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Message-ID: <20171030141136.frvuutbxggebtb4u@codemonkey.org.uk>
Date:   Mon, 30 Oct 2017 10:11:36 -0400
From:   Dave Jones <davej@...emonkey.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Linux Kernel <linux-kernel@...r.kernel.org>
Subject: [4.14-rc7] task struct corruption after fork

Something scary for halloween. Only saw this once so far.

[10737.049397] =============================================================================
[10737.052151] BUG task_struct (Not tainted): Padding overwritten. 0xffff880458befef8-0xffff880458beffcf
[10737.055172] -----------------------------------------------------------------------------
[10737.061267] Disabling lock debugging due to kernel taint
[10737.064384] INFO: Slab 0xffffea001162fa00 objects=4 used=4 fp=0x          (null) flags=0x2ffc00000008100
[10737.067771] CPU: 2 PID: 26357 Comm: trinity-c13 Tainted: G    B           4.14.0-rc7-think+ #1 
[10737.074807] Call Trace:
[10737.078329]  dump_stack+0xbc/0x145
[10737.081919]  ? dma_virt_map_sg+0xfb/0xfb
[10737.085566]  ? lock_release+0x890/0x890
[10737.089264]  slab_err+0xad/0xd0
[10737.092997]  ? memchr_inv+0x160/0x180
[10737.096769]  slab_pad_check.part.43+0xfa/0x160
[10737.100681]  ? copy_process.part.42+0x101c/0x29e0
[10737.104600]  check_slab+0xa6/0xd0
[10737.108563]  alloc_debug_processing+0x85/0x1b0
[10737.112612]  ___slab_alloc+0x525/0x5d0
[10737.116672]  ? __lock_is_held+0x2e/0xd0
[10737.120810]  ? copy_process.part.42+0x101c/0x29e0
[10737.125019]  ? ___might_sleep.part.69+0x118/0x320
[10737.129267]  ? copy_process.part.42+0x101c/0x29e0
[10737.133556]  ? __slab_alloc+0x3e/0x80
[10737.137803]  __slab_alloc+0x3e/0x80
[10737.142100]  kmem_cache_alloc_node+0xbd/0x360
[10737.146464]  ? copy_process.part.42+0x101c/0x29e0
[10737.150932]  copy_process.part.42+0x101c/0x29e0
[10737.155473]  ? jbd2_buffer_abort_trigger+0x50/0x50
[10737.160040]  ? __might_sleep+0x58/0xe0
[10737.164670]  ? __cleanup_sighand+0x30/0x30
[10737.169308]  ? mark_lock+0x16f/0x9b0
[10737.174016]  ? balance_dirty_pages_ratelimited+0x744/0x10d0
[10737.178868]  ? print_irqtrace_events+0x110/0x110
[10737.183779]  ? mark_lock+0x16f/0x9b0
[10737.188731]  ? print_irqtrace_events+0x110/0x110
[10737.193696]  ? block_write_end+0x150/0x150
[10737.198745]  ? match_held_lock+0xa6/0x410
[10737.203887]  ? save_trace+0x1c0/0x1c0
[10737.209040]  ? native_sched_clock+0xf9/0x1a0
[10737.214255]  ? cyc2ns_read_end+0x10/0x10
[10737.219500]  ? ext4_da_write_end+0x301/0x690
[10737.224771]  ? sched_clock_cpu+0x14/0xf0
[10737.230077]  ? __lock_acquire+0x6b3/0x2050
[10737.235438]  ? sched_clock_cpu+0x14/0xf0
[10737.240833]  ? debug_check_no_locks_freed+0x1a0/0x1a0
[10737.246272]  ? debug_check_no_locks_freed+0x1a0/0x1a0
[10737.251754]  ? lock_downgrade+0x310/0x310
[10737.257255]  ? __lock_page_killable+0x100/0x100
[10737.262801]  ? __mnt_drop_write_file+0x26/0x40
[10737.268432]  ? current_time+0x70/0x70
[10737.274106]  ? fsnotify+0xe99/0x1020
[10737.279744]  ? up_write+0x97/0xe0
[10737.285470]  ? match_held_lock+0x93/0x410
[10737.291287]  ? save_trace+0x1c0/0x1c0
[10737.297097]  ? __fsnotify_update_child_dentry_flags.part.2+0x160/0x160
[10737.303127]  ? native_sched_clock+0xf9/0x1a0
[10737.309193]  ? cyc2ns_read_end+0x10/0x10
[10737.315280]  ? ext4_file_mmap+0xb0/0xb0
[10737.321446]  ? match_held_lock+0x93/0x410
[10737.327627]  ? sched_clock_cpu+0x14/0xf0
[10737.333831]  ? save_trace+0x1c0/0x1c0
[10737.340108]  ? native_sched_clock+0xf9/0x1a0
[10737.346408]  ? cyc2ns_read_end+0x10/0x10
[10737.352788]  _do_fork+0x1c4/0xa30
[10737.359190]  ? fork_idle+0x120/0x120
[10737.365607]  ? lock_downgrade+0x310/0x310
[10737.371992]  ? native_sched_clock+0xf9/0x1a0
[10737.378485]  ? cyc2ns_read_end+0x10/0x10
[10737.385060]  ? syscall_trace_enter+0x2a6/0x670
[10737.391669]  ? exit_to_usermode_loop+0x180/0x180
[10737.398368]  ? __lock_is_held+0x2e/0xd0
[10737.405116]  ? rcu_read_lock_sched_held+0x90/0xa0
[10737.411917]  ? __context_tracking_exit.part.4+0x223/0x290
[10737.418798]  ? context_tracking_recursion_enter+0x50/0x50
[10737.425758]  ? __task_pid_nr_ns+0x1c4/0x300
[10737.432746]  ? free_pidmap.isra.0+0x40/0x40
[10737.439743]  ? SyS_read+0x140/0x140
[10737.446788]  ? mark_held_locks+0x1b/0xa0
[10737.453883]  ? do_syscall_64+0xae/0x400
[10737.461040]  ? ptregs_sys_rt_sigreturn+0x10/0x10
[10737.468260]  do_syscall_64+0x182/0x400
[10737.475508]  ? syscall_return_slowpath+0x270/0x270
[10737.482801]  ? rcu_read_lock_sched_held+0x90/0xa0
[10737.490156]  ? __context_tracking_exit.part.4+0x223/0x290
[10737.497608]  ? mark_held_locks+0x1b/0xa0
[10737.505087]  ? return_from_SYSCALL_64+0x2d/0x7a
[10737.512662]  ? trace_hardirqs_on_caller+0x17a/0x250
[10737.520339]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[10737.527991]  entry_SYSCALL64_slow_path+0x25/0x25
[10737.535684] RIP: 0033:0x7f8917f3837b
[10737.543411] RSP: 002b:00007ffdca212e00 EFLAGS: 00000246
[10737.551299]  ORIG_RAX: 0000000000000038
[10737.559237] RAX: ffffffffffffffda RBX: 00007ffdca212e00 RCX: 00007f8917f3837b
[10737.567378] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[10737.575550] RBP: 00007ffdca212e50 R08: 00007f891863a700 R09: 00007ffdca3ef080
[10737.583786] R10: 00007f891863a9d0 R11: 0000000000000246 R12: 0000000000000000
[10737.592129] R13: 0000000000000020 R14: 0000000000000000 R15: 0000000000000000
