panic: pool_do_get: pdppl free list modified: page 0xfffffd807c79f000; item addr 0xfffffd807c79f000; offset 0x0=0x11e57ed0 != 0x8c1db69afe7e0cc9 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *345037 66840 0 0x2 0 0 syz-executor.4 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82618cf2) at panic+0x161 sys/kern/subr_prf.c:198 pool_do_get(ffffffff829db668,1,ffff8000231c5628) at pool_do_get+0x427 sys/kern/subr_pool.c:738 pool_get(ffffffff829db668,1) at pool_get+0xb3 sys/kern/subr_pool.c:582 pmap_create() at pmap_create+0x13f sys/arch/amd64/amd64/pmap.c:1337 uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 uvmspace_init sys/uvm/uvm_map.c:3325 [inline] uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 uvmspace_alloc sys/uvm/uvm_map.c:3303 [inline] uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 sys/uvm/uvm_map.c:3896 process_new(ffff8000231f5510,ffff800021711798,1) at process_new+0x304 sys/kern/kern_fork.c:260 fork1(ffff8000217ae2a8,1,ffffffff81ca0de0,0,ffff8000231c5900,0) at fork1+0x30c sys/kern/kern_fork.c:379 syscall(ffff8000231c5970) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0850, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: pool_do_get: pdppl free list modified: page 0xfffffd807c79f000; item addr 0xfffffd807c79f000; offset 0x0=0x11e57ed0 != 0x8c1db69afe7e0cc9 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82618cf2) at panic+0x161 sys/kern/subr_prf.c:198 pool_do_get(ffffffff829db668,1,ffff8000231c5628) at pool_do_get+0x427 sys/kern/subr_pool.c:738 pool_get(ffffffff829db668,1) at pool_get+0xb3 sys/kern/subr_pool.c:582 pmap_create() at pmap_create+0x13f sys/arch/amd64/amd64/pmap.c:1337 uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 uvmspace_init sys/uvm/uvm_map.c:3325 [inline] uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 uvmspace_alloc sys/uvm/uvm_map.c:3303 [inline] uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 sys/uvm/uvm_map.c:3896 process_new(ffff8000231f5510,ffff800021711798,1) at process_new+0x304 sys/kern/kern_fork.c:260 fork1(ffff8000217ae2a8,1,ffffffff81ca0de0,0,ffff8000231c5900,0) at fork1+0x30c sys/kern/kern_fork.c:379 syscall(ffff8000231c5970) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0850, count: -10 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000231c54a0 rbx 0x8c1db69afe7e0cc9 rdx 0 rcx 0 rax 0xffff8000217ae2a8 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4f1d51cc3993af9a r11 0xe3fce8d2ed1265c6 r12 0 r13 0xfffffd807c79f000 r14 0 r15 0x1 rip 0xffffffff823ac408 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000231c5490 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.4) pid=345037 stat=onproc flags process=2 proc=0 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000231f4550,0xffff80002cec42b8 process=0xffff800021711798 user=0xffff8000231c0000, vmspace=0xfffffd805ec7c118 