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Fixed

LINCD-11368 : startup KUAP call trace of qemuppc64

Created: Dec 28, 2022    Updated: Feb 1, 2023
Resolved Date: Jan 7, 2023
Found In Version: 10.23.1.0
Fix Version: 10.23.5.0
Severity: Standard
Applicable for: Wind River Linux CD
Component/s: Kernel

Description

the kernel linux-yocto-5.15.78+gitAUTOINC+f475b1a9de_8cd3f1c8dc, this call trace may take several tries to reproduce, and sometimes it causes system startup to get stuck,

[   12.646894] Kernel attempted to read user page (1286305a0) - exploit attempt? (uid: 0)
[   12.647150] ------------[ cut here ]------------
[   12.647212] Bug: Read fault blocked by KUAP!
[   12.648347] WARNING: CPU: 0 PID: 131 at arch/powerpc/mm/fault.c:228 ___do_page_fault+0x6c4/0xc50
[   12.649307] Modules linked in: fuse configfs
[   12.649818] CPU: 0 PID: 131 Comm: mount Not tainted 5.15.78-yocto-standard #1
[   12.650117] NIP:  c00000000006e654 LR: c00000000006e650 CTR: 0000000000000000
[   12.650216] REGS: c00000000a53f620 TRAP: 0700   Not tainted  (5.15.78-yocto-standard)
[   12.650333] MSR:  8000000000021033 <SF,ME,IR,DR,RI,LE>  CR: 24022240  XER: 20040003
[   12.650640] Kernel attempted to read user page (11ba91cf0) - exploit attempt? (uid: 0)
[   12.650627] CFAR: c0000000001033b0 IRQMASK: 3
[   12.650627] GPR00:
[   12.650807] ------------[ cut here ]------------
[   12.650813] c00000000006e650 c00000000a53f8c0 c000000001b05a00 0000000000000020
[   12.650813] GPR04: c000000001933df8 c000000001933d50 0000000000000001
[   12.650987] Bug: Read fault blocked by KUAP!
[   12.651039] WARNING: CPU: 1 PID: 130 at arch/powerpc/mm/fault.c:228 ___do_page_fault+0x6c4/0xc50
[   12.651098] Modules linked in:
[   12.651119] 0000000000000001
[   12.651119] GPR08: c000000001bc3940
[   12.651204]  fuse
[   12.651231] 0000000000000000 0000000000000000
[   12.651283]  configfs
[   12.651308] 0000000000002000
[   12.651348]
[   12.651373]
[   12.651373] GPR12:
[   12.651411] CPU: 1 PID: 130 Comm: mount Not tainted 5.15.78-yocto-standard #1
[   12.651428] c000000001933d70
[   12.651477] NIP:  c00000000006e654 LR: c00000000006e650 CTR: c00000000096f9f0
[   12.651520] c000000001c60000
[   12.651552] REGS: c00000000a53b620 TRAP: 0700   Not tainted  (5.15.78-yocto-standard)
[   12.651601] 0000000000000000
[   12.651632] MSR:  8000000000021033
[   12.651683] ffffffffffffffff
[   12.651713] <SF
[   12.651741]
[   12.651741] GPR16:
[   12.651768] ,ME
[   12.651793] ffffffffffffffff
[   12.651825] ,IR
[   12.651850] 0000000000000000
[   12.651881] ,DR
[   12.651906] 0000000000000000
[   12.651937] ,RI
[   12.651963] 0000000000000000
[   12.651994] ,LE
[   12.652019]
[   12.652019] GPR20:
[   12.652051] >  CR: 28022246  XER: 20040003
[   12.652076] CFAR: c0000000001033b0
[   12.652098] 0000000001000026
[   12.652132] IRQMASK: 3
[   12.652163] 0000000000000000
[   12.652194]
[   12.652194] GPR00:
[   12.652219] 0000000000000000
[   12.652251] c00000000006e650
[   12.652283] 00000001286309c0
[   12.652315] c00000000a53b8c0
