bisecting fixing commit since a68a0262abdaa251e12c53715f48e698a18ef402 building syzkaller on c090b4da255257841173fb4eb18c19d69b293180 testing commit a68a0262abdaa251e12c53715f48e698a18ef402 with gcc (GCC) 8.1.0 kernel signature: c050303259cf3f8f0a81aea6f505ac3897d3abec94c507d45083e11a2095ad8f all runs: crashed: WARNING in ieee80211_bss_info_change_notify testing current HEAD 5ee88057889bbca5f5bb96031b62b3756b33e164 testing commit 5ee88057889bbca5f5bb96031b62b3756b33e164 with gcc (GCC) 8.1.0 kernel signature: b749f7f7e7f362f0f3926e718e1a67aaf76175310f7ebac2b05340402a312ac9 all runs: crashed: WARNING in ieee80211_bss_info_change_notify revisions tested: 2, total time: 15m21.589479776s (build: 9m3.977680062s, test: 5m49.228079057s) the crash still happens on HEAD commit msg: Merge tag 'drm-fixes-2021-01-15' of git://anongit.freedesktop.org/drm/drm crash: WARNING in ieee80211_bss_info_change_notify ------------[ cut here ]------------ wlan0: Failed check-sdata-in-driver check, flags: 0x4 WARNING: CPU: 0 PID: 10245 at net/mac80211/driver-ops.h:172 drv_bss_info_changed net/mac80211/driver-ops.h:172 [inline] WARNING: CPU: 0 PID: 10245 at net/mac80211/driver-ops.h:172 ieee80211_bss_info_change_notify+0x2fb/0x320 net/mac80211/main.c:210 Modules linked in: CPU: 0 PID: 10245 Comm: syz-executor.2 Not tainted 5.11.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:drv_bss_info_changed net/mac80211/driver-ops.h:172 [inline] RIP: 0010:ieee80211_bss_info_change_notify+0x2fb/0x320 net/mac80211/main.c:210 Code: 06 00 00 48 8d b3 60 06 00 00 48 c7 c7 b8 11 c3 84 c6 05 cb 7e 2e 02 01 8b 93 50 06 00 00 48 85 c0 48 0f 45 f0 e8 a9 b4 23 00 <0f> 0b e9 82 fe ff ff 0f 0b e9 95 fd ff ff 0f 0b e9 d5 fd ff ff 0f RSP: 0018:ffffc90002943a08 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88811f9fcbc0 RCX: 0000000000000001 RDX: 0000000080000001 RSI: ffffffff84b8d4e6 RDI: 00000000ffffffff RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000002 R12: ffff88811f9f0c80 R13: 0000000000000000 R14: ffff88811f9c3000 R15: ffffc90002943b38 FS: 00007f5790057700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9ebfe7d000 CR3: 000000011fad1000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_set_mcast_rate+0x2f/0x40 net/mac80211/cfg.c:2542 rdev_set_mcast_rate net/wireless/rdev-ops.h:1202 [inline] nl80211_set_mcast_rate+0xe0/0x210 net/wireless/nl80211.c:10278 genl_family_rcv_msg_doit.isra.17+0x102/0x140 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0xdb/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+0x276/0x4c0 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:2345 ___sys_sendmsg+0x77/0xb0 net/socket.c:2399 __sys_sendmsg+0x52/0xa0 net/socket.c:2432 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e159 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:00007f5790056c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e159 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005 RBP: 000000000119c068 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034 R13: 00007ffc4437b1df R14: 00007f57900579c0 R15: 000000000119c034