------------[ cut here ]------------ wlan1: Failed check-sdata-in-driver check, flags: 0x0 WARNING: CPU: 2 PID: 23326 at net/mac80211/driver-ops.c:366 drv_unassign_vif_chanctx+0x247/0x850 net/mac80211/driver-ops.c:366 Modules linked in: CPU: 2 UID: 0 PID: 23326 Comm: syz.3.4208 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:drv_unassign_vif_chanctx+0x247/0x850 net/mac80211/driver-ops.c:366 Code: 74 24 10 48 81 c6 20 01 00 00 48 89 74 24 10 e8 ff 08 f2 f6 8b 54 24 04 48 8b 74 24 10 48 c7 c7 60 b0 e2 8c e8 5a 88 b0 f6 90 <0f> 0b 90 90 e8 e0 08 f2 f6 4c 89 f2 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffffc900042cf370 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88805e0f4d80 RCX: ffffc9000c001000 RDX: 0000000000080000 RSI: ffffffff817aee65 RDI: 0000000000000001 RBP: ffff8880697c0e80 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88805e0f6ae8 R13: 0000000000000000 R14: ffff88805e0f57b8 R15: ffff88805e0f6a90 FS: 0000000000000000(0000) GS:ffff888097a10000(0063) knlGS:00000000f549db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f549c50e CR3: 000000006a29d000 CR4: 0000000000352ef0 Call Trace: ieee80211_assign_link_chanctx+0x3f1/0xf00 net/mac80211/chan.c:905 __ieee80211_link_release_channel+0x273/0x4b0 net/mac80211/chan.c:1879 ieee80211_link_release_channel+0x128/0x200 net/mac80211/chan.c:2154 ieee80211_if_change_type+0x2b0/0x800 net/mac80211/iface.c:2007 ieee80211_change_iface+0xa5/0x500 net/mac80211/cfg.c:254 rdev_change_virtual_intf net/wireless/rdev-ops.h:74 [inline] cfg80211_change_iface+0x582/0xdc0 net/wireless/util.c:1238 nl80211_set_interface+0x911/0xcb0 net/wireless/nl80211.c:4632 genl_family_rcv_msg_doit+0x209/0x2f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] __sys_sendto+0x4a3/0x520 net/socket.c:2244 __do_compat_sys_socketcall net/compat.c:475 [inline] __se_compat_sys_socketcall net/compat.c:423 [inline] __ia32_compat_sys_socketcall+0x625/0x770 net/compat.c:423 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x7c/0x300 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf70ad579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f549c3d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000066 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00000000f549c3e4 RDX: 0000000000000000 RSI: 00000000f549c550 RDI: 00000000f7446ff4 RBP: 00000000f549c550 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi