Hello,
syzbot found the following issue on:
HEAD commit: a5088ee7251e Merge tag 'thermal-6.1-rc1' of git://git.kern..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=153f2492880000
kernel config: https://syzkaller.appspot.com/x/.config?x=21254cf9c7c084e0
dashboard link: https://syzkaller.appspot.com/bug?extid=2e2f697dbd0f429d5dae
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1556a368880000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c2d2c6d22fae/disk-a5088ee7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3c66d2393267/vmlinux-a5088ee7.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/f2050cc3fa6c/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]
BUG: memory leak
unreferenced object 0xffff888119526520 (size 32):
comm "syz-executor.4", pid 4168, jiffies 4294949450 (age 9.260s)
hex dump (first 32 bytes):
6c 6f 6f 70 34 00 00 00 00 00 00 00 00 00 00 00 loop4...........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff814c5b86>] kstrdup+0x36/0x70 mm/util.c:61
[<ffffffff814c5c13>] kstrdup_const+0x53/0x80 mm/util.c:84
[<ffffffff823af0e2>] kvasprintf_const+0xc2/0x110 lib/kasprintf.c:48
[<ffffffff824a442b>] kobject_set_name_vargs+0x3b/0xe0 lib/kobject.c:257
[<ffffffff824a48ad>] kobject_add_varg lib/kobject.c:352 [inline]
[<ffffffff824a48ad>] kobject_init_and_add+0x6d/0xc0 lib/kobject.c:441
[<ffffffff81e217ba>] nilfs_sysfs_create_device_group+0x9a/0x3d0 fs/nilfs2/sysfs.c:991
[<ffffffff81e0a03c>] init_nilfs+0x51c/0x680 fs/nilfs2/the_nilfs.c:637
[<ffffffff81df608b>] nilfs_fill_super fs/nilfs2/super.c:1047 [inline]
[<ffffffff81df608b>] nilfs_mount+0x51b/0x890 fs/nilfs2/super.c:1317
[<ffffffff8164f4ab>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
[<ffffffff815e8c48>] vfs_get_tree+0x28/0x100 fs/super.c:1530
[<ffffffff8162cbd7>] do_new_mount fs/namespace.c:3040 [inline]
[<ffffffff8162cbd7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
[<ffffffff8162d7be>] do_mount fs/namespace.c:3383 [inline]
[<ffffffff8162d7be>] __do_sys_mount fs/namespace.c:3591 [inline]
[<ffffffff8162d7be>] __se_sys_mount fs/namespace.c:3568 [inline]
[<ffffffff8162d7be>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
[<ffffffff845ebbf5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<ffffffff845ebbf5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
[<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
---
This report 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 [email protected].
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches
On Wed, Oct 5, 2022 at 5:44 PM syzbot wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: a5088ee7251e Merge tag 'thermal-6.1-rc1' of git://git.kern..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=153f2492880000
> kernel config: https://syzkaller.appspot.com/x/.config?x=21254cf9c7c084e0
> dashboard link: https://syzkaller.appspot.com/bug?extid=2e2f697dbd0f429d5dae
> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1556a368880000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/c2d2c6d22fae/disk-a5088ee7.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/3c66d2393267/vmlinux-a5088ee7.xz
> mounted in repro: https://storage.googleapis.com/syzbot-assets/f2050cc3fa6c/mount_0.gz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: [email protected]
>
> BUG: memory leak
> unreferenced object 0xffff888119526520 (size 32):
> comm "syz-executor.4", pid 4168, jiffies 4294949450 (age 9.260s)
> hex dump (first 32 bytes):
> 6c 6f 6f 70 34 00 00 00 00 00 00 00 00 00 00 00 loop4...........
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<ffffffff814c5b86>] kstrdup+0x36/0x70 mm/util.c:61
> [<ffffffff814c5c13>] kstrdup_const+0x53/0x80 mm/util.c:84
> [<ffffffff823af0e2>] kvasprintf_const+0xc2/0x110 lib/kasprintf.c:48
> [<ffffffff824a442b>] kobject_set_name_vargs+0x3b/0xe0 lib/kobject.c:257
> [<ffffffff824a48ad>] kobject_add_varg lib/kobject.c:352 [inline]
> [<ffffffff824a48ad>] kobject_init_and_add+0x6d/0xc0 lib/kobject.c:441
> [<ffffffff81e217ba>] nilfs_sysfs_create_device_group+0x9a/0x3d0 fs/nilfs2/sysfs.c:991
> [<ffffffff81e0a03c>] init_nilfs+0x51c/0x680 fs/nilfs2/the_nilfs.c:637
> [<ffffffff81df608b>] nilfs_fill_super fs/nilfs2/super.c:1047 [inline]
> [<ffffffff81df608b>] nilfs_mount+0x51b/0x890 fs/nilfs2/super.c:1317
> [<ffffffff8164f4ab>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
> [<ffffffff815e8c48>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff8162cbd7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff8162cbd7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162d7be>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162d7be>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162d7be>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162d7be>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff845ebbf5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff845ebbf5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
>
>
> ---
> This report 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 [email protected].
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> syzbot can test patches for this issue, for details see:
> https://goo.gl/tpsmEJ#testing-patches
#syz dup: memory leak in kobject_set_name_vargs (5)
Looks like the same issue as above. I'm now digging into it.
Ryusuke Konishi