panic: kernel diagnostic assertion "ifp != NULL" failed: file "/syzkaller/managers/setuid/kernel/sys/netinet/if_ether.c", line 759 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 4062 9334 73 0x1100010 0 1 syslogd *314201 13426 0 0x14000 0x200 0 softclockmp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a64e7) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82827159,ffffffff828734a7,2f7,ffffffff827765b3) at __assert+0x29 sys/kern/subr_prf.c:157 arptfree(fffffd8073824380) at arptfree+0x132 sys/netinet/if_ether.c:759 arptimer(ffffffff82c8e9e0) at arptimer+0x88 sys/netinet/if_ether.c:135 timeout_run(ffffffff82c8e9e0) at timeout_run+0xd0 sys/kern/kern_timeout.c:665 softclock_thread_mp(ffff8000211687f8) at softclock_thread_mp+0xc4 sys/kern/kern_timeout.c:833 end trace frame: 0x0, count: 8 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 "ifp != NULL" failed: file "/syzkaller/managers/setuid/kernel/sys/netinet/if_ether.c", line 759 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a64e7) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82827159,ffffffff828734a7,2f7,ffffffff827765b3) at __assert+0x29 sys/kern/subr_prf.c:157 arptfree(fffffd8073824380) at arptfree+0x132 sys/netinet/if_ether.c:759 arptimer(ffffffff82c8e9e0) at arptimer+0x88 sys/netinet/if_ether.c:135 timeout_run(ffffffff82c8e9e0) at timeout_run+0xd0 sys/kern/kern_timeout.c:665 softclock_thread_mp(ffff8000211687f8) at softclock_thread_mp+0xc4 sys/kern/kern_timeout.c:833 end trace frame: 0x0, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002117b220 rbx 0xffffffff82c1dba7 cpu_info_full_primary+0x2ba7 rdx 0 rcx 0xffff8000211687f8 rax 0xffffffff82c1cff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7af79c612cefd374 r11 0x8dac1e2398d1ea28 r12 0xffffffff82c1d9a8 cpu_info_full_primary+0x29a8 r13 0 r14 0 r15 0x1 rip 0xffffffff8212475c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002117b210 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (softclockmp) tid=314201 pid=13426 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=50, usrpri=51, slppri=0, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff800021168ff0,0xffff800021168560 process=0xffff8000ffffdd50 user=0xffff800021176000, vmspace=0xffffffff82c8e6a8 estcpu=1, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13178 383472 89956 32767 2 0x10 syz-executor.7 13178 449564 89956 32767 2 0x4000010 syz-executor.7 13178 184609 89956 32767 3 0x4000010 inode syz-executor.7 13178 466031 89956 32767 3 0x4000090 fsleep syz-executor.7 26910 435638 53456 32767 2 0x10 syz-executor.2 26910 313386 53456 32767 3 0x4000090 pipewr syz-executor.2 26910 79503 53456 32767 3 0x4000090 fsleep syz-executor.2 65071 335865 23856 0 3 0x82 wait syz-executor.0 53456 441157 96704 32767 2 0x490 syz-executor.2 96704 57950 23856 0 3 0x82 wait syz-executor.2 50619 171277 59729 32767 2 0x490 syz-executor.5 59729 494758 23856 0 3 0x82 wait syz-executor.5 23858 184 0 0 3 0x14200 bored sosplice 89956 324253 85117 32767 2 0x490 syz-executor.7 66702 256799 40055 32767 2 0x490 syz-executor.6 85117 505471 23856 0 3 0x82 wait syz-executor.7 40055 276034 23856 0 3 0x82 wait syz-executor.6 49814 53515 73329 32767 2 0x490 syz-executor.4 2664 60600 66030 32767 2 0x490 syz-executor.3 66030 273632 23856 0 3 0x82 wait syz-executor.3 73329 255011 23856 0 3 0x82 wait syz-executor.4 96226 218056 40766 32767 2 0x490 syz-executor.1 40766 520339 