panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *300899 73100 0 0x8000000 0 1 syz-executor.5 437183 64865 0 0x14000 0x40000200 0 softclock db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8295763f) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290e26d,ffffffff828b5dab,90,ffffffff829151ff) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd80073ab980,fffffd806614b820,1f0a3000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806614b820,1f0a3000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806614b7d0,7c28ffcac000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd806614b7d0,7c28ffcac000,7a7e3000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002a216250,ffff80002a216288,ffff80002a216150,ffff80002a2161d0) at uvm_fault_upper_lookup+0x2b2 uvm_fault(fffffd80594a4a68,7c28ffcad000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002a2163d0,7c28ffcad6d0) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a2163d0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c28ffcad840, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8295763f) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290e26d,ffffffff828b5dab,90,ffffffff829151ff) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd80073ab980,fffffd806614b820,1f0a3000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806614b820,1f0a3000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806614b7d0,7c28ffcac000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd806614b7d0,7c28ffcac000,7a7e3000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002a216250,ffff80002a216288,ffff80002a216150,ffff80002a2161d0) at uvm_fault_upper_lookup+0x2b2 uvm_fault(fffffd80594a4a68,7c28ffcad000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002a2163d0,7c28ffcad6d0) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a2163d0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c28ffcad840, count: -12 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a215d70 rbx 0xffff800029ceccdf rdx 0 rcx 0xffff80002f2ca7f0 rax 0xffff800029cebff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x32d60df7e84a9ebf r11 0x6ccc6ccf76e0f6f6 r12 0xffff800029cecae0 r13 0 r14 0 r15 0x1 rip 0xffffffff81a1642c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a215d60 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) tid=300899 pid=73100 tcnt=2 stat=onproc flags process=8000000 proc=0 runpri=80, usrpri=80, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002f2cbc70,0xffff80002f2ca050 process=0xffff800031929f38 user=0xffff80002a211000, vmspace=0xfffffd80594a4a68 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76130 358495 16391 0 2 0x8000000 syz-executor.3 76130 477729 16391 0 2 0xc000080 syz-executor.3 *73100 300899 17751 0 7 0x8000000 syz-executor.5 73100 213267 17751 0 2 0xc000000 syz-executor.5 35142 259881 12168 0 3 0x8000002 biowait syz-executor.4 66915 284311 1 0 3 0x18100083 ttyin getty 23631 303328 12168 0 2 0x8000482 syz-executor.1 6987 132658 12168 0 2 0x8000002 syz-executor.7 16391 363427 12168 0 2 0x8000482 syz-executor.3 17751 420999 12168 0 2 0x8000482 syz-executor.5 72875 268898 0 0 3 0x14200 acct acct 58054 261238 12168 0 2 0x8000002 syz-executor.0 1967 405625 0 0 3 0x14280 nfsidl nfsio 82679 242813 0 0 3 0x14280 nfsidl nfsio 78581 123808 0 0 3 0x14280 nfsidl nfsio 41538 233959 0 0 3 0x14280 nfsidl nfsio 77240 407581 0 0 3 0x14280 nfsidl nfsio 21309 288077 0 0 3 0x14280 nfsidl nfsio 44954 240451 0 0 3 0x14280 nfsidl nfsio 93601 160119 0 0 3 0x14280 nfsidl nfsio 9377 454042 0 0 3 0x14280 nfsidl nfsio 25858 101446 0 0 3 0x14280 nfsidl nfsio 81250 294651 0 0 3 0x14280 nfsidl nfsio 81895 48230 0 0 3 0x14280 nfsidl nfsio 83441 468189 0 0 3 0x14280 nfsidl nfsio 89451 458586 0 0 3 0x14280 nfsidl nfsio 1637 5430 0 0 3 0x14280 