[10737.600521] Padding ffff880458bef3d0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.609157] Padding ffff880458bef3e0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.617611] Padding ffff880458bef3f0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.625996] Padding ffff880458bef400: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.634210] Padding ffff880458bef410: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.642347] Padding ffff880458bef420: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.650478] Padding ffff880458bef430: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.658491] Padding ffff880458bef440: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.666253] Padding ffff880458bef450: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.673857] Padding ffff880458bef460: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.681274] Padding ffff880458bef470: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.688639] Padding ffff880458bef480: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.695817] Padding ffff880458bef490: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.702876] Padding ffff880458bef4a0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.709815] Padding ffff880458bef4b0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.716632] Padding ffff880458bef4c0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.723412] Padding ffff880458bef4d0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.730125] Padding ffff880458bef4e0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.736800] Padding ffff880458bef4f0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.743468] Padding ffff880458bef500: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.750060] Padding ffff880458bef510: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.756622] Padding ffff880458bef520: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.763062] Padding ffff880458bef530: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.769451] Padding ffff880458bef540: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.775767] Padding ffff880458bef550: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.782003] Padding ffff880458bef560: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.788254] Padding ffff880458bef570: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.794389] Padding ffff880458bef580: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.800523] Padding ffff880458bef590: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.806573] Padding ffff880458bef5a0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.812537] Padding ffff880458bef5b0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.818485] Padding ffff880458bef5c0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.824358] Padding ffff880458bef5d0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.830104] Padding ffff880458bef5e0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.835827] Padding ffff880458bef5f0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.841458] Padding ffff880458bef600: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.847007] Padding ffff880458bef610: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.852553] Padding ffff880458bef620: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.858000] Padding ffff880458bef630: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.863391] Padding ffff880458bef640: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.868671] Padding ffff880458bef650: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.873887] Padding ffff880458bef660: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.879020] Padding ffff880458bef670: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.884165] Padding ffff880458bef680: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.889218] Padding ffff880458bef690: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.894205] Padding ffff880458bef6a0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.899142] Padding ffff880458bef6b0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.904016] Padding ffff880458bef6c0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.908859] Padding ffff880458bef6d0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.913589] Padding ffff880458bef6e0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.918329] Padding ffff880458bef6f0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.923007] Padding ffff880458bef700: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.927616] Padding ffff880458bef710: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.932230] Padding ffff880458bef720: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.936768] Padding ffff880458bef730: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.941245] Padding ffff880458bef740: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.945623] Padding ffff880458bef750: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.949959] Padding ffff880458bef760: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.954248] Padding ffff880458bef770: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.958501] Padding ffff880458bef780: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.962697] Padding ffff880458bef790: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.966862] Padding ffff880458bef7a0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.970915] Padding ffff880458bef7b0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.974850] Padding ffff880458bef7c0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.978716] Padding ffff880458bef7d0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.982551] Padding ffff880458bef7e0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.986339] Padding ffff880458bef7f0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.990056] Padding