kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Mar 22 03:35:35 PDT 2022 OpenBSD/amd64 (ci-openbsd-multicore-9.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.191' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program login: panic: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *481473 11682 0 0 0x4000000 0 syz-executor468611390 314310 78764 0 0 0x4000080 1 syz-executor468611390 db_enter() at db_enter+0x18 panic(ffffffff825a2db5) at panic+0x177 witness_checkorder(ffffffff829f3ad8,9,0) at witness_checkorder+0x116d __mp_lock(ffffffff829f38d0) at __mp_lock+0xa1 selwakeup(fffffd8077abb6e8) at selwakeup+0x16 sorwakeup(fffffd8077abb5d0) at sorwakeup+0xc9 rip_input(ffff800021244b78,ffff800021244b84,0,2) at rip_input+0x3b0 ip_deliver(ffff800021244b78,ffff800021244b84,0,2) at ip_deliver+0x322 ip_ours(ffff800021244b78,ffff800021244b84,fffffd806d4da000,0) at ip_ours+0x3ba ip_input_if(ffff800021244b78,ffff800021244b84,4,0,ffff80000019f2a8) at ip_input_if+0x2a1 ipv4_input(ffff80000019f2a8,fffffd806d339b00) at ipv4_input+0x48 if_input_local(ffff80000019f2a8,fffffd806d339b00,2) at if_input_local+0x10e ether_resolve(ffff80000019f2a8,fffffd807f00eb00,fffffd806f6872f8,fffffd806f66b310,ffff800021244cc8) at ether_resolve+0x4ac ether_output(ffff80000019f2a8,fffffd807f00eb00,fffffd806f6872f8,fffffd806f66b310) at ether_output+0x47 end trace frame: 0xffff800021244e40, count: 0 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: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff825a2db5) at panic+0x177 witness_checkorder(ffffffff829f3ad8,9,0) at witness_checkorder+0x116d __mp_lock(ffffffff829f38d0) at __mp_lock+0xa1 selwakeup(fffffd8077abb6e8) at selwakeup+0x16 sorwakeup(fffffd8077abb5d0) at sorwakeup+0xc9 rip_input(ffff800021244b78,ffff800021244b84,0,2) at rip_input+0x3b0 ip_deliver(ffff800021244b78,ffff800021244b84,0,2) at ip_deliver+0x322 ip_ours(ffff800021244b78,ffff800021244b84,fffffd806d4da000,0) at ip_ours+0x3ba ip_input_if(ffff800021244b78,ffff800021244b84,4,0,ffff80000019f2a8) at ip_input_if+0x2a1 ipv4_input(ffff80000019f2a8,fffffd806d339b00) at ipv4_input+0x48 if_input_local(ffff80000019f2a8,fffffd806d339b00,2) at if_input_local+0x10e ether_resolve(ffff80000019f2a8,fffffd807f00eb00,fffffd806f6872f8,fffffd806f66b310,ffff800021244cc8) at ether_resolve+0x4ac ether_output(ffff80000019f2a8,fffffd807f00eb00,fffffd806f6872f8,fffffd806f66b310) at ether_output+0x47 ip_output(fffffd807f00eb00,0,fffffd806f6872e8,20,0,fffffd806f687270,963a7808b4987d23) at ip_output+0x106b rip_output(fffffd807f00eb00,fffffd8070d4d7a0,ffff800021244ee0,1) at rip_output+0x2cb rip_usrreq(fffffd8070d4d7a0,9,fffffd807f00eb00,0,0,ffff8000ffff3a48) at rip_usrreq+0x49c sosend(fffffd8070d4d7a0,0,ffff800021245050,0,0,0) at sosend+0x632 sendit(ffff8000ffff3a48,6,ffff800021245150,0,ffff800021245240) at sendit+0x65d sys_sendto(ffff8000ffff3a48,ffff8000212451e8,ffff800021245240) at sys_sendto+0x80 syscall(ffff8000212452b0) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4a2d141ef50, count: -22 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021244700 rbx 0xffffffff8298dbff cpu_info_full_primary+0x2bff rdx 0x3fd rcx 0 rax 0x68 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe97c692b633df0c3 r11 0xb66cb86fa9aa4f40 r12 0xffffffff8298da00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff811e4c58 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000212446f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor468611390) pid=481473 