Message-ID: <000000000000aa486f062080cb5d@google.com>
Date: Sun, 25 Aug 2024 05:03:25 -0700
From: syzbot <syzbot+f88e7f8eca12247510dc@...kaller.appspotmail.com>
To: clm@...com, dsterba@...e.com, josef@...icpanda.com, 
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [btrfs?] kernel BUG in can_finish_ordered_extent

Hello,

syzbot found the following issue on:

HEAD commit:    c79c85875f1a Add linux-next specific files for 20240823
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=177d1305980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=23bc95d9a9b56fa4
dashboard link: https://syzkaller.appspot.com/bug?extid=f88e7f8eca12247510dc
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8bbbc2af33d9/disk-c79c8587.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/e25f34cd29db/vmlinux-c79c8587.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1c0f92a7043e/bzImage-c79c8587.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f88e7f8eca12247510dc@...kaller.appspotmail.com

assertion failed: folio->mapping, in fs/btrfs/ordered-data.c:344
------------[ cut here ]------------
kernel BUG at fs/btrfs/ordered-data.c:344!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 6196 Comm: syz.0.165 Not tainted 6.11.0-rc4-next-20240823-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:can_finish_ordered_extent+0x754/0x9e0 fs/btrfs/ordered-data.c:344
Code: e9 67 fe ff ff e8 ec 0c db fd 48 c7 c7 40 b1 4c 8c 48 c7 c6 a0 b7 4c 8c 48 c7 c2 00 b1 4c 8c b9 58 01 00 00 e8 2d 4b 03 08 90 <0f> 0b e8 c5 0c db fd 48 c7 c7 40 b1 4c 8c 48 c7 c6 c0 b7 4c 8c 48
RSP: 0018:ffffc900044de910 EFLAGS: 00010046
RAX: 0000000000000040 RBX: dffffc0000000000 RCX: 41dea3a3101c9000
RDX: ffffc90015fb6000 RSI: 0000000000012a7e RDI: 0000000000012a7f
RBP: ffffea00016e4118 R08: ffffffff817452ac R09: 1ffff1101720519a
R10: dffffc0000000000 R11: ffffed101720519b R12: ffff88805e540000
R13: 0000000000000000 R14: ffff88805e540000 R15: ffffea00016e4100
FS:  00007f3e249ff6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055edd8a65b40 CR3: 000000002044e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_finish_ordered_extent+0x140/0x480 fs/btrfs/ordered-data.c:410
 end_bbio_data_write+0x4bd/0x750 fs/btrfs/extent_io.c:476
 __btrfs_bio_end_io fs/btrfs/bio.c:116 [inline]
 btrfs_orig_bbio_end_io+0x3ba/0x470 fs/btrfs/bio.c:162
 btrfs_submit_chunk fs/btrfs/bio.c:756 [inline]
 btrfs_submit_bio+0x11fc/0x1940 fs/btrfs/bio.c:775
 submit_one_bio+0x115/0x1c0 fs/btrfs/extent_io.c:120
 submit_extent_folio+0xad3/0xe90
 submit_one_sector fs/btrfs/extent_io.c:1315 [inline]
 __extent_writepage_io+0x84e/0xc90 fs/btrfs/extent_io.c:1391
 __extent_writepage fs/btrfs/extent_io.c:1457 [inline]
 extent_write_cache_pages fs/btrfs/extent_io.c:2125 [inline]
 btrfs_writepages+0x1132/0x22a0 fs/btrfs/extent_io.c:2251
 do_writepages+0x35d/0x870 mm/page-writeback.c:2683
 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:398
 __filemap_fdatawrite_range mm/filemap.c:431 [inline]
 filemap_fdatawrite_range+0x11a/0x180 mm/filemap.c:449
 btrfs_fdatawrite_range fs/btrfs/file.c:3778 [inline]
 start_ordered_ops fs/btrfs/file.c:1546 [inline]
 btrfs_sync_file+0x31d/0x10f0 fs/btrfs/file.c:1623
 generic_write_sync include/linux/fs.h:2850 [inline]
 btrfs_do_write_iter+0x5e2/0x760 fs/btrfs/file.c:1498
 do_iter_readv_writev+0x609/0x890
 vfs_writev+0x37c/0xbb0 fs/read_write.c:971
 do_pwritev fs/read_write.c:1072 [inline]
 __do_sys_pwritev2 fs/read_write.c:1131 [inline]
 __se_sys_pwritev2+0x1ca/0x2d0 fs/read_write.c:1122
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e24f79e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3e249ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f3e25115f80 RCX: 00007f3e24f79e79
RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000006
RBP: 00007f3e24fe793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000005412 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3e25115f80 R15: 00007ffda8678c38
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:can_finish_ordered_extent+0x754/0x9e0 fs/btrfs/ordered-data.c:344
Code: e9 67 fe ff ff e8 ec 0c db fd 48 c7 c7 40 b1 4c 8c 48 c7 c6 a0 b7 4c 8c 48 c7 c2 00 b1 4c 8c b9 58 01 00 00 e8 2d 4b 03 08 90 <0f> 0b e8 c5 0c db fd 48 c7 c7 40 b1 4c 8c 48 c7 c6 c0 b7 4c 8c 48
RSP: 0018:ffffc900044de910 EFLAGS: 00010046
RAX: 0000000000000040 RBX: dffffc0000000000 RCX: 41dea3a3101c9000
RDX: ffffc90015fb6000 RSI: 0000000000012a7e RDI: 0000000000012a7f
RBP: ffffea00016e4118 R08: ffffffff817452ac R09: 1ffff1101720519a
R10: dffffc0000000000 R11: ffffed101720519b R12: ffff88805e540000
R13: 0000000000000000 R14: ffff88805e540000 R15: ffffea00016e4100
FS:  00007f3e249ff6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055edd8a65b40 CR3: 000000002044e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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