[LU-2406] Interop 2.3<->2.4 Failure: unable to handle kernel NULL pointer dereference at (null)

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.4.0
• Affects Version/s: Lustre 2.4.0
• Environment: server: 2.3 RHEL6; client: lustre-master build#1065 RHEL6
• Severity: 3
• Assignee: Andreas Dilger
• Reporter: Maloo

Description

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

This issue relates to the following test suite run: https://maloo.whamcloud.com/test_sets/72277ac4-397d-11e2-9fda-52540035b04c.

The sub-test test_26a failed with the following error:

test_26a returned 1

From OST console log:

15:34:24:Lustre: DEBUG MARKER: == sanity test 26a: multiple component symlink ========================= 15:34:02 (1353972842)
15:34:24:Lustre: DEBUG MARKER: lctl set_param -n fail_loc=0 2>/dev/null || true
15:34:24:BUG: unable to handle kernel NULL pointer dereference at (null)
15:34:24:IP: [<(null)>] (null)
15:34:24:PGD 7bc31067 PUD 7bc38067 PMD 0 
15:34:24:Oops: 0010 [#1] SMP 
15:34:24:last sysfs file: /sys/devices/system/cpu/possible
15:34:24:CPU 0 
15:34:24:Modules linked in: osd_ldiskfs(U) fsfilt_ldiskfs(U) ldiskfs(U) lustre(U) ofd(U) ost(U) cmm(U) mdt(U) mdd(U) mds(U) mgs(U) jbd2 obdecho(U) mgc(U) lquota(U) lov(U) osc(U) mdc(U) lmv(U) fid(U) fld(U) ptlrpc(U) obdclass(U) lvfs(U) ksocklnd(U) lnet(U) sha512_generic sha256_generic libcfs(U) nfs fscache nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr ipv6 ib_sa ib_mad ib_core microcode virtio_balloon 8139too 8139cp mii i2c_piix4 i2c_core ext3 jbd mbcache virtio_blk virtio_pci virtio_ring virtio pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: speedstep_lib]
15:34:24:
15:34:24:Pid: 17619, comm: ll_ost00_007 Not tainted 2.6.32-279.5.1.el6_lustre.gb16fe80.x86_64 #1 Red Hat KVM
15:34:24:RIP: 0010:[<0000000000000000>]  [<(null)>] (null)
15:34:24:RSP: 0018:ffff88007b21bdf8  EFLAGS: 00010093
15:34:24:RAX: ffff88007b2a1e30 RBX: ffffffffffffffe8 RCX: 0000000000000000
15:34:24:RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88007b2a1e30
15:34:24:RBP: ffff88007b21be40 R08: 0000000000000000 R09: 0000000000000000
15:34:24:R10: 000000000000000f R11: 000000000000000f R12: 0000000000000000
15:34:24:R13: ffff880078a8a280 R14: 0000000000000000 R15: 0000000000000000
15:34:24:FS:  00007f0021cd2700(0000) GS:ffff880002200000(0000) knlGS:0000000000000000
15:34:24:CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
15:34:24:CR2: 0000000000000000000fffbc000 - 0000000100000000 (reserved)

Issue Links

• is related to: LU-1883 osd-ldiskfs fills file offsets into lnb->offset fields used as page offsets