Reminder: 3 open syzbot bugs in "fs/btrfs" subsystem

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Of the currently open syzbot reports against the upstream kernel, I've manually marked 3 of them as possibly being bugs in the "fs/btrfs" subsystem. I've listed these reports below, sorted by an algorithm that tries to list first the reports most likely to be still valid, important, and actionable.

Of these 3 bugs, 1 was seen in mainline in the last week.

If you believe a bug is no longer valid, please close the syzbot report by sending a '#syz fix', '#syz dup', or '#syz invalid' command in reply to the original thread, as explained at https://goo.gl/tpsmEJ#status

If you believe I misattributed a bug to the "fs/btrfs" subsystem, please let me know, and if possible forward the report to the correct people or mailing list.

Here are the bugs:

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Title:              kernel BUG at fs/btrfs/volumes.c:LINE!
Last occurred:      2 days ago
Reported:           412 days ago
Branches:           Mainline and others
Dashboard link:     https://syzkaller.appspot.com/bug?id=d50670eeb21302915bde3f25871dfb7ea43db1e4
Original thread:    https://lkml.kernel.org/lkml/[email protected]/T/#u

Unfortunately, this bug does not have a reproducer.

The original thread for this bug received 6 replies; the last was 42 days ago.

If you fix this bug, please add the following tag to the commit:

    Reported-by: [email protected]

If you send any email or patch for this bug, please consider replying to the original thread. For the git send-email command to use, or tips on how to reply if the thread isn't in your mailbox, see the "Reply instructions" at
https://lkml.kernel.org/r/[email protected]

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Title:              general protection fault in btrfs_scan_one_device
Last occurred:      170 days ago
Reported:           250 days ago
Branches:           Mainline and others
Dashboard link:     https://syzkaller.appspot.com/bug?id=b54f2496d4cd5132c35cfc274a72ca9aff353ee5
Original thread:    https://lkml.kernel.org/lkml/[email protected]/T/#u

Unfortunately, this bug does not have a reproducer.

No one replied to the original thread for this bug.

If you fix this bug, please add the following tag to the commit:

    Reported-by: [email protected]

If you send any email or patch for this bug, please consider replying to the original thread. For the git send-email command to use, or tips on how to reply if the thread isn't in your mailbox, see the "Reply instructions" at
https://lkml.kernel.org/r/[email protected]

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Title:              invalid opcode in close_fs_devices
Last occurred:      81 days ago
Reported:           236 days ago
Branches:           Mainline
Dashboard link:     https://syzkaller.appspot.com/bug?id=5b65d7b852d4fe7f77af72e2f2c7a36837250c67
Original thread:    https://lkml.kernel.org/lkml/[email protected]/T/#u

Unfortunately, this bug does not have a reproducer.

The original thread for this bug received 1 reply, 235 days ago.

If you fix this bug, please add the following tag to the commit:

If you send any email or patch for this bug, please consider replying to the original thread. For the git send-email command to use, or tips on how to reply if the thread isn't in your mailbox, see the "Reply instructions" at
https://lkml.kernel.org/r/[email protected]