nfsidl nfsio 10705 420660 0 0 3 0x14280 nfsidl nfsio 18893 39363 0 0 3 0x14280 nfsidl nfsio 61037 460703 0 0 3 0x14280 nfsidl nfsio 25667 269670 0 0 3 0x14280 nfsidl nfsio 9019 400093 0 0 3 0x14280 nfsidl nfsio 67472 367893 0 0 3 0x14200 bored sosplice 95044 253645 12168 0 3 0x8000002 biowait syz-executor.6 12168 318458 10460 0 3 0x1a000082 kqread syz-fuzzer 12168 382853 10460 0 3 0x1e000082 nanoslp syz-fuzzer 12168 236802 10460 0 3 0x1e000082 thrsleep syz-fuzzer 12168 397730 10460 0 3 0x1e000082 thrsleep syz-fuzzer 12168 29443 10460 0 3 0x1e000082 wait syz-fuzzer 12168 511774 10460 0 3 0x1e000082 wait syz-fuzzer 12168 270009 10460 0 3 0x1e000082 thrsleep syz-fuzzer 12168 301362 10460 0 3 0x1e000082 wait syz-fuzzer 12168 347972 10460 0 3 0x1e000002 biowait syz-fuzzer 12168 108966 10460 0 3 0x1e000082 thrsleep syz-fuzzer 12168 94507 10460 0 3 0x1e000082 thrsleep syz-fuzzer 12168 100144 10460 0 3 0x1e000082 thrsleep syz-fuzzer 12168 120831 10460 0 3 0x1e000082 wait syz-fuzzer 12168 495403 10460 0 3 0x1e000082 wait syz-fuzzer 12168 455614 10460 0 3 0x1e000082 wait syz-fuzzer 12168 423845 10460 0 3 0x1e000082 wait syz-fuzzer 10460 443114 20219 0 3 0x810008a sigsusp ksh 20219 309854 73565 0 3 0x1800009a kqread sshd 73565 112740 1 0 3 0x18000088 kqread sshd 68511 159568 87783 74 3 0x19100092 bpf pflogd 87783 11915 1 0 3 0x18000080 sbwait pflogd 18651 464870 54976 73 2 0x19100010 syslogd 54976 64131 1 0 3 0x18100082 sbwait syslogd 80333 219093 1 0 3 0x18100080 kqread resolvd 15363 291554 17349 77 3 0x18100092 kqread dhcpleased 37537 108031 17349 77 3 0x18100092 kqread dhcpleased 17349 204153 1 0 3 0x18000080 kqread dhcpleased 48921 387618 0 0 3 0x14200 bored smr 60318 477458 0 0 2 0x14200 zerothread 31651 508541 0 0 3 0x14200 aiodoned aiodoned 71276 204027 0 0 3 0x14200 syncer update 10822 304837 0 0 3 0x14200 cleaner cleaner 74433 414396 0 0 3 0x14200 reaper reaper 31273 104560 0 0 3 0x14200 pgdaemon pagedaemon 21996 214629 0 0 3 0x14200 bored viomb 99616 46115 0 0 3 0x40014200 acpi0 acpi0 55016 124793 0 0 3 0x40014200 idle1 85185 312853 0 0 3 0x14200 bored softnet3 74339 200880 0 0 3 0x14200 bored softnet2 34674 64486 0 0 3 0x14200 bored softnet1 7826 246306 0 0 3 0x14200 bored softnet0 44485 498024 0 0 3 0x14200 bored systqmp 43263 36821 0 0 3 0x14200 bored systq 35525 311288 0 0 3 0x14200 tmoslp softclockmp 64865 437183 0 0 7 0x40014200 softclock 34454 30960 0 0 3 0x40014200 idle0 1 135127 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806614b7e0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 pmap_enter+0x1c6 rcr3 machine/cpufunc.h:141 [inline] #3 pmap_enter+0x1c6 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] #3 pmap_enter+0x1c6 sys/arch/amd64/amd64/pmap.c:2716 #4 uvm_fault_upper_lookup+0x2b2 #5 uvm_fault+0x129 sys/uvm/uvm_fault.c:605 #6 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 73100 (syz-executor.5) thread 0xffff80002f2ca7f0 (300899) Process 35142 (syz-executor.4) thread 0xffff80002f2cbc70 (259881) Process 6987 (syz-executor.7) thread 0xffff80002e4a5c58 (132658) Process 95044 (syz-executor.6) thread 0xffff8000ffffd490 (253645) Process 12168 (syz-fuzzer) thread 0xffff80002a1491f8 (347972) Process 18651 (syslogd) thread 0xffff8000ffffdc40 (464870) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10202 6521K 6969K 166960K 14451 0 pcb 18 12K 12K 166960K 563 0 rtable 222 15K 16K 166960K 1663 0 pf 33 9K 10K 166960K 173 0 ifaddr 41 15K 16K 166960K 195 0 ifgroup 58 2K 3K 166960K 299 0 sysctl 4 1K 1K 166960K 11 0 counters 64 36K 36K 166960K 172 0 ioctlops 0 0K 4K 166960K 1696 0 iov 0 0K 20K 166960K 276 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1432 90K 91K 166960K 3630 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 72 0 VM map 2 1K 1K 166960K 2 0 sem 21 