Comment 62 for bug 1958770

Still present in 5.15.0-48-lowlatency as well. Interestingly, the logs say the kernel is tainted in generic, but not in lowlatency, despite no other configuration changes when this is handled.

9/1/22 8:01 AM kernel ================================================================================
9/1/22 8:01 AM kernel UBSAN: array-index-out-of-bounds in /build/linux-lowlatency-FlX6Pk/linux-lowlatency-5.15.0/drivers/net/ethernet/aquantia/atlantic/aq_nic.c:1262:48
9/1/22 8:01 AM kernel index 8 is out of range for type 'aq_vec_s *[8]'
9/1/22 8:01 AM kernel CPU: 0 PID: 2103 Comm: daemon-init Not tainted 5.15.0-48-lowlatency #54-Ubuntu
9/1/22 8:01 AM kernel Hardware name: To Be Filled By O.E.M. X570 Creator/X570 Creator, BIOS P3.72 05/17/2022
9/1/22 8:01 AM kernel Call Trace:
9/1/22 8:01 AM kernel <TASK>
9/1/22 8:01 AM kernel show_stack+0x52/0x5c
9/1/22 8:01 AM kernel dump_stack_lvl+0x4a/0x63
9/1/22 8:01 AM kernel dump_stack+0x10/0x16
9/1/22 8:01 AM kernel ubsan_epilogue+0x9/0x49
9/1/22 8:01 AM kernel __ubsan_handle_out_of_bounds.cold+0x44/0x49
9/1/22 8:01 AM kernel ? call_netdevice_notifiers+0x38/0x50
9/1/22 8:01 AM kernel ? aq_vec_stop+0x72/0x80 [atlantic]
9/1/22 8:01 AM kernel aq_nic_stop+0x1b6/0x1c0 [atlantic]
9/1/22 8:01 AM kernel aq_ndev_set_features+0x143/0x1a0 [atlantic]
9/1/22 8:01 AM kernel __netdev_update_features+0x184/0x820
9/1/22 8:01 AM kernel dev_disable_lro+0x34/0x150
9/1/22 8:01 AM kernel devinet_sysctl_forward+0x1fb/0x230
9/1/22 8:01 AM kernel proc_sys_call_handler+0x161/0x2d0
9/1/22 8:01 AM kernel proc_sys_write+0x13/0x20
9/1/22 8:01 AM kernel new_sync_write+0x117/0x1b0
9/1/22 8:01 AM kernel ? io_req_prep_async+0x2a0/0x2a0
9/1/22 8:01 AM kernel vfs_write+0x1fb/0x290
9/1/22 8:01 AM kernel ksys_write+0x67/0xf0
9/1/22 8:01 AM kernel __x64_sys_write+0x19/0x20
9/1/22 8:01 AM kernel do_syscall_64+0x5c/0xc0
9/1/22 8:01 AM kernel ? do_syscall_64+0x69/0xc0
9/1/22 8:01 AM kernel ? syscall_exit_to_user_mode+0x27/0x50
9/1/22 8:01 AM kernel ? irqentry_exit+0x3b/0x50
9/1/22 8:01 AM kernel ? exc_page_fault+0x89/0x190
9/1/22 8:01 AM kernel entry_SYSCALL_64_after_hwframe+0x61/0xcb
9/1/22 8:01 AM kernel RIP: 0033:0x7f79df4f1a6f
9/1/22 8:01 AM kernel Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 19 c0 f7 ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 5c c0 f7 ff 48
9/1/22 8:01 AM kernel RSP: 002b:00007f799f7fd810 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
9/1/22 8:01 AM kernel RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f79df4f1a6f
9/1/22 8:01 AM kernel RDX: 0000000000000002 RSI: 00007f79dfe7a5e5 RDI: 0000000000000013
9/1/22 8:01 AM kernel RBP: 00007f79dfe7a5e5 R08: 0000000000000000 R09: 0000000000000001
9/1/22 8:01 AM kernel R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000013
9/1/22 8:01 AM kernel R13: 0000000000000013 R14: 0000000000000000 R15: 00007f7994024a70
9/1/22 8:01 AM kernel </TASK>
9/1/22 8:01 AM kernel ================================================================================