bisecting fixing commit since 3fdd47c3b40ac48e6e6e5904cf24d12e6e073a96 building syzkaller on d81b165e87aa21172574c227b0808df2957e29ce testing commit 3fdd47c3b40ac48e6e6e5904cf24d12e6e073a96 with gcc (GCC) 8.1.0 kernel signature: 2f7ca72a6936bf5125d2feb4d41a44b09821777f6e76d6b7e1bd668427c60c00 all runs: crashed: WARNING in ieee80211_check_rate_mask testing current HEAD 3db1a3fa98808aa90f95ec3e0fa2fc7abf28f5c9 testing commit 3db1a3fa98808aa90f95ec3e0fa2fc7abf28f5c9 with gcc (GCC) 8.1.0 kernel signature: dd919b9ccdc4c8c09b0d255d391794271e4629c6b00769a721514125f70a7253 all runs: crashed: WARNING in ieee80211_check_rate_mask revisions tested: 2, total time: 16m2.122445571s (build: 10m11.754229806s, test: 5m18.371969148s) the crash still happens on HEAD commit msg: Merge tag 'staging-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging crash: WARNING in ieee80211_check_rate_mask netlink: 20 bytes leftover after parsing attributes in process `syz-executor.3'. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7637 at net/mac80211/rate.c:282 ieee80211_check_rate_mask+0x73/0xb0 net/mac80211/rate.c:273 Modules linked in: CPU: 0 PID: 7637 Comm: syz-executor.3 Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ieee80211_check_rate_mask+0x73/0xb0 net/mac80211/rate.c:282 Code: 04 4d 8b 7f 40 41 8b 8e 58 0b 00 00 77 31 41 85 cd 0f 84 b8 e1 2b 00 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 0b eb ed <0f> 0b eb e9 48 89 ee 48 c7 c7 60 f3 bf 84 e8 fa 17 e5 fe eb ba 48 RSP: 0018:ffffc9000277b990 EFLAGS: 00010246 RAX: ffff88811820b350 RBX: ffff888118248000 RCX: 000000000000000c RDX: 0000000000000004 RSI: ffff88811820b148 RDI: ffff888118248bc0 RBP: ffffc9000277ba18 R08: ffff888118249e18 R09: 0000000000000000 R10: 000000000000000c R11: 0000000000000005 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888118208580 R15: 0000000000000000 FS: 00007f45116be700(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000074a1a8 CR3: 0000000118617006 CR4: 00000000001706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_change_bss+0x19d/0x3d0 net/mac80211/cfg.c:2317 rdev_change_bss net/wireless/rdev-ops.h:394 [inline] nl80211_set_bss+0x1a8/0x2e0 net/wireless/nl80211.c:7091 genl_family_rcv_msg_doit.isra.18+0x102/0x140 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0xd8/0x1e0 net/netlink/genetlink.c:800 netlink_rcv_skb+0x49/0xf0 net/netlink/af_netlink.c:2494 genl_rcv+0x1f/0x30 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x19a/0x270 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x248/0x480 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0x2b/0x40 net/socket.c:672 ____sys_sendmsg+0x1ed/0x230 net/socket.c:2336 ___sys_sendmsg+0x77/0xb0 net/socket.c:2390 __sys_sendmsg+0x52/0xa0 net/socket.c:2423 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45de29 Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f45116bdc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002b840 RCX: 000000000045de29 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffc6aa22e6f R14: 00007f45116be9c0 R15: 000000000118bf2c