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 92308 210338 29189 0 2 0 syz-executor.7 92308 188229 29189 0 3 0x4000080 fsleep syz-executor.7 80926 252401 33578 0 3 0x80 nanoslp syz-executor.6 80926 177073 33578 0 3 0x4000080 fsleep syz-executor.6 67969 83641 45832 0 2 0 syz-executor.3 67969 330778 45832 0 3 0x4000080 fsleep syz-executor.3 81835 298736 20449 0 2 0 syz-executor.1 81835 171127 20449 0 3 0x4000080 fsleep syz-executor.1 54504 422930 60657 0 2 0 syz-executor.0 54504 271169 60657 0 3 0x4000080 fsleep syz-executor.0 54504 408234 60657 0 3 0x4000080 fsleep syz-executor.0 54504 217584 60657 0 3 0x4000080 fsleep syz-executor.0 31454 359145 53697 0 2 0 syz-executor.2 31454 68004 53697 0 2 0x4000000 syz-executor.2 60657 235510 12197 0 3 0x82 nanoslp syz-executor.0 29189 352899 12197 0 3 0x82 nanoslp syz-executor.7 20449 276439 12197 0 3 0x82 nanoslp syz-executor.1 64129 468245 12197 0 3 0x82 nanoslp syz-executor.5 *66840 345037 12197 0 7 0x2 syz-executor.4 33578 226496 12197 0 3 0x82 nanoslp syz-executor.6 45832 292710 12197 0 3 0x82 nanoslp syz-executor.3 55107 347486 1 0 3 0x100083 ttyin getty 53697 209882 12197 0 3 0x82 nanoslp syz-executor.2 26381 286346 0 0 3 0x14200 acct acct 20030 399758 0 0 3 0x14280 nfsidl nfsio 56144 378931 0 0 3 0x14280 nfsidl nfsio 20997 220089 0 0 3 0x14280 nfsidl nfsio 41770 455032 0 0 3 0x14280 nfsidl nfsio 49110 3500 0 0 3 0x14280 nfsidl nfsio 41403 36619 0 0 3 0x14280 nfsidl nfsio 12690 63206 0 0 3 0x14280 nfsidl nfsio 99188 503433 0 0 3 0x14280 nfsidl nfsio 50032 70992 0 0 3 0x14280 nfsidl nfsio 80137 455796 0 0 3 0x14280 nfsidl nfsio 68329 222572 0 0 3 0x14280 nfsidl nfsio 50825 321158 0 0 3 0x14280 nfsidl nfsio 62077 90452 0 0 3 0x14280 nfsidl nfsio 47346 198877 0 0 3 0x14280 nfsidl nfsio 5145 442396 0 0 3 0x14280 nfsidl nfsio 14155 403207 0 0 3 0x14280 nfsidl nfsio 89058 32676 0 0 3 0x14280 nfsidl nfsio 10635 29020 0 0 3 0x14280 nfsidl nfsio 52034 28865 0 0 3 0x14280 nfsidl nfsio 23153 454065 0 0 3 0x14280 nfsidl nfsio 70355 321590 0 0 3 0x14200 bored sosplice 12197 83719 72061 0 3 0x82 thrsleep syz-fuzzer 12197 235965 72061 0 3 0x4000082 nanoslp syz-fuzzer 12197 119812 72061 0 3 0x4000082 thrsleep syz-fuzzer 12197 217303 72061 0 3 0x4000082 wait syz-fuzzer 12197 502420 72061 0 3 0x4000082 thrsleep syz-fuzzer 12197 20692 72061 0 3 0x4000082 wait syz-fuzzer 12197 166025 72061 0 3 0x4000082 wait syz-fuzzer 12197 1669 72061 0 3 0x4000082 wait syz-fuzzer 12197 293476 72061 0 3 0x4000082 thrsleep syz-fuzzer 12197 251419 72061 0 3 0x4000082 wait syz-fuzzer 12197 38847 72061 0 3 0x4000082 wait syz-fuzzer 12197 360051 72061 0 3 0x4000082 wait syz-fuzzer 12197 138076 72061 0 3 0x4000082 wait syz-fuzzer 12197 123441 72061 0 3 0x4000082 kqread syz-fuzzer 72061 74360 48701 0 3 0x10008a sigsusp ksh 48701 435861 22350 0 3 0x9a kqread sshd 22350 469444 1 0 3 0x88 kqread sshd 56699 299575 87956 