Hello,
syzbot found the following issue on:
HEAD commit: f3e8416619ce Merge tag 'soc-fixes-6.1-5' of git://git.kern..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=11b594c7880000
kernel config: https://syzkaller.appspot.com/x/.config?x=b83f3e90d74765ea
dashboard link: https://syzkaller.appspot.com/bug?extid=eba014ac93ef29f83dc8
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=117d216b880000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/70829c2e18e5/disk-f3e84166.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5f84024c6f5e/vmlinux-f3e84166.xz
kernel image: https://storage.googleapis.com/syzbot-assets/50805dc3b682/bzImage-f3e84166.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/a7108de1d0f9/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]
DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x0, magic = 0xffff88806aa92b10, owner = 0x0, curr 0xffff88807a496040, list empty
WARNING: CPU: 1 PID: 7332 at kernel/locking/rwsem.c:1336 __up_read+0x5c0/0x720 kernel/locking/rwsem.c:1336
Modules linked in:
CPU: 1 PID: 7332 Comm: syz-executor.2 Not tainted 6.1.0-rc8-syzkaller-00035-gf3e8416619ce #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__up_read+0x5c0/0x720 kernel/locking/rwsem.c:1336
Code: 03 80 3c 02 00 0f 85 35 01 00 00 49 8b 17 4d 89 f1 4c 89 e9 48 c7 c6 80 2b 4c 8a ff 34 24 48 c7 c7 c0 28 4c 8a e8 6d ba 45 08 <0f> 0b 5e e9 38 fb ff ff 48 89 df e8 20 54 6a 00 e9 b2 fa ff ff 48
RSP: 0018:ffffc900067af940 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffffff8e512de8 RCX: 0000000000000000
RDX: ffff88807a496040 RSI: ffffffff81649a0c RDI: fffff52000cf5f1a
RBP: ffff88806aa92b18 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: 1ffff92000cf5f2c
R13: ffff88806aa92b10 R14: ffff88807a496040 R15: ffff88806aa92b10
FS: 00007f38e75a7700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f46be509000 CR3: 0000000017b11000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
inode_unlock_shared include/linux/fs.h:771 [inline]
lookup_slow fs/namei.c:1703 [inline]
walk_component+0x34a/0x5a0 fs/namei.c:1993
link_path_walk.part.0+0x74e/0xe20 fs/namei.c:2320
link_path_walk fs/namei.c:2245 [inline]
path_parentat+0xa8/0x1b0 fs/namei.c:2521
filename_parentat+0x1c3/0x5a0 fs/namei.c:2544
do_renameat2+0x1c3/0xc90 fs/namei.c:4848
__do_sys_renameat2 fs/namei.c:4963 [inline]
__se_sys_renameat2 fs/namei.c:4960 [inline]
__x64_sys_renameat2+0xe8/0x120 fs/namei.c:4960
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f38e688c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f38e75a7168 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f38e69ac050 RCX: 00007f38e688c0d9
RDX: 0000000000000004 RSI: 00000000200004c0 RDI: 0000000000000004
RBP: 00007f38e68e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000500 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1016202f R14: 00007f38e75a7300 R15: 0000000000022000
</TASK>
---
This report is generated by a bot. It may contain errors.
