bisecting fixing commit since 3fdd47c3b40ac48e6e6e5904cf24d12e6e073a96 building syzkaller on d81b165e87aa21172574c227b0808df2957e29ce testing commit 3fdd47c3b40ac48e6e6e5904cf24d12e6e073a96 with gcc (GCC) 8.1.0 kernel signature: 537b1d59432b364bbba5370a7b4caa0ba7f6a0bfe2c465174411013a03b67b2b all runs: crashed: WARNING in ieee80211_check_rate_mask testing current HEAD 4e0396c59559264442963b349ab71f66e471f84d testing commit 4e0396c59559264442963b349ab71f66e471f84d with gcc (GCC) 8.1.0 kernel signature: 5bff850d4f6b7edeac1a22a332e4ead2e3825699827a15130b30fac611d64c18 all runs: crashed: WARNING in ieee80211_check_rate_mask revisions tested: 2, total time: 15m11.878789568s (build: 9m27.012577836s, test: 5m16.841828636s) the crash still happens on HEAD commit msg: net: marvell: prestera: fix compilation with CONFIG_BRIDGE=m crash: WARNING in ieee80211_check_rate_mask ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8392 at net/mac80211/rate.c:282 ieee80211_check_rate_mask+0x73/0xb0 net/mac80211/rate.c:273 Modules linked in: CPU: 0 PID: 8392 Comm: syz-executor.0 Not tainted 5.10.0-rc2-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 19 cd 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 c0 c3 bf 84 e8 6a 1f e6 fe eb ba 48 RSP: 0018:ffffc90002bcf990 EFLAGS: 00010246 RAX: ffff88811fa33350 RBX: ffff88811fac0000 RCX: 000000000000000c RDX: 0000000000000004 RSI: ffff88811fa33148 RDI: ffff88811fac0c00 RBP: ffffc90002bcfa18 R08: ffff88811fac1e58 R09: 0000000000000000 R10: 000000000000000c R11: 0000000000000005 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88811fa30580 R15: 0000000000000000 FS: 00007fb50a49b700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d7bd8b000 CR3: 00000001200ad000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_change_bss+0x19d/0x3d0 net/mac80211/cfg.c:2318 rdev_change_bss net/wireless/rdev-ops.h:394 [inline] nl80211_set_bss+0x1a8/0x2e0 net/wireless/nl80211.c:7013 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:651 [inline] sock_sendmsg+0x2b/0x40 net/socket.c:671 ____sys_sendmsg+0x1ed/0x230 net/socket.c:2353 ___sys_sendmsg+0x77/0xb0 net/socket.c:2407 __sys_sendmsg+0x52/0xa0 net/socket.c:2440 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:00007fb50a49ac78 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: 00007fffa727050f R14: 00007fb50a49b9c0 R15: 000000000118bf2c