From mboxrd@z Thu Jan 1 00:00:00 1970 From: sgr.m.pdy@gmail.com (Sagar Padhye) Date: Wed, 8 Oct 2014 12:43:58 +0530 Subject: Should I do anything about this warning? Message-ID: <20141008071356.GA20385@gmail.com> To: kernelnewbies@lists.kernelnewbies.org List-Id: kernelnewbies.lists.kernelnewbies.org Hi, I am new at kernel programming. I have written a driver for a custom device, running on arm board. It works well (for last few months). I happen to look at kernel logs and I seen, [231250.894334] ------------[ cut here ]------------ [231250.899146] WARNING: at kernel/workqueue.c:1953 process_one_work+0x398/0x52c() [231250.906491] Modules linked in: bcmdhd cfg80211 [231250.911885] [] (unwind_backtrace+0x0/0x144) from [] (dump_stack+0x20/0x24) [231250.920672] [] (dump_stack+0x20/0x24) from [] (warn_slowpath_common+0x5c/0x74) [231250.929757] [] (warn_slowpath_common+0x5c/0x74) from [] (warn_slowpath_null+0x2c/0x34) [231250.939581] [] (warn_slowpath_null+0x2c/0x34) from [] (process_one_work+0x398/0x52c) [231250.949232] [] (process_one_work+0x398/0x52c) from [] (rescuer_thread+0x184/0x230) [231250.958708] [] (rescuer_thread+0x184/0x230) from [] (kthread+0xac/0xb4) [231250.967236] [] (kthread+0xac/0xb4) from [] (kernel_thread_exit+0x0/0x8) [231250.975755] ---[ end trace 9f9c2187c0bee21b ]--- The device is still working after this. No issues in operation. I am just sceptical about analyzing this issue? Do I need to check more? If yes how? with this trace? Thanks, Sagar