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The crash occurs when adding a slave device to a team interface, triggered by FORTIFY_SOURCE detecting a buffer overflow. **System Information:** - Kernel: 7.1.0-rc6-160099.42-default+ (commit d548c6f4301b) - Architecture: powerpc64le (ppc64le) - Hardware: IBM POWER10 (9043-MRX), pSeries - Config: CONFIG_FORTIFY_SOURCE=y **Crash Location:** [ 3492.897824][T77143] kernel BUG at lib/string_helpers.c:1044! [ 3492.898057][T77143] NIP [c000000000ac1120] __fortify_panic+0x18/0x28 [ 3492.898096][T77143] [c00000000efdb350] [c00800000b857a18] team_add_slave+0xc60/0xcc0 [team] **Call Trace:** __fortify_panic+0x18/0x28 team_add_slave+0xc60/0xcc0 [team] do_set_master+0x19c/0x240 do_setlink.isra.0+0x388/0x1450 rtnl_newlink+0xac8/0x1030 rtnetlink_rcv_msg+0x450/0x530 netlink_rcv_skb+0x74/0x1b0 rtnetlink_rcv+0x24/0x40 netlink_unicast+0x2e0/0x430 netlink_sendmsg+0x210/0x580 ____sys_sendmsg+0x30c/0x470 ___sys_sendmsg+0x94/0xf0 __sys_sendmsg+0x84/0x100 system_call_exception+0x154/0x2b0 **Reproducer:** The crash is 100% reproducible via selftests: ```bash cd tools/testing/selftests make -C drivers/net/team run_tests Please add below reported-by tag: yeswanth Thanks, Yeswanth Krishna