23856 0 3 0x82 wait syz-executor.1 23856 368440 21374 0 3 0x2000082 thrsleep syz-fuzzer 23856 20953 21374 0 3 0x6000082 nanoslp syz-fuzzer 23856 13429 21374 0 3 0x6000082 wait syz-fuzzer 23856 42846 21374 0 3 0x6000082 wait syz-fuzzer 23856 349389 21374 0 3 0x6000082 wait syz-fuzzer 23856 310790 21374 0 3 0x6000082 thrsleep syz-fuzzer 23856 136735 21374 0 3 0x6000082 wait syz-fuzzer 23856 357921 21374 0 3 0x6000082 wait syz-fuzzer 23856 120201 21374 0 3 0x6000082 thrsleep syz-fuzzer 23856 347074 21374 0 3 0x6000082 thrsleep syz-fuzzer 23856 116062 21374 0 3 0x6000082 wait syz-fuzzer 23856 121250 21374 0 3 0x6000082 wait syz-fuzzer 23856 362929 21374 0 3 0x6000082 kqread syz-fuzzer 23856 7061 21374 0 3 0x6000082 thrsleep syz-fuzzer 23856 358845 21374 0 3 0x6000082 wait syz-fuzzer 23856 350261 21374 0 3 0x6000082 thrsleep syz-fuzzer 21374 248659 59629 0 3 0x10008a sigsusp ksh 59629 305750 83851 0 3 0x9a kqread sshd 61991 83024 1 0 3 0x100083 ttyin getty 83851 137699 1 0 3 0x88 kqread sshd 9334 4062 68922 73 7 0x1100010 syslogd 68922 370927 1 0 3 0x100082 netio syslogd 35696 364932 1 0 3 0x100080 kqread resolvd 5690 447272 39610 77 3 0x100092 kqread dhcpleased 68520 35840 39610 77 3 0x100092 kqread dhcpleased 39610 463947 1 0 3 0x80 kqread dhcpleased 14885 507066 0 0 2 0x40014200 smr 75166 40148 0 0 2 0x14200 zerothread 28563 487817 0 0 3 0x14200 aiodoned aiodoned 1146 351354 0 0 3 0x14200 syncer update 5557 207720 0 0 3 0x14200 cleaner cleaner 24809 198876 0 0 2 0x14200 reaper 43249 366780 0 0 3 0x14200 pgdaemon pagedaemon 6588 150061 0 0 3 0x14200 bored viomb 21004 119287 0 0 3 0x40014200 acpi0 acpi0 93491 137910 0 0 3 0x40014200 idle1 74162 289635 0 0 3 0x14200 bored softnet3 97547 250262 0 0 3 0x14200 bored softnet2 96742 502527 0 0 3 0x14200 bored softnet1 78461 395730 0 0 2 0x14200 softnet0 74387 193071 0 0 3 0x14200 bored systqmp 64060 181782 0 0 3 0x14200 bored systq *13426 314201 0 0 7 0x14200 softclockmp 19012 288529 0 0 2 0x40014200 softclock 62727 369311 0 0 3 0x40014200 idle0 1 500124 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 13178 (syz-executor.7) thread 0xffff80002126aac0 (449564) exclusive rrwlock inode r = 0 (0xfffffd806814c1b8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vn_write+0x127 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x1a0 sys/kern/sys_generic.c:375 #7 sys_pwritev+0xb6 sys/kern/vfs_syscalls.c:3356 #8 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 9334 (syslogd) thread 0xffff8000211f7aa0 (4062) exclusive rrwlock inode r = 0 (0xfffffd806e6cf810) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0xf9 sys/kern/vfs_syscalls.c:2896 #6 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #6 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #7 Xsyscall+0x128 Process 24809 (reaper) thread 0xffff8000211b2aa8 (198876) exclusive rwlock vmmaplk r = 0 (0xfffffd8073b6c4a0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvm_map_teardown+0xb3 sys/uvm/uvm_map.c:2533 #4 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503 #5 reaper+0x19a sys/kern/kern_exit.c:458 #6 proc_trampoline+0x10 Process 13426 (softclockmp) thread 0xffff8000211687f8 (314201) exclusive rwlock netlock r = 0 (0xffffffff82bf81a0) #0 witness_lock+0x447 #1 arptimer+0x26 sys/netinet/if_ether.c:132 #2 timeout_run+0xd0 sys/kern/kern_timeout.c:665 #3 softclock_thread_mp+0xc4 sys/kern/kern_timeout.c:833 #4 proc_trampoline+0x10 