[   12.652345]
[   12.652345] GPR24:
[   12.652375] c000000001b05a00
[   12.652407] 0000000001000026
[   12.652439] 0000000000000020
[   12.652470] 00000001286305a0
[   12.652501]
[   12.652501] GPR04:
[   12.652532] 0000000000000000
[   12.652563] 0000000000000001
[   12.652596] c000000009c95000
[   12.652626] 0000000000000000
[   12.652658]
[   12.652658] GPR28:
[   12.652689] 0000000000000000
[   12.652721] 0000000000000300
[   12.652752] 0000000000000000
[   12.652783] c00000000131dee8
[   12.652814]
[   12.652814] GPR08:
[   12.652844] 00000001286305a0
[   12.652875] c000000001bc3940
[   12.652907] c00000000a53fa20
[   12.652937] 0000000000000000
[   12.652977]
[   12.652998] 0000000000000000 0000000000002000
[   12.653041] NIP [c00000000006e654] ___do_page_fault+0x6c4/0xc50
[   12.653097] LR [c00000000006e650] ___do_page_fault+0x6c0/0xc50
[   12.653240]
[   12.653240] GPR12: c000000001933d70 c00000000ffe1600 0000000000000000 ffffffffffffffff
[   12.653240] GPR16: ffffffffffffffff 0000000000000000 0000000000000000
[   12.653334] Call Trace:
[   12.653335] 0000000000000000
[   12.653335] GPR20: 0000000000000020 0000000000000000 0000000000000000 000000011ba909c0
[   12.653335] GPR24:
[   12.653508] [c00000000a53f8c0] [c00000000006e650] ___do_page_fault+0x6c0/0xc50
[   12.653524] 0000000000000020
[   12.653626]  (unreliable)
[   12.653661] 000000011ba91cf0 0000000000000000 c000000009d03700
[   12.653661] GPR28: 0000000000000300 c00000000131dee8 000000011ba91cf0 c00000000a53ba20
[   12.653846] NIP [c00000000006e654] ___do_page_fault+0x6c4/0xc50
[   12.653920] LR [c00000000006e650] ___do_page_fault+0x6c0/0xc50
[   12.653760] [c00000000a53f980] [c00000000006ed50] do_page_fault+0x30/0xc0
[   12.653992] Call Trace:
[   12.654070]
[   12.654065] [c00000000a53b8c0] [c00000000006e650] ___do_page_fault+0x6c0/0xc50 (unreliable)
[   12.654111] [c00000000a53f9b0] [c0000000000088dc] data_access_common_virt+0x19c/0x1f0
[   12.654185] [c00000000a53b980] [c00000000006ed50] do_page_fault+0x30/0xc0
[   12.654276] --- interrupt: 300 at __copy_tofrom_user_base+0x54/0x5a4
[   12.654318] [c00000000a53b9b0] [c0000000000088dc] data_access_common_virt+0x19c/0x1f0
[   12.654400] NIP:  c000000000098060 LR: c0000000008e8f98 CTR: 0000000000007fff
[   12.654439] --- interrupt: 300 at __copy_tofrom_user_base+0x54/0x5a4
[   12.654484] REGS: c00000000a53fa20 TRAP: 0300   Not tainted  (5.15.78-yocto-standard)
[   12.654530] NIP:  c000000000098060 LR: c0000000008e8f98 CTR: 0000000000007fff
[   12.654579] MSR:  800000000280b033 <
[   12.654630] REGS: c00000000a53ba20 TRAP: 0300   Not tainted  (5.15.78-yocto-standard)
[   12.654649] MSR:  800000000280b033
[   12.654672] SF
[   12.654724] <
[   12.654758] ,VEC
[   12.654783] SF
[   12.654808] ,VSX
[   12.654835] ,VEC
[   12.654860] ,EE
[   12.654887] ,VSX
[   12.654914] ,FP
[   12.654940] ,EE
[   12.654964] ,ME
[   12.654990] ,FP
[   12.655016] ,IR
[   12.655041] ,ME
[   12.655065] ,DR
[   12.655089] ,IR
[   12.655114] ,RI
[   12.655139] ,DR,RI
[   12.655163] ,LE
