panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 305 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *394122 25846 0 0 0x4000000 0K syz-executor.4 477742 67302 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825739a5) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e91ae,ffffffff82632dac,131,ffffffff825fdeb9) at __assert+0x25 sys/kern/subr_prf.c:161 tun_clone_destroy(ffff800000c02800) at tun_clone_destroy+0x278 sys/net/if_tun.c:305 if_clone_destroy(ffff80002e43eb80) at if_clone_destroy+0x132 sys/net/if.c:1218 soo_ioctl(fffffd8067289b58,80206979,ffff80002e43eb80,ffff800024c70fd0) at soo_ioctl+0x26c sys_ioctl(ffff800024c70fd0,ffff80002e43ec98,ffff80002e43ecf0) at sys_ioctl+0x4a2 syscall(ffff80002e43ed60) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e43ed60) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x55246f91590, count: 6 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 "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 305 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff825739a5) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e91ae,ffffffff82632dac,131,ffffffff825fdeb9) at __assert+0x25 sys/kern/subr_prf.c:161 tun_clone_destroy(ffff800000c02800) at tun_clone_destroy+0x278 sys/net/if_tun.c:305 if_clone_destroy(ffff80002e43eb80) at if_clone_destroy+0x132 sys/net/if.c:1218 soo_ioctl(fffffd8067289b58,80206979,ffff80002e43eb80,ffff800024c70fd0) at soo_ioctl+0x26c sys_ioctl(ffff800024c70fd0,ffff80002e43ec98,ffff80002e43ecf0) at sys_ioctl+0x4a2 syscall(ffff80002e43ed60) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e43ed60) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x55246f91590, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e43e990 rbx 0xffffffff82920bff cpu_info_full_primary+0x2bff rdx 0xffff800000bd13c0 rcx 0 rax 0xffff800024c70fd0 r8 0 r9 0x8080808080808080 r10 0xcb50651b286b49fc r11 0x34c88111e4e2a1ab r12 0xffffffff82920a00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff8147cfe8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e43e980 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) pid=394122 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff800024c71a50,0xffff800024c70800 process=0xffff8000ffff3200 user=0xffff80002e439000, vmspace=0xfffffd8076e7b478 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25846 406333 23833 0 2 0 syz-executor.4 *25846 394122 23833 0 7 0x4000000 syz-executor.4 14948 461812 55781 0 2 0 syz-executor.1 14948 440605 55781 0 3 0x4000080 kqsel syz-executor.1 30397 514173 53685 0 2 0x81000 syz-executor.6 30397 8846 53685 0 3 0x4003000 suspend syz-executor.6 40297 301895 39919 0 2 0 syz-executor.5 40297 267940 39919 0 2 0x4000000 syz-executor.5 35856 37309 23949 0 2 0 syz-executor.7 23833 230444 3949 0 3 0x82 nanoslp syz-executor.4 10942 472101 3949 0 2 0x482 syz-executor.3 79273 238013 3949 0 2 0x2 syz-executor.2 55781 480918 3949 0 3 0x82 nanoslp syz-executor.1 23949 174857 3949 0 2 0x482 syz-executor.7 60734 153905 1 0 3 0x100083 ttyin getty 88414 226693 0 0 3 0x14200 acct acct 53685 216665 3949 0 2 0x482 syz-executor.6 39919 175635 3949 0 2 0x482 syz-executor.5 61939 512028 3949 0 2 0x482 