73 3 0x1100090 kqread syslogd 87956 333647 1 0 3 0x100082 netio syslogd 54115 486239 1 0 3 0x100080 kqread resolvd 55812 388778 79066 77 3 0x100092 kqread dhcpleased 5115 344141 79066 77 3 0x100092 kqread dhcpleased 79066 198958 1 0 3 0x80 kqread dhcpleased 90590 3604 0 0 3 0x14200 bored smr 44121 446193 0 0 2 0x14200 zerothread 32511 207278 0 0 3 0x14200 aiodoned aiodoned 78399 410468 0 0 3 0x14200 syncer update 6773 410363 0 0 3 0x14200 cleaner cleaner 64614 247468 0 0 3 0x14200 reaper reaper 61474 208708 0 0 3 0x14200 pgdaemon pagedaemon 91101 32344 0 0 3 0x14200 bored viomb 87115 506443 0 0 3 0x40014200 acpi0 acpi0 5081 320854 0 0 3 0x14200 bored softnet 84797 491124 0 0 3 0x14200 bored softnet 69705 379300 0 0 3 0x14200 bored softnet 11862 292134 0 0 3 0x14200 bored softnet 99740 314982 0 0 3 0x14200 bored systqmp 7664 413211 0 0 3 0x14200 bored systq 69390 205342 0 0 3 0x40014200 bored softclock 6532 258434 0 0 3 0x40014200 idle0 1 39981 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10197 6427K 6831K 78643K 19618 0 pcb 13 18K 23K 78643K 1150 0 rtable 179 18K 20K 78643K 3942 0 ifaddr 130 33K 33K 78643K 1457 0 sysctl 3 1K 1K 78643K 3 0 counters 24 17K 17K 78643K 214 0 ioctlops 0 0K 4K 78643K 3778 0 iov 0 0K 32K 78643K 905 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1488 93K 93K 78643K 5632 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 72 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 581 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 65K 78643K 8198 0 sigio 0 0K 0K 78643K 1062 0 proc 59 59K 75K 78643K 2046 0 subproc 104 6K 6K 78643K 741 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 491 0 in_multi 63 4K 6K 78643K 963 0 ether_multi 1 0K 0K 78643K 41 0 mrt 1 0K 0K 78643K 41 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 163 731K 731K 78643K 163 0 exec 0 0K 2K 78643K 3172 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 400 534K 534K 78643K 44430 0 UVM aobj 131 6K 6K 78643K 139 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 4 0K 0K 78643K 263 0 NDP 10 0K 2K 78643K 303 0 temp 120 4730K 5754K 78643K 90429 0 kqueue 12 18K 26K 78643K 558 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 574 0 571 6 5 1 3 0 8 0 rtentry 112 883 0 816 4 1 3 4 0 8 0 unpcb 144 6298 0 6285 64 60 4 10 0 8 3 syncache 296 27 0 27 6 5 1 1 0 8 1 tcpqe 32 16 0 16 4 3 1 1 0 8 1 tcpcb 768 1881 0 1871 80 77 3 18 0 8 1 arp 88 123 0 111 1 0 1 1 0 8 0 ipq 40 4 0 3 3 2 1 1 0 8 0 ipqe 40 13 0 12 3 2 1 1 0 8 0 inpcb 336 5886 0 5875 94 85 9 17 0 8 8 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 4 0 4 1 1 0 1 0 8 0 nd6 48 221 0 206 1 0 1 1 0 8 0 kcovpl 48 57 0 49 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 1 0 1 0 8 0 ppxss 1160 92 0 92 9 9 0 1 0 8 0 pppxif 1608 11 0 11 3 3 0 1 0 8 0 pfstscr 40 1641 0 1635 1 0 1 1 0 8 0 pfosfp 40 72 0 69 1 0 1 1 0 8 0 pfosfpen 112 72 0 1 