panic: kernel diagnostic assertion "__mp_lock_held(&sched_lock, curcpu()) == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_lock.c", line 63 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *507744 61611 0 0x1800 0x4080080 0 syz-executor.5 177151 59196 0 0x12 0 1 sshd db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259a0ff) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613e2d,ffffffff8258219f,3f,ffffffff826493d4) 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(ffff8000212e67f0,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000212e67f0,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff80002478c660,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff80002478c660,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000212e67f0,ffffffff829a5750,120,ffffffff82596a6a,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(d2feb7b6d0,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000212e67f0,ffff80002478c7f0,ffff80002478c850) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff80002478c8c0) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002478c8c0) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3254fc6d0, 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/multicore/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(ffffffff8259a0ff) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613e2d,ffffffff8258219f,3f,ffffffff826493d4) 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(ffff8000212e67f0,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000212e67f0,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff80002478c660,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff80002478c660,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000212e67f0,ffffffff829a5750,120,ffffffff82596a6a,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(d2feb7b6d0,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000212e67f0,ffff80002478c7f0,ffff80002478c850) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff80002478c8c0) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002478c8c0) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3254fc6d0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002478c420 rbx 0xffffffff82984bb7 cpu_info_full_primary+0x2bb7 rdx 0 rcx 0 rax 0xffff8000212e67f0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8c25161a1baed923 r11 0xcb644fcc69c6471c r12 0xffffffff829849b8 cpu_info_full_primary+0x29b8 r13 0 r14 0 r15 0x1 rip 0xffffffff81b52d88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002478c410 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.5) pid=507744 stat=onproc flags process=1800 proc=4080080 pri=84, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff800021258a80,0xffff8000212e6aa0 process=0xffff8000fffe8440 user=0xffff800024787000, vmspace=0xfffffd806830b018 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 9393 254013 67118 0 2 0 syz-executor.2 28658 299172 26453 0 2 0 syz-executor.7 73849 171507 20245 0 3 0x80 nanoslp syz-executor.3 73849 383131 20245 0 3 0x4000080 fsleep syz-executor.3 81156 260598 81931 0 2 0 syz-executor.6 81156 395782 81931 0 3 0x4000080 fsleep syz-executor.6 58776 13511 99122 0 2 0 syz-executor.1 61611 271684 47669 0 3 0x3800 suspend syz-executor.5 *61611 507744 47669 0 7 0x4081880 syz-executor.5 61611 453046 47669 0 2 0x4081800 syz-executor.5 86813 471337 29607 0 3 0x80 nanoslp syz-executor.4 86813 338880 29607 0 3 0x4000080 fsleep syz-executor.4 86813 289613 29607 0 3 0x4000080 fsleep syz-executor.4 86813 434794 29607 0 3 0x4000080 fsleep syz-executor.4 26453 131282 95873 0 3 0x82 nanoslp syz-executor.7 71895 152103 0 0 3 0x14200 bored sosplice 20245 