panic: kernel diagnostic assertion "rn != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pipex.c", line 459 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *448569 23897 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83451c58) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8348ceed,ffffffff834a9bd5,1cb,ffffffff83448634) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c404008) at pipex_unlink_session_locked+0x429 pipex_destroy_all_sessions(ffff8000015f8000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000015f8000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,1,2000,ffff80002a261770) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c3f33d0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ee63d90,1,fffffd80097fd138,ffff80002a261770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c7af220,ffff80002a261770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c7af220,ffff80002a261770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c7af220,ffff80002a261770) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806c7af220,ffff80002a261770) at closef+0x192 sys/kern/kern_descrip.c:1265 syscall(ffff80003c3f3630) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3f3630) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2253da67940, count: 2 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 "rn != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pipex.c", line 459 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83451c58) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8348ceed,ffffffff834a9bd5,1cb,ffffffff83448634) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c404008) at pipex_unlink_session_locked+0x429 pipex_destroy_all_sessions(ffff8000015f8000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000015f8000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,1,2000,ffff80002a261770) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c3f33d0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ee63d90,1,fffffd80097fd138,ffff80002a261770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c7af220,ffff80002a261770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c7af220,ffff80002a261770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c7af220,ffff80002a261770) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806c7af220,ffff80002a261770) at closef+0x192 sys/kern/kern_descrip.c:1265 syscall(ffff80003c3f3630) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3f3630) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2253da67940, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c3f31a0 rbx 0xffffffff8390fe07 cpu_info_full_primary+0x2e07 rdx 0xffff80000002a740 rcx 0xffff80002a261770 rax 0xffffffff8390eff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd8026cbd00fc9ebc r11 0x9ec4263a233659a6 r12 0xffffffff8390fc08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff81648fe5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c3f3190 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=448569 pid=23897 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe3cb0,0xffff8000fffe9788 process=0xffff8000fffe61d0 user=0xffff80003c3ee000, vmspace=0xfffffd800b063000 estcpu=33, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 30363 466845 57223 0 2 0 syz-executor 30363 284085 57223 0 3 0x4000080 fsleep syz-executor 94053 305285 58293 0 2 0 syz-executor 94053 156894 58293 0 3 0x4000080 fsleep syz-executor 23897 263126 7877 0 3 0x80 nanoslp syz-executor *23897 448569 7877 0 7 0x4000000 syz-executor 98273 157918 21052 0 2 0 syz-executor 98273 470416 21052 0 3 0x4000080 lockf syz-executor 98273 24296 21052 0 3 0x4000080 fsleep syz-executor 79304 331505 40444 0 2 0 syz-executor 79304 182224 40444 0 3 0x4000080 fsleep syz-executor 79304 183298 40444 0 3 0x4000080 ttyout syz-executor 79304 121556 40444 0 3 0x4000080 fsleep syz-executor 88337 23518 37082 0 3 0x3000 suspend syz-executor 88337 178901 37082 0 3 0x4081000 biowait syz-executor 88337 351041 37082 0 3 0x4081000 inode syz-executor 88337 430025 37082 0 3 0x4081000 inode syz-executor 58293 150425 92507 0 3 0x82 nanoslp syz-executor 73636 352655 0 0 3 0x14200 acct acct 21337 468661 92507 0 3 0x82 piperd syz-executor 62050 339033 92507 0 2 0x10000082 syz-executor 40444 59216 92507 0 3 0x82 nanoslp syz-executor 37082 472513 92507 0 2 0x2 syz-executor 57223 134723 92507 0 3 0x82 nanoslp syz-executor 21052 15095 92507 0 2 0x2 syz-executor 7877 417046 92507 0 3 0x82 nanoslp syz-executor 92507 506442 55144 0 2 0x2 syz-executor 55144 144629 969 0 3 0x10008a sigsusp ksh 969 158253 18702 0 3 0x98 kqread sshd-session 18702 413128 31711 0 3 0x92 kqread sshd-session 2743 275484 1 0 3 0x100083 ttyopn getty 31711 418767 1 0 3 0x88 kqread sshd 79077 473354 88543 74 3 0x1100092 bpf pflogd 88543 188285 1 0 3 0x80 sbwait pflogd 9354 41682 80806 73 3 0x1100090 kqread syslogd 80806 342812 1 0 3 0x100082 sbwait syslogd 96578 472956 1 0 3 0x100080 kqread resolvd 27536 371472 18049 77 2 0x100012 dhcpleased 42923 426047 18049 77 3 0x100092 kqread dhcpleased 18049 364619 1 0 3 0x80 kqread dhcpleased 31750 431735 0 0 3 0x14200 bored smr 56070 359907 0 0 2 0x14200 zerothread 25613 259468 0 0 3 0x14200 aiodoned aiodoned 77980 286182 0 0 3 0x14200 syncer update 38181 159708 0 0 3 0x14200 cleaner cleaner 28801 229769 0 0 3 0x14200 reaper reaper 62913 311476 0 0 3 0x14200 pgdaemon pagedaemon 55444 131910 0 0 3 0x14200 bored viomb 17661 398732 0 0 3 0x40014200 acpi0 acpi0 59207 273707 0 0 7 0x40014200 idle1 48755 371308 0 0 3 0x14200 bored softnet1 47835 456030 0 0 3 0x14200 bored softnet0 21671 515116 0 0 3 0x14200 bored systqmp 91809 27238 0 0 3 0x14200 bored systq 26162 279391 0 0 3 0x14200 tmoslp softclockmp 55894 198589 0 0 3 0x40014200 tmoslp softclock 29145 444517 0 0 3 0x40014200 idle0 1 115852 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/net/pipex.c:78 r = 0 (0xffffffff83956270) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pipex_destroy_all_sessions+0x2f sys/net/pipex.c:144 #3 pppacclose+0x16f sys/net/if_pppx.c:1335 #4 spec_close+0x417 sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #7 fdrop+0x121 sys/kern/kern_descrip.c:1281 #8 closef+0x192 sys/kern/kern_descrip.c:1265 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #10 Xsyscall+0x128 Process 23897 (syz-executor) thread 0xffff80002a261770 (448569) Process 88337 (syz-executor) thread 0xffff8000fffe87e8 (178901) Process 88337 (syz-executor) thread 0xffff80002a2607e0 (430025) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11108 12162K 13139K 166960K 14286 0 pcb 18 16K 18K 166960K 454 0 rtable 191 9K 11K 166960K 707 0 pf 31 16K 85K 166960K 164 0 ifaddr 33 6K 8K 166960K 118 0 ifgroup 48 2K 2K 166960K 194 0 sysctl 4 1K 9K 166960K 15 0 counters 70 36K 38K 166960K 226 0 ioctlops 0 0K 8K 166960K 1927 0 iov 0 0K 24K 166960K 173 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1453 91K 92K 166960K 3032 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 190 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 1327 0 sigio 0 0K 0K 166960K 21 0 proc 72 115K 164K 166960K 705 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 180 0 in_multi 66 4K 7K 166960K 167 0 ether_multi 1 0K 0K 166960K 15 0 mrt 0 0K 0K 166960K 27 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 555 0 fusefs mount 1 32K 32K 166960K 1 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 237 167K 198K 166960K 14323 0 UVM aobj 68 14K 14K 166960K 71 0 pinsyscall 41 82K 102K 166960K 2579 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 110 0 NDP 11 0K 1K 166960K 85 0 temp 79 9088K 9160K 166960K 44119 0 kqueue 14 22K 30K 166960K 257 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 223 0 220 4 3 1 3 0 8 0 rtentry 176 163 0 91 6 0 6 6 0 8 0 unpcb 144 940 0 923 9 3 6 6 0 8 5 syncache 336 9 0 9 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 268 0 261 3 1 2 2 0 8 1 arp 136 28 0 15 1 0 1 1 0 8 0 inpcb 328 1444 0 1434 20 10 10 10 0 8 8 nd6 152 34 0 16 2 0 2 2 0 8 0 pkpcb 40 10 0 10 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 1 1 1 0 8 1 ppxss 1192 67 0 66 2 1 1 1 0 8 0 pppxif 1504 4 0 4 3 3 0 1 0 8 0 pffrag 232 11 0 6 1 0 1 1 0 482 0 pffrnode 88 11 0 6 1 0 1 1 0 8 0 pffrent 40 19 0 14 1 0 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 pfrktable 1344 6 0 6 3 2 1 1 0 8 1 pfstitem 24 108 0 25 1 0 1 1 0 8 0 pfstkey 128 108 0 25 3 0 3 3 0 8 0 pfstate 448 108 0 25 10 0 10 10 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 639 0 337 31 3 28 31 0 8 5 art_table 40 643 0 337 5 0 5 5 0 8 0 