------------[ cut here ]------------ WARNING: CPU: 1 PID: 4483 at net/mac80211/tx.c:4934 __ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Modules linked in: CPU: 1 PID: 4483 Comm: syz-executor199 Not tainted 6.1.119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline] RIP: 0010:__ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Code: ff ff ff e8 86 71 51 f7 0f 0b 48 8b 7c 24 20 e8 aa 92 66 fe e9 6f e8 ff ff e8 70 71 51 f7 0f 0b e9 92 ed ff ff e8 64 71 51 f7 <0f> 0b e9 26 f1 ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c fc e8 RSP: 0018:ffffc900001e0820 EFLAGS: 00010246 RAX: ffffffff8a392a8c RBX: 0000000000000000 RCX: ffff888073323b80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900001e0a30 R08: ffffffff8a391bac R09: ffffffff8a3913b2 R10: 0000000000000003 R11: ffff888073323b80 R12: dffffc0000000000 R13: 1ffff9200003c11c R14: ffff88807ba8e258 R15: ffffffff8a391080 FS: 00007f02467966c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020180030 CR3: 000000007eddb000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0xb1/0x5d0 net/mac80211/tx.c:5342 ieee80211_beacon_get include/net/mac80211.h:5249 [inline] mac80211_hwsim_beacon_tx+0x1d2/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2086 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1770 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:rcu_is_watching+0x6c/0xb0 kernel/rcu/tree.c:723 Code: c3 a8 56 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 1e 8b 03 65 ff 0d 45 e7 8e 7e 74 0c 83 e0 04 c1 e8 02 5b <41> 5e 41 5f c3 e8 02 0b 8d ff eb ed 89 d9 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc900043f77a8 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff816aa1fb RDX: 0000000000000000 RSI: ffffffff8b5e61e0 RDI: ffffffff8b5e61a0 RBP: ffffc900043f7910 R08: dffffc0000000000 R09: fffffbfff1d35ef6 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200087ef00 R13: dffffc0000000000 R14: ffffffff8cda3878 R15: dffffc0000000000 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0xfa/0x5a0 kernel/locking/lockdep.c:5633 __might_fault+0xbd/0x110 mm/memory.c:5851 _copy_from_user+0x26/0x170 lib/usercopy.c:14 copy_from_user include/linux/uaccess.h:161 [inline] copy_msghdr_from_user+0xaa/0x670 net/socket.c:2449 recvmsg_copy_msghdr net/socket.c:2704 [inline] ___sys_recvmsg net/socket.c:2776 [inline] do_recvmmsg+0x408/0xad0 net/socket.c:2874 __sys_recvmmsg net/socket.c:2953 [inline] __do_sys_recvmmsg net/socket.c:2976 [inline] __se_sys_recvmmsg net/socket.c:2969 [inline] __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2969 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f02467f87a9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0246796228 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f0246882438 RCX: 00007f02467f87a9 RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f0246882430 R08: 0000000000000000 R09: 00007f02467966c0 R10: 0000000000000002 R11: 0000000000000246 R12: 00007f024688243c R13: 00007f024684f364 R14: 0031313230386c6e R15: 00007ffd594a4598 ---------------- Code disassembly (best guess): 0: c3 ret 1: a8 56 test $0x56,%al 3: 03 00 add (%rax),%eax 5: 49 03 1e add (%r14),%rbx 8: 48 89 d8 mov %rbx,%rax b: 48 c1 e8 03 shr $0x3,%rax f: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax 14: 84 c0 test %al,%al 16: 75 1e jne 0x36 18: 8b 03 mov (%rbx),%eax 1a: 65 ff 0d 45 e7 8e 7e decl %gs:0x7e8ee745(%rip) # 0x7e8ee766 21: 74 0c je 0x2f 23: 83 e0 04 and $0x4,%eax 26: c1 e8 02 shr $0x2,%eax 29: 5b pop %rbx * 2a: 41 5e pop %r14 <-- trapping instruction 2c: 41 5f pop %r15 2e: c3 ret 2f: e8 02 0b 8d ff call 0xff8d0b36 34: eb ed jmp 0x23 36: 89 d9 mov %ebx,%ecx 38: 80 e1 07 and $0x7,%cl 3b: 80 c1 03 add $0x3,%cl 3e: 38 c1 cmp %al,%cl