ffff880458bef800: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.993744] Padding ffff880458bef810: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10737.997353] Padding ffff880458bef820: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.000962] Padding ffff880458bef830: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.004499] Padding ffff880458bef840: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.007986] Padding ffff880458bef850: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.011405] Padding ffff880458bef860: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.014768] Padding ffff880458bef870: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.018094] Padding ffff880458bef880: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.021363] Padding ffff880458bef890: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.024561] Padding ffff880458bef8a0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.027694] Padding ffff880458bef8b0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.030730] Padding ffff880458bef8c0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.033700] Padding ffff880458bef8d0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.036591] Padding ffff880458bef8e0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.039400] Padding ffff880458bef8f0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.042138] Padding ffff880458bef900: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.044875] Padding ffff880458bef910: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.047539] Padding ffff880458bef920: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.050125] Padding ffff880458bef930: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.052662] Padding ffff880458bef940: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.055122] Padding ffff880458bef950: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.057500] Padding ffff880458bef960: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.059829] Padding ffff880458bef970: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.062030] Padding ffff880458bef980: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.064189] Padding ffff880458bef990: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.066259] Padding ffff880458bef9a0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.068252] Padding ffff880458bef9b0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.070197] Padding ffff880458bef9c0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.072113] Padding ffff880458bef9d0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.073936] Padding ffff880458bef9e0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.075706] Padding ffff880458bef9f0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.077368] Padding ffff880458befa00: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.078905] Padding ffff880458befa10: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.080377] Padding ffff880458befa20: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.081741] Padding ffff880458befa30: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.083026] Padding ffff880458befa40: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.084297] Padding ffff880458befa50: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.085370] Padding ffff880458befa60: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.086450] Padding ffff880458befa70: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.087547] Padding ffff880458befa80: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.088613] Padding ffff880458befa90: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.089682] Padding ffff880458befaa0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.090749] Padding ffff880458befab0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.091834] Padding ffff880458befac0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.092903] Padding ffff880458befad0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.093967] Padding ffff880458befae0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.095030] Padding ffff880458befaf0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.096120] Padding ffff880458befb00: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.097236] Padding ffff880458befb10: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.098300] Padding ffff880458befb20: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.099383] Padding ffff880458befb30: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.100448] Padding ffff880458befb40: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.101514] Padding ffff880458befb50: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.102582] Padding ffff880458befb60: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.103675] Padding ffff880458befb70: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.104742] Padding ffff880458befb80: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.105804] Padding ffff880458befb90: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.106859] Padding ffff880458befba0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.107938] Padding ffff880458befbb0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.108999] Padding ffff880458befbc0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.110062] Padding ffff880458befbd0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.111130] Padding ffff880458befbe0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.112223] Padding ffff880458befbf0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.113296] Padding