[   12.655187] ,LE>
[   12.655212] >  CR: 24002440  XER: 00000003
[   12.655237] CFAR: c000000000089310
[   12.655250]   CR: 24002440  XER: 20040003
[   12.655295] DAR: 00000001286305a0 DSISR: 08000000 IRQMASK: 0
[   12.655330] CFAR: c000000000089310
[   12.655336]
[   12.655336] GPR00: 0000000000000800
[   12.655381] DAR: 000000011ba91cf0 DSISR: 08000000
[   12.655416] c00000000a53fcc0
[   12.655456] IRQMASK: 0
[   12.655495] c000000001b05a00
[   12.655526]
[   12.655526] GPR00:
[   12.655553] c00000000783fff0
[   12.655584] 0000000000000800
[   12.655618]
[   12.655618] GPR04:
[   12.655649] c00000000a53bcc0
[   12.655681] 00000001286305a0
[   12.655713] c000000001b05a00
[   12.655745] 0000000000010000
[   12.655776] c0000000078afff0
[   12.655808] 0000000000000000
[   12.655838]
[   12.655838] GPR04:
[   12.655870] 0000000000000000
[   12.655901] 000000011ba91cf0
[   12.655935]
[   12.655935] GPR08:
[   12.655966] 0000000000010000
[   12.655998] 00000000000000ff
[   12.656030] 0000000000000000
[   12.656062] 0000000000000000
[   12.656093] 0000000000000000
[   12.656125] 0000000000000000
[   12.656155]
[   12.656155] GPR08:
[   12.656187] 0000000000002000
[   12.656218] 00000000000000ff
[   12.656252]
[   12.656252] GPR12:
[   12.656282] 0000000000000000
[   12.656315] 00000000002867d2
[   12.656346] 0000000000000000
[   12.656378] c000000001c60000
[   12.656409] 0000000000000000
[   12.656441] 0000000000000000
[   12.656471]
[   12.656471] GPR12:
[   12.656501] ffffffffffffffff
[   12.656531] 00000000003caa54
[   12.656564]
[   12.656564] GPR16:
[   12.656595] c00000000ffe1600
[   12.656628] ffffffffffffffff
[   12.656659] 0000000000000000
[   12.656691] 0000000000000000
[   12.656722] ffffffffffffffff
[   12.656754] 0000000000000000
[   12.656784]
[   12.656784] GPR16:
[   12.656816] 0000000000000000
[   12.656847] ffffffffffffffff
[   12.656882]
[   12.656882] GPR20:
[   12.656912] 0000000000000000
[   12.656945] 0000000001000026
[   12.656976] 0000000000000000
[   12.657009] 0000000000000000
[   12.657040] 0000000000000000
[   12.657073] 0000000000000000
[   12.657103]
[   12.657103] GPR20:
[   12.657135] 00000001286309c0
[   12.657166] 0000000000000020
[   12.657206]
[   12.657206] GPR24:
[   12.657246] 0000000000000000
[   12.657280] 0000000001000026
[   12.657311] 0000000000000000
[   12.657343] 00000001286305a0
[   12.657374] 000000011ba909c0
[   12.657406] 00000001286309c0
[   12.657437]
[   12.657437] GPR24:
[   12.657468] c000000007212138
[   12.657498] 0000000000000020
[   12.657531]
[   12.657531] GPR28:
[   12.657561] 000000011ba91cf0
[   12.657595] c000000007212130
[   12.657627] 000000011ba909c0
[   12.657659] c000000007840000
[   12.657691] c0000000077e1140
[   12.657722] 0000000000010000
[   12.657753]
[   12.657753] GPR28:
[   12.657785] c000000001b35cf8
[   12.657816] c0000000077e1138
[   12.657849]
[   12.657881] c0000000078b0000
[   12.657913] NIP [c000000000098060] __copy_tofrom_user_base+0x54/0x5a4
[   12.657958] 0000000000010000 c000000001b35cf8
