IPVS: ftp: loaded support on port[0] = 21 xt_limit: Overflow, try lower: 16777216/0 WARNING: CPU: 0 PID: 13577 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: 0 PID: 13577 Comm: syz-executor.3 Not tainted 4.19.203-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 59 c9 f9 e8 12 59 c9 f9 48 89 ef e8 7a 6c ff ff eb 94 e8 03 59 c9 f9 <0f> 0b eb 8b e8 5a 26 ff f9 e9 be fe ff ff 48 c7 c7 20 f1 45 8a e8 RSP: 0018:ffff88805d77f468 EFLAGS: 00010216 RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9000c491000 RDX: 0000000000003f8c RSI: ffffffff8799398d RDI: 0000000000000001 RBP: ffff88805e942460 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000001 R14: dffffc0000000000 R15: ffff88805e943340 __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_sendto+0x21a/0x320 net/socket.c:1897 __do_sys_sendto net/socket.c:1909 [inline] __se_sys_sendto net/socket.c:1905 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1905 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x41957c Code: fa fa ff ff 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 20 fb ff ff 48 8b RSP: 002b:00007f8fcae5ef80 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f8fcae5f0f0 RCX: 000000000041957c RDX: 0000000000000024 RSI: 00007f8fcae5f140 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007f8fcae5efd4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f8fcae5f140 R14: 0000000000000005 R15: 0000000000000000 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 59 c9 f9 jmpq 0xf9c9592b 14: e8 12 59 c9 f9 callq 0xf9c9592b 19: 48 89 ef mov %rbp,%rdi 1c: e8 7a 6c ff ff callq 0xffff6c9b 21: eb 94 jmp 0xffffffb7 23: e8 03 59 c9 f9 callq 0xf9c9592b 28: 0f 0b ud2 <-- trapping instruction 2a: eb 8b jmp 0xffffffb7 2c: e8 5a 26 ff f9 callq 0xf9ff268b 31: e9 be fe ff ff jmpq 0xfffffef4 36: 48 c7 c7 20 f1 45 8a mov $0xffffffff8a45f120,%rdi 3d: e8 .byte 0xe8