------------[ cut here ]------------ WARNING: CPU: 1 PID: 34 at net/mac80211/tx.c:5034 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5034 [inline] WARNING: CPU: 1 PID: 34 at net/mac80211/tx.c:5034 __ieee80211_beacon_get+0x1200/0x15c0 net/mac80211/tx.c:5461 Modules linked in: CPU: 1 PID: 34 Comm: kworker/u8:2 Not tainted 6.9.0-rc1-next-20240328-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5034 [inline] RIP: 0010:__ieee80211_beacon_get+0x1200/0x15c0 net/mac80211/tx.c:5461 Code: e8 05 86 9a f6 eb 0d e8 fe 85 9a f6 4c 8b bc 24 98 00 00 00 4c 89 ef e8 5e a8 f3 f6 45 31 ed e9 4e fe ff ff e8 e1 85 9a f6 90 <0f> 0b 90 e9 02 f7 ff ff e8 d3 85 9a f6 90 0f 0b 90 e9 ea f8 ff ff RSP: 0018:ffffc90000a08a00 EFLAGS: 00010246 RAX: ffffffff8afae4ef RBX: 0000000000000000 RCX: ffff88801c2c5a00 RDX: 0000000080000101 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff8afadbed R09: ffffffff8afad5f0 R10: 0000000000000003 R11: ffff88801c2c5a00 R12: ffff88807f8922d0 R13: ffff888022327000 R14: ffff88807f892750 R15: ffff88807f890ca0 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020404030 CR3: 000000000e134000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0xb4/0x320 net/mac80211/tx.c:5588 ieee80211_beacon_get include/net/mac80211.h:5557 [inline] mac80211_hwsim_beacon_tx+0x398/0x7e0 drivers/net/wireless/virtual/mac80211_hwsim.c:2302 __iterate_interfaces+0x223/0x4c0 net/mac80211/util.c:772 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2332 __run_hrtimer kernel/time/hrtimer.c:1692 [inline] __hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1756 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1773 __do_softirq+0x2c6/0x980 kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 fe b8 6f f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 63 c5 da f5 65 8b 05 04 66 79 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90000aa76a0 EFLAGS: 00000206 RAX: b9a2c9ef5d34c000 RBX: 1ffff92000154ed8 RCX: ffffffff8172570a RDX: dffffc0000000000 RSI: ffffffff8bcad5c0 RDI: 0000000000000001 RBP: ffffc90000aa7730 R08: ffffffff92f335ef R09: 1ffffffff25e66bd R10: dffffc0000000000 R11: fffffbfff25e66be R12: dffffc0000000000 R13: 1ffff92000154ed4 R14: ffffc90000aa76c0 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] __folio_end_writeback+0x67e/0xdc0 mm/page-writeback.c:3026 folio_end_writeback+0x1f7/0x6f0 mm/filemap.c:1632 ext4_finish_bio+0x7ef/0xdb0 fs/ext4/page-io.c:145 ext4_release_io_end+0xdf/0x2c0 fs/ext4/page-io.c:160 ext4_end_io_end fs/ext4/page-io.c:194 [inline] ext4_do_flush_completed_IO fs/ext4/page-io.c:259 [inline] ext4_end_io_rsv_work+0x5da/0x6f0 fs/ext4/page-io.c:273 process_one_work kernel/workqueue.c:3218 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3299 worker_thread+0x86d/0xd70 kernel/workqueue.c:3380 kthread+0x2f0/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 ---------------- Code disassembly (best guess): 0: 9c pushf 1: 8f 44 24 20 pop 0x20(%rsp) 5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) a: 74 08 je 0x14 c: 4c 89 f7 mov %r14,%rdi f: e8 fe b8 6f f6 call 0xf66fb912 14: f6 44 24 21 02 testb $0x2,0x21(%rsp) 19: 75 52 jne 0x6d 1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 63 c5 da f5 call 0xf5dac592 <-- trapping instruction 2f: 65 8b 05 04 66 79 74 mov %gs:0x74796604(%rip),%eax # 0x7479663a 36: 85 c0 test %eax,%eax 38: 74 43 je 0x7d 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: 04 24 add $0x24,%al 3e: 0e (bad) 3f: 36 ss