3 0 3 3 0 8 0 pfrktable 1344 629 0 622 4 3 1 1 0 8 0 pfanchor 1280 574 2 67 43 0 43 43 0 8 0 pftag 88 9 0 6 3 2 1 1 0 8 0 pfqueue 264 76 0 76 4 4 0 1 0 8 0 pfstitem 24 93 0 87 1 0 1 1 0 8 0 pfstkey 120 1641 0 1637 1 0 1 1 0 8 0 pfstate 336 824 0 821 1 0 1 1 0 8 0 pfrule 1360 306 0 271 11 8 3 3 0 8 0 rttmr 136 12 0 12 2 2 0 1 0 8 0 art_heap8 4096 4 0 3 4 3 1 2 0 8 0 art_heap4 256 4165 0 3874 47 20 27 29 0 8 1 art_table 32 4169 0 3877 4 0 4 4 0 8 0 art_node 16 882 0 823 1 0 1 1 0 8 0 sysvmsgpl 40 62 0 37 1 0 1 1 0 8 0 semapl 112 578 0 568 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 11591 0 10135 92 0 92 92 0 8 0 ffsino 240 11591 0 10135 86 0 86 86 0 8 0 nchpl 144 22371 0 20742 63 1 62 63 0 8 0 rtmask 32 2 0 2 1 1 0 1 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 89580 0 89580 4 3 1 2 0 8 1 vcpupl 2048 72 0 1 9 0 9 9 0 8 0 vmpool 536 94 0 23 5 0 5 5 0 8 0 pfiaddrpl 120 191 0 174 3 2 1 1 0 8 0 kstatmem 264 298 0 278 2 0 2 2 0 8 0 scsiplug 72 8 0 8 2 2 0 1 0 8 0 scxspl 216 60707 0 60707 18 17 1 8 0 8 1 plimitpl 152 896 0 881 1 0 1 1 0 8 0 sigapl 424 8411 0 8344 8 0 8 8 0 8 0 futexpl 64 75469 0 75462 1 0 1 1 0 8 0 knotepl 120 124156 0 124076 48 43 5 11 0 8 0 kqueuepl 184 1315 0 1307 17 16 1 4 0 8 0 pipepl 288 1707 0 1679 32 29 3 7 0 8 0 fdescpl 432 8373 0 8345 4 0 4 4 0 8 0 filepl 120 60287 0 60011 69 57 12 16 0 8 2 lockfpl 104 3215 0 3213 7 6 1 2 0 8 0 lockfspl 48 798 0 796 1 0 1 1 0 8 0 sessionpl 144 74 0 58 1 0 1 1 0 8 0 pgrppl 48 81 0 65 1 0 1 1 0 8 0 ucredpl 104 6563 0 6552 1 0 1 1 0 8 0 zombiepl 144 8345 0 8344 1 0 1 1 0 8 0 processpl 1000 8411 0 8344 10 1 9 9 0 8 0 procpl 672 20003 0 19915 21 12 9 9 0 8 1 sosppl 168 66 0 66 10 10 0 1 0 8 0 sockpl 456 12758 0 12731 343 327 16 34 0 8 12 mcl64k 65536 301 0 301 10 9 1 1 0 8 1 mcl16k 16384 137 0 137 10 9 1 1 0 8 1 mcl12k 12288 281 0 281 9 8 1 1 0 8 1 mcl9k 9216 126 0 126 12 11 1 1 0 8 1 mcl8k 8192 726 0 725 4 3 1 2 0 8 0 mcl4k 4096 1319 0 1319 4 3 1 1 0 8 1 mcl2k2 2112 133 0 133 13 12 1 1 0 8 1 mcl2k 2048 91222 0 91162 25 16 9 13 0 8 0 mtagpl 96 565 0 554 9 5 4 5 0 8 3 mbufpl 256 230418 0 230203 813 788 25 572 0 8 1 bufpl 288 15173 0 8773 458 0 458 458 0 8 0 anonpl 24 1508044 0 1488847 188 70 118 129 0 188 1 amapchunkpl 152 127350 0 126626 72 42 30 40 0 158 1 amappl16 200 20245 0 19587 89 53 36 48 0 8 0 amappl15 192 1390 0 1379 2 1 1 2 0 8 0 amappl14 184 1385 0 1381 1 0 1 1 0 8 0 amappl13 176 1298 0 1296 1 0 1 1 0 8 0 amappl12 168 1320 0 1312 1 0 1 1 0 8 0 amappl11 160 165 0 154 1 0 1 1 0 8 0 amappl10 152 1579 0 1568 1 0 1 1 0 8 0 amappl9 144 1682 0 1677 1 0 1 1 0 8 0 amappl8 136 2272 0 2181 4 0 4 4 0 8 0 amappl7 128 976 0 953 1 0 1 1 0 8 0 amappl6 120 1354 0 1327 2 1 1 2 0 8 0 amappl5 112 7547 0 7535 1 0 1 1 0 8 0 amappl4 104 2313 0 2278 2 1 1 2 0 8 0 amappl3 96 24135 0 24079 2 0 2 2 0 8 0 amappl2 88 3241 0 3189 3 1 2 3 0 8 0 amappl1 80 195035 0 194305 