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memory leak in bio_clone_fast

Status: fixed on 2020/06/30 18:57
Subsystems: block
[Documentation on labels]
Reported-by: syzbot+0265846a0cb9a0547905@syzkaller.appspotmail.com
Fix commit: 7b6620d7db56 block: remove REQ_NOWAIT_INLINE
First crash: 1717d, last: 1717d
▶ ▼ Duplicate bugs (1)
duplicates (1):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
memory leak in blkdev_direct_IO block C 1 1724d 1720d 0/26 closed as dup on 2020/06/28 16:54
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
Re: memory leak in bio_clone_fast 1 (1) 2019/08/14 08:52
memory leak in bio_clone_fast 1 (2) 2019/08/13 21:33

Sample crash report:
executing program
executing program
executing program
executing program
BUG: memory leak
unreferenced object 0xffff8881226da6c0 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 15.840s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da600 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 15.840s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da540 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 15.840s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da6c0 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 16.750s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da600 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 16.750s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da540 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 16.750s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da6c0 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 17.650s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da600 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 17.650s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da540 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 17.650s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da6c0 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 18.550s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da600 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 18.550s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da540 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 18.550s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da6c0 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 19.450s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da600 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 19.450s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da540 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 19.450s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da6c0 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 19.510s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da600 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 19.510s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da540 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 19.510s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da6c0 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 19.560s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da600 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 19.560s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

BUG: memory leak
unreferenced object 0xffff8881226da540 (size 192):
  comm "syz-executor332", pid 6977, jiffies 4294941214 (age 19.560s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 f0 bc 28 81 88 ff ff  ...........(....
    01 c8 60 00 02 0b 00 00 00 00 00 00 00 00 00 00  ..`.............
  backtrace:
    [<00000000b06a638e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000b06a638e>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<00000000b06a638e>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000b06a638e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483
    [<00000000950a289d>] mempool_alloc_slab+0x1e/0x30 mm/mempool.c:513
    [<00000000bfcc27e2>] mempool_alloc+0x64/0x1b0 mm/mempool.c:393
    [<00000000cdf95a4a>] bio_alloc_bioset+0x180/0x2c0 block/bio.c:477
    [<00000000b239bb68>] bio_clone_fast+0x25/0x90 block/bio.c:609
    [<000000005d58c2dc>] bio_split+0x4a/0xd0 block/bio.c:1856
    [<00000000ab943734>] blk_bio_segment_split block/blk-merge.c:250 [inline]
    [<00000000ab943734>] __blk_queue_split+0x355/0x730 block/blk-merge.c:272
    [<00000000e702c0ac>] blk_mq_make_request+0xb0/0x890 block/blk-mq.c:1943
    [<000000003c89773a>] generic_make_request block/blk-core.c:1052 [inline]
    [<000000003c89773a>] generic_make_request+0xf6/0x4a0 block/blk-core.c:994
    [<00000000a4dcaf78>] submit_bio+0x5a/0x1e0 block/blk-core.c:1163
    [<000000003e1ce7f8>] __blkdev_direct_IO fs/block_dev.c:459 [inline]
    [<000000003e1ce7f8>] blkdev_direct_IO+0x2b3/0x6d0 fs/block_dev.c:515
    [<0000000087ec76a4>] generic_file_direct_write+0xb0/0x1a0 mm/filemap.c:3230
    [<00000000ff259b44>] __generic_file_write_iter+0xec/0x230 mm/filemap.c:3413
    [<00000000223d9b6c>] blkdev_write_iter fs/block_dev.c:2026 [inline]
    [<00000000223d9b6c>] blkdev_write_iter+0xbe/0x160 fs/block_dev.c:2003
    [<000000003c4a5c94>] call_write_iter include/linux/fs.h:1870 [inline]
    [<000000003c4a5c94>] aio_write+0x10b/0x1d0 fs/aio.c:1583
    [<00000000581f0c84>] __io_submit_one fs/aio.c:1815 [inline]
    [<00000000581f0c84>] io_submit_one+0x59b/0xe50 fs/aio.c:1862

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/08/13 13:05 upstream d45331b00ddb 8620c2c2 .config console log report syz C ci-upstream-gce-leak
* Struck through repros no longer work on HEAD.