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Date:   Wed, 15 Sep 2021 09:40:26 -0700
From:   syzbot <syzbot+80d413b5e0bdc4e192ba@...kaller.appspotmail.com>
To:     adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, tytso@....edu
Subject: [syzbot] WARNING in ext4_evict_inode (2)

Hello,

syzbot found the following issue on:

HEAD commit:    08dad2f4d541 net: stmmac: allow CSR clock of 300MHz
git tree:       net
console output: https://syzkaller.appspot.com/x/log.txt?x=159f1853300000
kernel config:  https://syzkaller.appspot.com/x/.config?x=16e23f04679ec35e
dashboard link: https://syzkaller.appspot.com/bug?extid=80d413b5e0bdc4e192ba
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+80d413b5e0bdc4e192ba@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 9028 at fs/ext4/inode.c:230 ext4_evict_inode+0xf9a/0x1950 fs/ext4/inode.c:230
Modules linked in:
CPU: 1 PID: 9028 Comm: syz-executor.5 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ext4_evict_inode+0xf9a/0x1950 fs/ext4/inode.c:230
Code: 28 41 bc 01 00 00 00 48 89 04 24 e9 60 f6 ff ff c7 44 24 24 06 00 00 00 c7 44 24 20 06 00 00 00 e9 df f6 ff ff e8 56 ad 62 ff <0f> 0b e9 c6 f5 ff ff e8 7a ee a9 ff e9 60 f1 ff ff 48 89 cf e8 6d
RSP: 0018:ffffc90000f2fca0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff920001e5f9a RCX: 0000000000000000
RDX: ffff88807ef11c80 RSI: ffffffff8213640a RDI: 0000000000000003
RBP: ffff888042a282a0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff821359ce R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000001 R14: ffff88814050ab60 R15: ffff8880414e4038
FS:  000000000230a400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32643000 CR3: 000000005087c000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 evict+0x2ed/0x6b0 fs/inode.c:586
 iput_final fs/inode.c:1662 [inline]
 iput.part.0+0x539/0x850 fs/inode.c:1688
 iput+0x58/0x70 fs/inode.c:1678
 do_unlinkat+0x418/0x650 fs/namei.c:4176
 __do_sys_unlink fs/namei.c:4217 [inline]
 __se_sys_unlink fs/namei.c:4215 [inline]
 __x64_sys_unlink+0xc6/0x110 fs/namei.c:4215
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x465f37
Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd277ea528 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000465f37
RDX: 00007ffd277ea560 RSI: 00007ffd277ea560 RDI: 00007ffd277ea5f0
RBP: 00007ffd277ea5f0 R08: 0000000000000001 R09: 00007ffd277ea3c0
R10: 000000000230b89b R11: 0000000000000206 R12: 00000000004bee90
R13: 00007ffd277eb6c0 R14: 000000000230b810 R15: 00007ffd277eb700


---
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 syzkaller@...glegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

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