[   12.658007] LR [c0000000008e8f98] _copy_from_user+0x98/0x1f0
[   12.658068] NIP [c000000000098060] __copy_tofrom_user_base+0x54/0x5a4
[   12.658121] --- interrupt: 300
[   12.658149] LR [c0000000008e8f98] _copy_from_user+0x98/0x1f0
[   12.658180] --- interrupt: 300
[   12.658241] [c00000000a53fd00] [c00000000045fb74] sys_mount+0xe4/0x4e0
[   12.658248] [c00000000a53bd00] [c00000000045fb74] sys_mount+0xe4/0x4e0
[   12.658347]
[   12.658358] [c00000000a53fdb0] [c00000000002cfd4] system_call_exception+0x194/0x2f0
[   12.658408] [c00000000a53bdb0] [c00000000002cfd4] system_call_exception+0x194/0x2f0
[   12.658473] [c00000000a53fe10] [c00000000000bd68] system_call_vectored_common+0xe8/0x278
[   12.658536] [c00000000a53be10] [c00000000000bd68] system_call_vectored_common+0xe8/0x278
[   12.658599] --- interrupt: 3000 at 0x7fff8721bf54
[   12.658661] --- interrupt: 3000 at 0x7fffbcb9bf54
[   12.659024] NIP:  00007fffbcb9bf54 LR: 0000000000000000 CTR: 0000000000000000
[   12.659061] NIP:  00007fff8721bf54 LR: 0000000000000000 CTR: 0000000000000000
[   12.659113] REGS: c00000000a53be80 TRAP: 3000   Not tainted  (5.15.78-yocto-standard)
[   12.659162] REGS: c00000000a53fe80 TRAP: 3000   Not tainted  (5.15.78-yocto-standard)
[   12.659212] MSR:  800000000280f033
[   12.659263] MSR:  800000000280f033
[   12.659313] <
[   12.659347] <
[   12.659380] SF
[   12.659406] SF
[   12.659431] ,VEC
[   12.659457] ,VEC
[   12.659481] ,VSX
[   12.659508] ,VSX
[   12.659535] ,EE
[   12.659560] ,EE
[   12.659585] ,PR,FP
[   12.659611] ,PR,FP
[   12.659637] ,ME,IR
[   12.659661] ,ME
[   12.659688] ,DR
[   12.659713] ,IR
[   12.659738] ,RI
[   12.659764] ,DR
[   12.659789] ,LE
[   12.659815] ,RI
[   12.659842] >  CR: 42002444  XER: 00000000
[   12.659883] IRQMASK: 0
[   12.659905] ,LE>  CR: 42002444  XER: 00000000
[   12.659939] IRQMASK: 0
[   12.659965]
[   12.659965] GPR00:
[   12.660004]
[   12.660004] GPR00:
[   12.660030] 0000000000000015
[   12.660063] 0000000000000015
[   12.660096] 00007fffcb3aea20
[   12.660129] 00007ffffed3c0e0
[   12.660161] 00007fffbcc87200
[   12.660192] 00007fff87307200
[   12.660223] 000000011ba92090
[   12.660254] 0000000128632090
[   12.660286]
[   12.660286] GPR04:
[   12.660317]
[   12.660317] GPR04:
[   12.660348] 000000011ba909c0
[   12.660381] 00000001286309c0
[   12.660413] 000000011ba90580
[   12.660444] 0000000128630580
[   12.660475] 0000000000000020
[   12.660506] 0000000001000026
[   12.660538] 000000011ba91cf0
[   12.660569] 00000001286305a0
[   12.660600]
[   12.660600] GPR08:
[   12.660632]
[   12.660632] GPR08:
[   12.660663] 000000011ba90580
[   12.660695] 0000000128630580
[   12.660727] 0000000000000000
[   12.660758] 0000000000000000
[   12.660790] 0000000000000000
[   12.660821] 0000000000000000
[   12.660852] 0000000000000000
[   12.660883] 0000000000000000
[   12.660915]
[   12.660915] GPR12:
[   12.660946]
[   12.660946] GPR12:
[   12.660978] 0000000000000000
[   12.661010] 0000000000000000
[   12.661042] 00007fffbcdeb680
[   12.661073] 00007fff8746b680
