[Bug 204371] BUG kmalloc-4k (Tainted: G W ): Object padding overwritten
From: <hidden>
Date: 2019-08-09 12:37:50
https://bugzilla.kernel.org/show_bug.cgi?id=204371
--- Comment #11 from mpe@ellerman.id.au ---bugzilla-daemon@bugzilla.kernel.org writes:
quoted hunk
https://bugzilla.kernel.org/show_bug.cgi?id=204371--- Comment #10 from David Sterba (dsterba@suse.com) ---In my case it happened on 5.3-rc3, with a strestest. The same machine has been running fstests periodically, with slab debug on, but there are no slab reports like that. [ 8516.870046] BUG kmalloc-4k (Not tainted): Poison overwritten [ 8516.875873] ----------------------------------------------------------------------------- [ 8516.885864] Disabling lock debugging due to kernel taint [ 8516.891312] INFO: 0x000000001c70c8c9-0x000000003cd1e164. First byte 0x16 instead of 0x6b [ 8516.899717] INFO: Allocated in btrfs_read_tree_root+0x46/0x120 [btrfs] age=1769 cpu=7 pid=8717 [ 8516.908544] __slab_alloc.isra.53+0x3e/0x70 [ 8516.912861] kmem_cache_alloc_trace+0x1b0/0x330 [ 8516.917581] btrfs_read_tree_root+0x46/0x120 [btrfs] [ 8516.922737] btrfs_read_fs_root+0xe/0x40 [btrfs] [ 8516.927552] create_reloc_root+0x17f/0x2a0 [btrfs] [ 8516.932536] btrfs_init_reloc_root+0x72/0xe0 [btrfs] [ 8516.937686] record_root_in_trans+0xbb/0xf0 [btrfs] [ 8516.942750] btrfs_record_root_in_trans+0x50/0x70 [btrfs] [ 8516.948340] start_transaction+0xa1/0x550 [btrfs] [ 8516.953237] __btrfs_prealloc_file_range+0xca/0x490 [btrfs] [ 8516.959003] btrfs_prealloc_file_range+0x10/0x20 [btrfs] [ 8516.964509] prealloc_file_extent_cluster+0x13e/0x2b0 [btrfs] [ 8516.970447] relocate_file_extent_cluster+0x8d/0x530 [btrfs] [ 8516.976305] relocate_data_extent+0x80/0x110 [btrfs] [ 8516.981469] relocate_block_group+0x473/0x720 [btrfs] [ 8516.986711] btrfs_relocate_block_group+0x15f/0x2c0 [btrfs]
So this is looking more like it could be a btrfs bug, given you've both hit it using btrfs but on different platforms. cheers -- You are receiving this mail because: You are on the CC list for the bug.