------------[ cut here ]------------ WARNING: CPU: 0 PID: 5486 at net/mac80211/tx.c:5040 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5040 [inline] WARNING: CPU: 0 PID: 5486 at net/mac80211/tx.c:5040 __ieee80211_beacon_get+0x120b/0x15d0 net/mac80211/tx.c:5469 Modules linked in: CPU: 0 UID: 0 PID: 5486 Comm: syz-executor114 Not tainted 6.14.0-rc5-syzkaller-00137-g00a7d39898c8 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5040 [inline] RIP: 0010:__ieee80211_beacon_get+0x120b/0x15d0 net/mac80211/tx.c:5469 Code: e8 aa 92 40 f6 eb 0d e8 a3 92 40 f6 4c 8b bc 24 98 00 00 00 4c 89 ef e8 13 49 9c f6 45 31 ed e9 4d fe ff ff e8 86 92 40 f6 90 <0f> 0b 90 e9 f9 f6 ff ff e8 78 92 40 f6 90 0f 0b 90 e9 e7 f8 ff ff RSP: 0018:ffffc900000079e0 EFLAGS: 00010246 RAX: ffffffff8b813c2a RBX: 0000000000000000 RCX: ffff8880003c0000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff8b81331f R09: ffffffff8b812d1f R10: 0000000000000003 R11: ffff8880003c0000 R12: ffff88804439e500 R13: ffff88803f8eec00 R14: ffff88804439e9d0 R15: ffff88804439cd80 FS: 000055556042b380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000040000002c000 CR3: 0000000043148000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0xb4/0x320 net/mac80211/tx.c:5596 ieee80211_beacon_get include/net/mac80211.h:5641 [inline] mac80211_hwsim_beacon_tx+0x39d/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2311 __iterate_interfaces+0x297/0x570 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:797 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345 __run_hrtimer kernel/time/hrtimer.c:1801 [inline] __hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1865 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1882 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:generic_exec_single+0x50a/0x980 kernel/smp.c:447 Code: e8 ab 15 0c 00 90 0f 0b 90 e9 6d fe ff ff e8 9d 15 0c 00 e8 28 d5 52 0a 4d 85 e4 0f 84 52 ff ff ff e8 8a 15 0c 00 fb 45 31 f6 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2f 00 00 00 00 66 43 c7 44 2f RSP: 0018:ffffc9000d0c7960 EFLAGS: 00000246 RAX: ffffffff81b5b926 RBX: 0000000000000000 RCX: ffff8880003c0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000d0c7a38 R08: ffffffff81b5b85c R09: 1ffffffff2079eae R10: dffffc0000000000 R11: fffffbfff2079eaf R12: 0000000000000200 R13: 1ffff92001a18f30 R14: 0000000000000000 R15: dffffc0000000000 smp_call_function_single_async+0x83/0x110 kernel/smp.c:724 rdmsr_safe_on_cpu+0x172/0x360 arch/x86/lib/msr-smp.c:179 msr_read+0x15d/0x260 arch/x86/kernel/msr.c:66 vfs_read+0x1f8/0xb40 fs/read_write.c:563 ksys_read+0x18f/0x2b0 fs/read_write.c:708 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f389029b4e9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffde029d0a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f389029b4e9 RDX: 0000000000018ff8 RSI: 0000400000019680 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 0072736d2f232f75 R09: 0000000000000000 R10: 000000000000000f R11: 0000000000000246 R12: 000000000001995a R13: 00007ffde029d120 R14: 00007ffde029d0dc R15: 00007ffde029d110 ---------------- Code disassembly (best guess): 0: e8 ab 15 0c 00 call 0xc15b0 5: 90 nop 6: 0f 0b ud2 8: 90 nop 9: e9 6d fe ff ff jmp 0xfffffe7b e: e8 9d 15 0c 00 call 0xc15b0 13: e8 28 d5 52 0a call 0xa52d540 18: 4d 85 e4 test %r12,%r12 1b: 0f 84 52 ff ff ff je 0xffffff73 21: e8 8a 15 0c 00 call 0xc15b0 26: fb sti 27: 45 31 f6 xor %r14d,%r14d * 2a: 48 c7 44 24 20 0e 36 movq $0x45e0360e,0x20(%rsp) <-- trapping instruction 31: e0 45 33: 4b c7 04 2f 00 00 00 movq $0x0,(%r15,%r13,1) 3a: 00 3b: 66 data16 3c: 43 rex.XB 3d: c7 .byte 0xc7 3e: 44 2f rex.R (bad)