syz-executor.0 20622 426553 0 0 3 0x14200 bored sosplice 3949 456673 17780 0 3 0x82 kqread syz-fuzzer 3949 319198 17780 0 3 0x4000082 nanoslp syz-fuzzer 3949 173867 17780 0 3 0x4000082 thrsleep syz-fuzzer 3949 265536 17780 0 3 0x4000082 thrsleep syz-fuzzer 3949 408839 17780 0 3 0x4000082 nanoslp syz-fuzzer 3949 244418 17780 0 3 0x4000082 thrsleep syz-fuzzer 3949 218115 17780 0 3 0x4000082 thrsleep syz-fuzzer 3949 118653 17780 0 3 0x4000082 thrsleep syz-fuzzer 3949 476552 17780 0 3 0x4000082 thrsleep syz-fuzzer 17780 204601 90194 0 3 0x10008a sigsusp ksh 90194 197878 93175 0 3 0x9a kqread sshd 93175 420993 1 0 3 0x88 kqread sshd 42506 73919 60376 74 3 0x100092 bpf pflogd 60376 74831 1 0 3 0x80 netio pflogd 29029 198017 21592 73 3 0x100090 kqread syslogd 21592 188981 1 0 3 0x100082 netio syslogd 61679 200659 1 0 3 0x100080 kqread resolvd 58797 417011 12945 77 2 0x100092 dhcpleased 46660 458107 12945 77 3 0x100092 kqread dhcpleased 12945 310604 1 0 3 0x80 kqread dhcpleased 70486 192110 0 0 2 0x14200 smr 87936 114060 0 0 2 0x14200 zerothread 57981 10627 0 0 3 0x14200 aiodoned aiodoned 81967 424172 0 0 3 0x14200 syncer update 7065 387733 0 0 3 0x14200 cleaner cleaner 67302 477742 0 0 7 0x14200 reaper 57597 510003 0 0 3 0x14200 pgdaemon pagedaemon 46121 393126 0 0 3 0x14200 bored viomb 12349 488159 0 0 3 0x40014200 acpi0 acpi0 33796 437194 0 0 3 0x40014200 idle1 48015 301637 0 0 3 0x14200 bored softnet 82861 472035 0 0 3 0x14200 bored systqmp 19583 299990 0 0 3 0x14200 bored systq 8679 499208 0 0 3 0x40014200 bored softclock 63691 350172 0 0 3 0x40014200 idle0 1 97106 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 25846 (syz-executor.4) thread 0xffff800024c70fd0 (394122) exclusive rwlock clonelk r = 0 (0xffffffff828e4a20) #0 witness_lock+0x44d #1 if_clone_destroy+0x49 #2 soo_ioctl+0x26c #3 sys_ioctl+0x4a2 #4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a3d4a8) #0 witness_lock+0x44d #1 soo_ioctl+0x25a sys/kern/sys_socket.c:136 #2 sys_ioctl+0x4a2 #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 79273 (syz-executor.2) thread 0xffff800024c71510 (238013) exclusive rrwlock inode r = 0 (0xfffffd805a21c5e8) #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:677 #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:1849 #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 (0xfffffd806e290818) #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:1849 #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 10269 6536K 8140K 78643K 45296 0 pcb 15 20K 22K 78643K 3205 0 rtable 251 22K 24K 78643K 4253 0 ifaddr 106 24K 27K 78643K 1527 0 sysctl 3 1K 1K 78643K 3 0 counters 60 36K 36K 78643K 500 0 ioctlops 0 0K 4K 78643K 6463 0 iov 0 0K 20K 78643K 2018 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1512 94K 95K 78643K 13825 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 212 0 VM map 2 1K 1K 78643K 2 0 sem 26 10K 20K 78643K 3230 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 93K 78643K 22169 0 sigio 0 0K 0K 78643K 310 0 proc 71 87K 111K 78643K 2931 0 subproc 104 6K 7K 78643K 823 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1167 0 in_multi 82 5K 6K 78643K 1509 0 ether_multi 1 0K 0K 