panic: kernel diagnostic assertion "!ISSET(p->p_flag, P_WSLEEP) || p->p_stat == SSTOP" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_sched.c", line 265 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 22628 69324 0 0x2 0x4000000 0K syz-fuzzer 427160 99790 74 0x1100012 0x480 1 pflogd db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82794ecf) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281726e,ffffffff8282143b,109,ffffffff828415b3) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffff800020d58ff0,ffff800021237b58,52) at setrunqueue+0x2e5 sys/kern/kern_sched.c:263 schedcpu(ffffffff82d49248) at schedcpu+0x28b sys/kern/sched_bsd.c:236 timeout_run(ffffffff82d49248) at timeout_run+0xd0 sys/kern/kern_timeout.c:640 softclock_process_tick_timeout(ffffffff82d49248,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:710 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0xc00015cf40, count: 5 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 "!ISSET(p->p_flag, P_WSLEEP) || p->p_stat == SSTOP" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_sched.c", line 265 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82794ecf) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281726e,ffffffff8282143b,109,ffffffff828415b3) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffff800020d58ff0,ffff800021237b58,52) at setrunqueue+0x2e5 sys/kern/kern_sched.c:263 schedcpu(ffffffff82d49248) at schedcpu+0x28b sys/kern/sched_bsd.c:236 timeout_run(ffffffff82d49248) at timeout_run+0xd0 sys/kern/kern_timeout.c:640 softclock_process_tick_timeout(ffffffff82d49248,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:710 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0xc00015cf40, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000212ece40 rbx 0xffffffff82c15b8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0xffff80002129f080 rax 0xffffffff82c14ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc1df0809a543ccaf r11 0x8af50ce6dba0bd9a r12 0xffffffff82c15990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff82302e8c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000212ece30 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-fuzzer) pid=22628 stat=onproc flags process=2 proc=4000000 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80002129fb60,0xffff80002129f8b8 process=0xffff800021220010 user=0xffff8000212e8000, vmspace=0xfffffd806e3a7580 estcpu=0, cpticks=102, pctcpu=0.0 user=0, sys=0, intr=102 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20472 63986 60593 0 2 0 syz-executor.0 99519 230661 90324 0 3 0x3800 suspend syz-executor.7 99519 470520 90324 0 2 0x40818a0 syz-executor.7 78140 465342 30372 0 2 0 syz-executor.3 78140 74851 30372 0 2 0x4000000 syz-executor.3 70407 118199 43344 0 2 0 syz-executor.4 70407 178312 43344 0 2 0x4000000 syz-executor.4 44360 177558 20137 0 2 0 syz-executor.6 44360 170321 20137 0 2 0x4000000 syz-executor.6 62922 253776 15891 0 2 0 syz-executor.1 62922 332230 15891 0 3 0x4000080 fsleep syz-executor.1 62922 475802 15891 0 3 0x4000080 fsleep syz-executor.1 15891 239603 69324 0 2 0x2 syz-executor.1 4936 97458 63339 0 3 0x100082 netio ndp 63339 270661 1 0 3 0x10008a sigsusp sh 90324 192315 69324 0 2 0x2 syz-executor.7 20137 417825 69324 0 3 0x82 nanoslp syz-executor.6 73741 171169 69324 0 2 0x2 syz-executor.5 43344 129909 69324 0 2 0x2 syz-executor.4 30372 289740 69324 0 2 0x2 syz-executor.3 1497 468102 69324 0 2 0x2 syz-executor.2 60593 394513 69324 0 2 0x2 syz-executor.0 69324 