty 50498 148420 1 0 3 0x88 kqread sshd 57631 59132 18288 73 3 0x1100090 kqread syslogd 18288 287564 1 0 3 0x100082 netio syslogd 86099 225279 1 0 3 0x100080 kqread resolvd 63912 217464 69271 77 3 0x100092 kqread dhcpleased 97597 350852 69271 77 3 0x100092 kqread dhcpleased 69271 10474 1 0 3 0x80 kqread dhcpleased 55603 487957 0 0 3 0x14200 bored smr 33131 519617 0 0 2 0x14200 zerothread 43485 313825 0 0 3 0x14200 aiodoned aiodoned 92804 504241 0 0 3 0x14200 syncer update 88170 137513 0 0 3 0x14200 cleaner cleaner 80692 348445 0 0 3 0x14200 reaper reaper 99456 503777 0 0 3 0x14200 pgdaemon pagedaemon 36227 191720 0 0 3 0x14200 bored viomb 23392 434116 0 0 3 0x40014200 acpi0 acpi0 64282 396300 0 0 3 0x40014200 idle1 99167 109815 0 0 3 0x14200 bored softnet 44975 383899 0 0 3 0x14200 bored softnet 66908 107908 0 0 3 0x14200 bored softnet 36548 74653 0 0 3 0x14200 bored softnet 30235 362082 0 0 3 0x14200 bored systqmp 47015 436022 0 0 3 0x14200 bored systq 32633 230540 0 0 3 0x40014200 bored softclock 68607 76760 0 0 3 0x40014200 idle0 1 435033 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive sched_lock &sched_lock r = 0 (0xffffffff82a153e0) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d4 sys/kern/sched_bsd.c:419 #3 single_thread_check_locked+0x17f sys/kern/kern_sig.c:2045 #4 single_thread_check+0x4b sys/kern/kern_sig.c:2057 #5 sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] #5 sleep_finish+0x75 sys/kern/kern_synch.c:400 #6 rwsleep+0xd5 sys/kern/kern_synch.c:314 #7 futex_wait+0x13c sys/kern/sys_futex.c:260 #8 sys_futex+0xf8 sys/kern/sys_futex.c:111 #9 syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] #9 syscall+0x484 sys/arch/amd64/amd64/trap.c:585 #10 Xsyscall+0x128 Process 5308 (syz-executor.4) thread 0xffff8000fffee2a0 (141966) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ad3210) #0 witness_lock+0x44d #1 syscall+0x3e8 mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3e8 sys/arch/amd64/amd64/trap.c:585 #2 Xsyscall+0x128 Process 45317 (syz-fuzzer) thread 0xffff8000fffef500 (350389) exclusive rrwlock inode r = 0 (0xfffffd8068d381b0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:567 #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:1852 #13 syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x484 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068d38700) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:567 #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:1852 #8 syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x484 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10192 6408K 6420K 78643K 11304 0 pcb 13 10K 12K 78643K 15 0 rtable 218 6K 7K 78643K 640 0 ifaddr 74 16K 17K 78643K 125 0 sysctl 0 0K 2K 78643K 7 0 counters 54 35K 35K 78643K 68 0 ioctlops 0 0K 2K 78643K 51 0 iov 0 0K 28K 78643K 949 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 4134 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 58 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1571 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 22 81K 121K 78643K 4742 0 sigio 0 0K 0K 78643K 140 0 proc 56 78K 115K 78643K 971 0 subproc 91 5K 6K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 633 0 in_multi 88 5K 6K 78643K 224 0 ether_multi 1 0K 0K 78643K 21 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 169 758K 758K 78643K 169 0 exec 0 0K 2K 78643K 1655 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 250 78K 106K 78643K 30506 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 199 0 NDP 10 0K 2K 78643K 45 0 temp 116 4721K 4850K 78643K 14389 0 kqueue 12 18K 26K 78643K 504 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 120 700 0 697 12 11 1 5 0 8 0 rtentry 112 186 0 84 4 0 4 4 0 8 0 unpcb 136 3209 0 3196 38 35 3 6 0 8 2 syncache 296 78 0 78 15 14 1 1 0 8 1 tcpqe 32 314 0 314 10 10 0 1 0 8 0 tcpcb 736 3510 0 3506 108 105 3 22 0 8 2 arp 120 34 0 16 1 0 1 1 0 8 0 inpcb 320 5169 0 5157 89 87 2 13 0 8 0 nd6 48 47 0 25 1 0 1 1 0 8 0 kcovpl 48 14 0 7 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 747 0 333 31 1 30 30 0 8 2 art_table 32 748 0 333 4 0 4 4 0 8 0 art_node 16 185 0 92 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semapl 112 1563 0 1553 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 9662 0 8218 91 0 91 91 0 8 0 ffsino 272 9662 0 8218 97 0 97 97 0 8 0 nchpl 144 15976 0 14339 63 0 63 63 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 60620 0 60620 3 2 1 2 0 8 1 percpumem 16 46 0 7 1 0 1 1 0 8 0 kstatmem 264 34 0 14 2 0 2 2 0 8 0 scxspl 216 43448 0 43447 20 18 2 8 0 8 1 plimitpl 152 1315 0 1294 4 3 1 2 0 8 0 sigapl 424 5007 0 4955 7 0 7 7 0 8 0 