WARNING: CPU: 1 PID: 19264 at net/mac80211/offchannel.c:419 ieee80211_start_next_roc+0x1ed/0x240 net/mac80211/offchannel.c:419 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 19264 Comm: syz-executor.3 Not tainted 4.19.204-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:ieee80211_start_next_roc+0x1ed/0x240 net/mac80211/offchannel.c:419 Code: 98 16 00 00 48 89 ef 48 89 c2 e8 de e8 0a 00 5b 5d e9 17 49 c9 f9 e8 12 49 c9 f9 48 89 ef e8 7a 6c ff ff eb 94 e8 03 49 c9 f9 <0f> 0b eb 8b e8 3a 1b ff f9 e9 be fe ff ff 48 c7 c7 20 f1 45 8a e8 RSP: 0018:ffff888047e97318 EFLAGS: 00010206 RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9000c351000 RDX: 0000000000004740 RSI: ffffffff8799498d RDI: 0000000000000001 RBP: ffff8880432f9be0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8880432faac0 __ieee80211_scan_completed+0x571/0x1690 net/mac80211/scan.c:442 ieee80211_scan_cancel+0x340/0x940 net/mac80211/scan.c:1168 ieee80211_do_stop+0x18c6/0x1ff0 net/mac80211/iface.c:813 ieee80211_runtime_change_iftype net/mac80211/iface.c:1545 [inline] ieee80211_if_change_type+0x2b5/0x7a0 net/mac80211/iface.c:1581 ieee80211_change_iface+0x26/0x220 net/mac80211/cfg.c:157 rdev_change_virtual_intf net/wireless/rdev-ops.h:69 [inline] cfg80211_change_iface+0x2e1/0x1520 net/wireless/util.c:979 nl80211_set_interface+0x661/0x830 net/wireless/nl80211.c:3205 genl_family_rcv_msg+0x642/0xc40 net/netlink/genetlink.c:602 genl_rcv_msg+0xbf/0x160 net/netlink/genetlink.c:627 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2457 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1911 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2225 __sys_sendmsg net/socket.c:2263 [inline] __do_sys_sendmsg net/socket.c:2272 [inline] __se_sys_sendmsg net/socket.c:2270 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2270 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665e9 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:00007f8f74b35188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc76e8477f R14: 00007f8f74b35300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 00 00 add %al,(%rax) 2: 48 89 ef mov %rbp,%rdi 5: 48 89 c2 mov %rax,%rdx 8: e8 de e8 0a 00 callq 0xae8eb d: 5b pop %rbx e: 5d pop %rbp f: e9 17 49 c9 f9 jmpq 0xf9c9492b 14: e8 12 49 c9 f9 callq 0xf9c9492b 19: 48 89 ef mov %rbp,%rdi 1c: e8 7a 6c ff ff callq 0xffff6c9b 21: eb 94 jmp 0xffffffb7 23: e8 03 49 c9 f9 callq 0xf9c9492b 28: 0f 0b ud2 <-- trapping instruction 2a: eb 8b jmp 0xffffffb7 2c: e8 3a 1b ff f9 callq 0xf9ff1b6b 31: e9 be fe ff ff jmpq 0xfffffef4 36: 48 c7 c7 20 f1 45 8a mov $0xffffffff8a45f120,%rdi 3d: e8 .byte 0xe8