From: wang di <di.wang@xxxxxxxxx> Because ofd_get_info(KEY_FIEMAP) might be called from ptlrpc_server_handle_req_in(see the stack below), where env might not be initialized correctly(see LBUG below), so it refill refill in ofd_get_info. LutreError: 19182:0:(ofd_internal.h:518:ofd_info_init()) LBUG Pid: 19182, comm: ll_ost_io00_001 Call Trace: [<ffffffffa044e895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [<ffffffffa044ee97>] lbug_with_loc+0x47/0xb0 [libcfs] [<ffffffffa0e03e62>] ofd_info_init+0x92/0x130 [ofd] [<ffffffffa0e05835>] ofd_get_info+0x2e5/0xa90 [ofd] [<ffffffff812805cd>] ? pointer+0x8d/0x830 [<ffffffffa029f7e5>] ? lprocfs_counter_add+0x125/0x182 [lvfs] [<ffffffffa078528a>] nrs_orr_range_fill_physical+0x18a/0x540 [ptlrpc] [<ffffffffa0762dd6>] ? __req_capsule_get+0x166/0x700 [ptlrpc] [<ffffffffa073e630>] ? lustre_swab_ost_body+0x0/0x10 [ptlrpc] [<ffffffffa07871d7>] nrs_orr_res_get+0x817/0xb80 [ptlrpc] [<ffffffffa077d306>] nrs_resource_get+0x56/0x110 [ptlrpc] [<ffffffffa077dccb>] nrs_resource_get_safe+0x8b/0x100 [ptlrpc] [<ffffffffa0780248>] ptlrpc_nrs_req_initialize+0x38/0x90 [ptlrpc] [<ffffffffa074cff0>] ptlrpc_main+0x1170/0x16f0 [ptlrpc] [<ffffffffa074be80>] ? ptlrpc_main+0x0/0x16f0 [ptlrpc] [<ffffffff8100c0ca>] child_rip+0xa/0x20 [<ffffffffa074be80>] ? ptlrpc_main+0x0/0x16f0 [ptlrpc] [<ffffffffa074be80>] ? ptlrpc_main+0x0/0x16f0 [ptlrpc] [<ffffffff8100c0c0>] ? child_rip+0x0/0x20 [picked ptlrpc part for upstream kernel submission] Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3239 Lustre-change: http://review.whamcloud.com/6204 Signed-off-by: wang di <di.wang@xxxxxxxxx> Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@xxxxxxxxx> Reviewed-by: Andreas Dilger <andreas.dilger@xxxxxxxxx> Reviewed-by: Nikitas Angelinas <nikitas_angelinas@xxxxxxxxxxx> Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> Signed-off-by: Peng Tao <tao.peng@xxxxxxx> Signed-off-by: Andreas Dilger <andreas.dilger@xxxxxxxxx> --- drivers/staging/lustre/lustre/ptlrpc/service.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/staging/lustre/lustre/ptlrpc/service.c b/drivers/staging/lustre/lustre/ptlrpc/service.c index 80111273..1667b8e 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/service.c +++ b/drivers/staging/lustre/lustre/ptlrpc/service.c @@ -2396,6 +2396,7 @@ static int ptlrpc_main(void *arg) /* Process all incoming reqs before handling any */ if (ptlrpc_server_request_incoming(svcpt)) { lu_context_enter(&env->le_ctx); + env->le_ses = NULL; ptlrpc_server_handle_req_in(svcpt, thread); lu_context_exit(&env->le_ctx); -- 1.7.9.5 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
