------------[ cut here ]------------ hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw) WARNING: drivers/net/wireless/virtual/mac80211_hwsim_main.c:2248 at mac80211_hwsim_tx+0x1ab4/0x2500 drivers/net/wireless/virtual/mac80211_hwsim_main.c:2248, CPU#0: syz.4.13995/20856 Modules linked in: CPU: 0 UID: 0 PID: 20856 Comm: syz.4.13995 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:mac80211_hwsim_tx+0x1ab4/0x2500 drivers/net/wireless/virtual/mac80211_hwsim_main.c:2248 Code: c6 05 c7 5b 13 09 01 48 c7 c7 20 87 9b 8c be 6b 08 00 00 48 c7 c2 60 88 9b 8c e8 a7 dc 74 fa e9 ff ee ff ff e8 ed df 98 fa 90 <0f> 0b 90 49 bc 00 00 00 00 00 fc ff df e9 dd fe ff ff e8 d5 df 98 RSP: 0018:ffffc9001c6fefc0 EFLAGS: 00010287 RAX: ffffffff872d9173 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc900107e9000 RSI: 000000000000022a RDI: 000000000000022b RBP: ffffc9001c6ff150 R08: ffff88802603be00 R09: 000000000000000e R10: 000000000000000d R11: 0000000000000002 R12: 0000000000000014 R13: ffff888078a78df0 R14: 0000000000000028 R15: 0000000000000030 FS: 0000000000000000(0000) GS:ffff888124f56000(0063) knlGS:00000000f546db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002e612ff8 CR3: 0000000084b9c000 CR4: 00000000003526f0 DR0: 0000000040000005 DR1: 0000000100000000 DR2: 0000000000000898 DR3: 0000000000000006 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: drv_tx net/mac80211/driver-ops.h:38 [inline] ieee80211_tx_frags+0x3df/0x890 net/mac80211/tx.c:1746 __ieee80211_tx+0x267/0x580 net/mac80211/tx.c:1801 ieee80211_tx+0x312/0x4b0 net/mac80211/tx.c:1984 ieee80211_monitor_start_xmit+0xb33/0x1280 net/mac80211/tx.c:2479 __netdev_start_xmit include/linux/netdevice.h:5400 [inline] netdev_start_xmit include/linux/netdevice.h:5409 [inline] xmit_one net/core/dev.c:3889 [inline] dev_hard_start_xmit+0x2cd/0x830 net/core/dev.c:3905 __dev_queue_xmit+0x1435/0x37f0 net/core/dev.c:4872 packet_snd net/packet/af_packet.c:3082 [inline] packet_sendmsg+0x3d95/0x5040 net/packet/af_packet.c:3114 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __ia32_sys_sendto+0xdd/0x100 net/socket.c:2255 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x23e/0x6f0 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x33/0x70 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf707f0ec Code: 90 85 d2 74 0a 89 ce 81 e6 ff 0f 00 00 89 32 85 c0 74 05 c1 e9 0c 89 08 31 c0 5e 5d c3 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 58 b8 RSP: 002b:00000000f546d50c EFLAGS: 00000206 ORIG_RAX: 0000000000000171 RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000080000080 RDX: 0000000000000039 RSI: 0000000004000000 RDI: 0000000080000380 RBP: 0000000000000014 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 90 nop 1: 85 d2 test %edx,%edx 3: 74 0a je 0xf 5: 89 ce mov %ecx,%esi 7: 81 e6 ff 0f 00 00 and $0xfff,%esi d: 89 32 mov %esi,(%rdx) f: 85 c0 test %eax,%eax 11: 74 05 je 0x18 13: c1 e9 0c shr $0xc,%ecx 16: 89 08 mov %ecx,(%rax) 18: 31 c0 xor %eax,%eax 1a: 5e pop %rsi 1b: 5d pop %rbp 1c: c3 ret 1d: 90 nop 1e: 0f 1f 00 nopl (%rax) 21: 51 push %rcx 22: 52 push %rdx 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 58 pop %rax 3f: b8 .byte 0xb8