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syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches
syzbot has found a reproducer for the following issue on:
HEAD commit: 1f5abbd77e2c Merge tag 'thermal-6.2-rc3' of git://git.kern..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=113cc806480000
kernel config: https://syzkaller.appspot.com/x/.config?x=46221e8203c7aca6
dashboard link: https://syzkaller.appspot.com/bug?extid=eba014ac93ef29f83dc8
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=17f5d83a480000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1727f4b4480000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6c5b2e8c2c94/disk-1f5abbd7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8956b2eee8db/vmlinux-1f5abbd7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c3464b3b12f5/bzImage-1f5abbd7.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/6acfd5ce1186/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x0, magic = 0xffff8880708871d0, owner = 0x0, curr 0xffff8880279e1d40, list empty
WARNING: CPU: 1 PID: 5194 at kernel/locking/rwsem.c:1336 __up_read+0x5c0/0x720 kernel/locking/rwsem.c:1336
Modules linked in:
CPU: 1 PID: 5194 Comm: syz-executor234 Not tainted 6.2.0-rc2-syzkaller-00203-g1f5abbd77e2c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__up_read+0x5c0/0x720 kernel/locking/rwsem.c:1336
Code: 03 80 3c 02 00 0f 85 35 01 00 00 49 8b 17 4d 89 f1 4c 89 e9 48 c7 c6 80 44 4c 8a ff 34 24 48 c7 c7 c0 41 4c 8a e8 70 b8 5c 08 <0f> 0b 5e e9 38 fb ff ff 48 89 df e8 e0 8a 6c 00 e9 b2 fa ff ff 48
RSP: 0018:ffffc90003f4fb58 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffffff8e730c28 RCX: 0000000000000000
RDX: ffff8880279e1d40 RSI: ffffffff8166721c RDI: fffff520007e9f5d
RBP: ffff8880708871d8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: 1ffff920007e9f6f
R13: ffff8880708871d0 R14: ffff8880279e1d40 R15: ffff8880708871d0
FS: 00007f022ae3c700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f02330f3120 CR3: 000000001d72a000 CR4: 0000000000350ee0
Call Trace:
<TASK>
inode_unlock_shared include/linux/fs.h:771 [inline]
lookup_slow fs/namei.c:1703 [inline]
walk_component+0x34a/0x5a0 fs/namei.c:1993
lookup_last fs/namei.c:2450 [inline]
path_lookupat+0x1ba/0x840 fs/namei.c:2474
filename_lookup+0x1d2/0x590 fs/namei.c:2503
user_path_at_empty+0x46/0x60 fs/namei.c:2876
user_path_at include/linux/namei.h:57 [inline]
__do_sys_chdir fs/open.c:514 [inline]
__se_sys_chdir fs/open.c:508 [inline]
__x64_sys_chdir+0xbb/0x240 fs/open.c:508
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f02330b1a19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f022ae3c2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 0000000000000029 RCX: 00007f02330b1a19
RDX: 00007f02330b1a19 RSI: ffffffffffffffb8 RDI: 0000000020000380
RBP: 00007f0233155798 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0233155790
R13: 00007f023315579c R14: 6573726168636f69 R15: 0030656c69662f2e
</TASK>
syzbot has bisected this issue to:
commit 6e5be40d32fb1907285277c02e74493ed43d77fe
Author: Konstantin Komarov <[email protected]>
Date: Fri Aug 13 14:21:30 2021 +0000
fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=156b1c56480000
start commit: 1f5abbd77e2c Merge tag 'thermal-6.2-rc3' of git://git.kern..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=176b1c56480000
console output: https://syzkaller.appspot.com/x/log.txt?x=136b1c56480000
kernel config: https://syzkaller.appspot.com/x/.config?x=46221e8203c7aca6
dashboard link: https://syzkaller.appspot.com/bug?extid=eba014ac93ef29f83dc8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17f5d83a480000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1727f4b4480000
Reported-by: [email protected]
Fixes: 6e5be40d32fb ("fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot suspects this issue was fixed by commit:
commit d772781964415c63759572b917e21c4f7ec08d9f
Author: Jakub Kicinski <[email protected]>
Date: Fri Jan 6 06:33:54 2023 +0000
devlink: bump the instance index directly when iterating
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12801432a80000
start commit: f3e8416619ce Merge tag 'soc-fixes-6.1-5' of git://git.kern..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=b83f3e90d74765ea
dashboard link: https://syzkaller.appspot.com/bug?extid=eba014ac93ef29f83dc8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=117d216b880000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: devlink: bump the instance index directly when iterating
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
On Thu, Jul 13, 2023 at 4:31 AM syzbot
<[email protected]> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit d772781964415c63759572b917e21c4f7ec08d9f
> Author: Jakub Kicinski <[email protected]>
> Date: Fri Jan 6 06:33:54 2023 +0000
>
> devlink: bump the instance index directly when iterating
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12801432a80000
> start commit: f3e8416619ce Merge tag 'soc-fixes-6.1-5' of git://git.kern..
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=b83f3e90d74765ea
> dashboard link: https://syzkaller.appspot.com/bug?extid=eba014ac93ef29f83dc8
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=117d216b880000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: devlink: bump the instance index directly when iterating
That commit fixes a second problem triggerable by the same reproducer
-- "INFO: rcu detected stall", but it is not related to the original
"WARNING in walk_component" crash.
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
> --