136424 9088 0 3 0x82 thrsleep syz-fuzzer 69324 23297 9088 0 3 0x4000082 nanoslp syz-fuzzer 69324 472907 9088 0 3 0x4000082 wait syz-fuzzer 69324 144094 9088 0 3 0x4000082 wait syz-fuzzer 69324 149925 9088 0 3 0x4000082 wait syz-fuzzer 69324 415670 9088 0 3 0x4000082 thrsleep syz-fuzzer 69324 284138 9088 0 3 0x4000082 wait syz-fuzzer 69324 244722 9088 0 3 0x4000082 wait syz-fuzzer 69324 457926 9088 0 3 0x4000082 wait syz-fuzzer 69324 242898 9088 0 3 0x4000082 wait syz-fuzzer 69324 182732 9088 0 3 0x4000082 thrsleep syz-fuzzer 69324 406091 9088 0 3 0x4000082 wait syz-fuzzer 69324 31877 9088 0 3 0x4000082 thrsleep syz-fuzzer *69324 22628 9088 0 7 0x4000002 syz-fuzzer 69324 76955 9088 0 3 0x4000082 thrsleep syz-fuzzer 69324 338034 9088 0 2 0x4000002 syz-fuzzer 9088 353984 21151 0 3 0x10008a sigsusp ksh 21151 142416 77362 0 3 0x9a kqread sshd 60196 473684 1 0 3 0x100083 ttyin getty 77362 209485 1 0 3 0x88 kqread sshd 99790 427160 69574 74 7 0x1100492 pflogd 69574 158935 1 0 3 0x80 netio pflogd 53438 266202 79961 73 3 0x1100090 kqread syslogd 79961 261027 1 0 3 0x100082 netio syslogd 13166 474921 1 0 3 0x100080 kqread resolvd 8483 108152 74521 77 3 0x100092 kqread dhcpleased 71371 384058 74521 77 3 0x100092 kqread dhcpleased 74521 101237 1 0 3 0x80 kqread dhcpleased 12861 167417 0 0 3 0x14200 bored smr 39845 344696 0 0 2 0x14200 zerothread 95005 106884 0 0 3 0x14200 aiodoned aiodoned 62265 59350 0 0 3 0x14200 syncer update 6752 237305 0 0 3 0x14200 cleaner cleaner 1814 282065 0 0 3 0x14200 reaper reaper 62031 439605 0 0 3 0x14200 pgdaemon pagedaemon 39934 217199 0 0 3 0x14200 bored viomb 5680 495186 0 0 3 0x40014200 acpi0 acpi0 84030 361314 0 0 3 0x40014200 idle1 70365 471735 0 0 3 0x14200 bored softnet3 50660 166189 0 0 3 0x14200 bored softnet2 71258 336150 0 0 3 0x14200 bored softnet1 90704 72150 0 0 3 0x14200 bored softnet0 65312 458085 0 0 3 0x14200 bored systqmp 65939 313133 0 0 3 0x14200 bored systq 67041 161507 0 0 3 0x40014200 bored softclock 81266 195872 0 0 3 0x40014200 idle0 1 41800 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 (0xffffffff82d49200) #0 witness_lock+0x447 #1 schedcpu+0x119 sys/kern/sched_bsd.c:219 #2 timeout_run+0xd0 sys/kern/kern_timeout.c:640 #3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #4 softclock+0x130 sys/kern/kern_timeout.c:710 #5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #6 Xsoftclock+0x27 shared mutex timeout r = 0 (0xffffffff82c01740) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:636 #2 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #3 softclock+0x130 sys/kern/kern_timeout.c:710 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 Process 69324 (syz-fuzzer) thread 0xffff80002129f080 (22628) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d73078) #0 witness_lock+0x447 #1 softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 #2 Xsoftclock+0x27 exclusive sched_lock &sched_lock r = 0 (0xffffffff82d49200) #0 witness_lock+0x447 #1 schedcpu+0x119 sys/kern/sched_bsd.c:219 #2 timeout_run+0xd0 sys/kern/kern_timeout.c:640 #3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #4 softclock+0x130 sys/kern/kern_timeout.c:710 #5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #6 Xsoftclock+0x27 shared mutex timeout r = 0 (0xffffffff82c01740) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:636 #2 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 #3 softclock+0x130 sys/kern/kern_timeout.c:710 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10180 6481K 6491K 78643K 12121 