linux-ext4 - [syzbot] [ext4?] [block?] kernel BUG in set

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Message-ID: <00000000000017878306104e6c59@google.com>
Date: Thu, 01 Feb 2024 01:14:27 -0800
From: syzbot <syzbot+4bfc572b93963675a662@...kaller.appspotmail.com>
To: adilger.kernel@...ger.ca, axboe@...nel.dk, linux-block@...r.kernel.org, 
	linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com, tytso@....edu
Subject: [syzbot] [ext4?] [block?] kernel BUG in set_blocksize

Hello,

syzbot found the following issue on:

HEAD commit:    1bbb19b6eb1b Merge tag 'erofs-for-6.8-rc3-fixes' of git://..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=146e3d40180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=13fb219792fd389b
dashboard link: https://syzkaller.appspot.com/bug?extid=4bfc572b93963675a662
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=175dc87be80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/798e03d5a1df/disk-1bbb19b6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/54077750a6bf/vmlinux-1bbb19b6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/840fdc1b94f1/bzImage-1bbb19b6.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/63a064a072f7/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+4bfc572b93963675a662@...kaller.appspotmail.com

 __fput+0x429/0x8a0 fs/file_table.c:376
 __do_sys_close fs/open.c:1554 [inline]
 __se_sys_close fs/open.c:1539 [inline]
 __x64_sys_close+0x7e/0x110 fs/open.c:1539
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
------------[ cut here ]------------
kernel BUG at mm/truncate.c:413!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 PID: 8131 Comm: syz-executor.1 Not tainted 6.8.0-rc2-syzkaller-00047-g1bbb19b6eb1b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:truncate_inode_pages_range+0xe33/0xf70 mm/truncate.c:413
Code: 38 c1 0f 8c d5 f8 ff ff 4c 89 f7 e8 27 7f 24 00 e9 c8 f8 ff ff e8 ed b1 c5 ff 4c 89 e7 48 c7 c6 a0 8a b3 8b e8 2e 73 0a 00 90 <0f> 0b e8 96 b8 8f 09 e8 d1 b1 c5 ff 48 8b 7c 24 18 48 c7 c6 e0 8b
RSP: 0018:ffffc9000afc76c0 EFLAGS: 00010246
RAX: f4eb776fbe124800 RBX: 0000000000000001 RCX: ffffc9000afc7503
RDX: 0000000000000001 RSI: ffffffff8baac6e0 RDI: ffffffff8bfd9420
RBP: ffffc9000afc7920 R08: ffffffff8f84262f R09: 1ffffffff1f084c5
R10: dffffc0000000000 R11: fffffbfff1f084c6 R12: ffffea0001a41e40
R13: 0000000000000002 R14: ffffc9000afc7808 R15: ffffc9000afc7770
FS:  00007f35ceaab6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f29e7309d58 CR3: 0000000025a64000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kill_bdev block/bdev.c:79 [inline]
 set_blocksize+0x315/0x390 block/bdev.c:155
 sb_set_blocksize block/bdev.c:164 [inline]
 sb_min_blocksize+0xb3/0x190 block/bdev.c:180
 ext4_load_super fs/ext4/super.c:5030 [inline]
 __ext4_fill_super fs/ext4/super.c:5227 [inline]
 ext4_fill_super+0x6ec/0x6da0 fs/ext4/super.c:5703
 get_tree_bdev+0x3f7/0x570 fs/super.c:1619
 vfs_get_tree+0x90/0x2a0 fs/super.c:1784
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f35cdc7f4aa
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f35ceaaaef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f35ceaaaf80 RCX: 00007f35cdc7f4aa
RDX: 0000000020000100 RSI: 00000000200002c0 RDI: 00007f35ceaaaf40
RBP: 0000000020000100 R08: 00007f35ceaaaf80 R09: 0000000003000480
R10: 0000000003000480 R11: 0000000000000246 R12: 00000000200002c0
R13: 00007f35ceaaaf40 R14: 0000000000000786 R15: 00000000200000c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:truncate_inode_pages_range+0xe33/0xf70 mm/truncate.c:413
Code: 38 c1 0f 8c d5 f8 ff ff 4c 89 f7 e8 27 7f 24 00 e9 c8 f8 ff ff e8 ed b1 c5 ff 4c 89 e7 48 c7 c6 a0 8a b3 8b e8 2e 73 0a 00 90 <0f> 0b e8 96 b8 8f 09 e8 d1 b1 c5 ff 48 8b 7c 24 18 48 c7 c6 e0 8b
RSP: 0018:ffffc9000afc76c0 EFLAGS: 00010246
RAX: f4eb776fbe124800 RBX: 0000000000000001 RCX: ffffc9000afc7503
RDX: 0000000000000001 RSI: ffffffff8baac6e0 RDI: ffffffff8bfd9420
RBP: ffffc9000afc7920 R08: ffffffff8f84262f R09: 1ffffffff1f084c5
R10: dffffc0000000000 R11: fffffbfff1f084c6 R12: ffffea0001a41e40
R13: 0000000000000002 R14: ffffc9000afc7808 R15: ffffc9000afc7770
FS:  00007f35ceaab6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f29dd4ff000 CR3: 0000000025a64000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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If the report is already addressed, let syzbot know by replying with:
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If you want to overwrite report's subsystems, reply with:
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(See the list of subsystem names on the web dashboard)

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#syz dup: exact-subject-of-another-report

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