270639 95873 0 3 0x82 nanoslp syz-executor.3 67118 38274 95873 0 3 0x82 nanoslp syz-executor.2 29607 164150 95873 0 3 0x82 nanoslp syz-executor.4 81931 248791 95873 0 3 0x82 nanoslp syz-executor.6 47669 319633 95873 0 3 0x82 nanoslp syz-executor.5 99122 274186 95873 0 3 0x82 nanoslp syz-executor.1 33906 496821 95873 0 2 0x2 syz-executor.0 95873 272615 79989 0 3 0x82 thrsleep syz-fuzzer 95873 150297 79989 0 3 0x4000082 nanoslp syz-fuzzer 95873 242055 79989 0 3 0x4000082 thrsleep syz-fuzzer 95873 22580 79989 0 3 0x4000082 thrsleep syz-fuzzer 95873 157936 79989 0 3 0x4000082 thrsleep syz-fuzzer 95873 119648 79989 0 3 0x4000082 thrsleep syz-fuzzer 95873 457638 79989 0 3 0x4000082 thrsleep syz-fuzzer 95873 302030 79989 0 3 0x4000082 thrsleep syz-fuzzer 95873 11342 79989 0 3 0x4000082 thrsleep syz-fuzzer 95873 330028 79989 0 3 0x4000082 thrsleep syz-fuzzer 95873 225653 79989 0 2 0x4000002 syz-fuzzer 79989 378339 59196 0 3 0x10008a sigsusp ksh 59196 177151 3608 0 7 0x12 sshd 59346 18544 1 0 3 0x100083 ttyin getty 3608 474555 1 0 3 0x88 kqread sshd 80594 27285 91182 74 3 0x1100092 bpf pflogd 91182 238541 1 0 3 0x80 netio pflogd 30093 180891 98630 73 3 0x1100090 kqread syslogd 98630 54478 1 0 3 0x100082 netio syslogd 24937 199517 1 0 3 0x100080 kqread resolvd 14837 53908 53969 77 3 0x100092 kqread dhcpleased 65566 312901 53969 77 3 0x100092 kqread dhcpleased 53969 178042 1 0 3 0x80 kqread dhcpleased 59486 188656 0 0 3 0x14200 bored smr 40106 314651 0 0 2 0x14200 zerothread 57999 47264 0 0 3 0x14200 aiodoned aiodoned 7828 82234 0 0 3 0x14200 syncer update 69221 304575 0 0 3 0x14200 cleaner cleaner 64564 147812 0 0 3 0x14200 reaper reaper 79248 4106 0 0 3 0x14200 pgdaemon pagedaemon 60201 29453 0 0 3 0x14200 bored viomb 74030 449140 0 0 3 0x40014200 acpi0 acpi0 66924 224814 0 0 3 0x40014200 idle1 28199 252478 0 0 3 0x14200 bored softnet 98492 170876 0 0 3 0x14200 bored softnet 13304 69558 0 0 3 0x14200 bored softnet 92163 464373 0 0 3 0x14200 bored softnet 8040 215544 0 0 3 0x14200 bored systqmp 61540 145532 0 0 3 0x14200 bored systq 24276 119164 0 0 3 0x40014200 bored softclock 84381 153406 0 0 3 0x40014200 idle0 1 94150 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 (0xffffffff82b703d8) #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10186 6485K 7535K 78643K 29202 0 pcb 13 12K 14K 78643K 1758 0 rtable 160 9K 10K 78643K 1081 0 ifaddr 85 17K 18K 78643K 321 0 sysctl 3 1K 1K 78643K 3 0 counters 56 35K 36K 78643K 136 0 ioctlops 0 0K 8K 78643K 6118 0 iov 0 0K 24K 78643K 337 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1381 86K 86K 78643K 5409 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 24 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 252 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 81K 78643K 4351 0 sigio 0 0K 0K 78643K 23 0 proc 70 91K 128K 78643K 796 0 subproc 104 6K 6K 78643K 173 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 65 0 in_multi 59 4K 7K 78643K 240 0 ether_multi 1 0K 0K 78643K 28 0 mrt 1 0K 0K 78643K 336 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 2K 78643K 1006 0 pfkey data 0 0K 0K 78643K 4 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 350 397K 401K 78643K 27412 0 UVM aobj 36 2K 2K 78643K 39 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 83 0 NDP 13 0K 1K 78643K 80 0 temp 339 5138K 6162K 78643K 19321 0 kqueue 12 18K 24K 78643K 233 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 120 165 0 162 3 2 1 3 0 8 0 rtentry 112 338 0 276 4 0 4 4 0 8 0 unpcb 136 2005 0 1988 22 19 3 6 0 8 2 syncache 296 18 0 18 6 6 0 1 0 8 0 tcpqe 32 85 0 85 4 4 0 1 0 8 0 tcpcb 736 2031 0 2009 43 34 9 12 0 8 7 arp 120 34 0 24 1 0 1 1 0 8 0 inpcb 320 