art_node 32 162 0 97 1 0 1 1 0 8 0 sysvmsgpl 40 23 0 15 1 0 1 1 0 8 0 semupl 112 3 0 3 2 1 1 1 0 8 1 semapl 112 186 0 176 1 0 1 1 0 8 0 shmpl 112 62 0 3 2 0 2 2 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 4270 0 2809 93 0 93 93 0 8 0 ffsino 296 4270 0 2809 114 0 114 114 0 8 0 nchpl 144 6121 0 4408 64 0 64 64 0 8 0 rtmask 32 10 0 9 3 2 1 1 0 8 0 vnodes 216 5220 0 0 290 0 290 290 0 8 0 namei 1024 22475 0 22474 5 4 1 2 0 8 0 percpumem 16 128 0 78 1 0 1 1 0 8 0 vcpupl 3968 6 0 0 1 0 1 1 0 8 0 vmpool 848 6 0 0 1 0 1 1 0 8 0 kstatmem 264 134 0 108 4 1 3 3 0 8 0 scsiplug 72 6 0 6 3 2 1 1 0 8 1 scxspl 216 34168 0 34167 16 14 2 8 1 8 1 plimitpl 152 381 0 360 1 0 1 1 0 8 0 sigapl 424 1651 0 1603 7 1 6 7 0 8 0 knotepl 120 822 0 0 25 0 25 25 0 8 0 kqueuepl 224 490 0 479 6 3 3 3 0 8 2 pipepl 344 355 0 328 15 9 6 9 0 8 3 fdescpl 528 1632 0 1602 3 0 3 3 0 8 0 filepl 160 11890 0 11664 29 11 18 18 0 8 7 lockfpl 104 757 0 752 3 1 2 2 0 8 1 lockfspl 48 325 0 321 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 91 0 74 1 0 1 1 0 8 0 ucredpl 104 2398 0 2385 1 0 1 1 0 8 0 zombiepl 144 1776 0 1774 2 1 1 1 0 8 0 processpl 1232 1651 0 1603 5 1 4 5 0 8 0 procpl 664 3691 0 3632 6 0 6 6 0 8 0 sosppl 176 8 0 8 3 2 1 1 0 8 1 sockpl 752 2662 0 2631 29 15 14 17 0 8 9 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 38 0 0 4 0 4 4 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 2072 0 0 129 0 129 129 0 8 0 bufpl 280 13566 0 7436 439 0 439 439 0 8 1 anonpl 32 12123 0 0 98 0 98 98 0 246 0 amapchunkpl 152 48251 0 47743 43 13 30 30 0 158 5 amappl16 200 5913 0 5747 48 20 28 28 0 8 12 amappl15 192 21 0 20 1 0 1 1 0 8 0 amappl14 184 458 0 457 1 0 1 1 0 8 0 amappl13 176 139 0 127 1 0 1 1 0 8 0 amappl12 168 1898 0 1869 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 83 0 69 1 0 1 1 0 8 0 amappl9 144 260 0 260 1 1 0 1 0 8 0 amappl8 136 105 0 103 1 0 1 1 0 8 0 amappl7 128 190 0 177 1 0 1 1 0 8 0 amappl6 120 187 0 184 1 0 1 1 0 8 0 amappl5 112 114 0 103 1 0 1 1 0 8 0 amappl4 104 331 0 309 1 0 1 1 0 8 0 amappl3 96 9695 0 9583 5 1 4 4 0 8 0 amappl2 88 625 0 565 2 0 2 2 0 8 0 amappl1 80 17307 0 16698 24 7 17 17 0 8 3 amappl 88 13294 0 13129 5 0 5 5 0 92 0 uvmvnodes 80 153 0 0 4 0 4 4 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 3 3 0 1 0 8 0 dma128 128 255 0 255 3 2 1 1 0 8 1 dma64 64 9 0 9 3 3 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 70 0 3 2 0 2 2 0 8 0 uaddrrnd 24 1632 0 1602 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1632 0 1602 1 0 1 1 0 8 0 vmmpekpl 168 15368 0 15326 3 0 3 3 0 8 0 vmmpepl 168 113677 0 111649 126 17 109 109 0 357 5 vmsppl 488 1631 0 1602 7 2 5 5 0 8 1 rwobjpl 80 33529 0 32232 42 7 35 35 0 8 2 pdppl 4096 3283 0 3210 119 40 79 83 0 8 6 pvpl 32 20551 0 0 167 1 166 166 0 265 0 pmappl 256 1637 0 1602 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 435 0 57 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83451c58) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8348ceed,ffffffff834a9bd5,1cb,ffffffff83448634) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c404008) at pipex_unlink_session_locked+0x429 pipex_destroy_all_sessions(ffff8000015f8000) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff8000015f8000) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,1,2000,ffff80002a261770) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80003c3f33d0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805ee63d90,1,fffffd80097fd138,ffff80002a261770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c7af220,ffff80002a261770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c7af220,ffff80002a261770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c7af220,ffff80002a261770) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806c7af220,ffff80002a261770) at closef+0x192 sys/kern/kern_descrip.c:1265 syscall(ffff80003c3f3630) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3f3630) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2253da67940, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299bdff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299bdff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299bdff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299bdff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5