Messages in this thread | | | Date | Wed, 2 Aug 2023 17:12:05 +0800 | Subject | Re: [syzbot] [btrfs?] kernel BUG in prepare_to_merge | From | Qu Wenruo <> |
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On 2023/7/2 04:46, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 533925cb7604 Merge tag 'riscv-for-linus-6.5-mw1' of git://.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=14d8b610a80000 > kernel config: https://syzkaller.appspot.com/x/.config?x=12464973c17d2b37 > 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 > > Unfortunately, I don't have any reproducer for this issue yet. > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/7b23da6a6f6c/disk-533925cb.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/f163e9ea9946/vmlinux-533925cb.xz > kernel image: https://storage.googleapis.com/syzbot-assets/5b943aa5a1e1/bzImage-533925cb.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+ae97a827ae1c3336bbb4@syzkaller.appspotmail.com >
#syz test: https://github.com/adam900710/linux graceful_reloc_mismatch
> 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: 9904 Comm: syz-executor.3 Not tainted 6.4.0-syzkaller-08881-g533925cb7604 #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 6d 62 ec fd 48 c7 c7 20 5e 4b 8b 48 c7 c6 c0 6d 4b 8b 48 c7 c2 a0 5e 4b 8b b9 7f 07 00 00 e8 8e d8 15 07 <0f> 0b e8 d7 17 18 07 f3 0f 1e fa e8 3e 62 ec fd 43 80 3c 2f 00 74 > RSP: 0018:ffffc9000325f760 EFLAGS: 00010246 > RAX: 000000000000004f RBX: ffff888075644030 RCX: 1481ccc522da5800 > RDX: ffffc90005c09000 RSI: 00000000000364ca RDI: 00000000000364cb > RBP: ffffc9000325f870 R08: ffffffff816f33ac R09: 1ffff9200064bea0 > R10: dffffc0000000000 R11: fffff5200064bea1 R12: ffff888075644000 > R13: ffff88803b166000 R14: ffff88803b166560 R15: ffff88803b166558 > FS: 00007f4e305fd700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 000056080679c000 CR3: 00000000193ad000 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: 0033:0x7f4e2f88c389 > 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:00007f4e305fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: 00007f4e2f9abf80 RCX: 00007f4e2f88c389 > RDX: 00000000200003c0 RSI: 00000000c4009420 RDI: 0000000000000005 > RBP: 00007f4e2f8d7493 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 00007ffdbefc213f R14: 00007f4e305fd300 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 6d 62 ec fd 48 c7 c7 20 5e 4b 8b 48 c7 c6 c0 6d 4b 8b 48 c7 c2 a0 5e 4b 8b b9 7f 07 00 00 e8 8e d8 15 07 <0f> 0b e8 d7 17 18 07 f3 0f 1e fa e8 3e 62 ec fd 43 80 3c 2f 00 74 > RSP: 0018:ffffc9000325f760 EFLAGS: 00010246 > RAX: 000000000000004f RBX: ffff888075644030 RCX: 1481ccc522da5800 > RDX: ffffc90005c09000 RSI: 00000000000364ca RDI: 00000000000364cb > RBP: ffffc9000325f870 R08: ffffffff816f33ac R09: 1ffff9200064bea0 > R10: dffffc0000000000 R11: fffff5200064bea1 R12: ffff888075644000 > R13: ffff88803b166000 R14: ffff88803b166560 R15: ffff88803b166558 > FS: 00007f4e305fd700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 000055555657e888 CR3: 00000000193ad000 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@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the bug is already fixed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want to change bug's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the bug is a duplicate of another bug, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup
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