On Fri, 2008-05-02 at 18:27 +0900, KOSAKI Motohiro wrote: > Hi > > On ia64 2.6.25-mm1, below message is displayed at stress test running. > Is it bug or not? This surely is a bug. I bet this was introduced by Hidetoshi's latest commit: commit 38477ad75188b2a7370fef7145f956e6c446928b Author: Hidetoshi Seto Date: Mon Apr 21 14:34:39 2008 -0700 [IA64] disable interrupts on exit of ia64_trace_syscall Obviously, if interrupts are disabled and notify_resume_user synchronizes the RBS, the following condition in __might_sleep() is true: if ((in_atomic() || irqs_disabled()) && Cheers, Petr Tesarik --------------------------------------------- > BUG: sleeping function called from invalid context at kernel/rwsem.c:21 > in_atomic():0, irqs_disabled():1 > > Call Trace: > [<a000000100015d00>] show_stack+0x80/0xa0 > sp=e00001608577f840 bsp=e000016085771038 > [<a000000100015d50>] dump_stack+0x30/0x60 > sp=e00001608577fa10 bsp=e000016085771020 > [<a000000100092e80>] __might_sleep+0x1e0/0x2e0 > sp=e00001608577fa10 bsp=e000016085770ff0 > [<a000000100791f00>] down_read+0x20/0x60 > sp=e00001608577fa10 bsp=e000016085770fd0 > [<a00000010015cd50>] access_process_vm+0x70/0x3a0 > sp=e00001608577fa10 bsp=e000016085770f28 > [<a000000100030f60>] ia64_sync_kernel_rbs+0x40/0x100 > sp=e00001608577fa20 bsp=e000016085770ef0 > [<a00000010002f640>] do_sync_rbs+0xc0/0x100 > sp=e00001608577fa30 bsp=e000016085770ec0 > [<a00000010000b250>] unw_init_running+0x70/0xa0 > sp=e00001608577fa40 bsp=e000016085770e98 > [<a000000100033ee0>] ia64_sync_krbs+0x80/0xa0 > sp=e00001608577fe20 bsp=e000016085770e80 > [<a0000001000168a0>] do_notify_resume_user+0x1c0/0x1e0 > sp=e00001608577fe20 bsp=e000016085770e50 > [<a00000010000b0e0>] notify_resume_user+0x40/0x60 > sp=e00001608577fe20 bsp=e000016085770e00 > [<a00000010000b010>] skip_rbs_switch+0xe0/0x110 > sp=e00001608577fe30 bsp=e000016085770e00 > [<a000000000010720>] __kernel_syscall_via_break+0x0/0x20 > sp=e000016085780000 bsp=e000016085770e0 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-ia64" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html
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