[LU-13119] lustre-initialization crashed in common_file_perm() on SLES12

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: Lustre 2.14.0
• Severity: 3
• Assignee: James A Simmons
• Reporter: Maloo

Description

This issue was created by maloo for Andreas Dilger <[e-mail]>

This issue relates to the following test suite run: https://testing.whamcloud.com/test_sets/f8038c56-3208-11ea-adca-52540065bddc

lustre-initialization failed with the following error:

'trevis-42vm12 crashed during lustre-initialization-1'

The stack trace on the MDS looks like:

LDISKFS-fs (dm-4): mounted filesystem with ordered data mode.
Opts: user_xattr,errors=remount-ro,no_mbcache,nodelalloc
BUG: unable to handle kernel NULL pointer dereference at 0000000000000078
IP: [<ffffffff812d5995>] common_file_perm+0x15/0x180
Oops: 0000 [#1] SMP 
Supported: No, Unsupported modules are loaded
CPU: 0 PID: 2995 Comm: mount.lustre Tainted: 4.4.180-94.100_lustre
Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
Call Trace:
security_file_permission+0x3e/0xc0
iterate_dir+0x32/0x110
osd_ios_general_scan+0x12e/0x250 [osd_ldiskfs]
osd_initial_OI_scrub+0x5e/0xc00 [osd_ldiskfs]
osd_scrub_setup+0x8f5/0x960 [osd_ldiskfs]
osd_device_alloc+0x5ac/0x8c0 [osd_ldiskfs]
obd_setup+0xb8/0x230 [obdclass]
class_setup+0x468/0x7c0 [obdclass]
class_process_config+0x1890/0x27b0 [obdclass]
do_lcfg+0x235/0x490 [obdclass]
lustre_start_simple+0x85/0x1f0 [obdclass]
server_fill_super+0xe81/0x1640 [obdclass]
lustre_fill_super+0x436/0x8d0 [obdclass]
mount_nodev+0x48/0xa0
mount_fs+0x3a/0x170
vfs_kern_mount+0x62/0x110
do_mount+0x213/0xcd0
SyS_mount+0x85/0xd0

It could be that this is related to iterate_dir() taking a fake filp as an argument, and somehow filp is not filled in sufficiently for security_file_permission()->common_file_perm().

VVVVVVV DO NOT REMOVE LINES BELOW, Added by Maloo for auto-association VVVVVVV
lustre-initialization lustre-initialization - 'trevis-42vm12 crashed during lustre-initialization-1'

Issue Links

• is related to: LU-11832 ARM servers crashing on MDS startup