Messages in this thread | | | From | "Victor Sologoubov" <> | Date | Fri, 26 Feb 1999 12:28:52 +0400 | Subject | PROBLEM: "bug: kernel timer added twice at c018879d" in 2.2.2 |
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I detected a bug in Linux kernel 2.2.2.
Description: message "bug: kernel timer added twice at c018879d" is displayed on mounting scsi cdrom. Mount command hangs and cannot be killed.
Investigation: investigation shows, that this message is printed by function add_timer in file kernel/sched.c. 2.2.2 added a consistency check to this function.
System.map shows that the address c018879d belongs to function scsi_sleep. This function is in drivers/scsi/scsi_error.c file. The timer, declared in this function, is not properly initialized. Field timer.prev is not initialized. It is used in a call to add_timer, which misunderstands it as added twice.
Victor Sologoubov
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