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3ce8,0xffff8000ffff3518 process=0xffff800021230868 user=0xffff800021240000, vmspace=0xfffffd806cbfda20 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 32458 165893 75907 0 2 0 syz-executor468611390 32458 48898 75907 0 3 0x4000080 fsleep syz-executor468611390 96403 174682 85824 0 2 0 syz-executor468611390 96403 496491 85824 0 3 0x4000080 fsleep syz-executor468611390 1970 201618 23050 0 3 0x3000 suspend syz-executor468611390 1970 75018 23050 0 2 0x4081080 syz-executor468611390 11682 52546 19320 0 2 0 syz-executor468611390 *11682 481473 19320 0 7 0x4000000 syz-executor468611390 98149 213655 58194 0 2 0 syz-executor468611390 98149 501128 58194 0 3 0x4000080 fsleep syz-executor468611390 78764 459783 25844 0 2 0 syz-executor468611390 78764 314310 25844 0 7 0x4000080 syz-executor468611390 23692 83923 47435 0 2 0 syz-executor468611390 23692 211985 47435 0 3 0x4000080 fsleep syz-executor468611390 10803 66702 8429 0 2 0 syz-executor468611390 10803 110357 8429 0 2 0x4000000 syz-executor468611390 58194 435009 17181 0 2 0 syz-executor468611390 23050 335200 17181 0 3 0x80 nanoslp syz-executor468611390 8429 412211 17181 0 3 0x80 nanoslp syz-executor468611390 47435 380158 17181 0 3 0x80 nanoslp syz-executor468611390 25844 80693 17181 0 3 0x80 nanoslp syz-executor468611390 75907 467357 17181 0 3 0x80 nanoslp syz-executor468611390 85824 186157 17181 0 3 0x80 nanoslp syz-executor468611390 19320 420348 17181 0 3 0x80 nanoslp syz-executor468611390 17181 280555 45102 0 3 0x82 nanoslp syz-executor468611390 45102 367450 26502 0 3 0x10008a sigsusp ksh 26502 120907 37350 0 3 0x9a kqread sshd 46824 86529 1 0 3 0x100083 ttyin getty 37350 311892 1 0 3 0x88 kqread sshd 6446 317854 23772 74 3 0x1100092 bpf pflogd 23772 376882 1 0 3 0x80 netio pflogd 13576 507754 31899 73 3 0x1100090 kqread syslogd 31899 177224 1 0 3 0x100082 netio syslogd 57761 385256 1 0 3 0x100080 kqread resolvd 2676 504753 53634 77 3 0x100092 kqread dhcpleased 20877 305595 53634 77 3 0x100092 kqread dhcpleased 53634 115450 1 0 3 0x80 kqread dhcpleased 38340 493880 0 0 3 0x14200 bored smr 19862 17114 0 0 2 0x14200 zerothread 87427 342816 0 0 3 0x14200 aiodoned aiodoned 66956 35283 0 0 3 0x14200 syncer update 17647 356130 0 0 3 0x14200 cleaner cleaner 95620 67141 0 0 3 0x14200 reaper reaper 83567 280003 0 0 3 0x14200 pgdaemon pagedaemon 25961 301627 0 0 3 0x14200 bored viomb 66421 307728 0 0 3 0x40014200 acpi0 acpi0 13693 50170 0 0 3 0x40014200 idle1 57997 288182 0 0 3 0x14200 bored softnet 77723 157931 0 0 3 0x14200 bored systqmp 58526 333101 0 0 3 0x14200 bored systq 79550 313644 0 0 3 0x40014200 bored softclock 44266 258604 0 0 3 0x40014200 idle0 1 201352 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &table->inpt_mtx r = 0 (0xffffffff82b03010) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b #3 rip_input+0x135 #4 ip_deliver+0x322 #5 ip_ours+0x3ba #6 ip_input_if+0x2a1 #7 ipv4_input+0x48 #8 if_input_local+0x10e #9 ether_resolve+0x4ac #10 ether_output+0x47 #11 ip_output+0x106b #12 rip_output+0x2cb #13 rip_usrreq+0x49c #14 sosend+0x632 #15 sendit+0x65d #16 sys_sendto+0x80 #17 syscall+0x489 #18 Xsyscall+0x128 Process 1970 (syz-executor468611390) thread 0xffff8000ffff2fc8 (201618) exclusive rwlock amaplk r = 0 (0xfffffd806dcc7ec0) #0 witness_lock+0x44d #1 uvm_fault_check+0x3ca #2 uvm_fault+0x102 #3 upageflttrap+0x82 #4 usertrap+0x1aa #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806cbfdba8) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 #2 uvm_fault_check+0x3a #3 uvm_fault+0x102 #4 upageflttrap+0x82 #5 usertrap+0x1aa #6 recall_trap+0x8 Process 11682 (syz-executor468611390) thread 0xffff8000ffff3a48 (481473) exclusive rwlock netlock r = 0 (0xffffffff82904160) #0 witness_lock+0x44d #1 solock+0x86 #2 sosend+0x517 #3 sendit+0x65d #4 sys_sendto+0x80 #5 syscall+0x489 #6 Xsyscall+0x128 exclusive mutex &table->inpt_mtx r = 0 (0xffffffff82b03010) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b #3 rip_input+0x135 #4 ip_deliver+0x322 #5 ip_ours+0x3ba #6 ip_input_if+0x2a1 #7 ipv4_input+0x48 #8 if_input_local+0x10e #9 ether_resolve+0x4ac #10 ether_output+0x47 #11 ip_output+0x106b #12 rip_output+0x2cb #13 rip_usrreq+0x49c #14 sosend+0x632 #15 sendit+0x65d #16 sys_sendto+0x80 #17 syscall+0x489 #18 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10149 6454K 6455K 78643K 11239 0 pcb 13 8K 8K 78643K 19 0 rtable 62 2K 2K 78643K 112 0 ifaddr 29 8K 8K 78643K 32 0 counters 40 33K 33K 78643K 40 0 ioctlops 0 0K 4K 78643K 1479 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1167 73K 73K 78643K 1180 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 1 0K 0K 78643K 1 0 proc 67 87K 87K 78643K 282 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 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 2K 78643K 430 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 209 7K 7K 78643K 2818 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 4 0K 0K 78643K 4 0 temp 24 4694K 4758K 78643K 3417 0 kqueue 11 16K 18K 78643K 24 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 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 136 145 0 119 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 8 0 5 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 312 86 0 73 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 10 0 2 1 0 1 1 0 8 0 pfstkey 112 10 0 2 1 0 1 1 0 8 0 pfstate 320 10 0 2 1 0 1 1 0 8 0 pfrule 1360 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 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1487 0 86 88 0 88 88 0 8 0 ffsino 272 1487 0 86 94 0 94 94 0 8 0 nchpl 144 1717 0 151 59 0 59 59 0 8 0 uvmvnodes 80 1497 0 0 31 0 31 31 0 8 0 vnodes 224 1497 0 0 89 0 89 89 0 8 0 namei 1024 4646 0 4646 3 1 2 2 0 8 2 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 216 4412 0 4412 10 9 1 8 0 8 1 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 382 0 337 6 0 6 6 0 8 0 futexpl 64 272 0 267 1 0 1 1 0 8 0 knotepl 120 42 0 0 2 0 2 2 0 8 0 kqueuepl 216 20 0 13 1 0 1 1 0 8 0 pipepl 336 86 0 83 2 1 1 1 0 8 0 fdescpl 496 368 0 337 4 0 4 4 0 8 0 filepl 152 1356 0 1280 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 69 0 57 1 0 1 1 0 8 0 zombiepl 144 337 0 337 2 1 1 1 0 8 1 processpl 1064 382 0 337 4 0 4 4 0 8 0 procpl 672 440 0 387 5 0 5 5 0 8 0 sockpl 480 248 0 206 7 1 6 6 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 65 0 0 8 0 8 8 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 125 0 0 7 0 7 7 0 8 0 bufpl 288 2088 0 93 143 0 143 143 0 8 0 anonpl 24 52988 0 48344 31 3 28 28 0 186 0 amapchunkpl 152 5391 0 4979 17 1 16 16 0 158 0 amappl16 200 93 0 77 2 1 1 1 0 8 0 amappl15 192 69 0 65 1 0 1 1 0 8 0 amappl13 176 34 0 33 2 1 1 1 0 8 0 amappl12 168 20 0 20 2 1 1 1 0 8 1 amappl11 160 46 0 32 1 0 1 1 0 8 0 amappl10 152 2 0 0 1 0 1 1 0 8 0 amappl9 144 464 0 461 1 0 1 1 0 8 0 amappl8 136 389 