* memory leak in erase_aeb
@ 2019-12-08 19:35 syzbot
2020-01-11 17:19 ` syzbot
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2019-12-08 19:35 UTC (permalink / raw)
To: linux-kernel, linux-mtd, miquel.raynal, richard, syzkaller-bugs,
vigneshr
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
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: memory leak in erase_aeb
2019-12-08 19:35 memory leak in erase_aeb syzbot
@ 2020-01-11 17:19 ` syzbot
0 siblings, 0 replies; 2+ messages in thread
From: syzbot @ 2020-01-11 17:19 UTC (permalink / raw)
To: linux-kernel, linux-mtd, miquel.raynal, richard, syzkaller-bugs,
vigneshr
syzbot has found a reproducer for the following crash on:
HEAD commit: bef1d882 Merge tag 'pstore-v5.5-rc6' of git://git.kernel.o..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=158a51b9e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=e479cb92d5ce3196
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=132269e1e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1247d58ee00000
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 0xffff888127cecb00 (size 32):
comm "syz-executor527", pid 7144, jiffies 4294957528 (age 23.750s)
hex dump (first 32 bytes):
00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de ........".......
00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00 ................
backtrace:
[<0000000029f9ef6c>] kmemleak_alloc_recursive
include/linux/kmemleak.h:43 [inline]
[<0000000029f9ef6c>] slab_post_alloc_hook mm/slab.h:586 [inline]
[<0000000029f9ef6c>] slab_alloc mm/slab.c:3320 [inline]
[<0000000029f9ef6c>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
[<000000003092c936>] erase_aeb+0x2a/0x100 drivers/mtd/ubi/wl.c:1691
[<00000000d507b66e>] ubi_wl_init+0x1ae/0x600 drivers/mtd/ubi/wl.c:1758
[<0000000072e7d762>] ubi_attach+0x665/0x18e7
drivers/mtd/ubi/attach.c:1605
[<0000000024d645cb>] ubi_attach_mtd_dev+0x5b3/0xd40
drivers/mtd/ubi/build.c:946
[<00000000e6600cef>] ctrl_cdev_ioctl+0x149/0x1c0
drivers/mtd/ubi/cdev.c:1043
[<000000001253992f>] vfs_ioctl fs/ioctl.c:47 [inline]
[<000000001253992f>] file_ioctl fs/ioctl.c:545 [inline]
[<000000001253992f>] do_vfs_ioctl+0x551/0x890 fs/ioctl.c:732
[<00000000c49e8c94>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:749
[<00000000261db07c>] __do_sys_ioctl fs/ioctl.c:756 [inline]
[<00000000261db07c>] __se_sys_ioctl fs/ioctl.c:754 [inline]
[<00000000261db07c>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:754
[<000000004f01dc3e>] do_syscall_64+0x73/0x220
arch/x86/entry/common.c:294
[<000000002de81d29>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
BUG: memory leak
unreferenced object 0xffff888127cecb00 (size 32):
comm "syz-executor527", pid 7144, jiffies 4294957528 (age 26.350s)
hex dump (first 32 bytes):
00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de ........".......
00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00 ................
backtrace:
[<0000000029f9ef6c>] kmemleak_alloc_recursive
include/linux/kmemleak.h:43 [inline]
[<0000000029f9ef6c>] slab_post_alloc_hook mm/slab.h:586 [inline]
[<0000000029f9ef6c>] slab_alloc mm/slab.c:3320 [inline]
[<0000000029f9ef6c>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
[<000000003092c936>] erase_aeb+0x2a/0x100 drivers/mtd/ubi/wl.c:1691
[<00000000d507b66e>] ubi_wl_init+0x1ae/0x600 drivers/mtd/ubi/wl.c:1758
[<0000000072e7d762>] ubi_attach+0x665/0x18e7
drivers/mtd/ubi/attach.c:1605
[<0000000024d645cb>] ubi_attach_mtd_dev+0x5b3/0xd40
drivers/mtd/ubi/build.c:946
[<00000000e6600cef>] ctrl_cdev_ioctl+0x149/0x1c0
drivers/mtd/ubi/cdev.c:1043
[<000000001253992f>] vfs_ioctl fs/ioctl.c:47 [inline]
[<000000001253992f>] file_ioctl fs/ioctl.c:545 [inline]
[<000000001253992f>] do_vfs_ioctl+0x551/0x890 fs/ioctl.c:732
[<00000000c49e8c94>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:749
[<00000000261db07c>] __do_sys_ioctl fs/ioctl.c:756 [inline]
[<00000000261db07c>] __se_sys_ioctl fs/ioctl.c:754 [inline]
[<00000000261db07c>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:754
[<000000004f01dc3e>] do_syscall_64+0x73/0x220
arch/x86/entry/common.c:294
[<000000002de81d29>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
BUG: memory leak
unreferenced object 0xffff888127cecb00 (size 32):
comm "syz-executor527", pid 7144, jiffies 4294957528 (age 32.820s)
hex dump (first 32 bytes):
00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de ........".......
00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00 ................
backtrace:
[<0000000029f9ef6c>] kmemleak_alloc_recursive
include/linux/kmemleak.h:43 [inline]
[<0000000029f9ef6c>] slab_post_alloc_hook mm/slab.h:586 [inline]
[<0000000029f9ef6c>] slab_alloc mm/slab.c:3320 [inline]
[<0000000029f9ef6c>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
[<000000003092c936>] erase_aeb+0x2a/0x100 drivers/mtd/ubi/wl.c:1691
[<00000000d507b66e>] ubi_wl_init+0x1ae/0x600 drivers/mtd/ubi/wl.c:1758
[<0000000072e7d762>] ubi_attach+0x665/0x18e7
drivers/mtd/ubi/attach.c:1605
[<0000000024d645cb>] ubi_attach_mtd_dev+0x5b3/0xd40
drivers/mtd/ubi/build.c:946
[<00000000e6600cef>] ctrl_cdev_ioctl+0x149/0x1c0
drivers/mtd/ubi/cdev.c:1043
[<000000001253992f>] vfs_ioctl fs/ioctl.c:47 [inline]
[<000000001253992f>] file_ioctl fs/ioctl.c:545 [inline]
[<000000001253992f>] do_vfs_ioctl+0x551/0x890 fs/ioctl.c:732
[<00000000c49e8c94>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:749
[<00000000261db07c>] __do_sys_ioctl fs/ioctl.c:756 [inline]
[<00000000261db07c>] __se_sys_ioctl fs/ioctl.c:754 [inline]
[<00000000261db07c>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:754
[<000000004f01dc3e>] do_syscall_64+0x73/0x220
arch/x86/entry/common.c:294
[<000000002de81d29>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
executing program
executing program
executing program
executing program
executing program
^ permalink raw reply [flat|nested] 2+ messages in thread
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2019-12-08 19:35 memory leak in erase_aeb syzbot
2020-01-11 17:19 ` syzbot
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