5448 0 5436 45 38 7 12 0 8 5 nd6 48 45 0 31 1 0 1 1 0 8 0 pkpcb 40 21 0 21 3 3 0 1 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 ppxss 1256 19 0 19 6 6 0 1 0 8 0 pfstscr 40 12 0 12 2 2 0 1 0 8 0 pffrag 232 27 0 27 2 2 0 1 0 482 0 pffrnode 88 27 0 27 2 2 0 1 0 8 0 pffrent 40 95 0 95 2 2 0 1 0 8 0 pfosfp 40 1432 0 1008 5 0 5 5 0 8 0 pfosfpen 112 1432 0 714 21 0 21 21 0 8 0 pfrktable 1344 26 0 17 1 0 1 1 0 8 0 pftag 88 24 0 22 5 4 1 1 0 8 0 pfstitem 24 67 0 65 1 0 1 1 0 8 0 pfstkey 120 79 0 77 2 1 1 2 0 8 0 pfstate 336 71 0 69 4 3 1 4 0 8 0 pfrule 1360 187 0 175 5 3 2 2 0 8 1 rttmr 136 133 0 133 5 5 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1705 0 1421 29 7 22 29 0 8 0 art_table 32 1707 0 1421 4 0 4 4 0 8 0 art_node 16 334 0 282 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 250 0 240 1 0 1 1 0 8 0 shmpl 112 36 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6615 0 5172 91 0 91 91 0 8 0 ffsino 272 6615 0 5172 97 0 97 97 0 8 0 nchpl 144 12156 0 10515 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 40445 0 40445 2 1 1 2 0 8 1 percpumem 16 80 0 40 1 0 1 1 0 8 0 vcpupl 2048 87 0 0 11 0 11 11 0 8 0 vmpool 560 94 0 7 7 0 7 7 0 8 0 pfiaddrpl 120 12 0 4 1 0 1 1 0 8 0 kstatmem 264 106 0 80 3 1 2 3 0 8 0 scxspl 216 34512 0 34512 13 12 1 8 0 8 1 plimitpl 152 395 0 379 1 0 1 1 0 8 0 sigapl 424 4649 0 4601 7 1 6 6 0 8 0 futexpl 64 40692 0 40686 1 0 1 1 0 8 0 knotepl 120 608 0 0 17 0 17 17 0 8 0 kqueuepl 224 777 0 769 20 19 1 5 0 8 0 pipepl 336 772 0 744 19 16 3 8 0 8 0 fdescpl 496 4631 0 4601 5 1 4 5 0 8 0 filepl 152 27867 0 27625 49 34 15 18 0 8 5 lockfpl 104 785 0 783 2 1 1 2 0 8 0 lockfspl 48 323 0 321 1 0 1 1 0 8 0 sessionpl 144 29 0 12 1 0 1 1 0 8 0 pgrppl 48 40 0 23 1 0 1 1 0 8 0 ucredpl 104 2819 0 2804 1 0 1 1 0 8 0 zombiepl 144 4601 0 4601 1 0 1 1 0 8 1 processpl 1064 4649 0 4601 4 0 4 4 0 8 0 procpl 672 12884 0 12819 14 7 7 8 0 8 1 srpgc 96 22 0 22 5 5 0 1 0 8 0 sosppl 168 14 0 13 2 1 1 1 0 8 0 sockpl 480 7640 0 7608 85 72 13 25 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 11 0 0 2 0 2 2 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 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 364 0 0 45 0 45 45 0 8 0 mtagpl 96 1559 0 0 38 0 38 38 0 8 0 mbufpl 256 1833 0 0 111 0 111 111 0 8 0 bufpl 288 8866 0 2534 453 0 453 453 0 8 0 anonpl 24 881579 0 866205 168 54 114 130 0 186 0 amapchunkpl 152 76996 0 76283 40 8 32 34 0 158 0 amappl16 200 12731 0 12184 78 38 40 42 0 8 8 amappl15 192 2451 0 2444 1 0 1 1 0 8 0 amappl14 184 325 0 325 2 2 0 1 0 8 0 amappl13 176 115 0 113 1 0 1 1 0 8 0 amappl12 168 38 0 31 1 0 1 1 0 8 0 amappl11 160 1083 0 1059 2 0 2 2 0 8 0 amappl10 152 587 0 580 1 0 1 1 0 8 0 amappl9 144 516 0 513 1 0 1 1 0 8 0 amappl8 136 933 0 852 3 0 3 3 0 8 0 amappl7 128 334 0 320 1 0 1 1 0 8 0 amappl6 120 296 0 274 2 1 1 2 0 8 0 amappl5 112 4526 0 4504 1 0 1 1 0 8 0 amappl4 104 2328 0 2293 3 2 1 2 0 8 0 amappl3 96 13492 0 13446 2 0 2 2 0 8 0 amappl2 88 5074 0 5011 3 1 2 3 0 8 0 amappl1 80 112154 0 111513 20 5 15 20 0 8 0 amappl 88 26715 0 26514 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 38 0 3 1 0 1 1 0 8 0 uaddrrnd 24 4725 0 4608 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4725 0 4608 1 0 1 1 0 8 0 vmmpekpl 168 37250 0 37188 4 0 4 4 0 8 0 vmmpepl 168 446862 0 444088 201 51 150 153 0 357 23 vmsppl 368 4724 0 4608 11 0 11 11 0 8 0 rwobjpl 56 118720 0 111157 119 8 111 112 0 8 2 pdppl 4096 9457 0 9303 297 141 156 156 0 8 2 pvpl 32 1758176 0 1738320 313 127 186 250 0 265 4 pmappl 248 4724 0 4608 8 0 8 8 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1244 0 214 30 0 30 30 