futexpl 64 44673 0 44671 3 2 1 1 0 8 0 knotepl 120 649 0 0 10 0 10 10 0 8 0 kqueuepl 224 2066 0 2058 39 38 1 5 0 8 0 pipepl 336 1499 0 1472 45 39 6 8 0 8 3 fdescpl 496 4989 0 4956 7 2 5 6 0 8 0 filepl 152 43334 0 43115 103 88 15 18 0 8 5 lockfpl 104 722 0 720 3 2 1 3 0 8 0 lockfspl 48 179 0 177 1 0 1 1 0 8 0 sessionpl 144 29 0 14 1 0 1 1 0 8 0 pgrppl 48 186 0 171 1 0 1 1 0 8 0 ucredpl 104 14692 0 14675 1 0 1 1 0 8 0 zombiepl 144 4956 0 4955 1 0 1 1 0 8 0 processpl 1064 5007 0 4955 5 1 4 5 0 8 0 procpl 672 14699 0 14637 18 11 7 8 0 8 1 sosppl 168 58 0 58 7 6 1 1 0 8 1 sockpl 480 9208 0 9182 236 223 13 22 0 8 8 mcl64k 65536 33 0 0 4 1 3 3 0 8 0 mcl16k 16384 26 0 0 4 1 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 35 0 0 4 1 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 213 0 0 23 0 23 23 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 1080 0 0 47 0 47 47 0 8 0 bufpl 288 10917 0 4587 453 0 453 453 0 8 0 anonpl 24 1007305 0 995359 166 72 94 108 0 186 0 amapchunkpl 152 92042 0 91471 106 77 29 40 0 158 1 amappl16 200 14677 0 14326 85 65 20 32 0 8 0 amappl15 192 2328 0 2323 1 0 1 1 0 8 0 amappl14 184 82 0 79 1 0 1 1 0 8 0 amappl13 176 1119 0 1114 1 0 1 1 0 8 0 amappl12 168 679 0 671 1 0 1 1 0 8 0 amappl11 160 91 0 77 1 0 1 1 0 8 0 amappl10 152 60 0 57 1 0 1 1 0 8 0 amappl9 144 1102 0 1097 1 0 1 1 0 8 0 amappl8 136 779 0 699 3 0 3 3 0 8 0 amappl7 128 166 0 154 1 0 1 1 0 8 0 amappl6 120 870 0 848 2 1 1 2 0 8 0 amappl5 112 3628 0 3609 1 0 1 1 0 8 0 amappl4 104 1075 0 1051 1 0 1 1 0 8 0 amappl3 96 16001 0 15952 2 0 2 2 0 8 0 amappl2 88 7059 0 6986 3 1 2 3 0 8 0 amappl1 80 120539 0 119916 20 4 16 19 0 8 0 amappl 88 29775 0 29612 5 0 5 5 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 4989 0 4956 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4989 0 4956 1 0 1 1 0 8 0 vmmpekpl 168 46156 0 46101 3 0 3 3 0 8 0 vmmpepl 168 491434 0 488959 233 106 127 139 0 357 9 vmsppl 368 4988 0 4956 4 0 4 4 0 8 0 rwobjpl 56 129653 0 122329 114 7 107 110 0 8 0 pdppl 4096 9985 0 9912 300 221 79 93 0 8 6 pvpl 32 2037996 0 2021119 332 165 167 240 0 265 0 pmappl 248 4988 0 4956 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1224 0 373 25 0 25 25 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:437 panic(ffffffff825a1086) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613da6,ffffffff82617104,3f,ffffffff8264968f) at __assert+0x25 sys/kern/subr_prf.c:161 _kernel_lock() at _kernel_lock+0xb2 sys/kern/kern_lock.c:63 single_thread_check_locked(ffff8000fffeea80,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000fffeea80,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff8000263e8210,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff8000263e8210,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000fffeea80,ffffffff8296a1a0,120,ffffffff82595f34,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(f8c40c95d60,2,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000fffeea80,ffff8000263e83a0,ffff8000263e8400) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff8000263e8470) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000263e8470) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf8c657b82c0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020de8ff0) 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+0xb sys/dev/kcov.c:144 wakeup_n(ffffffff82ba36d4,ffffffff) at wakeup_n+0x37 uvm_pmr_getpages(1,0,0,1,0,1,fe1f66d6ffc0e00d,fffffd80681cc390) at uvm_pmr_getpages+0xeef sys/uvm/uvm_pmemrange.c:1207 uvm_pagealloc(0,0,fffffd80681cc390,2) at uvm_pagealloc+0x1a4 sys/uvm/uvm_page.c:910 uvm_fault_lower(ffff8000261a4d40,ffff8000261a4d78,ffff8000261a4cc0,0) at uvm_fault_lower+0x1aa uvm_fault(fffffd806fcefb98,63b9532d000,0,1) at uvm_fault+0x238 upageflttrap(ffff8000261a4eb0,63b9532d008) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff8000261a4eb0) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc9b30, count: 3 ddb{1}> trace x86_ipi_db(ffff800020de8ff0) 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+0xb sys/dev/kcov.c:144 wakeup_n(ffffffff82ba36d4,ffffffff) at wakeup_n+0x37 uvm_pmr_getpages(1,0,0,1,0,1,fe1f66d6ffc0e00d,fffffd80681cc390) at uvm_pmr_getpages+0xeef sys/uvm/uvm_pmemrange.c:1207 uvm_pagealloc(0,0,fffffd80681cc390,2) at uvm_pagealloc+0x1a4 sys/uvm/uvm_page.c:910 uvm_fault_lower(ffff8000261a4d40,ffff8000261a4d78,ffff8000261a4cc0,0) at uvm_fault_lower+0x1aa uvm_fault(fffffd806fcefb98,63b9532d000,0,1) at uvm_fault+0x238 upageflttrap(ffff8000261a4eb0,63b9532d008) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff8000261a4eb0) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc9b30, count: -12