0 pcb 13 8K 8K 78643K 13 0 rtable 234 6K 6K 78643K 374 0 pf 32 9K 10K 78643K 45 0 ifaddr 45 15K 15K 78643K 51 0 ifgroup 55 2K 2K 78643K 59 0 counters 60 35K 35K 78643K 62 0 ioctlops 0 0K 4K 78643K 1878 0 iov 0 0K 0K 78643K 566 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1299 81K 81K 78643K 2262 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 18 65K 93K 78643K 2165 0 proc 67 91K 128K 78643K 554 0 subproc 117 7K 7K 78643K 117 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 99 7K 7K 78643K 110 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 1K 78643K 391 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 8 62K 64K 78643K 10 0 UVM amap 302 81K 82K 78643K 20309 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 12 0K 1K 78643K 31 0 temp 33 5858K 5922K 78643K 9384 0 kqueue 12 18K 18K 78643K 22 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 35 0 31 1 0 1 1 0 8 0 rtentry 112 121 0 11 4 0 4 4 0 8 0 unpcb 144 34 0 19 1 0 1 1 0 8 0 syncache 296 4 0 4 1 1 0 1 0 8 0 tcpqe 32 168 0 168 1 1 0 1 0 8 0 tcpcb 808 8 0 4 1 0 1 1 0 8 0 arp 120 20 0 2 1 0 1 1 0 8 0 inpcb 368 72 0 65 1 0 1 1 0 8 0 nd6 136 26 0 2 1 0 1 1 0 8 0 kcovpl 48 9 0 0 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 pfstitem 24 31 0 29 1 0 1 1 0 8 0 pfstkey 128 31 0 29 1 0 1 1 0 8 0 pfstate 376 31 0 29 3 2 1 3 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 256 495 0 43 29 0 29 29 0 8 0 art_table 32 496 0 43 4 0 4 4 0 8 0 art_node 16 120 0 20 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3515 0 2067 91 0 91 91 0 8 0 ffsino 272 3515 0 2067 97 0 97 97 0 8 0 nchpl 144 7306 0 5652 63 0 63 63 0 8 0 uvmvnodes 80 4598 0 0 94 0 94 94 0 8 0 vnodes 216 4598 0 0 256 0 256 256 0 8 0 namei 1024 21513 0 21513 4 3 1 2 0 8 1 percpumem 16 44 0 1 1 0 1 1 0 8 0 kstatmem 264 26 0 2 2 0 2 2 0 8 0 scxspl 216 18729 0 18729 13 12 1 8 0 8 1 plimitpl 152 86 0 68 1 0 1 1 0 8 0 sigapl 424 2474 0 2426 8 1 7 7 0 8 0 futexpl 64 21139 0 21136 2 1 1 1 0 8 0 knotepl 120 104 0 0 4 0 4 4 0 8 0 kqueuepl 216 18 0 10 1 0 1 1 0 8 0 pipepl 320 1339 0 1307 6 3 3 6 0 8 0 fdescpl 496 2457 0 2426 5 0 5 5 0 8 0 filepl 152 12217 0 11957 13 2 11 13 0 8 0 lockfpl 104 18 0 16 1 0 1 1 0 8 0 lockfspl 48 10 0 8 1 0 1 1 0 8 0 sessionpl 144 25 0 7 1 0 1 1 0 8 0 pgrppl 48 25 0 7 1 0 1 1 0 8 0 ucredpl 104 62 0 50 1 0 1 1 0 8 0 zombiepl 144 2426 0 2426 2 1 1 1 0 8 1 processpl 1072 2474 0 2426 4 0 4 4 0 8 0 procpl 696 4630 0 4561 9 2 7 8 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sockpl 488 141 0 115 4 0 4 4 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 20 0 0 3 0 3 3 0 8 0 mcl12k 12288 20 0 0 2 0 2 2 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 251 0 0 32 1 31 32 0 8 3 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 339 0 0 17 0 17 17 0 8 0 bufpl 288 6168 0 146 431 0 431 431 0 8 0 anonpl 24 331138 0 322890 76 25 51 57 0 186 0 amapchunkpl 152 64464 0 63709 41 10 31 33 0 158 1 amappl16 200 7220 0 7064 10 1 9 9 0 8 0 amappl15 192 12 0 11 1 0 1 1 0 8 0 amappl14 184 162 0 146 2 1 1 2 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 3144 0 3111 4 1 3 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 39 0 24 1 0 1 1 0 8 0 amappl9 144 179 0 178 2 1 1 2 0 8 0 amappl8 136 199 0 143 2 0 2 2 0 8 0 amappl7 128 106 0 88 1 0 1 1 0 8 0 amappl6 120 492 0 476 2 1 1 2 0 8 0 amappl5 112 176 0 166 1 0 1 1 0 8 0 amappl4 104 913 0 867 4 2 2 4 0 8 0 amappl3 96 13300 0 13212 4 1 3 3 0 8 0 amappl2 88 2743 0 2676 3 1 2 3 0 8 0 amappl1 80 16771 0 16192 23 9 14 23 0 8 0 amappl 88 19787 