[   12.661105] 0000000000000000
[   12.661136] 0000000000000000
[   12.661167] ffffffffffffffff
[   12.661205] ffffffffffffffff
[   12.661239]
[   12.661239] GPR16:
[   12.661270]
[   12.661270] GPR16:
[   12.661303] ffffffffffffffff
[   12.661335] ffffffffffffffff
[   12.661367] 0000000000000000
[   12.661399] 0000000000000000
[   12.661430] 0000000000000000
[   12.661462] 0000000000000000
[   12.661493] 0000000000000000
[   12.661524] 0000000000000000
[   12.661553]
[   12.661553] GPR20:
[   12.661586]
[   12.661586] GPR20:
[   12.661617] 0000000000000020
[   12.661649] 0000000001000026
[   12.661681] 0000000000000000
[   12.661713] 0000000000000000
[   12.661744] 0000000000000000
[   12.661775] 0000000000000000
[   12.661806] 000000011ba909c0
[   12.661837] 00000001286309c0
[   12.661869]
[   12.661869] GPR24:
[   12.661900]
[   12.661900] GPR24:
[   12.661931] 000000011ba90468
[   12.661964] 0000000128630468
[   12.661996] 00007fffbccfa4a8
[   12.662027] 00007fff8737a4a8
[   12.662059] 00007fffbcd3027c
[   12.662090] 00007fff873b027c
[   12.662121] 000000011ba90580
[   12.662152] 0000000128630580
[   12.662183]
[   12.662183] GPR28:
[   12.662214]
[   12.662214] GPR28:
[   12.662245] 000000011ba92090
[   12.662277] 0000000128632090
[   12.662310] 0000000000000000
[   12.662341] 0000000000000000
[   12.662372] 000000011ba90580
[   12.662403] 0000000128630580
[   12.662435] 0000000000100000
[   12.662466] 0000000000100000
[   12.662497]
[   12.662506] NIP [00007fffbcb9bf54] 0x7fffbcb9bf54
[   12.662574]
[   12.662583] NIP [00007fff8721bf54] 0x7fff8721bf54
[   12.662635] LR [0000000000000000] 0x0
[   12.662684] LR [0000000000000000] 0x0
[   12.662722] --- interrupt: 3000
[   12.662780] --- interrupt: 3000
[   12.662909] Instruction dump:
[   12.662917] Instruction dump:
[   12.662959]
[   12.662964]
[   12.663116] 40820534
[   12.663118] 40820534 e87f0100
[   12.663174] e87f0100 480ca31d
[   12.663215] 480ca31d
[   12.663219] 60000000
[   12.663259] 60000000
[   12.663286] 2c230000
[   12.663315] 2c230000
[   12.663343] 41820228
[   12.663370] 41820228
[   12.663397] 3c82ff7a
[   12.663424] 3c82ff7a
[   12.663452] 38843868
[   12.663478] 38843868
[   12.663502]
[   12.663514] 3c62ff7a
[   12.663526]
[   12.663552] 38633968
[   12.663577] 3c62ff7a
[   12.663605] 48094cfd
[   12.663632] 38633968
[   12.663659] 60000000
[   12.663686] 48094cfd
[   12.663720] <0fe00000> 4bfffa54
[   12.663777] 60000000
[   12.663784] 60420000
[   12.663820] <0fe00000>
[   12.663848] 3d220003
[   12.663875] 4bfffa54
[   12.663905]
[   12.663928] 60420000 3d220003
[   12.664042] ---[ end trace a490e66343f8a080 ]---
[   12.664048] ---[ end trace a490e66343f8a080 ]---
[   12.665664] EXT4-fs (vda): re-mounted. Opts: (null). Quota mode: disabled.
[   12.697492] systemd[1]: Mounting Kernel Configuration File System...
[   12.698557] Kernel attempted to read user page (11ba91cf0) - exploit attempt? (uid: 0)
[   12.698710] ------------[ cut here ]------------
[   12.698754] Bug: Read fault blocked by KUAP!
