SNB: GEM tests - fail/incomplete - BUG buffer_head (Not tainted): Redzone overwritten
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_9283/shard-snb6/igt@gem_exec_gttfill@all.html
<6> [134.844877] Console: switching to colour dummy device 80x25
<6> [134.844966] [IGT] gem_exec_gttfill: executing
<6> [134.855279] [IGT] gem_exec_gttfill: starting subtest all
<3> [134.902304] =============================================================================
<3> [134.902686] BUG buffer_head (Not tainted): Redzone overwritten
<3> [134.902715] -----------------------------------------------------------------------------
<4> [134.902762] Disabling lock debugging due to kernel taint
<3> [134.902764] INFO: 0x000000006dc5f6ba-0x000000005b40168e @offset=0. First byte 0x0 instead of 0xcc
<3> [134.902772] INFO: Allocated in alloc_buffer_head+0x15/0x90 age=52676 cpu=6 pid=198
<3> [134.902778] __slab_alloc.isra.87.constprop.95+0x7e/0x90
<3> [134.902782] kmem_cache_alloc+0x668/0x760
<3> [134.902786] alloc_buffer_head+0x15/0x90
<3> [134.902789] alloc_page_buffers+0xb6/0x2b0
<3> [134.902792] __getblk_gfp+0x196/0x330
<3> [134.902797] jbd2_journal_get_descriptor_buffer+0x51/0xf0
<3> [134.902800] journal_submit_commit_record.part.23+0x32/0x210
<3> [134.902804] jbd2_journal_commit_transaction+0x1919/0x2050
<3> [134.902808] kjournald2+0xc7/0x2b0
<3> [134.902812] kthread+0x146/0x170
<3> [134.902815] ret_from_fork+0x22/0x30
<3> [134.902819] INFO: Freed in free_buffer_head+0x1c/0x60 age=52676 cpu=6 pid=198
<3> [134.902825] kmem_cache_free+0x6e4/0x720
<3> [134.902828] free_buffer_head+0x1c/0x60
<3> [134.902831] jbd2_journal_commit_transaction+0x1338/0x2050
<3> [134.902835] kjournald2+0xc7/0x2b0
<3> [134.902838] kthread+0x146/0x170
<3> [134.902841] ret_from_fork+0x22/0x30
<3> [134.902844] INFO: Slab 0x00000000030a602a objects=32 used=32 fp=0x0000000000000000 flags=0x8000000000010201
<3> [134.902850] INFO: Object 0x000000006983ba70 @offset=8 fp=0x0000000000000000
<3> [134.902856] Redzone 00000000: 00 00 00 00 cc cc cc cc ........
<3> [134.902861] Object 00000000: 19 00 00 00 00 00 00 00 08 c0 16 33 81 88 ff ff ...........3....
<3> [134.902866] Object 00000010: c0 4f c9 04 00 ea ff ff 07 d6 d8 00 00 00 00 00 .O..............
<3> [134.902871] Object 00000020: 00 10 00 00 00 00 00 00 00 f0 53 32 81 88 ff ff ..........S2....
<3> [134.902876] Object 00000030: 80 87 41 00 81 88 ff ff c0 cd 3a 81 ff ff ff ff ..A.......:.....
<3> [134.902881] Object 00000040: 00 00 00 00 00 00 00 00 50 c0 16 33 81 88 ff ff ........P..3....
<3> [134.902886] Object 00000050: 50 c0 16 33 81 88 ff ff 00 00 00 00 00 00 00 00 P..3............
<3> [134.902891] Object 00000060: 00 00 00 00 00 00 00 00 00 00 00 00 ad 4e ad de .............N..
<3> [134.902896] Object 00000070: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 ................
<3> [134.902901] Object 00000080: f0 61 f2 83 ff ff ff ff 00 00 00 00 00 00 00 00 .a..............
<3> [134.902906] Object 00000090: 00 00 00 00 00 00 00 00 99 72 32 82 ff ff ff ff .........r2.....
<3> [134.902911] Object 000000a0: 00 00 02 00 00 00 00 00 ........
