Re: [syzbot] [hfs?] possible deadlock in hfsplus_file_extend

Re: [syzbot] [hfs?] possible deadlock in hfsplus_file_extend

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+325b61d3c9a17729454b@syzkaller.appspotmail.com

Tested on:

commit:         e88c4cfc Merge tag 'for-6.9-rc5-tag' of git://git.kern..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ master
console output: https://syzkaller.appspot.com/x/log.txt?x=1533285f180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=98d5a8e00ed1044a
dashboard link: https://syzkaller.appspot.com/bug?extid=325b61d3c9a17729454b
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=131f0927180000

Note: testing is done by a robot and is best-effort only.

Re: [syzbot] [hfs?] possible deadlock in hfsplus_file_extend

[syzbot]

syzbot suspects this issue was fixed by commit:

commit be4edd1642ee205ed7bbf66edc0453b1be1fb8d7
Author: Chao Yu <chao@kernel.org>
Date:   Fri Jun 7 14:23:04 2024 +0000

    hfsplus: fix to avoid false alarm of circular locking

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16c5f59f980000
start commit:   90d35da658da Linux 6.8-rc7
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=70429b75d4a1a401
dashboard link: https://syzkaller.appspot.com/bug?extid=325b61d3c9a17729454b
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=159253ee180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11afd4fe180000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: hfsplus: fix to avoid false alarm of circular locking

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: [syzbot] [hfs?] possible deadlock in hfsplus_file_extend

[Chao Yu]

#syz fix: hfsplus: fix to avoid false alarm of circular locking

On 2024/9/28 11:15, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
> 
> commit be4edd1642ee205ed7bbf66edc0453b1be1fb8d7
> Author: Chao Yu <chao@kernel.org>
> Date:   Fri Jun 7 14:23:04 2024 +0000
> 
>      hfsplus: fix to avoid false alarm of circular locking
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16c5f59f980000
> start commit:   90d35da658da Linux 6.8-rc7
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=70429b75d4a1a401
> dashboard link: https://syzkaller.appspot.com/bug?extid=325b61d3c9a17729454b
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=159253ee180000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11afd4fe180000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
> 
> #syz fix: hfsplus: fix to avoid false alarm of circular locking
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: [syzbot] [hfs?] possible deadlock in hfsplus_file_extend

[syzbot]

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
SYZFAIL: NL802154_CMD_SET_SHORT_ADDR failed

2024/10/09 23:22:11 ignoring optional flag "type"="gce"
2024/10/09 23:22:11 parsed 1 programs
2024/10/09 23:22:11 [FATAL] failed to run ["./syz-executor" "setup" "fault" "binfmt_misc" "usb" "802154" "swap"]: exit status 67
mkdir(/syzcgroup) failed: 17
mount(binfmt_misc) failed: 16
SYZFAIL: NL802154_CMD_SET_SHORT_ADDR failed
 (errno 16: Device or resource busy)


Tested on:

commit:         ffcd06b6 hfs: convert hfs to use the new mount api
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
console output: https://syzkaller.appspot.com/x/log.txt?x=17b18f07980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8420a89323bff217
dashboard link: https://syzkaller.appspot.com/bug?extid=325b61d3c9a17729454b
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.