[   12.698808] WARNING: CPU: 1 PID: 130 at arch/powerpc/mm/fault.c:228 ___do_page_fault+0x6c4/0xc50
[   12.698974] Modules linked in: fuse configfs
[   12.699168] CPU: 1 PID: 130 Comm: mount Tainted: G        W         5.15.78-yocto-standard #1
[   12.699262] NIP:  c00000000006e654 LR: c00000000006e650 CTR: 0000000000000000
[   12.699329] REGS: c00000000a53b620 TRAP: 0700   Tainted: G        W          (5.15.78-yocto-standard)
[   12.699399] MSR:  8000000000021033 <SF,ME,IR,DR,RI,LE>  CR: 24022240  XER: 20040003
[   12.699544] CFAR: c0000000001033b0 IRQMASK: 3
[   12.699544] GPR00: c00000000006e650 c00000000a53b8c0 c000000001b05a00 0000000000000020
[   12.699544] GPR04: c000000001933df8 c000000001933d50 0000000000000001 0000000000000001
[   12.699544] GPR08: c000000001bc3940 0000000000000000 0000000000000000 0000000000002000
[   12.699544] GPR12: c000000001933d70 c00000000ffe1600 0000000000000000 ffffffffffffffff
[   12.699544] GPR16: ffffffffffffffff 0000000000000000 0000000000000000 0000000000000000
[   12.699544] GPR20: 0000000000000020 0000000000000000 0000000000000000 000000011ba909c0
[   12.699544] GPR24: 0000000000000020 000000011ba91cf0 0000000000000000 c000000009d03700
[   12.699544] GPR28: 0000000000000300 c00000000131dee8 000000011ba91cf0 c00000000a53ba20
[   12.700233] NIP [c00000000006e654] ___do_page_fault+0x6c4/0xc50
[   12.700304] LR [c00000000006e650] ___do_page_fault+0x6c0/0xc50
[   12.700373] Call Trace:
[   12.700409] [c00000000a53b8c0] [c00000000006e650] ___do_page_fault+0x6c0/0xc50 (unreliable)
[   12.700508] [c00000000a53b980] [c00000000006ed50] do_page_fault+0x30/0xc0
[   12.700591] [c00000000a53b9b0] [c0000000000088dc] data_access_common_virt+0x19c/0x1f0
[   12.700683] --- interrupt: 300 at __copy_tofrom_user_base+0x320/0x5a4
[   12.700757] NIP:  c00000000009832c LR: c0000000008e8f98 CTR: 0000000000010000
[   12.700819] REGS: c00000000a53ba20 TRAP: 0300   Tainted: G        W          (5.15.78-yocto-standard)
[   12.700888] MSR:  800000000280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 24002440  XER: 20040003
[   12.701066] CFAR: c00000000000c70c DAR: 000000011ba91cf0 DSISR: 08000000 IRQMASK: 0
[   12.701066] GPR00: 0000000000000800 c00000000a53bcc0 c000000001b05a00 c0000000078b0000
[   12.701066] GPR04: 000000011ba91cf0 0000000000010000 0000000000000000 0000000000000000
[   12.701066] GPR08: 00000000000000ff 0000000000000000 0000000000000000 0000000000000000
[   12.701066] GPR12: 00000000003caa54 c00000000ffe1600 0000000000000000 ffffffffffffffff
[   12.701066] GPR16: ffffffffffffffff 0000000000000000 0000000000000000 0000000000000000
[   12.701066] GPR20: 0000000000000020 0000000000000000 0000000000000000 000000011ba909c0
[   12.701066] GPR24: 0000000000000020 000000011ba91cf0 000000011ba909c0 c0000000077e1140
[   12.701066] GPR28: c0000000077e1138 c0000000078b0000 0000000000010000 c000000001b35cf8
[   12.701856] NIP [c00000000009832c] __copy_tofrom_user_base+0x320/0x5a4
[   12.701933] LR [c0000000008e8f98] _copy_from_user+0x98/0x1f0
[   12.702011] --- interrupt: 300
[   12.702056] [c00000000a53bd00] [c00000000045fb74] sys_mount+0xe4/0x4e0
[   12.702164] [c00000000a53bdb0] [c00000000002cfd4] system_call_exception+0x194/0x2f0
[   12.702265] [c00000000a53be10] [c00000000000bd68] system_call_vectored_common+0xe8/0x278
[   12.702361] --- interrupt: 3000 at 0x7fffbcb9bf54
