I tried UBSAN on one of my servers with QLogic FC adapter and got the following UBSAN warning on x86-64: [ 4.250370] ================================================================================ [ 4.250692] UBSAN: Undefined behaviour in drivers/scsi/qla2xxx/qla_isr.c:2500:14 [ 4.251004] shift exponent 32 is too large for 32-bit type 'int' [ 4.251182] CPU: 1 PID: 1877 Comm: systemd-udevd Tainted: G I 4.7.0-rc6 #2 [ 4.251507] Hardware name: HP ProLiant DL360 G6, BIOS P64 01/22/2015 [ 4.251689] 0000000000000001 ffff88030ec3b698 ffffffff8143377f 0000000000000034 [ 4.252135] ffff88030ec3b6c0 ffffffffa05416e0 ffff88030ec3b6b0 ffffffff8148a6dd [ 4.252584] 0000000000000020 ffff88030ec3b740 ffffffff8148ad29 0000000000000002 [ 4.253033] Call Trace: [ 4.253210] [<ffffffff8143377f>] dump_stack+0x4e/0x6f [ 4.253392] [<ffffffff8148a6dd>] ubsan_epilogue+0xd/0x40 [ 4.253569] [<ffffffff8148ad29>] __ubsan_handle_shift_out_of_bounds+0xf9/0x150 [ 4.253885] [<ffffffff811375b1>] ? try_to_del_timer_sync+0x51/0x90 [ 4.254105] [<ffffffff81137732>] ? del_timer_sync+0x22/0x60 [ 4.254305] [<ffffffffa048c07a>] qla24xx_mbx_completion+0x13a/0x170 [qla2xxx] [ 4.254629] [<ffffffffa0493daf>] qla24xx_intr_handler+0x20f/0x3b0 [qla2xxx] [ 4.254818] [<ffffffffa04749e4>] qla2x00_mailbox_command+0x644/0xf70 [qla2xxx] [ 4.255131] [<ffffffff81440006>] ? __rb_insert_augmented+0x3c6/0x640 [ 4.255320] [<ffffffffa04b4850>] ? qla82xx_get_flash_version+0x5a0/0x5a0 [qla2xxx] [ 4.255689] [<ffffffffa0476481>] qla2x00_mbx_reg_test+0xa1/0x140 [qla2xxx] [ 4.255880] [<ffffffffa0466866>] qla24xx_chip_diag+0x66/0xe0 [qla2xxx] [ 4.256065] [<ffffffffa046e9a8>] qla2x00_initialize_adapter+0x2b8/0xa30 [qla2xxx] [ 4.256388] [<ffffffffa045ede1>] qla2x00_probe_one+0x1021/0x2e20 [qla2xxx] [ 4.256569] [<ffffffff81321fb7>] ? kernfs_activate+0x87/0x160 [ 4.256747] [<ffffffff8149cf19>] local_pci_probe+0x59/0xf0 [ 4.256922] [<ffffffff8149ed4b>] pci_device_probe+0x14b/0x1c0 [ 4.257104] [<ffffffff8162ada0>] driver_probe_device+0x110/0x6d0 [ 4.257280] [<ffffffff8162b44e>] __driver_attach+0xee/0x150 [ 4.257457] [<ffffffff8162b360>] ? driver_probe_device+0x6d0/0x6d0 [ 4.257635] [<ffffffff81627dc7>] bus_for_each_dev+0x67/0xb0 [ 4.257813] [<ffffffff8162a2b2>] driver_attach+0x22/0x40 [ 4.257989] [<ffffffff81629a72>] bus_add_driver+0x172/0x340 [ 4.258211] [<ffffffffa0211000>] ? 0xffffffffa0211000 [ 4.258389] [<ffffffff8162c028>] driver_register+0x78/0x130 [ 4.258567] [<ffffffff8149c782>] __pci_register_driver+0x62/0xa0 [ 4.258751] [<ffffffffa02111c9>] qla2x00_module_init+0x1c9/0x217 [qla2xxx] [ 4.258931] [<ffffffff8100046c>] do_one_initcall+0x5c/0x1e0 [ 4.259114] [<ffffffff81252c93>] ? kfree+0x153/0x260 [ 4.259291] [<ffffffff81251ca1>] ? kmem_cache_alloc+0xc1/0x170 [ 4.259470] [<ffffffff811b7ad4>] do_init_module+0x91/0x25f [ 4.259647] [<ffffffff81160e25>] load_module+0x21e5/0x3570 [ 4.259826] [<ffffffff8115db20>] ? resolve_symbol_wait+0x170/0x170 [ 4.260006] [<ffffffff81279191>] ? kernel_read+0x61/0xe0 [ 4.260191] [<ffffffff811623c3>] SYSC_finit_module+0xc3/0xf0 [ 4.260367] [<ffffffff81162409>] SyS_finit_module+0x9/0x10 [ 4.260575] [<ffffffff81002a21>] do_syscall_64+0x71/0x150 [ 4.260755] [<ffffffff81933880>] entry_SYSCALL64_slow_path+0x25/0x25 [ 4.260933] ================================================================================ -- Meelis Roos (mroos@xxxxxxxx) -- 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