78643K 238 0 mrt 2 0K 0K 78643K 88 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 289 1288K 1288K 78643K 289 0 exec 0 0K 2K 78643K 4412 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 659 1433K 1434K 78643K 283765 0 UVM aobj 131 6K 6K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1113 0 NDP 15 0K 2K 78643K 429 0 temp 151 4715K 4792K 78643K 134401 0 kqueue 12 18K 26K 78643K 1306 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 1659 0 1656 24 23 1 3 0 8 0 rtentry 112 1020 0 923 4 1 3 4 0 8 0 unpcb 136 30236 0 30221 211 205 6 8 0 8 5 syncache 296 72 0 72 22 22 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 1081 0 1081 10 10 0 1 0 8 0 tcpcb 736 7743 0 7736 263 259 4 32 0 8 3 arp 120 146 0 127 1 0 1 1 0 8 0 inpcb 304 33740 0 33729 331 327 4 17 0 8 3 rttmr 72 19 0 19 5 5 0 1 0 8 0 nd6 48 260 0 240 1 0 1 1 0 8 0 pkpcb 40 152 0 152 12 12 0 1 0 8 0 kcovpl 48 63 0 55 1 0 1 1 0 8 0 ppxss 1248 83 0 83 20 20 0 1 0 8 0 pfstscr 40 12 0 12 2 2 0 1 0 8 0 pffrag 232 121 0 119 10 9 1 1 0 482 0 pffrnode 88 121 0 119 10 9 1 1 0 8 0 pffrent 40 337 0 335 11 10 1 1 0 8 0 pfosfp 40 1431 0 1007 5 0 5 5 0 8 0 pfosfpen 112 1431 0 716 21 0 21 21 0 8 0 pfrke_plain 168 5 0 5 1 1 0 1 0 8 0 pfrktable 1344 312 0 297 2 0 2 2 0 8 0 pftag 88 76 0 72 1 0 1 1 0 8 0 pfstitem 24 110 0 108 1 0 1 1 0 8 0 pfstkey 112 130 0 128 2 1 1 2 0 8 0 pfstate 320 118 0 116 5 4 1 5 0 8 0 pfrule 1360 133 0 99 4 1 3 3 0 8 0 art_heap8 4096 4 0 3 4 3 1 3 0 8 0 art_heap4 256 4341 0 3970 50 26 24 31 0 8 0 art_table 32 4345 0 3973 4 0 4 4 0 8 0 art_node 16 1008 0 923 1 0 1 1 0 8 0 sysvmsgpl 40 60 0 31 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 3224 0 3200 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 31661 0 30144 96 0 96 96 0 8 0 ffsino 272 31661 0 30144 102 0 102 102 0 8 0 nchpl 144 63008 0 61387 63 0 63 63 0 8 0 uvmvnodes 80 6959 0 0 143 0 143 143 0 8 0 vnodes 224 6959 0 0 410 0 410 410 0 8 0 namei 1024 212219 0 212219 9 8 1 2 0 8 1 percpumem 16 262 0 220 1 0 1 1 0 8 0 vcpupl 2048 261 0 0 33 0 33 33 0 8 0 vmpool 560 291 0 30 20 1 19 19 0 8 0 pfiaddrpl 120 82 0 66 3 2 1 1 0 8 0 scsiplug 72 15 0 15 6 6 0 1 0 8 0 scxspl 216 190424 0 190424 60 59 1 8 0 8 1 plimitpl 152 2615 0 2600 1 0 1 1 0 8 0 sigapl 424 22420 0 22376 11 5 6 8 0 8 0 futexpl 64 192109 0 192109 6 5 1 1 0 8 1 knotepl 120 579 0 0 7 0 7 7 0 8 0 kqueuepl 216 5450 0 5441 102 101 1 8 0 8 0 pipepl 336 5664 0 5636 165 162 3 11 0 8 0 fdescpl 496 22351 0 22323 7 3 4 5 0 8 0 filepl 152 174765 0 174523 311 296 15 25 0 8 4 lockfpl 104 4991 0 4989 11 10 1 2 0 8 0 lockfspl 48 1530 0 1528 1 0 1 1 0 8 0 sessionpl 144 80 0 63 1 0 1 1 0 8 0 pgrppl 48 112 0 95 1 0 1 1 0 8 0 ucredpl 96 22726 0 22713 1 0 1 1 0 8 0 zombiepl 144 22377 0 22374 2 1 1 1 0 8 0 processpl 1064 22420 0 22374 5 0 5 5 0 8 0 procpl 672 65182 0 65121 51 44 7 9 0 8 0 srpgc 96 70 0 70 14 14 0 1 0 8 0 sosppl 168 138 0 138 30 30 0 1 0 8 0 sockpl 480 65846 0 65817 1217 1197 20 41 0 8 16 mcl64k 65536 65 0 0 5 2 3 3 0 8 0 mcl16k 16384 33 0 0 4 1 3 3 0 8 0 mcl12k 12288 41 0 0 2 0 2 2 0 8 0 mcl9k 9216 50 0 0 3 1 2 2 0 8 0 mcl8k 8192 41 0 0 4 1 3 3 0 8 0 mcl4k 4096 90 0 0 5 3 2 3 0 8 0 mcl2k2 2112 14 0 0 1 0 1 1 0 8 0 