shared rwlock timeout r = 0 (0xffffffff82bc3200) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:661 #2 softclock_thread_mp+0xc4 sys/kern/kern_timeout.c:833 #3 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 6412K 6420K 78643K 11301 0 pcb 13 14K 18K 78643K 17 0 rtable 240 6K 7K 78643K 604 0 pf 29 8K 8K 78643K 37 0 ifaddr 44 15K 15K 78643K 62 0 ifgroup 50 2K 2K 78643K 66 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 68 0 ioctlops 0 0K 2K 78643K 43 0 iov 0 0K 16K 78643K 810 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 2447 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 9K 78643K 94 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 936 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 20 73K 117K 78643K 5148 0 sigio 1 0K 0K 78643K 342 0 proc 56 78K 103K 78643K 911 0 subproc 104 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 8691 0 in_multi 99 7K 7K 78643K 178 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 199 890K 890K 78643K 199 0 exec 0 0K 1K 78643K 1452 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 422 108K 108K 78643K 53392 0 UVM aobj 131 4K 4K 78643K 154 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 172 0 NDP 11 0K 2K 78643K 39 0 temp 74 5920K 6048K 78643K 16213 0 kqueue 12 18K 26K 78643K 424 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 120 228 0 225 2 1 1 2 0 8 0 rtentry 112 167 0 54 4 0 4 4 0 8 0 unpcb 144 3166 0 3151 28 27 1 6 0 8 0 syncache 304 104 0 104 11 11 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 226 0 226 9 9 0 1 0 8 0 tcpcb 808 6528 0 6522 80 72 8 23 0 8 6 arp 120 27 0 8 1 0 1 1 0 8 0 ipq 40 2 0 2 2 2 0 1 0 8 0 ipqe 40 9 0 9 2 2 0 1 0 8 0 inpcb 368 8134 0 8125 92 84 8 27 0 8 5 nd6 136 47 0 21 1 0 1 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 695 0 237 31 2 29 30 0 8 0 art_table 32 696 0 237 4 0 4 4 0 8 0 art_node 16 166 0 63 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 934 0 924 1 0 1 1 0 8 0 shmpl 112 151 0 23 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8385 0 6930 91 0 91 91 0 8 0 ffsino 272 8385 0 6930 97 0 97 97 0 8 0 nchpl 144 15140 0 13489 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 50365 0 50365 2 1 1 2 0 8 1 percpumem 16 47 0 4 1 0 1 1 0 8 0 kstatmem 264 30 0 8 2 0 2 2 0 8 0 scxspl 216 51470 0 51470 23 20 3 8 1 8 3 plimitpl 152 880 0 856 9 8 1 2 0 8 0 sigapl 424 5440 0 5385 7 0 7 7 0 8 0 futexpl 64 43234 0 43232 1 0 1 1 0 8 0 knotepl 120 440 0 0 11 0 11 11 0 8 0 kqueuepl 216 1100 0 1092 13 12 1 5 0 8 0 pipepl 320 1645 0 1615 36 32 4 8 0 8 1 fdescpl 496 5421 0 5390 7 1 6 6 0 8 0 filepl 152 36123 0 35883 59 45 14 20 0 8 4 lockfpl 104 1067 0 1065 2 1 1 2 0 8 0 lockfspl 48 332 0 330 1 0 1 1 0 8 0 sessionpl 144 27 0 11 1 0 1 1 0 8 0 pgrppl 48 119 0 103 1 0 1 1 0 8 0 ucredpl 104 5607 0 5589 1 0 1 1 0 8 0 zombiepl 144 5391 0 5385 1 0 1 1 0 8 0 processpl 1072 5440 0 5385 5 1 4 5 0 8 0 procpl 680 14870 0 14788 16 8 8 8 0 8 1 sosppl 168 105 0 105 5 4 1 1 0 8 1 sockpl 488 11737 0 11710 191 180 11 39 0 8 6 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 16 0 0 2 0 2 2 0 8 0 mcl9k 9216 24 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 38 0 0 4 0 4 4 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 331 0 0 41 1 40 41 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 1093 0 0 58 0 58 58 0 8 0 bufpl 288 16304 0 9982 452 0 452 452 0 8 0 anonpl 24 605246 0 588059 136 32 104 104 0 186 0 amapchunkpl 