0 19584 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2457 0 2426 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2457 0 2426 1 0 1 1 0 8 0 vmmpekpl 168 22380 0 22316 4 0 4 4 0 8 0 vmmpepl 168 152553 0 150443 134 38 96 118 0 357 2 vmsppl 464 2456 0 2426 5 0 5 5 0 8 0 rwobjpl 56 44633 0 38769 90 7 83 83 0 8 0 pdppl 4096 4921 0 4852 221 150 71 83 0 8 2 pvpl 32 898658 0 884431 368 183 185 368 0 265 64 pmappl 248 2456 0 2426 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 943 0 157 23 0 23 23 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82794ecf) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8281726e,ffffffff8282143b,109,ffffffff828415b3) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffff800020d58ff0,ffff800021237b58,52) at setrunqueue+0x2e5 sys/kern/kern_sched.c:263 schedcpu(ffffffff82d49248) at schedcpu+0x28b sys/kern/sched_bsd.c:236 timeout_run(ffffffff82d49248) at timeout_run+0xd0 sys/kern/kern_timeout.c:640 softclock_process_tick_timeout(ffffffff82d49248,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:710 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0xc00015cf40, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d58ff0) 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 __mp_lock(ffffffff82d72e70) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d72e70) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82d72e70,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x440 sys/kern/sched_bsd.c:420 sleep_finish(33,1) at sleep_finish+0x184 sys/kern/kern_synch.c:411 msleep(ffff800000ce0000,ffff800000ce0008,11a,ffffffff8282f418,33) at msleep+0xea sys/kern/kern_synch.c:249 bpfread(21700,ffff800021203ac8,0) at bpfread+0x232 spec_read(ffff800021203920) at spec_read+0xfa sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e409b50,ffff800021203ac8,0,fffffd807f7d77b8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 vn_read(fffffd806e4c3010,ffff800021203ac8,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369 dofilereadv(ffff800021217320,4,ffff800021203ac8,0,ffff800021203bb0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247 sys_read(ffff800021217320,ffff800021203b60,ffff800021203bb0) at sys_read+0x87 sys/kern/sys_generic.c:167 end trace frame: 0xffff800021203c20, count: 0 ddb{1}> trace x86_ipi_db(ffff800020d58ff0) 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 __mp_lock(ffffffff82d72e70) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d72e70) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82d72e70,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x440 sys/kern/sched_bsd.c:420 sleep_finish(33,1) at sleep_finish+0x184 sys/kern/kern_synch.c:411 msleep(ffff800000ce0000,ffff800000ce0008,11a,ffffffff8282f418,33) at msleep+0xea sys/kern/kern_synch.c:249 bpfread(21700,ffff800021203ac8,0) at bpfread+0x232 spec_read(ffff800021203920) at spec_read+0xfa sys/kern/spec_vnops.c:215 VOP_READ(fffffd806e409b50,ffff800021203ac8,0,fffffd807f7d77b8) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 vn_read(fffffd806e4c3010,ffff800021203ac8,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369 dofilereadv(ffff800021217320,4,ffff800021203ac8,0,ffff800021203bb0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247 sys_read(ffff800021217320,ffff800021203b60,ffff800021203bb0) at sys_read+0x87 sys/kern/sys_generic.c:167 syscall(ffff800021203c30) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800021203c30) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7202dec6f820, count: -16