[   12.702442] NIP:  00007fffbcb9bf54 LR: 0000000000000000 CTR: 0000000000000000
[   12.702509] REGS: c00000000a53be80 TRAP: 3000   Tainted: G        W          (5.15.78-yocto-standard)
[   12.702584] MSR:  800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE>  CR: 42002444  XER: 00000000
[   12.702777] IRQMASK: 0
[   12.702777] GPR00: 0000000000000015 00007fffcb3aea20 00007fffbcc87200 000000011ba92090
[   12.702777] GPR04: 000000011ba909c0 000000011ba90580 0000000000000020 000000011ba91cf0
[   12.702777] GPR08: 000000011ba90580 0000000000000000 0000000000000000 0000000000000000
[   12.702777] GPR12: 0000000000000000 00007fffbcdeb680 0000000000000000 ffffffffffffffff
[   12.702777] GPR16: ffffffffffffffff 0000000000000000 0000000000000000 0000000000000000
[   12.702777] GPR20: 0000000000000020 0000000000000000 0000000000000000 000000011ba909c0
[   12.702777] GPR24: 000000011ba90468 00007fffbccfa4a8 00007fffbcd3027c 000000011ba90580
[   12.702777] GPR28: 000000011ba92090 0000000000000000 000000011ba90580 0000000000100000
[   12.703504] NIP [00007fffbcb9bf54] 0x7fffbcb9bf54
[   12.703573] LR [0000000000000000] 0x0
[   12.703630] --- interrupt: 3000
[   12.703683] Instruction dump:
[   12.703740] 40820534 e87f0100 480ca31d 60000000 2c230000 41820228 3c82ff7a 38843868
[   12.703911] 3c62ff7a 38633968 48094cfd 60000000 <0fe00000> 4bfffa54 60420000 3d220003
[   12.704080] ---[ end trace a490e66343f8a081 ]---
Mounting Kernel Configuration File System...
[   12.711960] Kernel attempted to read user page (1286305a0) - exploit attempt? (uid: 0)
[   12.712109] ------------[ cut here ]------------
[   12.712158] Bug: Read fault blocked by KUAP!
[   12.712212] WARNING: CPU: 0 PID: 131 at arch/powerpc/mm/fault.c:228 ___do_page_fault+0x6c4/0xc50
[   12.712343] Modules linked in: fuse configfs
[   12.712445] CPU: 0 PID: 131 Comm: mount Tainted: G        W         5.15.78-yocto-standard #1
[   12.712528] NIP:  c00000000006e654 LR: c00000000006e650 CTR: 0000000000000000
[   12.712584] REGS: c00000000a53f620 TRAP: 0700   Tainted: G        W          (5.15.78-yocto-standard)
[   12.712657] MSR:  8000000000021033 <SF,ME,IR,DR,RI,LE>  CR: 24022240  XER: 20040003
[   12.712790] CFAR: c0000000001033b0 IRQMASK: 3
[   12.712790] GPR00: c00000000006e650 c00000000a53f8c0 c000000001b05a00 0000000000000020
[   12.712790] GPR04: c000000001933df8 c000000001933d50 0000000000000001 0000000000000001
[   12.712790] GPR08: c000000001bc3940 0000000000000000 0000000000000000 0000000000002000
[   12.712790] GPR12: c000000001933d70 c000000001c60000 0000000000000000 ffffffffffffffff
[   12.712790] GPR16: ffffffffffffffff 0000000000000000 0000000000000000 0000000000000000
[   12.712790] GPR20: 0000000001000026 0000000000000000 0000000000000000 00000001286309c0
[   12.712790] GPR24: 0000000001000026 00000001286305a0 0000000000000000 c000000009c95000
[   12.712790] GPR28: 0000000000000300 c00000000131dee8 00000001286305a0 c00000000a53fa20
[   12.713539] NIP [c00000000006e654] ___do_page_fault+0x6c4/0xc50
[   12.713605] LR [c00000000006e650] ___do_page_fault+0x6c0/0xc50
[   12.713672] Call Trace:
[   12.713706] [c00000000a53f8c0] [c00000000006e650] ___do_page_fault+0x6c0/0xc50 (unreliable)
[   12.713828] [c00000000a53f980] [c00000000006ed50] do_page_fault+0x30/0xc0
[   12.713913] [c00000000a53f9b0] [c0000000000088dc] data_access_common_virt+0x19c/0x1f0
