sysfs: cannot create duplicate filename '/class/ieee80211/â«´ìvE VÕ!' CPU: 0 PID: 20806 Comm: syz-executor4 Not tainted 4.19.0+ #80 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: ================================================================== BUG: KMSAN: uninit-value in get_stack_info+0x720/0x9d0 arch/x86/kernel/dumpstack_64.c:139 CPU: 0 PID: 20806 Comm: syz-executor4 Not tainted 4.19.0+ #80 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x419/0x480 lib/dump_stack.c:113 kmsan_report+0x19f/0x300 mm/kmsan/kmsan.c:911 __msan_warning+0x76/0xd0 mm/kmsan/kmsan_instr.c:415 get_stack_info+0x720/0x9d0 arch/x86/kernel/dumpstack_64.c:139 __unwind_start+0x7d/0xe0 arch/x86/kernel/unwind_frame.c:402 unwind_start arch/x86/include/asm/unwind.h:54 [inline] show_trace_log_lvl+0x20e/0x11e0 arch/x86/kernel/dumpstack.c:173 show_stack+0x12e/0x170 arch/x86/kernel/dumpstack.c:293 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x32d/0x480 lib/dump_stack.c:113 sysfs_warn_dup+0x19e/0x1c0 fs/sysfs/dir.c:30 sysfs_do_create_link_sd+0x293/0x380 fs/sysfs/symlink.c:50 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x125/0x190 fs/sysfs/symlink.c:91 device_add_class_symlinks drivers/base/core.c:1691 [inline] device_add+0x1620/0x2c90 drivers/base/core.c:1893 wiphy_register+0x2b9d/0x3990 net/wireless/core.c:832 ieee80211_register_hw+0x3b74/0x4cb0 net/mac80211/main.c:1092 mac80211_hwsim_new_radio+0x310b/0x50f0 drivers/net/wireless/mac80211_hwsim.c:2892 hwsim_new_radio_nl+0xb5d/0xef0 drivers/net/wireless/mac80211_hwsim.c:3374 genl_family_rcv_msg net/netlink/genetlink.c:601 [inline] genl_rcv_msg+0x185c/0x1a20 net/netlink/genetlink.c:626 netlink_rcv_skb+0x394/0x640 net/netlink/af_netlink.c:2454 genl_rcv+0x63/0x80 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x1699/0x1740 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x13c7/0x1440 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg net/socket.c:631 [inline] ___sys_sendmsg+0xe68/0x1250 net/socket.c:2116 __sys_sendmsg net/socket.c:2154 [inline] __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg+0x305/0x460 net/socket.c:2161 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2161 do_syscall_64+0xcf/0x110 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f21a5713c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f21a57146d4 netlink: 3756 bytes leftover after parsing attributes in process `syz-executor0'. R13: 00000000004c3aee R14: 00000000004d5bd8 R15: 00000000ffffffff Local variable description: ----state@show_trace_log_lvl Variable was created at: show_trace_log_lvl+0xb3/0x11e0 arch/x86/kernel/dumpstack.c:164 show_stack+0x12e/0x170 arch/x86/kernel/dumpstack.c:293 ==================================================================