ffff880458befc00: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.114356] Padding ffff880458befc10: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.115431] Padding ffff880458befc20: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.116484] Padding ffff880458befc30: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.117548] Padding ffff880458befc40: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.118617] Padding ffff880458befc50: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.119710] Padding ffff880458befc60: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.120773] Padding ffff880458befc70: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.121839] Padding ffff880458befc80: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.122902] Padding ffff880458befc90: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.123988] Padding ffff880458befca0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.125052] Padding ffff880458befcb0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.126121] Padding ffff880458befcc0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.127199] Padding ffff880458befcd0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.128280] Padding ffff880458befce0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.129352] Padding ffff880458befcf0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.130427] Padding ffff880458befd00: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.131518] Padding ffff880458befd10: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.132584] Padding ffff880458befd20: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.133649] Padding ffff880458befd30: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.134697] Padding ffff880458befd40: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.135766] Padding ffff880458befd50: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.136812] Padding ffff880458befd60: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.137857] Padding ffff880458befd70: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.138909] Padding ffff880458befd80: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.139977] Padding ffff880458befd90: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.141029] Padding ffff880458befda0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.142080] Padding ffff880458befdb0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.143139] Padding ffff880458befdc0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.144214] Padding ffff880458befdd0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.145271] Padding ffff880458befde0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.146320] Padding ffff880458befdf0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.147388] Padding ffff880458befe00: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.148437] Padding ffff880458befe10: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.149486] Padding ffff880458befe20: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.150535] Padding ffff880458befe30: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.151606] Padding ffff880458befe40: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.152655] Padding ffff880458befe50: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.153708] Padding ffff880458befe60: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.154753] Padding ffff880458befe70: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.155827] Padding ffff880458befe80: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.156880] Padding ffff880458befe90: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.157930] Padding ffff880458befea0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.158973] Padding ffff880458befeb0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.160046] Padding ffff880458befec0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.161085] Padding ffff880458befed0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.162127] Padding ffff880458befee0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.163174] Padding ffff880458befef0: 5a 5a 5a 5a 5a 5a 5a 5a 1e 2d 17 81 ff ff ff ff  ZZZZZZZZ.-......
[10738.164297] Padding ffff880458beff00: ec da 26 84 ff ff ff ff 01 e0 17 8b 00 ed ff ff  ..&.............
[10738.165476] Padding ffff880458beff10: e2 37 17 81 ff ff ff ff e0 db 26 84 ff ff ff ff  .7........&.....
[10738.166692] Padding ffff880458beff20: 08 00 bf 58 04 88 ff ff 00 0d 59 84 ff ff ff ff  ...X......Y.....
[10738.167985] Padding ffff880458beff30: 05 00 00 00 00 00 00 00 00 2d 17 81 ff ff ff ff  .........-......
[10738.169300] Padding ffff880458beff40: 01 00 00 00 00 00 00 00 ed df 17 8b 00 f1 ff 1f  ................
[10738.170651] Padding ffff880458beff50: f0 00 bf 58 04 88 ff ff f9 df 17 8b 00 ed ff ff  ...X............
[10738.172076] Padding ffff880458beff60: 00 00 00 00 00 fc ff df b3 8a b5 41 00 00 00 00  ...........A....
[10738.173540] Padding ffff880458beff70: a8 49 a3 82 ff ff ff ff 40 35 17 81 ff ff ff ff  .I......@.......
[10738.175095] Padding ffff880458beff80: 5a 5a 5a 5a 5a 5a 5a 5a 80 f0 50 84 ff ff ff ff  ZZZZZZZZ..P.....
[10738.176722] Padding ffff880458beff90: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.178385] Padding ffff880458beffa0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.180082] Padding ffff880458beffb0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
[10738.181758] Padding ffff880458beffc0: 5a 5a 5a 5a 5a 5a 5a 5a 80 0a 59 84 ff ff ff ff  ZZZZZZZZ..Y.....
[10738.183501] FIX task_struct: Restoring 0xffff880458bef3d0-0xffff880458beffcf=0x5a

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