2019/11/19 08:47:53 executed programs: 23
2019/11/19 08:47:59 executed programs: 39
2019/11/19 08:48:05 executed programs: 55
BUG: memory leak
unreferenced object 0xffff8881071e4800 (size 2048):
  comm "syz-executor.4", pid 7371, jiffies 4294950053 (age 26.890s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    20 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00   ...............
  backtrace:
    [<00000000c091b3ae>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000c091b3ae>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<00000000c091b3ae>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000c091b3ae>] __do_kmalloc mm/slab.c:3653 [inline]
    [<00000000c091b3ae>] __kmalloc+0x169/0x300 mm/slab.c:3664
    [<00000000c5502750>] kmalloc include/linux/slab.h:561 [inline]
    [<00000000c5502750>] bio_alloc_bioset+0x1b8/0x2c0 block/bio.c:440
    [<000000007de9d8e1>] bio_kmalloc include/linux/bio.h:405 [inline]
    [<000000007de9d8e1>] bio_copy_user_iov+0x121/0x4d0 block/bio.c:1248
    [<000000001d3f46f0>] __blk_rq_map_user_iov block/blk-map.c:73 [inline]
    [<000000001d3f46f0>] blk_rq_map_user_iov+0xc6/0x2b0 block/blk-map.c:142
    [<0000000043263fcb>] blk_rq_map_user+0x71/0xb0 block/blk-map.c:172
    [<000000009f6f9075>] sg_start_req drivers/scsi/sg.c:1813 [inline]
    [<000000009f6f9075>] sg_common_write.isra.0+0x619/0xa10 drivers/scsi/sg.c:809
    [<0000000014d66672>] sg_new_write.isra.0+0x25f/0x3e0 drivers/scsi/sg.c:778
    [<00000000cef62283>] sg_write.part.0+0x46b/0x570 drivers/scsi/sg.c:638
    [<000000009049019b>] sg_write+0x44/0x64 drivers/scsi/sg.c:617
    [<00000000c25cae80>] do_loop_readv_writev fs/read_write.c:717 [inline]
    [<00000000c25cae80>] do_loop_readv_writev fs/read_write.c:701 [inline]
    [<00000000c25cae80>] do_iter_write fs/read_write.c:972 [inline]
    [<00000000c25cae80>] do_iter_write+0x1da/0x230 fs/read_write.c:951
    [<00000000700fd26b>] vfs_writev+0xcb/0x130 fs/read_write.c:1015
    [<00000000334718d6>] do_writev+0x89/0x180 fs/read_write.c:1058
    [<000000009085120d>] __do_sys_writev fs/read_write.c:1131 [inline]
    [<000000009085120d>] __se_sys_writev fs/read_write.c:1128 [inline]
    [<000000009085120d>] __x64_sys_writev+0x20/0x30 fs/read_write.c:1128
    [<000000003337a805>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290
    [<00000000e4915506>] entry_SYSCALL_64_after_hwframe+0x44/0xa9