Orabug:
27498770
The following panic was caught. Something wrong with the storage and io error
was returned, generic_readlink()->ext4_follow_link()->page_follow_link_light()
returned with NULL page and error link, then ext4_put_link() tried to free the
error link and panic.
[
25144440.198756] device-mapper: snapshots: Invalidating snapshot: Unable to allocate exception.
[
25144440.332969] Aborting journal on device dm-7-8.
[
25144440.338462] Buffer I/O error on dev dm-7, logical block
3702784, lost sync page write
[
25144440.342625] Buffer I/O error on dev dm-7, logical block 0, lost sync page write
[
25144440.342627] EXT4-fs error (device dm-7): ext4_journal_check_start:56: Detected aborted journal
[
25144440.342629] EXT4-fs (dm-7): Remounting filesystem read-only
[
25144440.342630] EXT4-fs (dm-7): previous I/O error to superblock detected
[
25144440.342634] Buffer I/O error on dev dm-7, logical block 0, lost sync page write
[
25144440.390336] JBD2: Error -5 detected when updating journal superblock for dm-7-8.
[
25144464.799979] Buffer I/O error on dev dm-7, logical block
1573499, lost async page write
[
25144464.809517] Buffer I/O error on dev dm-7, logical block
1573501, lost async page write
[
25144464.819048] Buffer I/O error on dev dm-7, logical block
1573659, lost async page write
[
25144464.828669] Buffer I/O error on dev dm-7, logical block
1573660, lost async page write
[
25144464.838207] Buffer I/O error on dev dm-7, logical block
1573662, lost async page write
[
25144464.847798] Buffer I/O error on dev dm-7, logical block
1573675, lost async page write
[
25144464.857326] Buffer I/O error on dev dm-7, logical block
1573677, lost async page write
[
25144464.866848] Buffer I/O error on dev dm-7, logical block
1573696, lost async page write
[
25144464.876383] Buffer I/O error on dev dm-7, logical block
1573698, lost async page write
[
25144464.885903] Buffer I/O error on dev dm-7, logical block
1573703, lost async page write
[
25144496.335355] ------------[ cut here ]------------
[
25144496.341039] kernel BUG at mm/slub.c:3413!
[
25144496.345997] invalid opcode: 0000 [#1] SMP
[
25144496.351074] Modules linked in: dm_snapshot dm_bufio nfnetlink_queue nfnetlink_log nfnetlink iptable_filter ip_tables oracleacfs(PO) oracleadvm(PO) oracleoks(PO) mpt3sas scsi_transport_sas raid_class nfsv3 nfs_acl rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs fscache lockd sunrpc grace ipmi_poweroff ipmi_devintf bonding rds_rdma rds ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad mlx4_ib mlx4_core dm_multipath bnx2i cnic uio cxgb4i libcxgbi cxgb4 ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ipv6 fuse iTCO_wdt iTCO_vendor_support sb_edac edac_core i2c_i801 lpc_ich mfd_core sg ixgbe dca ptp pps_core vxlan udp_tunnel ip6_udp_tunnel mdio ipmi_ssif i2c_core ipmi_si ipmi_msghandler wmi acpi_pad ext4 jbd2 mbcache sd_mod ahci libahci megaraid_sas dm_mirror
[
25144496.433281] dm_region_hash dm_log dm_mod
[
25144496.436514] CPU: 8 PID: 201734 Comm: tar Tainted: P O 4.1.12-61.28.1.el6uek.x86_64 #2
[
25144496.447204] Hardware name: Oracle Corporation ORACLE SERVER X6-2/ASM,MOTHERBOARD,1U, BIOS
38070000 12/16/2016
[
25144496.458974] task:
ffff888ce26d0e00 ti:
ffff888da1c50000 task.ti:
ffff888da1c50000
[
25144496.467999] RIP: 0010:[<
ffffffff811e5de9>] [<
ffffffff811e5de9>] kfree+0x159/0x170
[
25144496.477238] RSP: 0018:
ffff888da1c53da8 EFLAGS:
00010246
[
25144496.483734] RAX:
001fffff80000400 RBX:
fffffffffffffffb RCX:
ffffffffa00ee860
[
25144496.492480] RDX:
0000000000000000 RSI:
fffffffffffffffb RDI:
ffffea0001ffffc0
[
25144496.501116] RBP:
ffff888da1c53dc8 R08:
000000000001abc0 R09:
ffff885efec07480
[
25144496.509753] R10:
ffffffff8118b1b7 R11:
0000000000000000 R12:
0000000000000000
[
25144496.518425] R13:
ffffffffa00ee890 R14:
00000000fffffffb R15:
000000000000005f
[
25144496.527061] FS:
00007f949c3957a0(0000) GS:
ffff885eff400000(0000) knlGS:
0000000000000000
[
25144496.536769] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[
25144496.543674] CR2:
00007f47cdbd8d20 CR3:
0000006093b7b000 CR4:
00000000003406e0
[
25144496.552333] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[
25144496.560961] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[
25144496.569630] Stack:
[
25144496.572452]
ffff888da1c53de8 ffff8801e33e7bc0 0000000000000000 ffff888da1c53de8
[
25144496.581455]
ffff888da1c53dd8 ffffffffa00ee890 ffff888da1c53eb8 ffffffff8120f7ec
[
25144496.590422]
ffff888da1c53eb8 ffffffff812144c3 ffff88bec2658320 ffff8801e33e7bc0
[
25144496.599391] Call Trace:
[
25144496.602619] [<
ffffffffa00ee890>] ext4_put_link+0x30/0x40 [ext4]
[
25144496.609819] [<
ffffffff8120f7ec>] generic_readlink+0x8c/0xb0
[
25144496.616627] [<
ffffffff812144c3>] ? user_path_at_empty+0x63/0xa0
[
25144496.623816] [<
ffffffff8120a496>] SyS_readlinkat+0x116/0x130
[
25144496.630629] [<
ffffffff8120a0eb>] SyS_readlink+0x1b/0x20
[
25144496.637065] [<
ffffffff8169d76e>] system_call_fastpath+0x12/0x71
[
25144496.644278] Code: ff ff eb 8e 66 f7 07 00 c0 74 20 48 8b 07 31 f6 f6 c4 40 74 03 8b 77 68 e8 f5 d7 fa ff e9 70 ff ff ff 48 8b 7f 30 e9 19 ff ff ff <0f> 0b 0f 1f 44 00 00 eb f9 66 66 66 66 66 2e 0f 1f 84 00 00 00
[
25144496.667149] RIP [<
ffffffff811e5de9>] kfree+0x159/0x170
[
25144496.673496] RSP <
ffff888da1c53da8>
Mainline/uek5 not have this issue, as the ->following_link and ->put_link have
been refactored there. The patche set to do that is a little big, so I don't
bother to backport them, just write this small patch to fix the issue.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Ashish Samant <ashish.samant@oracle.com>
projects / users / jedix / linux-maple.git / commitdiff