mcl2k 2048 460 0 0 27 4 23 27 0 8 0 mtagpl 96 1234 0 0 23 0 23 23 0 8 0 mbufpl 256 9702 0 0 554 1 553 553 0 8 0 bufpl 288 39734 0 33332 498 5 493 498 0 8 0 anonpl 24 6437128 0 6413218 474 318 156 172 0 186 0 amapchunkpl 152 688293 0 687383 172 134 38 47 0 158 0 amappl16 200 61009 0 60099 198 145 53 62 0 8 0 amappl15 192 4356 0 4350 1 0 1 1 0 8 0 amappl14 184 2283 0 2279 1 0 1 1 0 8 0 amappl13 176 3250 0 3247 1 0 1 1 0 8 0 amappl12 168 5610 0 5604 1 0 1 1 0 8 0 amappl11 160 2262 0 2246 1 0 1 1 0 8 0 amappl10 152 2095 0 2089 1 0 1 1 0 8 0 amappl9 144 3075 0 3068 1 0 1 1 0 8 0 amappl8 136 3276 0 3124 6 0 6 6 0 8 0 amappl7 128 1544 0 1528 1 0 1 1 0 8 0 amappl6 120 3089 0 3052 3 1 2 2 0 8 0 amappl5 112 21274 0 21251 1 0 1 1 0 8 0 amappl4 104 6383 0 6352 2 0 2 2 0 8 0 amappl3 96 7598 0 7579 1 0 1 1 0 8 0 amappl2 88 6322 0 6251 3 1 2 3 0 8 0 amappl1 80 404018 0 403430 19 5 14 19 0 8 0 amappl 88 281761 0 281397 10 1 9 9 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 22642 0 22352 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 22642 0 22352 2 0 2 2 0 8 0 vmmpekpl 168 167952 0 167864 5 0 5 5 0 8 0 vmmpepl 168 2044605 0 2041062 488 318 170 180 0 357 2 vmsppl 368 22641 0 22351 29 2 27 27 0 8 0 rwobjpl 56 498076 0 488858 158 26 132 135 0 8 0 pdppl 4096 45291 0 44963 1078 748 330 331 0 8 2 pvpl 32 10737755 0 10713182 825 610 215 278 0 265 0 pmappl 248 22641 0 22351 21 2 19 19 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2936 0 1228 50 0 50 50 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(ffffffff825739a5) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff825e91ae,ffffffff82632dac,131,ffffffff825fdeb9) at __assert+0x25 sys/kern/subr_prf.c:161 tun_clone_destroy(ffff800000c02800) at tun_clone_destroy+0x278 sys/net/if_tun.c:305 if_clone_destroy(ffff80002e43eb80) at if_clone_destroy+0x132 sys/net/if.c:1218 soo_ioctl(fffffd8067289b58,80206979,ffff80002e43eb80,ffff800024c70fd0) at soo_ioctl+0x26c sys_ioctl(ffff800024c70fd0,ffff80002e43ec98,ffff80002e43ecf0) at sys_ioctl+0x4a2 syscall(ffff80002e43ed60) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e43ed60) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x55246f91590, count: -9 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+0x34 sys/dev/kcov.c:154 __mp_lock(ffffffff82a3d2a0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a3d2a0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800021135130,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd807ab78730) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd807ab78730) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9500) at reaper+0x18b sys/kern/kern_exit.c:462 end trace frame: 0x0, count: 6 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+0x34 sys/dev/kcov.c:154 __mp_lock(ffffffff82a3d2a0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a3d2a0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800021135130,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd807ab78730) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd807ab78730) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f9500) at reaper+0x18b sys/kern/kern_exit.c:462 end trace frame: 0x0, count: -9