[LU-4179] LBUG ASSERTION( !lustre_handle_is_used(&lhc->mlh_reg_lh) ) failed:

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.6.0, Lustre 2.4.2, Lustre 2.5.1
• Affects Version/s: Lustre 2.4.0, Lustre 2.4.1
• Labels: server
• Environment: our source is at git://github.com/jlan/lustre-nas.git
• Severity: 3

Epic

server

• Assignee: Di Wang
• Reporter: Mahmoud Hanafi

Description

We have the crash dumps. But requires analysis by US personal only.

LustreError: 6425:0:(mdt_open.c:1690:mdt_reint_open()) ASSERTION( !lustre_handle_is_used(&lhc->mlh_reg_lh) ) failed: ^M
LustreError: 6425:0:(mdt_open.c:1690:mdt_reint_open()) LBUG^M
4>Pid: 6425, comm: mdt01_002^M
<4>^M
<4>Call Trace:^M
<4> [<ffffffffa041f895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]^M
<4> [<ffffffffa041fe97>] lbug_with_loc+0x47/0xb0 [libcfs]^M
<4> [<ffffffffa0ca7553>] mdt_reint_open+0x1973/0x20c0 [mdt]^M
<4> [<ffffffffa0ca832c>] mdt_reconstruct_open+0x68c/0xc30 [mdt]^M
<4> [<ffffffffa072d6a6>] ? __req_capsule_get+0x166/0x700 [ptlrpc]^M
<4> [<ffffffffa07061ae>] ? lustre_pack_reply_flags+0xae/0x1f0 [ptlrpc]^M
<4> [<ffffffffa0c9b195>] mdt_reconstruct+0x45/0x120 [mdt]^M
<4> [<ffffffffa0c76cfb>] mdt_reint_internal+0x6bb/0x780 [mdt]^M
<4> [<ffffffffa0c7708d>] mdt_intent_reint+0x1ed/0x520 [mdt]^M
<4> [<ffffffffa0c74f3e>] mdt_intent_policy+0x39e/0x720 [mdt]^M
<4> [<ffffffffa06bd7e1>] ldlm_lock_enqueue+0x361/0x8d0 [ptlrpc]^M
<4> [<ffffffffa06e424f>] ldlm_handle_enqueue0+0x4ef/0x10b0 [ptlrpc]^M
<4> [<ffffffffa0c753c6>] mdt_enqueue+0x46/0xe0 [mdt]^M
<4> [<ffffffffa0c7bab7>] mdt_handle_common+0x647/0x16d0 [mdt]^M
<4> [<ffffffffa0706c0c>] ? lustre_msg_get_transno+0x8c/0x100 [ptlrpc]^M
<4> [<ffffffffa0cb5295>] mds_regular_handle+0x15/0x20 [mdt]^M
<4> [<ffffffffa0716428>] ptlrpc_server_handle_request+0x398/0xc60 [ptlrpc]^M
<4> [<ffffffffa04205de>] ? cfs_timer_arm+0xe/0x10 [libcfs]^M
<4> [<ffffffffa0431dbf>] ? lc_watchdog_touch+0x6f/0x170 [libcfs]^M
<4> [<ffffffffa070d789>] ? ptlrpc_wait_event+0xa9/0x290 [ptlrpc]^M
<4> [<ffffffff810557f3>] ? __wake_up+0x53/0x70^M
<4> [<ffffffffa07177be>] ptlrpc_main+0xace/0x1700 [ptlrpc]^M
<4> [<ffffffffa0716cf0>] ? ptlrpc_main+0x0/0x1700 [ptlrpc]^M
<4> [<ffffffff8100c0ca>] child_rip+0xa/0x20^M
<4> [<ffffffffa0716cf0>] ? ptlrpc_main+0x0/0x1700 [ptlrpc]^M
<4> [<ffffffffa0716cf0>] ? ptlrpc_main+0x0/0x1700 [ptlrpc]^M
<4> [<ffffffff8100c0c0>] ? child_rip+0x0/0x20^M
<4>^M
<0>Kernel panic - not syncing: LBUG^M
<4>Pid: 6425, comm: mdt01_002 Tainted: G --------------- T 2.6.32-358.6.2.el6.20130607.x86_64.lustre240 #1^M
<4>Call Trace:^M
<4> [<ffffffff8153e8da>] ? panic+0xa7/0x190^M
<4> [<ffffffffa041feeb>] ? lbug_with_loc+0x9b/0xb0 [libcfs]^M
<4> [<ffffffffa0ca7553>] ? mdt_reint_open+0x1973/0x20c0 [mdt]^M
<4> [<ffffffffa0ca832c>] ? mdt_reconstruct_open+0x68c/0xc30 [mdt]^M
<4> [<ffffffffa072d6a6>] ? __req_capsule_get+0x166/0x700 [ptlrpc]^M
<4> [<ffffffffa07061ae>] ? lustre_pack_reply_flags+0xae/0x1f0 [ptlrpc]^M
<4> [<ffffffffa0c9b195>] ? mdt_reconstruct+0x45/0x120 [mdt]^M
<4> [<ffffffffa0c76cfb>] ? mdt_reint_internal+0x6bb/0x780 [mdt]^M
<4> [<ffffffffa0c7708d>] ? mdt_intent_reint+0x1ed/0x520 [mdt]^M
<4> [<ffffffffa0c74f3e>] ? mdt_intent_policy+0x39e/0x720 [mdt]^M
<4> [<ffffffffa06bd7e1>] ? ldlm_lock_enqueue+0x361/0x8d0 [ptlrpc]^M
<4> [<ffffffffa06e424f>] ? ldlm_handle_enqueue0+0x4ef/0x10b0 [ptlrpc]^M
<4> [<ffffffffa0c753c6>] ? mdt_enqueue+0x46/0xe0 [mdt]^M
<4> [<ffffffffa0c7bab7>] ? mdt_handle_common+0x647/0x16d0 [mdt]^M
<4> [<ffffffffa0706c0c>] ? lustre_msg_get_transno+0x8c/0x100 [ptlrpc]^M
<4> [<ffffffffa0cb5295>] ? mds_regular_handle+0x15/0x20 [mdt]^M
<4> [<ffffffffa0716428>] ? ptlrpc_server_handle_request+0x398/0xc60 [ptlrpc]^M
<4> [<ffffffffa04205de>] ? cfs_timer_arm+0xe/0x10 [libcfs]^M
<4> [<ffffffffa0431dbf>] ? lc_watchdog_touch+0x6f/0x170 [libcfs]^M
<4> [<ffffffffa070d789>] ? ptlrpc_wait_event+0xa9/0x290 [ptlrpc]^M
<4> [<ffffffff810557f3>] ? __wake_up+0x53/0x70^M
<4> [<ffffffffa07177be>] ? ptlrpc_main+0xace/0x1700 [ptlrpc]^M
<4> [<ffffffffa0716cf0>] ? ptlrpc_main+0x0/0x1700 [ptlrpc]^M
<4> [<ffffffff8100c0ca>] ? child_rip+0xa/0x20^M
<4> [<ffffffffa0716cf0>] ? ptlrpc_main+0x0/0x1700 [ptlrpc]^M
<4> [<ffffffffa0716cf0>] ? ptlrpc_main+0x0/0x1700 [ptlrpc]^M
<4> [<ffffffff8100c0c0>] ? child_rip+0x0/0x20^M

Issue Links

• is related to: LU-3607 Interop 2.3.0<->2.5 failure on test suite racer test_1: ASSERTION( !lustre_handle_is_used(&lhc->mlh_reg_lh) ) failed