Hi, I'm having an issue with Btrfs on an opensuse Tumbleweed system using kernel 4.0.4-1
Here's what happened: I use the snapper tool to create periodic snapshots of the root FS After having problems with an update, I rolled back my system by seting the default subvolume for / to snapshot 398 (the last good snapshot) After rebooting, everything was fine. Some days later, snapper decided to delete the old snapshot 398 (that was mounted as /) Then, the system stopped with this error: Mai 29 22:45:45 linux.site dbus[1113]: [system] Activating service name='org.opensuse.Snapper' (using servicehelper) Mai 29 22:45:45 linux.site dbus[1113]: [system] Successfully activated service 'org.opensuse.Snapper' Mai 29 22:45:46 linux.site kernel: BTRFS error (device dm-1): deleting default subvolume 398 is not allowed Mai 29 22:45:46 linux.site kernel: BUG: unable to handle kernel NULL pointer dereference at (null) Mai 29 22:45:46 linux.site kernel: IP: [<ffffffff81207810>] pin_remove+0x50/0xb0 Mai 29 22:45:46 linux.site kernel: PGD 6edfe067 PUD 9bee4067 PMD 0 Mai 29 22:45:46 linux.site kernel: Oops: 0002 [#1] PREEMPT SMP Mai 29 22:45:46 linux.site kernel: Modules linked in: fuse bnep bluetooth rfkill af_packet ppdev snd_hda_codec_hdmi sn Mai 29 22:45:46 linux.site kernel: CPU: 0 PID: 3827 Comm: snapperd Not tainted 4.0.4-1-desktop #1 Mai 29 22:45:46 linux.site kernel: Hardware name: Gigabyte Technology Co., Ltd. GA-MA74GM-S2H/GA-MA74GM-S2H, BIOS FDd Mai 29 22:45:46 linux.site kernel: task: ffff88007066a290 ti: ffff88006e81c000 task.ti: ffff88006e81c000 Mai 29 22:45:46 linux.site kernel: RIP: 0010:[<ffffffff81207810>] [<ffffffff81207810>] pin_remove+0x50/0xb0 Mai 29 22:45:46 linux.site kernel: RSP: 0018:ffff88006e81fe78 EFLAGS: 00010246 Mai 29 22:45:46 linux.site kernel: RAX: 0000000000000000 RBX: ffff8800c9a1bc20 RCX: 00000000000001d9 Mai 29 22:45:46 linux.site kernel: RDX: 0000000000000000 RSI: 000000000000000a RDI: ffffffff821dc6b0 Mai 29 22:45:46 linux.site kernel: RBP: ffff88006e81feb8 R08: ffffffff81ef5ec8 R09: 0000000000000246 Mai 29 22:45:46 linux.site kernel: R10: 0000000000000412 R11: 0000000000000000 R12: ffff88007066a290 Mai 29 22:45:46 linux.site kernel: R13: ffff88007066a290 R14: 00007f9e3c000a00 R15: 00007f9e3c003560 Mai 29 22:45:46 linux.site kernel: FS: 00007f9e44350700(0000) GS:ffff88012fc00000(0000) knlGS:0000000000000000 Mai 29 22:45:46 linux.site kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Mai 29 22:45:46 linux.site kernel: CR2: 0000000000000000 CR3: 000000006ef32000 CR4: 00000000000007f0 Mai 29 22:45:46 linux.site kernel: Stack: Mai 29 22:45:46 linux.site kernel: ffff8800c9a1bc20 ffffffff811f59aa ffff8800c9a1bc20 ffffffff8120797c Mai 29 22:45:46 linux.site kernel: ffff8800c93b70e0 ffffffff00000000 ffff88007066a290 ffffffff810a4400 Mai 29 22:45:46 linux.site kernel: ffff88006e81feb8 ffff88006e81feb8 ffff8800be75c640 ffffffff820eca00 Mai 29 22:45:46 linux.site kernel: Call Trace: Mai 29 22:45:46 linux.site kernel: [<ffffffff811f59aa>] drop_mountpoint+0x1a/0x30 Mai 29 22:45:46 linux.site kernel: [<ffffffff8120797c>] pin_kill+0x6c/0x100 Mai 29 22:45:46 linux.site kernel: [<ffffffff81207a29>] mnt_pin_kill+0x19/0x30 Mai 29 22:45:46 linux.site kernel: [<ffffffff811f4dc2>] cleanup_mnt+0x72/0x80 Mai 29 22:45:46 linux.site kernel: [<ffffffff8107f944>] task_work_run+0xc4/0xe0 Mai 29 22:45:46 linux.site kernel: [<ffffffff81002f79>] do_notify_resume+0x69/0x90 Mai 29 22:45:46 linux.site kernel: [<ffffffff8168306b>] int_signal+0x12/0x17 Mai 29 22:45:46 linux.site kernel: [<00007f9e46413497>] 0x7f9e46413497 Mai 29 22:45:46 linux.site kernel: Code: 48 89 50 08 48 b8 00 01 10 00 00 00 ad de 48 8b 53 28 48 89 43 30 48 b8 00 02 Mai 29 22:45:46 linux.site kernel: RIP [<ffffffff81207810>] pin_remove+0x50/0xb0 Mai 29 22:45:46 linux.site kernel: RSP <ffff88006e81fe78> Mai 29 22:45:46 linux.site kernel: CR2: 0000000000000000 Mai 29 22:45:46 linux.site kernel: ---[ end trace 60632488b661379d ]--- Mai 29 22:45:46 linux.site kernel: note: snapperd[3827] exited with preempt_count 1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
