After an unsuccessful attempt to contact linuxraid@xxxxxxx, I'm trying to seek assistance on this list. I've been seeing WARNINGs upon boot for a while now, without any obvious symptoms. I got some advice to report it upstream on the hardened-gentoo mailing list from PaX Team: "twa_interrupt is from the 3ware 9xxx driver and it seems that it wants to unmap a page it doesn't own. DEBUG_INFO and addr2line would help to identify the bad call in twa_interrupt (ffffffffxxxxxxxx in the below trace) then you can send it upstream ;)." Where xxxxxxxx was an address taken from a previous trace. I've recompiled the kernel with DEBUG_INFO and FRAME_POINTERS enabled. Here is a current trace I see after booting that kernel: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at drivers/iommu/intel-iommu.c:3214 intel_unmap+0x186/0x1f0() Driver unmaps unmatched page at PFN 0 Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.1.7-hardened-r1 #2 Hardware name: System manufacturer System Product Name/Z8P(N)E-D12(X), BIOS 1302 06/25/2012 ffffffffab40bd6b 0000000000000000 0000000000000000 ffffffffab21608f ffff880237c03ca8 ffffffffa4ed0fa6 00000000000015d2 ffff880237c03d00 ffff880237c03ce8 ffffffffa40ad9a0 0000000000000000 ffffffffab21608f Call Trace: <IRQ> [<ffffffffa4ed0fa6>] dump_stack+0x45/0x5d [<ffffffffa40ad9a0>] warn_slowpath_common+0x80/0xc0 [<ffffffffa40ada44>] warn_slowpath_fmt+0x64/0x90 [<ffffffffa46de866>] intel_unmap+0x186/0x1f0 [<ffffffffa46de8ea>] intel_unmap_sg+0x1a/0x30 [<ffffffffa475ef13>] scsi_dma_unmap+0x73/0x90 [<ffffffffa47b8683>] twa_interrupt+0x493/0x780 [<ffffffffa4100f7a>] handle_irq_event_percpu+0x7a/0x130 [<ffffffffa4101069>] handle_irq_event+0x39/0x60 [<ffffffffa4104469>] handle_fasteoi_irq+0x89/0x1a0 [<ffffffffa4005715>] handle_irq+0x85/0x160 [<ffffffffa4004f6c>] do_IRQ+0x4c/0x100 [<ffffffffa4edd557>] common_interrupt+0x97/0x97 <EOI> [<ffffffffa403d1cc>] ? default_send_IPI_mask_allbutself_phys+0xbc/0x100 [<ffffffffa4042e79>] physflat_send_IPI_allbutself+0x19/0x30 [<ffffffffa40385d8>] native_send_call_func_ipi+0x108/0x140 [<ffffffffa4125c10>] ? proc_dma_show+0x70/0x70 [<ffffffffa41264f4>] smp_call_function_many+0x1c4/0x270 [<ffffffffa4126671>] kick_all_cpus_sync+0x21/0x30 [<ffffffffa41bb546>] __do_tune_cpucache+0x56/0x4d0 [<ffffffffa458f4b7>] ? string.isra.3+0x47/0x100 [<ffffffffa41bb9f7>] do_tune_cpucache+0x37/0xb0 [<ffffffffa41bbad5>] enable_cpucache+0x65/0x130 [<ffffffffa4ec5c13>] setup_cpu_cache+0x173/0x270 [<ffffffffa41bc2c2>] __kmem_cache_create+0x262/0x360 [<ffffffffa418a5c2>] do_kmem_cache_create+0x92/0x1d0 [<ffffffffa418a81e>] kmem_cache_create+0x11e/0x1d0 [<ffffffffafc4c3d0>] ? twa_init+0x36/0x36 [<ffffffffafc4c4a7>] init_sd+0xd7/0x198 [<ffffffffa4000384>] do_one_initcall+0x94/0x1a0 [<ffffffffafc15285>] kernel_init_freeable+0x183/0x22f [<ffffffffa4ec44f0>] ? rest_init+0x80/0x80 [<ffffffffa4ec44f9>] kernel_init+0x9/0xf0 [<ffffffffa4edcdfe>] ret_from_fork+0x3e/0x70 [<ffffffffa4ec44f0>] ? rest_init+0x80/0x80 ---[ end trace a39a5826ea41aa47 ]--- The 3ware card is a 9650SE-12ML running in a Asus Z8PE-D12X motherboard. I don't know the exact command I have to type to get a meaningful output for addr2line... Please let me know what else I should do in order to provide more info. Thanks: Dw. -- dr Tóth Attila, Radiológus, 06-20-825-8057 Attila Toth MD, Radiologist, +36-20-825-8057 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