0 376 1 0 1 1 0 8 0 amappl7 128 65 0 62 1 0 1 1 0 8 0 amappl6 120 116 0 103 1 0 1 1 0 8 0 amappl5 112 165 0 153 1 0 1 1 0 8 0 amappl4 104 687 0 658 1 0 1 1 0 8 0 amappl3 96 168 0 151 1 0 1 1 0 8 0 amappl2 88 369 0 330 1 0 1 1 0 8 0 amappl1 80 9481 0 8957 12 1 11 11 0 8 0 amappl 88 2521 0 2338 5 0 5 5 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 24 368 0 337 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 368 0 337 1 0 1 1 0 8 0 vmmpekpl 168 6525 0 6505 2 0 2 2 0 8 0 vmmpepl 168 30116 0 28541 72 3 69 69 0 357 0 vmsppl 368 367 0 337 3 0 3 3 0 8 0 rwobjpl 56 10479 0 8251 32 0 32 32 0 8 0 pdppl 4096 743 0 674 89 20 69 69 0 8 0 pvpl 32 151298 0 143945 63 3 60 60 0 265 0 pmappl 248 367 0 337 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 456 0 25 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff825a2db5) at panic+0x177 witness_checkorder(ffffffff829f3ad8,9,0) at witness_checkorder+0x116d __mp_lock(ffffffff829f38d0) at __mp_lock+0xa1 selwakeup(fffffd8077abb6e8) at selwakeup+0x16 sorwakeup(fffffd8077abb5d0) at sorwakeup+0xc9 rip_input(ffff800021244b78,ffff800021244b84,0,2) at rip_input+0x3b0 ip_deliver(ffff800021244b78,ffff800021244b84,0,2) at ip_deliver+0x322 ip_ours(ffff800021244b78,ffff800021244b84,fffffd806d4da000,0) at ip_ours+0x3ba ip_input_if(ffff800021244b78,ffff800021244b84,4,0,ffff80000019f2a8) at ip_input_if+0x2a1 ipv4_input(ffff80000019f2a8,fffffd806d339b00) at ipv4_input+0x48 if_input_local(ffff80000019f2a8,fffffd806d339b00,2) at if_input_local+0x10e ether_resolve(ffff80000019f2a8,fffffd807f00eb00,fffffd806f6872f8,fffffd806f66b310,ffff800021244cc8) at ether_resolve+0x4ac ether_output(ffff80000019f2a8,fffffd807f00eb00,fffffd806f6872f8,fffffd806f66b310) at ether_output+0x47 ip_output(fffffd807f00eb00,0,fffffd806f6872e8,20,0,fffffd806f687270,963a7808b4987d23) at ip_output+0x106b rip_output(fffffd807f00eb00,fffffd8070d4d7a0,ffff800021244ee0,1) at rip_output+0x2cb rip_usrreq(fffffd8070d4d7a0,9,fffffd807f00eb00,0,0,ffff8000ffff3a48) at rip_usrreq+0x49c sosend(fffffd8070d4d7a0,0,ffff800021245050,0,0,0) at sosend+0x632 sendit(ffff8000ffff3a48,6,ffff800021245150,0,ffff800021245240) at sendit+0x65d sys_sendto(ffff8000ffff3a48,ffff8000212451e8,ffff800021245240) at sys_sendto+0x80 syscall(ffff8000212452b0) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4a2d141ef50, count: -22 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff829f38d0) at __mp_lock+0x12e __mp_acquire_count(ffffffff829f38d0,1) at __mp_acquire_count+0x48 mi_switch() at mi_switch+0x3d3 sleep_finish(ffff80002125d460,1) at sleep_finish+0x198 rwsleep(ffff8000211942a0,ffffffff828ff1e0,120,ffffffff825821a8,0) at rwsleep+0xd5 futex_wait(4a31d92cd20,2,0,2) at futex_wait+0x13c sys_futex(ffff8000211942a0,ffff80002125d5f0,ffff80002125d650) at sys_futex+0xf8 syscall(ffff80002125d6c0) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4a350196f70, count: 3 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff829f38d0) at __mp_lock+0x12e __mp_acquire_count(ffffffff829f38d0,1) at __mp_acquire_count+0x48 mi_switch() at mi_switch+0x3d3 sleep_finish(ffff80002125d460,1) at sleep_finish+0x198 rwsleep(ffff8000211942a0,ffffffff828ff1e0,120,ffffffff825821a8,0) at rwsleep+0xd5 futex_wait(4a31d92cd20,2,0,2) at futex_wait+0x13c sys_futex(ffff8000211942a0,ffff80002125d5f0,ffff80002125d650) at sys_futex+0xf8 syscall(ffff80002125d6c0) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4a350196f70, count: -12 ddb{1}>