Hello, syzbot found the following issue on: HEAD commit: 8bc9e6515183 Merge tag 'devicetree-for-6.7' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10e087a0e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=c3aadb4391bbacce dashboard link: https://syzkaller.appspot.com/bug?extid=06006fc4a90bff8e8f17 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/6c9b9f6781b1/disk-8bc9e651.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/44acae63a945/vmlinux-8bc9e651.xz kernel image: https://storage.googleapis.com/syzbot-assets/f0058df8ab69/bzImage-8bc9e651.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+06006fc4a90bff8e8f17@xxxxxxxxxxxxxxxxxxxxxxxxx assertion failed: block_start != EXTENT_MAP_HOLE, in fs/btrfs/extent_io.c:1351 ------------[ cut here ]------------ kernel BUG at fs/btrfs/extent_io.c:1351! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6580 Comm: syz-executor.3 Not tainted 6.6.0-syzkaller-06824-g8bc9e6515183 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:__extent_writepage_io+0xcce/0xcf0 fs/btrfs/extent_io.c:1351 Code: 18 83 70 07 0f 0b e8 a1 0c f2 fd 48 c7 c7 c0 b6 8b 8b 48 c7 c6 c0 c3 8b 8b 48 c7 c2 60 b6 8b 8b b9 47 05 00 00 e8 f2 82 70 07 <0f> 0b e8 7b 0c f2 fd 48 8b 3c 24 e8 82 2a 01 00 48 89 c7 48 c7 c6 RSP: 0018:ffffc90003eef3a0 EFLAGS: 00010246 RAX: 000000000000004e RBX: 0000000000000000 RCX: f5edcbbfef5d6800 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: fffffffffffffffd R08: ffffffff81717a4c R09: 1ffff920007dde14 R10: dffffc0000000000 R11: fffff520007dde15 R12: 0000000000002000 R13: 0000000000002000 R14: ffffea0000db97e8 R15: ffff88801ce9b4e0 FS: 00007f2d500396c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9b8a757f28 CR3: 0000000062c62000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __extent_writepage fs/btrfs/extent_io.c:1441 [inline] extent_write_cache_pages fs/btrfs/extent_io.c:2103 [inline] extent_writepages+0x149b/0x2e50 fs/btrfs/extent_io.c:2225 do_writepages+0x3a6/0x670 mm/page-writeback.c:2553 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:390 __filemap_fdatawrite_range mm/filemap.c:423 [inline] __filemap_fdatawrite mm/filemap.c:429 [inline] filemap_flush+0x11e/0x170 mm/filemap.c:456 btrfs_release_file+0x117/0x130 fs/btrfs/file.c:1726 __fput+0x3cc/0xa10 fs/file_table.c:394 task_work_run+0x24a/0x300 kernel/task_work.c:180 get_signal+0x166e/0x1840 kernel/signal.c:2691 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x50/0x110 arch/x86/entry/common.c:88 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f2d4f27cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2d500390c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: fffffffffffffffc RBX: 00007f2d4f39c120 RCX: 00007f2d4f27cae9 RDX: 0000000000000000 RSI: 000000000014927e RDI: 0000000020000180 RBP: 00007f2d4f2c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f2d4f39c120 R15: 00007ffcbb50d888 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__extent_writepage_io+0xcce/0xcf0 fs/btrfs/extent_io.c:1351 Code: 18 83 70 07 0f 0b e8 a1 0c f2 fd 48 c7 c7 c0 b6 8b 8b 48 c7 c6 c0 c3 8b 8b 48 c7 c2 60 b6 8b 8b b9 47 05 00 00 e8 f2 82 70 07 <0f> 0b e8 7b 0c f2 fd 48 8b 3c 24 e8 82 2a 01 00 48 89 c7 48 c7 c6 RSP: 0018:ffffc90003eef3a0 EFLAGS: 00010246 RAX: 000000000000004e RBX: 0000000000000000 RCX: f5edcbbfef5d6800 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: fffffffffffffffd R08: ffffffff81717a4c R09: 1ffff920007dde14 R10: dffffc0000000000 R11: fffff520007dde15 R12: 0000000000002000 R13: 0000000000002000 R14: ffffea0000db97e8 R15: ffff88801ce9b4e0 FS: 00007f2d500396c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30c22000 CR3: 0000000062c62000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