28 12 16 21 0 8 0 amappl 88 42990 0 42785 7 2 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 72 138 0 8 3 0 3 3 0 8 0 uaddrrnd 24 8466 0 8368 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8466 0 8368 1 0 1 1 0 8 0 vmmpekpl 168 60747 0 60676 4 0 4 4 0 8 0 vmmpepl 168 826664 0 823717 243 100 143 151 0 357 6 vmsppl 272 8466 0 8368 8 1 7 7 0 8 0 rwobjpl 24 194534 0 186652 50 1 49 50 0 8 0 pdppl 4096 16939 0 16807 642 509 133 136 0 8 1 pdppl: pool(0xffffffff829db668:pdppl): free list modified: page 0xfffffd807c79f000; item ordinal 0; addr 0xfffffd807c79f000 (p 0xfffffd8075ac6000); offset 0x0=0x11e57ed0 pool(pdppl): free list modified: page 0xfffffd807c79f000; item ordinal 0; addr 0xfffffd807c79f000 (p 0xfffffd8075ac6000); offset 0x0=0x0 pdppl: pool(0xffffffff829db668:pdppl): page inconsistency: page 0xfffffd807c79f000; item ordinal 1; addr 0x1bfa9f830d82ddf2 pvpl 32 3041021 0 3016837 388 188 200 268 0 265 4 pmappl 216 8466 0 8368 6 0 6 6 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2361 0 1489 43 15 28 41 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82618cf2) at panic+0x161 sys/kern/subr_prf.c:198 pool_do_get(ffffffff829db668,1,ffff8000231c5628) at pool_do_get+0x427 sys/kern/subr_pool.c:738 pool_get(ffffffff829db668,1) at pool_get+0xb3 sys/kern/subr_pool.c:582 pmap_create() at pmap_create+0x13f sys/arch/amd64/amd64/pmap.c:1337 uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 uvmspace_init sys/uvm/uvm_map.c:3325 [inline] uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 uvmspace_alloc sys/uvm/uvm_map.c:3303 [inline] uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 sys/uvm/uvm_map.c:3896 process_new(ffff8000231f5510,ffff800021711798,1) at process_new+0x304 sys/kern/kern_fork.c:260 fork1(ffff8000217ae2a8,1,ffffffff81ca0de0,0,ffff8000231c5900,0) at fork1+0x30c sys/kern/kern_fork.c:379 syscall(ffff8000231c5970) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0850, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82618cf2) at panic+0x161 sys/kern/subr_prf.c:198 pool_do_get(ffffffff829db668,1,ffff8000231c5628) at pool_do_get+0x427 sys/kern/subr_pool.c:738 pool_get(ffffffff829db668,1) at pool_get+0xb3 sys/kern/subr_pool.c:582 pmap_create() at pmap_create+0x13f sys/arch/amd64/amd64/pmap.c:1337 uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 uvmspace_init sys/uvm/uvm_map.c:3325 [inline] uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 uvmspace_alloc sys/uvm/uvm_map.c:3303 [inline] uvmspace_fork(ffff800021711798) at uvmspace_fork+0x60 sys/uvm/uvm_map.c:3896 process_new(ffff8000231f5510,ffff800021711798,1) at process_new+0x304 sys/kern/kern_fork.c:260 fork1(ffff8000217ae2a8,1,ffffffff81ca0de0,0,ffff8000231c5900,0) at fork1+0x30c sys/kern/kern_fork.c:379 syscall(ffff8000231c5970) at syscall+0x447 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0850, count: -10