Messages in this thread | | | Date | Sun, 08 Dec 2019 11:35:08 -0800 | Subject | memory leak in erase_aeb | From | syzbot <> |
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Hello,
syzbot found the following crash on:
HEAD commit: ad910e36 pipe: fix poll/select race introduced by the pipe.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16080232e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=3beca47aecbf4a9c dashboard link: https://syzkaller.appspot.com/bug?extid=f317896aae32eb281a58 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14b527f2e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+f317896aae32eb281a58@syzkaller.appspotmail.com
BUG: memory leak unreferenced object 0xffff8881225039a0 (size 32): comm "syz-executor.0", pid 7318, jiffies 4294950453 (age 8.280s) hex dump (first 32 bytes): 00 00 00 00 03 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00 ................ backtrace: [<000000003a9d0e7e>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<000000003a9d0e7e>] slab_post_alloc_hook mm/slab.h:586 [inline] [<000000003a9d0e7e>] slab_alloc mm/slab.c:3320 [inline] [<000000003a9d0e7e>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484 [<00000000b53dfd0a>] erase_aeb+0x2a/0x100 drivers/mtd/ubi/wl.c:1691 [<000000005ccfba82>] ubi_wl_init+0x1ae/0x600 drivers/mtd/ubi/wl.c:1758 [<000000002350928f>] ubi_attach+0x665/0x18e7 drivers/mtd/ubi/attach.c:1605 [<0000000055aac88b>] ubi_attach_mtd_dev+0x5b3/0xd40 drivers/mtd/ubi/build.c:946 [<00000000071dc178>] ctrl_cdev_ioctl+0x149/0x1c0 drivers/mtd/ubi/cdev.c:1043 [<000000004c359338>] vfs_ioctl fs/ioctl.c:47 [inline] [<000000004c359338>] file_ioctl fs/ioctl.c:545 [inline] [<000000004c359338>] do_vfs_ioctl+0x551/0x890 fs/ioctl.c:732 [<000000002f3b4a0e>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:749 [<0000000071dee951>] __do_sys_ioctl fs/ioctl.c:756 [inline] [<0000000071dee951>] __se_sys_ioctl fs/ioctl.c:754 [inline] [<0000000071dee951>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:754 [<0000000069d4ede5>] do_syscall_64+0x73/0x220 arch/x86/entry/common.c:294 [<000000001a44675f>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
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