152 167582 0 166284 75 25 50 50 0 158 0 amappl16 200 12922 0 12577 50 31 19 28 0 8 0 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 170 0 156 2 0 2 2 0 8 0 amappl13 176 16 0 15 1 0 1 1 0 8 0 amappl12 168 6126 0 6085 3 0 3 3 0 8 0 amappl11 160 54 0 44 1 0 1 1 0 8 0 amappl10 152 31 0 20 1 0 1 1 0 8 0 amappl9 144 269 0 269 8 8 0 1 0 8 0 amappl8 136 323 0 240 3 0 3 3 0 8 0 amappl7 128 226 0 200 2 0 2 2 0 8 0 amappl6 120 361 0 351 1 0 1 1 0 8 0 amappl5 112 212 0 204 1 0 1 1 0 8 0 amappl4 104 559 0 535 2 1 1 2 0 8 0 amappl3 96 32898 0 32772 10 6 4 4 0 8 0 amappl2 88 6152 0 6072 3 1 2 3 0 8 0 amappl1 80 27112 0 26573 22 9 13 22 0 8 0 amappl 88 52716 0 52427 7 0 7 7 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 72 153 0 23 3 0 3 3 0 8 0 uaddrrnd 24 5421 0 5386 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5421 0 5386 1 0 1 1 0 8 0 vmmpekpl 168 48841 0 48781 5 1 4 4 0 8 0 vmmpepl 168 328482 0 325937 157 46 111 126 0 357 0 vmsppl 464 5420 0 5385 7 2 5 6 0 8 0 rwobjpl 56 91266 0 83770 111 5 106 107 0 8 0 pdppl 4096 10849 0 10770 235 154 81 91 0 8 2 pvpl 32 1629559 0 1602530 424 201 223 351 0 265 3 pmappl 248 5420 0 5385 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1216 0 325 27 0 27 27 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(ffffffff827a64e7) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82827159,ffffffff828734a7,2f7,ffffffff827765b3) at __assert+0x29 sys/kern/subr_prf.c:157 arptfree(fffffd8073824380) at arptfree+0x132 sys/netinet/if_ether.c:759 arptimer(ffffffff82c8e9e0) at arptimer+0x88 sys/netinet/if_ether.c:135 timeout_run(ffffffff82c8e9e0) at timeout_run+0xd0 sys/kern/kern_timeout.c:665 softclock_thread_mp(ffff8000211687f8) at softclock_thread_mp+0xc4 sys/kern/kern_timeout.c:833 end trace frame: 0x0, count: -7 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc __mp_acquire_count(ffffffff82d8c720,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x46d sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 biowait(fffffd806ef71dc0) at biowait+0x91 sys/kern/vfs_bio.c:1278 bwrite(fffffd806ef71dc0) at bwrite+0x21c sys/kern/vfs_bio.c:769 ffs_update(fffffd806e6cf778,1) at ffs_update+0x281 sys/ufs/ffs/ffs_inode.c:113 VOP_FSYNC(fffffd806ec87708,fffffd807f7d7af8,1,ffff8000211f7aa0) at VOP_FSYNC+0xcf sys/kern/vfs_vops.c:311 sys_fsync(ffff8000211f7aa0,ffff80002123b1b0,ffff80002123b200) at sys_fsync+0x10d sys/kern/vfs_syscalls.c:2896 syscall(ffff80002123b280) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002123b280) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71e3360fbe20, count: 1 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc __mp_acquire_count(ffffffff82d8c720,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x46d sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19b sys/kern/kern_synch.c:414 biowait(fffffd806ef71dc0) at biowait+0x91 sys/kern/vfs_bio.c:1278 bwrite(fffffd806ef71dc0) at bwrite+0x21c sys/kern/vfs_bio.c:769 ffs_update(fffffd806e6cf778,1) at ffs_update+0x281 sys/ufs/ffs/ffs_inode.c:113 VOP_FSYNC(fffffd806ec87708,fffffd807f7d7af8,1,ffff8000211f7aa0) at VOP_FSYNC+0xcf sys/kern/vfs_vops.c:311 sys_fsync(ffff8000211f7aa0,ffff80002123b1b0,ffff80002123b200) at sys_fsync+0x10d sys/kern/vfs_syscalls.c:2896 syscall(ffff80002123b280) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002123b280) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71e3360fbe20, count: -14