1K 1K 166960K 200 0 dirhash 12 2K 2K 166960K 78 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 11 37K 93K 166960K 3531 0 sigio 0 0K 0K 166960K 75 0 proc 70 91K 128K 166960K 1599 0 subproc 91 5K 7K 166960K 464 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 463 0 in_multi 84 6K 7K 166960K 520 0 ether_multi 1 0K 0K 166960K 24 0 mrt 2 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 1097 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 278 147K 169K 166960K 33099 0 UVM aobj 31 2K 4K 166960K 38 0 pinsyscall 35 70K 108K 166960K 5460 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 303 0 NDP 12 0K 2K 166960K 136 0 temp 80 6819K 6952K 166960K 132709 0 kqueue 12 18K 30K 166960K 520 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 120 502 0 499 3 2 1 2 0 8 0 rtentry 112 530 0 432 4 0 4 4 0 8 0 unpcb 144 3097 0 3080 16 14 2 4 0 8 1 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 107 0 107 1 1 0 1 0 8 0 tcpcb 808 907 0 902 14 13 1 5 0 8 0 arp 120 115 0 93 1 0 1 1 0 8 0 inpcb 384 3646 0 3637 34 32 2 9 0 8 1 nd6 136 124 0 103 2 0 2 2 0 8 0 pkpcb 40 18 0 18 11 11 0 1 0 8 0 kcovpl 48 35 0 28 1 0 1 1 0 8 0 ppxss 1168 2 0 2 2 2 0 1 0 8 0 pffrag 232 31 0 29 3 2 1 1 0 482 0 pffrnode 88 29 0 27 3 2 1 1 0 8 0 pffrent 40 355 0 353 3 2 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 24 288 0 252 1 0 1 1 0 8 0 pfstkey 128 288 0 252 2 0 2 2 0 8 0 pfstate 376 288 0 252 8 2 6 6 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 1914 0 1463 39 10 29 32 0 8 0 art_table 32 1915 0 1463 5 0 5 5 0 8 0 art_node 16 511 0 421 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 6 2 1 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 196 0 177 1 0 1 1 0 8 0 shmpl 112 35 0 7 1 0 1 1 0 8 0 dirhash 1024 61 0 44 3 0 3 3 0 8 0 dino2pl 256 7078 0 5542 97 0 97 97 0 8 0 ffsino 272 7078 0 5542 103 0 103 103 0 8 0 nchpl 144 12393 0 11797 67 40 27 67 0 8 0 uvmvnodes 80 7714 0 0 158 0 158 158 0 8 0 vnodes 216 7714 0 0 429 0 429 429 0 8 0 namei 1024 42960 0 42959 7 6 1 2 0 8 0 percpumem 16 100 0 54 1 0 1 1 0 8 0 vcpupl 3904 17 0 2 2 0 2 2 0 8 0 vmpool 696 23 0 8 2 0 2 2 0 8 0 kstatmem 264 132 0 108 2 0 2 2 0 8 0 scsiplug 72 3 0 3 3 3 0 1 0 8 0 scxspl 216 79653 0 79650 25 24 1 8 1 8 0 plimitpl 152 583 0 568 1 0 1 1 0 8 0 sigapl 424 3825 0 3760 10 1 9 9 0 8 0 futexpl 64 52166 0 52166 3 2 1 1 0 8 1 knotepl 120 890 0 0 20 1 19 19 0 8 0 kqueuepl 216 1021 0 1013 3 2 1 3 0 8 0 pipepl 320 703 0 676 7 4 3 6 0 8 0 fdescpl 496 3780 0 3756 5 0 5 5 0 8 0 filepl 152 25157 0 24929 21 8 13 13 0 8 0 lockfpl 104 1030 0 1028 1 0 1 1 0 8 0 lockfspl 48 430 0 428 1 0 1 1 0 8 0 sessionpl 144 59 0 43 1 0 1 1 0 8 0 pgrppl 48 104 0 88 1 0 1 1 0 8 0 ucredpl 104 4166 0 4153 1 0 1 1 0 8 0 zombiepl 144 3761 0 3760 1 0 1 1 0 8 0 processpl 1136 3825 0 3760 6 0 6 6 0 8 0 procpl 656 7936 0 7854 11 2 9 10 0 8 0 srpgc 96 27 0 27 9 9 0 1 0 8 0 sosppl 168 37 0 37 14 14 0 1 0 8 0 sockpl 664 7369 0 7340 43 39 4 9 0 8 1 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 443 0 0 41 5 36 41 0 8 0 mtagpl 96 40 0 0 1 0 1 1 0 8 0 mbufpl 256 5177 0 0 309 0 309 309 0 8 0 bufpl 280 15835 0 7208 617 0 617 617 0 8 0 anonpl 24 607233 0 601282 171 101 70 86 0 186 2 amapchunkpl 152 108795 0 108193 101 61 40 44 0 158 4 amappl16 200 14005 0 13894 117 104 13 32 0 8 0 amappl15 192 11 0 11 2 2 0 1 0 8 0 amappl14 184 268 0 254 2 0 2 2 0 8 0 amappl13 176 26 0 25 2 1 1 1 0 8 0 amappl12 168 4880 0 4853 4 2 2 3 0 8 0 amappl11 160 77 0 63 1 0 1 1 0 8 0 amappl10 152 84 0 74 1 0 1 1 0 8 0 amappl9 144 183 0 183 5 5 0 1 0 8 0 amappl8 136 279 0 231 3 0 3 3 0 8 0 amappl7 128 60 0 43 1 0 1 1 0 8 0 amappl6 120 768 0 747 2 0 2 2 0 8 0 amappl5 112 286 0 271 1 0 1 1 0 8 0 amappl4 104 852 0 807 3 1 2 3 0 8 0 amappl3 96 20542 0 20476 3 0 3 3 0 8 0 amappl2 88 4294 0 4222 