[   12.713998] --- interrupt: 300 at __copy_tofrom_user_base+0x320/0x5a4
[   12.714067] NIP:  c00000000009832c LR: c0000000008e8f98 CTR: 0000000000010000
[   12.714137] REGS: c00000000a53fa20 TRAP: 0300   Tainted: G        W          (5.15.78-yocto-standard)
[   12.714206] MSR:  800000000280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 24002440  XER: 00000003
[   12.714380] CFAR: c00000000000c70c DAR: 00000001286305a0 DSISR: 08000000 IRQMASK: 0
[   12.714380] GPR00: 0000000000000800 c00000000a53fcc0 c000000001b05a00 c000000007840000
[   12.714380] GPR04: 00000001286305a0 0000000000010000 0000000000000000 0000000000000000
[   12.714380] GPR08: 00000000000000ff 0000000000000000 0000000000000000 0000000000002000
[   12.714380] GPR12: 00000000002867d2 c000000001c60000 0000000000000000 ffffffffffffffff
[   12.714380] GPR16: ffffffffffffffff 0000000000000000 0000000000000000 0000000000000000
[   12.714380] GPR20: 0000000001000026 0000000000000000 0000000000000000 00000001286309c0
[   12.714380] GPR24: 0000000001000026 00000001286305a0 00000001286309c0 c000000007212138
[   12.714380] GPR28: c000000007212130 c000000007840000 0000000000010000 c000000001b35cf8
[   12.715072] NIP [c00000000009832c] __copy_tofrom_user_base+0x320/0x5a4
[   12.715136] LR [c0000000008e8f98] _copy_from_user+0x98/0x1f0
[   12.715199] --- interrupt: 300
[   12.715256] [c00000000a53fd00] [c00000000045fb74] sys_mount+0xe4/0x4e0
[   12.715334] [c00000000a53fdb0] [c00000000002cfd4] system_call_exception+0x194/0x2f0
[   12.715416] [c00000000a53fe10] [c00000000000bd68] system_call_vectored_common+0xe8/0x278
[   12.715505] --- interrupt: 3000 at 0x7fff8721bf54
[   12.715574] NIP:  00007fff8721bf54 LR: 0000000000000000 CTR: 0000000000000000
[   12.715654] REGS: c00000000a53fe80 TRAP: 3000   Tainted: G        W          (5.15.78-yocto-standard)
[   12.715718] MSR:  800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE>  CR: 42002444  XER: 00000000
[   12.715912] IRQMASK: 0
[   12.715912] GPR00: 0000000000000015 00007ffffed3c0e0 00007fff87307200 0000000128632090
[   12.715912] GPR04: 00000001286309c0 0000000128630580 0000000001000026 00000001286305a0
[   12.715912] GPR08: 0000000128630580 0000000000000000 0000000000000000 0000000000000000
[   12.715912] GPR12: 0000000000000000 00007fff8746b680 0000000000000000 ffffffffffffffff
[   12.715912] GPR16: ffffffffffffffff 0000000000000000 0000000000000000 0000000000000000
[   12.715912] GPR20: 0000000001000026 0000000000000000 0000000000000000 00000001286309c0
[   12.715912] GPR24: 0000000128630468 00007fff8737a4a8 00007fff873b027c 0000000128630580
[   12.715912] GPR28: 0000000128632090 0000000000000000 0000000128630580 0000000000100000
[   12.716616] NIP [00007fff8721bf54] 0x7fff8721bf54
[   12.716672] LR [0000000000000000] 0x0
[   12.716720] --- interrupt: 3000
[   12.716763] Instruction dump:
[   12.716812] 40820534 e87f0100 480ca31d 60000000 2c230000 41820228 3c82ff7a 38843868
[   12.716960] 3c62ff7a 38633968 48094cfd 60000000 <0fe00000> 4bfffa54 60420000 3d220003
[   12.717094] ---[ end trace a490e66343f8a082 ]---

Steps to Reproduce

$ setup.sh --machines=qemuppc64 --dl-layers=1 --distros=wrlinux --accept-eula=yes && source environment-setup-x86_64-wrlinuxsdk-linux && source oe-init-build-env build
$ bitbake wrlinux-image-std
$ runqemu slirp nographic qemuppc64 ext4
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