Re: vfs/for-next: [ 5.294950] kernel BUG at fs/inode.c:1561!

Re: vfs/for-next: [ 5.294950] kernel BUG at fs/inode.c:1561!

[Andrei Vagin]

On Sat, Jul 28, 2018 at 6:13 PM Andrei Vagin <avagin@gmail.com> wrote:
>
> Hi,
>
> The kernel from vfs/for-next (fc6517917ba6f1) doesn't boot:

The issue is in "[e24263935c81] vfs: don't evict uninitialized inode"
and it was fixed in the third version of this patch:

https://lkml.org/lkml/2018/7/24/474

>
> [    5.291586] ------------[ cut here ]------------
> [    5.294950] kernel BUG at fs/inode.c:1561!
> [    5.295934] invalid opcode: 0000 [#1] SMP PTI
> [    5.297082] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
> 4.18.0-rc1-00108-g203edd18151b #1
> [    5.298343] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
> BIOS ?-20180531_142017-buildhw-08.phx2.fedoraproject.org-1.fc28
> 04/01/2014
> [    5.300427] RIP: 0010:iput+0x2bf/0x2e0
> [    5.301034] Code: e0 01 00 00 85 c0 75 12 48 8b 43 28 f6 40 53 40
> 74 08 48 89 df e8 01 ea ff ff 5b 4c 89 ef 5d 41 5c 41 5d 41 5e e9 81
> a9 75 00 <0f> 0b c3 48 8b 83 d0 00 00 00 eb c1 0f 0b e9 6f fe ff ff 0f
> 0b eb
> [    5.304718] RSP: 0000:ffffb7184062fc80 EFLAGS: 00010202
> [    5.305807] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
> [    5.307029] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff931efac28798
> [    5.308395] RBP: ffff931efac28798 R08: 0000000000000000 R09: 0000000000000000
> [    5.309812] R10: 0000000000000000 R11: ffffffffab237ac0 R12: ffff931efac28618
> [    5.311162] R13: ffff931ef8db38e8 R14: ffff931efac28600 R15: ffff931efac28bc0
> [    5.312376] FS:  0000000000000000(0000) GS:ffff931effc00000(0000)
> knlGS:0000000000000000
> [    5.313802] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [    5.314709] CR2: 0000000000000000 CR3: 000000002c41e001 CR4: 00000000003606f0
> [    5.315775] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [    5.316832] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [    5.317836] Call Trace:
> [    5.318229]  __blkdev_put+0x172/0x1f0
> [    5.318833]  ? ext4_calculate_overhead+0x490/0x490
> [    5.319610]  deactivate_locked_super+0x34/0x70
> [    5.320314]  mount_bdev+0x1a9/0x1c0
> [    5.320861]  legacy_get_tree+0x3b/0xe0
> [    5.321477]  vfs_get_tree+0x6e/0x170
> [    5.322027]  do_mount+0x2f9/0xab0
> [    5.322577]  ? memdup_user+0x3e/0x70
> [    5.323150]  ksys_mount+0xba/0xd0
> [    5.323819]  mount_block_root+0x104/0x2e7
> [    5.324477]  ? do_early_param+0x8e/0x8e
> [    5.325155]  prepare_namespace+0x135/0x16b
> [    5.325799]  kernel_init_freeable+0x285/0x2a9
> [    5.326476]  ? rest_init+0xb9/0xb9
> [    5.326998]  kernel_init+0xa/0x104
> [    5.327532]  ret_from_fork+0x3a/0x50
> [    5.328065] Modules linked in:
> [    5.328645] ---[ end trace bbf49eb2660620f1 ]---
> [    5.329367] RIP: 0010:iput+0x2bf/0x2e0
> [    5.329919] Code: e0 01 00 00 85 c0 75 12 48 8b 43 28 f6 40 53 40
> 74 08 48 89 df e8 01 ea ff ff 5b 4c 89 ef 5d 41 5c 41 5d 41 5e e9 81
> a9 75 00 <0f> 0b c3 48 8b 83 d0 00 00 00 eb c1 0f 0b e9 6f fe ff ff 0f
> 0b eb
> [    5.332719] RSP: 0000:ffffb7184062fc80 EFLAGS: 00010202
> [    5.333493] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
> [    5.334508] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff931efac28798
> [    5.335532] RBP: ffff931efac28798 R08: 0000000000000000 R09: 0000000000000000
> [    5.336556] R10: 0000000000000000 R11: ffffffffab237ac0 R12: ffff931efac28618
> [    5.337648] R13: ffff931ef8db38e8 R14: ffff931efac28600 R15: ffff931efac28bc0
> [    5.338646] FS:  0000000000000000(0000) GS:ffff931effc00000(0000)
> knlGS:0000000000000000
> [    5.339818] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [    5.340658] CR2: 0000000000000000 CR3: 000000002c41e001 CR4: 00000000003606f0
> [    5.341947] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [    5.343272] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [    5.344380] Kernel panic - not syncing: Attempted to kill init!
> exitcode=0x0000000b
> [    5.344380]
> [    5.346065] Kernel Offset: 0x28000000 from 0xffffffff81000000
> (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
> [    5.347682] ---[ end Kernel panic - not syncing: Attempted to kill
> init! exitcode=0x0000000b
> [    5.347682]  ]---
>
> https://travis-ci.org/avagin/linux/jobs/409130061
>
> Thanks,
> Andrei