4 2 2 4 0 8 0 amappl1 80 22077 0 21547 23 10 13 23 0 8 0 amappl 88 32096 0 31923 6 0 6 6 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 37 0 7 1 0 1 1 0 8 0 uaddrrnd 24 3803 0 3764 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3803 0 3764 1 0 1 1 0 8 0 vmmpekpl 168 30740 0 30667 5 1 4 4 0 8 0 vmmpepl 168 247735 0 245970 199 100 99 122 0 357 0 vmsppl 440 3802 0 3764 8 2 6 6 0 8 0 rwobjpl 56 70911 0 62037 137 10 127 127 0 8 0 pdppl 4096 7613 0 7543 309 228 81 87 0 8 11 pvpl 32 49097 0 0 396 0 396 396 0 265 0 pmappl 248 3802 0 3764 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 934 0 267 20 0 20 20 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82ca9ff0) at x86_ipi_db+0x1e 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+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:158 __mp_lock(ffffffff82d9e2b0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d9e2b0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82d9e2b0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x491 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19a sys/kern/kern_synch.c:417 msleep(ffffffff82db1270,ffffffff82cb2d60,0,ffffffff829572f0,0) at msleep+0xeb sys/kern/kern_synch.c:249 softclock_thread(ffff8000ffffecd0) at softclock_thread+0xcf sys/kern/kern_timeout.c:810 end trace frame: 0x0, count: 5 ddb{0}> trace x86_ipi_db(ffffffff82ca9ff0) at x86_ipi_db+0x1e 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+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:158 __mp_lock(ffffffff82d9e2b0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d9e2b0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82d9e2b0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x491 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19a sys/kern/kern_synch.c:417 msleep(ffffffff82db1270,ffffffff82cb2d60,0,ffffffff829572f0,0) at msleep+0xeb sys/kern/kern_synch.c:249 softclock_thread(ffff8000ffffecd0) at softclock_thread+0xcf sys/kern/kern_timeout.c:810 end trace frame: 0x0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8295763f) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290e26d,ffffffff828b5dab,90,ffffffff829151ff) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd80073ab980,fffffd806614b820,1f0a3000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806614b820,1f0a3000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806614b7d0,7c28ffcac000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd806614b7d0,7c28ffcac000,7a7e3000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002a216250,ffff80002a216288,ffff80002a216150,ffff80002a2161d0) at uvm_fault_upper_lookup+0x2b2 uvm_fault(fffffd80594a4a68,7c28ffcad000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002a2163d0,7c28ffcad6d0) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a2163d0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c28ffcad840, count: 3 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8295763f) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290e26d,ffffffff828b5dab,90,ffffffff829151ff) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd80073ab980,fffffd806614b820,1f0a3000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806614b820,1f0a3000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806614b7d0,7c28ffcac000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd806614b7d0,7c28ffcac000,7a7e3000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002a216250,ffff80002a216288,ffff80002a216150,ffff80002a2161d0) at uvm_fault_upper_lookup+0x2b2 uvm_fault(fffffd80594a4a68,7c28ffcad000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002a2163d0,7c28ffcad6d0) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a2163d0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c28ffcad840, count: -12