syzbot has found a reproducer for the following issue on: HEAD commit: 995b406c7e97 Merge tag 'csky-for-linus-6.5' of https://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1172e02ca80000 kernel config: https://syzkaller.appspot.com/x/.config?x=71a52faf60231bc7 dashboard link: https://syzkaller.appspot.com/bug?extid=ae97a827ae1c3336bbb4 compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11e6ddf0a80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/01122b567c73/disk-995b406c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/75b7a37e981e/vmlinux-995b406c.xz kernel image: https://storage.googleapis.com/syzbot-assets/758b5afcf092/bzImage-995b406c.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/96451b8f418b/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ae97a827ae1c3336bbb4@xxxxxxxxxxxxxxxxxxxxxxxxx assertion failed: root->reloc_root == reloc_root, in fs/btrfs/relocation.c:1919 ------------[ cut here ]------------ kernel BUG at fs/btrfs/relocation.c:1919! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 7760 Comm: syz-executor.5 Not tainted 6.4.0-syzkaller-10098-g995b406c7e97 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:prepare_to_merge+0xbb2/0xc40 fs/btrfs/relocation.c:1919 Code: fe e9 f5 f7 ff ff e8 9d ab eb fd 48 c7 c7 a0 67 4b 8b 48 c7 c6 40 77 4b 8b 48 c7 c2 20 68 4b 8b b9 7f 07 00 00 e8 0e 7a 17 07 <0f> 0b e8 57 b9 19 07 f3 0f 1e fa e8 6e ab eb fd 43 80 3c 2f 00 74 RSP: 0018:ffffc9000bf47760 EFLAGS: 00010246 RAX: 000000000000004f RBX: ffff88807b35e030 RCX: ab28d7f10bef9500 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc9000bf47870 R08: ffffffff816f481c R09: 1ffff920017e8ea0 R10: dffffc0000000000 R11: fffff520017e8ea1 R12: ffff88807b35e000 R13: ffff888021ffc000 R14: ffff888021ffc560 R15: ffff888021ffc558 FS: 00007fef4adf9700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f846a5fe000 CR3: 000000001ec2d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> relocate_block_group+0xa5d/0xcd0 fs/btrfs/relocation.c:3749 btrfs_relocate_block_group+0x7ab/0xd70 fs/btrfs/relocation.c:4087 btrfs_relocate_chunk+0x12c/0x3b0 fs/btrfs/volumes.c:3283 __btrfs_balance+0x1b06/0x2690 fs/btrfs/volumes.c:4018 btrfs_balance+0xbdb/0x1120 fs/btrfs/volumes.c:4402 btrfs_ioctl_balance+0x496/0x7c0 fs/btrfs/ioctl.c:3604 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf8/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fef4a08c389 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:00007fef4adf9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fef4a1abf80 RCX: 00007fef4a08c389 RDX: 00000000200003c0 RSI: 00000000c4009420 RDI: 0000000000000005 RBP: 00007fef4a0d7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec9c8752f R14: 00007fef4adf9300 R15: 0000000000022000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:prepare_to_merge+0xbb2/0xc40 fs/btrfs/relocation.c:1919 Code: fe e9 f5 f7 ff ff e8 9d ab eb fd 48 c7 c7 a0 67 4b 8b 48 c7 c6 40 77 4b 8b 48 c7 c2 20 68 4b 8b b9 7f 07 00 00 e8 0e 7a 17 07 <0f> 0b e8 57 b9 19 07 f3 0f 1e fa e8 6e ab eb fd 43 80 3c 2f 00 74 RSP: 0018:ffffc9000bf47760 EFLAGS: 00010246 RAX: 000000000000004f RBX: ffff88807b35e030 RCX: ab28d7f10bef9500 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc9000bf47870 R08: ffffffff816f481c R09: 1ffff920017e8ea0 R10: dffffc0000000000 R11: fffff520017e8ea1 R12: ffff88807b35e000 R13: ffff888021ffc000 R14: ffff888021ffc560 R15: ffff888021ffc558 FS: 00007fef4adf9700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f22c0e44000 CR3: 000000001ec2d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.
