On Freitag, 18. März 2016 12:45:42 CET Calvin Owens wrote: > In _base_make_ioc_operational(), we walk ioc->reply_queue_list and pull > a pointer out of successive elements of ioc->reply_post[] for each entry > in that list if RDPQ is enabled. > > Since the code pulls the pointer for the next iteration at the bottom of > the loop, it triggers the a KASAN dump on the final iteration: > > BUG: KASAN: slab-out-of-bounds in > _base_make_ioc_operational+0x47b7/0x47e0 [mpt3sas] at addr ffff880754816ab0 > Read of size 8 by task modprobe/305 > <snip> > Call Trace: > [<ffffffff81dfc591>] dump_stack+0x4d/0x6c > [<ffffffff814c9689>] print_trailer+0xf9/0x150 > [<ffffffff814ceda4>] object_err+0x34/0x40 > [<ffffffff814d1231>] kasan_report_error+0x221/0x530 > [<ffffffff814d1673>] __asan_report_load8_noabort+0x43/0x50 > [<ffffffffa0043637>] _base_make_ioc_operational+0x47b7/0x47e0 [mpt3sas] > [<ffffffffa0049a51>] mpt3sas_base_attach+0x1991/0x2120 [mpt3sas] > [<ffffffffa0053c93>] _scsih_probe+0xeb3/0x16b0 [mpt3sas] > [<ffffffff81ebd047>] local_pci_probe+0xc7/0x170 > [<ffffffff81ebf2cf>] pci_device_probe+0x20f/0x290 > [<ffffffff820d50cd>] really_probe+0x17d/0x600 > [<ffffffff820d56a3>] __driver_attach+0x153/0x190 > [<ffffffff820cffac>] bus_for_each_dev+0x11c/0x1a0 > [<ffffffff820d421d>] driver_attach+0x3d/0x50 > [<ffffffff820d378a>] bus_add_driver+0x44a/0x5f0 > [<ffffffff820d666c>] driver_register+0x18c/0x3b0 > [<ffffffff81ebcb76>] __pci_register_driver+0x156/0x200 > [<ffffffffa00c8135>] _mpt3sas_init+0x135/0x1000 [mpt3sas] > [<ffffffff81000423>] do_one_initcall+0x113/0x2b0 > [<ffffffff813caa5a>] do_init_module+0x1d0/0x4d8 > [<ffffffff81273909>] load_module+0x6729/0x8dc0 > [<ffffffff81276123>] SYSC_init_module+0x183/0x1a0 > [<ffffffff8127625e>] SyS_init_module+0xe/0x10 > [<ffffffff828fe7d7>] entry_SYSCALL_64_fastpath+0x12/0x6a > > Fix this by pulling the value at the beginning of the loop. > > Signed-off-by: Calvin Owens <calvinowens@xxxxxx> Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx> -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- 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
