bisecting fixing commit since 92bf22614b21a2706f4993b278017e437f7785b3 building syzkaller on 2ce644fcea660c78bc6a3ce7e05079a730743671 testing commit 92bf22614b21a2706f4993b278017e437f7785b3 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: 656c6919f3cbfbcdb2f4fa9f0d9830947266cd0060d27900fc735569d105a044 all runs: crashed: WARNING in drv_remove_interface testing current HEAD f3438b4c4e692b49b7dc2bab864d20381024be16 testing commit f3438b4c4e692b49b7dc2bab864d20381024be16 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.1 kernel signature: d94811b127553afe8273521e1ccdab8dd1d8285ba93ed723d48b14efc28e0850 all runs: crashed: WARNING in drv_remove_interface revisions tested: 2, total time: 20m46.962810733s (build: 13m1.064841753s, test: 6m57.036189816s) the crash still happens on HEAD commit msg: Merge tag '5.14-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6 crash: WARNING in drv_remove_interface ------------[ cut here ]------------ wlan0: Failed check-sdata-in-driver check, flags: 0x4 WARNING: CPU: 0 PID: 10667 at net/mac80211/driver-ops.c:97 drv_remove_interface+0x2dc/0x340 net/mac80211/driver-ops.c:97 Modules linked in: CPU: 0 PID: 10667 Comm: syz-executor.2 Not tainted 5.14.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:drv_remove_interface+0x2dc/0x340 net/mac80211/driver-ops.c:97 Code: c1 e9 03 80 3c 01 00 75 72 48 8b 83 40 06 00 00 48 8d b3 60 06 00 00 48 c7 c7 20 df b4 89 48 85 c0 48 0f 45 f0 e8 c2 cc 63 00 <0f> 0b eb 90 e8 4b a2 f6 f9 e9 ff fd ff ff 4c 89 ef e8 2e a2 f6 f9 RSP: 0018:ffffc9000b76f7a0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff888041a18c00 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff88fbf2e0 RDI: fffff520016edee6 RBP: ffff888013708d20 R08: 0000000000000001 R09: ffff8880ba02ff47 R10: ffffed1017405fe8 R11: 46203a306e616c77 R12: ffff88801370a8d8 R13: ffff888041a19250 R14: dffffc0000000000 R15: ffff888013708d20 FS: 00007fa01829b700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdc3d4c000 CR3: 0000000015d56000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_do_stop+0xe4b/0x1ac0 net/mac80211/iface.c:610 ieee80211_stop+0xad/0x240 net/mac80211/iface.c:647 __dev_close_many+0x18e/0x2a0 net/core/dev.c:1695 __dev_close net/core/dev.c:1707 [inline] __dev_change_flags+0x24f/0x650 net/core/dev.c:8820 dev_change_flags+0x86/0x150 net/core/dev.c:8893 devinet_ioctl+0x102e/0x16c0 net/ipv4/devinet.c:1142 inet_ioctl+0x1ac/0x2a0 net/ipv4/af_inet.c:971 sock_do_ioctl+0xc6/0x210 net/socket.c:1094 sock_ioctl+0x3bf/0x570 net/socket.c:1221 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:1055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x465b09 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa01829b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020001000 RSI: 0000000000008914 RDI: 0000000000000003 RBP: 00000000004b069f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fff9b9e3e4f R14: 00007fa01829b300 R15: 0000000000022000