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(ffffffff8259a0ff) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff82613e2d,ffffffff8258219f,3f,ffffffff826493d4) 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(ffff8000212e67f0,1,c) at single_thread_check_locked+0x1f6 sys/kern/kern_sig.c:2037 single_thread_check(ffff8000212e67f0,1) at single_thread_check+0x4b sys/kern/kern_sig.c:2057 sleep_finish(ffff80002478c660,1) at sleep_finish+0x75 sleep_signal_check sys/kern/kern_synch.c:464 [inline] sleep_finish(ffff80002478c660,1) at sleep_finish+0x75 sys/kern/kern_synch.c:400 rwsleep(ffff8000212e67f0,ffffffff829a5750,120,ffffffff82596a6a,0) at rwsleep+0xd5 sys/kern/kern_synch.c:314 futex_wait(d2feb7b6d0,1,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:260 sys_futex(ffff8000212e67f0,ffff80002478c7f0,ffff80002478c850) at sys_futex+0xf8 sys/kern/sys_futex.c:111 syscall(ffff80002478c8c0) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002478c8c0) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd3254fc6d0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020dd8ff0) 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 __mp_lock(ffffffff82b701d0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b701d0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 wakeup_n(ffff80000002d000,1) at wakeup_n+0x37 task_add(ffff80000002d000,ffff8000001a0648) at task_add+0xc8 sys/kern/kern_task.c:372 if_enqueue_ifq(ffff8000001a02a8,fffffd8065646600) at if_enqueue_ifq+0xa3 sys/net/if.c:732 ether_output(ffff8000001a02a8,fffffd8065646600,ffff8000006c8770,fffffd807675d230) at ether_output+0xb7 sys/net/if_ethersubr.c:363 ip_output(fffffd8065646600,0,fffffd806f6671b8,800,0,fffffd806f667140,231dff0e70007ed1) at ip_output+0x106b sys/netinet/ip_output.c:468 tcp_output(ffff800000bcf000) at tcp_output+0x247d sys/netinet/tcp_output.c:1046 tcp_usrreq(fffffd806f138968,9,fffffd8067838000,0,0,ffff8000ffff7cf0) at tcp_usrreq+0x43f sosend(fffffd806f138968,0,ffff80002126a6f8,0,0,80) at sosend+0x61b sys/kern/uipc_socket.c:585 dofilewritev(ffff8000ffff7cf0,4,ffff80002126a6f8,0,ffff80002126a7f0) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_write(ffff8000ffff7cf0,ffff80002126a790,ffff80002126a7f0) at sys_write+0x83 sys/kern/sys_generic.c:301 end trace frame: 0xffff80002126a850, count: 0 ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) 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 __mp_lock(ffffffff82b701d0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b701d0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 wakeup_n(ffff80000002d000,1) at wakeup_n+0x37 task_add(ffff80000002d000,ffff8000001a0648) at task_add+0xc8 sys/kern/kern_task.c:372 if_enqueue_ifq(ffff8000001a02a8,fffffd8065646600) at if_enqueue_ifq+0xa3 sys/net/if.c:732 ether_output(ffff8000001a02a8,fffffd8065646600,ffff8000006c8770,fffffd807675d230) at ether_output+0xb7 sys/net/if_ethersubr.c:363 ip_output(fffffd8065646600,0,fffffd806f6671b8,800,0,fffffd806f667140,231dff0e70007ed1) at ip_output+0x106b sys/netinet/ip_output.c:468 tcp_output(ffff800000bcf000) at tcp_output+0x247d sys/netinet/tcp_output.c:1046 tcp_usrreq(fffffd806f138968,9,fffffd8067838000,0,0,ffff8000ffff7cf0) at tcp_usrreq+0x43f sosend(fffffd806f138968,0,ffff80002126a6f8,0,0,80) at sosend+0x61b sys/kern/uipc_socket.c:585 dofilewritev(ffff8000ffff7cf0,4,ffff80002126a6f8,0,ffff80002126a7f0) at dofilewritev+0x19c sys/kern/sys_generic.c:381 sys_write(ffff8000ffff7cf0,ffff80002126a790,ffff80002126a7f0) at sys_write+0x83 sys/kern/sys_generic.c:301 syscall(ffff80002126a860) at syscall+0x484 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002126a860) at syscall+0x484 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc33c0, count: -16