------------[ cut here ]------------ WARNING: CPU: 0 PID: 7587 at net/mac80211/rx.c:5336 ieee80211_rx_list+0x1f35/0x2a90 net/mac80211/rx.c:5336 Modules linked in: CPU: 0 UID: 0 PID: 7587 Comm: syz.5.374 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:ieee80211_rx_list+0x1f35/0x2a90 net/mac80211/rx.c:5336 Code: 90 e9 e2 e4 ff ff e8 aa 48 ca f6 e9 d8 e4 ff ff e8 a0 48 ca f6 e9 ce e4 ff ff e8 96 48 ca f6 e9 c4 e4 ff ff e8 8c 48 ca f6 90 <0f> 0b 90 e9 b6 e4 ff ff e8 7e 48 ca f6 48 c7 44 24 40 00 00 00 00 RSP: 0018:ffffc90000007a00 EFLAGS: 00010246 RAX: ffffffff8af565b4 RBX: ffff888032c0b0c8 RCX: ffff88802b16bc00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffffc90000007c10 R08: 0000000000000000 R09: ffffffff8af571ea R10: 0000000000000002 R11: 0000000000000100 R12: dffffc0000000000 R13: ffff888075ea03c0 R14: ffff888032c095d5 R15: ffffffff8af571ea FS: 0000000000000000(0000) GS:ffff888125c18000(0063) knlGS:00000000f549db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000801a8018 CR3: 0000000030bd8000 CR4: 00000000003526f0 Call Trace: ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5446 ieee80211_rx include/net/mac80211.h:5210 [inline] ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:453 tasklet_action_common+0x36c/0x580 kernel/softirq.c:829 handle_softirqs+0x283/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5872 Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 8b 21 03 11 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc9000b0e7808 EFLAGS: 00000206 RAX: da921c5715e6b300 RBX: 0000000000000000 RCX: da921c5715e6b300 RDX: 0000000000000000 RSI: ffffffff8dba7f2b RDI: ffffffff8be33880 RBP: ffffffff820b8000 R08: 0000000000000000 R09: ffffffff820b8000 R10: ffffc9000b0e7960 R11: fffff5200161cf2f R12: 0000000000000001 R13: ffff88807e5f6d60 R14: 0000000000000001 R15: 0000000000000246 __might_fault+0xcc/0x130 mm/memory.c:6958 _inline_copy_from_user include/linux/uaccess.h:162 [inline] _copy_from_user+0x28/0xb0 lib/usercopy.c:18 copy_from_user include/linux/uaccess.h:212 [inline] get_compat_msghdr+0xad/0x4a0 net/compat.c:91 recvmsg_copy_msghdr net/socket.c:2798 [inline] ___sys_recvmsg+0x17f/0x510 net/socket.c:2872 do_recvmmsg+0x36a/0x770 net/socket.c:2963 __sys_recvmmsg+0x19d/0x280 net/socket.c:3045 __do_compat_sys_recvmmsg_time32 net/compat.c:418 [inline] __se_compat_sys_recvmmsg_time32 net/compat.c:414 [inline] __ia32_compat_sys_recvmmsg_time32+0xbf/0xe0 net/compat.c:414 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xb6/0x2b0 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf70ce539 Code: 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 00 00 00 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 90 90 RSP: 002b:00000000f549d55c EFLAGS: 00000206 ORIG_RAX: 0000000000000151 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000800000c0 RDX: 0000000000010106 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: 9c pushf 5: 8f 44 24 30 pop 0x30(%rsp) 9: f7 44 24 30 00 02 00 testl $0x200,0x30(%rsp) 10: 00 11: 0f 85 cd 00 00 00 jne 0xe4 17: f7 44 24 08 00 02 00 testl $0x200,0x8(%rsp) 1e: 00 1f: 74 01 je 0x22 21: fb sti 22: 65 48 8b 05 8b 21 03 mov %gs:0x1103218b(%rip),%rax # 0x110321b5 29: 11 * 2a: 48 3b 44 24 58 cmp 0x58(%rsp),%rax <-- trapping instruction 2f: 0f 85 f2 00 00 00 jne 0x127 35: 48 83 c4 60 add $0x60,%rsp 39: 5b pop %rbx 3a: 41 5c pop %r12 3c: 41 5d pop %r13 3e: 41 5e pop %r14