<3> [134.902916] Redzone 00000000: cc cc cc cc cc cc cc cc ........
<3> [134.902921] Padding 00000000: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ
<4> [134.902926] CPU: 1 PID: 1286 Comm: gem_exec_gttfil Tainted: G B 5.10.0-rc2-CI-CI_DRM_9283+ #1
<4> [134.902927] Hardware name: Dell Inc. XPS 8300 /0Y2MRG, BIOS A06 10/17/2011
<4> [134.902928] Call Trace:
<4> [134.902932] dump_stack+0x77/0x97
<4> [134.902935] check_bytes_and_report.cold.108+0x55/0x8c
<4> [134.902937] check_object+0x167/0x280
<4> [134.902939] free_debug_processing+0x157/0x320
<4> [134.902941] ? free_buffer_head+0x1c/0x60
<4> [134.902943] __slab_free+0x1ef/0x540
<4> [134.902946] ? _raw_spin_unlock_irqrestore+0x42/0x50
<4> [134.902948] ? _raw_spin_unlock_irqrestore+0x2f/0x50
<4> [134.902950] ? debug_check_no_obj_freed+0x111/0x1e0
<4> [134.902952] kmem_cache_free+0x6e4/0x720
<4> [134.902954] ? free_buffer_head+0x1c/0x60
<4> [134.902955] free_buffer_head+0x1c/0x60
<4> [134.902957] try_to_free_buffers+0xce/0x1b0
<4> [134.902960] jbd2_journal_try_to_free_buffers+0x121/0x1a0
<4> [134.902963] invalidate_inode_page+0x93/0xf0
<4> [134.902964] __invalidate_mapping_pages+0x17b/0x420
<4> [134.902968] ? __lock_acquire+0x5ff/0x2730
<4> [134.902973] drop_pagecache_sb+0x87/0x110
<4> [134.902975] ? dump_vma_snapshot+0x2e0/0x2e0
<4> [134.902977] iterate_supers+0x87/0xf0
<4> [134.902979] drop_caches_sysctl_handler+0x4f/0x80
<4> [134.902981] proc_sys_call_handler+0x14d/0x1e0
<4> [134.902984] new_sync_write+0x11d/0x1b0
<4> [134.902986] vfs_write+0x198/0x230
<4> [134.902988] ksys_write+0x5a/0xd0
<4> [134.902989] do_syscall_64+0x33/0x80
<4> [134.902991] entry_SYSCALL_64_after_hwframe+0x44/0xa9
<4> [134.902992] RIP: 0033:0x7f2a02bcf281
<4> [134.902994] Code: c3 0f 1f 84 00 00 00 00 00 48 8b 05 59 8d 20 00 c3 0f 1f 84 00 00 00 00 00 8b 05 8a d1 20 00 85 c0 75 16 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 57 f3 c3 0f 1f 44 00 00 41 54 55 49 89 d4 53
<4> [134.902995] RSP: 002b:00007fffef1b1e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
<4> [134.902997] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f2a02bcf281
<4> [134.902998] RDX: 0000000000000002 RSI: 00007f2a02e56f23 RDI: 0000000000000009
<4> [134.902999] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
<4> [134.903000] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2a02e56f07
<4> [134.903001] R13: 0000000000000008 R14: 00007fffef1b1fb0 R15: 0000000000000000
<3> [134.903004] FIX buffer_head: Restoring 0x000000006dc5f6ba-0x000000005b40168e=0xcc
<3> [134.903010] FIX buffer_head: Object at 0x000000006983ba70 not freed
<6> [134.979678] Console: switching to colour frame buffer device 128x48
<7> [134.983603] i915 0000:00:02.0: [drm:intel_fbc_enable [i915]] reserved 6291456 bytes of contiguous stolen space for FBC, threshold: 1
<7> [134.983669] i915 0000:00:02.0: [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
<7> [134.994229] i915 0000:00:02.0: [drm:__intel_fbc_disable [i915]] Disabling FBC on pipe A