------------[ cut here ]------------ no supported rates for sta (null) (0xffffffff, band 0) in rate_mask 0xfff with flags 0x20 WARNING: CPU: 0 PID: 6433 at net/mac80211/rate.c:376 __rate_control_send_low+0x574/0x770 net/mac80211/rate.c:371 Modules linked in: CPU: 0 PID: 6433 Comm: syz.7.414 Not tainted 5.15.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __rate_control_send_low+0x574/0x770 net/mac80211/rate.c:371 lr : __rate_control_send_low+0x574/0x770 net/mac80211/rate.c:371 sp : ffff800008007670 x29: ffff8000080076c0 x28: ffff0000d564b370 x27: 000000000000000c x26: dfff800000000000 x25: 0000000000000000 x24: dfff800000000000 x23: ffff0000e86b8028 x22: 0000000000000020 x21: 000000000000000c x20: ffff0000d564b378 x19: 0000000000000fff x18: 0000000000000101 x17: 0000000000000000 x16: ffff8000111d162c x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000100 x10: 0000000000000000 x9 : 743bc8cd3f86f400 x8 : 743bc8cd3f86f400 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800008006f58 x4 : ffff80001425f400 x3 : ffff8000085051a4 x2 : 0000000000000001 x1 : 0000000000000100 x0 : 0000000000000059 Call trace: __rate_control_send_low+0x574/0x770 net/mac80211/rate.c:371 rate_control_send_low+0x164/0x684 net/mac80211/rate.c:396 rate_control_get_rate+0x1a0/0x4b8 net/mac80211/rate.c:908 __ieee80211_beacon_get+0x1170/0x19dc net/mac80211/tx.c:5167 ieee80211_beacon_get_tim+0x5c/0x790 net/mac80211/tx.c:5194 ieee80211_beacon_get include/net/mac80211.h:4981 [inline] mac80211_hwsim_beacon_tx+0x10c/0x7ac drivers/net/wireless/mac80211_hwsim.c:1812 __iterate_interfaces+0x204/0x484 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0xd4/0x180 net/mac80211/util.c:829 mac80211_hwsim_beacon+0x90/0x174 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1690 [inline] __hrtimer_run_queues+0x428/0xb6c kernel/time/hrtimer.c:1754 hrtimer_run_softirq+0x160/0x400 kernel/time/hrtimer.c:1771 handle_softirqs+0x344/0xbf0 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] invoke_softirq kernel/softirq.c:457 [inline] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659 irq_exit+0x14/0x88 kernel/softirq.c:683 handle_domain_irq+0x14c/0x1fc kernel/irq/irqdesc.c:711 gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:765 call_on_irq_stack+0x24/0x30 arch/arm64/kernel/entry.S:855 do_interrupt_handler+0x6c/0x88 arch/arm64/kernel/entry-common.c:267 el0_interrupt+0x94/0x260 arch/arm64/kernel/entry-common.c:683 __el0_irq_handler_common+0x18/0x24 arch/arm64/kernel/entry-common.c:690 el0t_64_irq_handler+0x10/0x1c arch/arm64/kernel/entry-common.c:695 el0t_64_irq+0x1a0/0x1a4 arch/arm64/kernel/entry.S:585 irq event stamp: 3433 hardirqs last enabled at (3432): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (3433): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (3394): [] softirq_handle_end kernel/softirq.c:419 [inline] softirqs last enabled at (3394): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604 softirqs last disabled at (3397): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (3397): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (3397): [] invoke_softirq kernel/softirq.c:457 [inline] softirqs last disabled at (3397): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659 ---[ end trace 1cc9cd2a6116b1ff ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 14 at include/linux/backing-dev.h:289 inode_to_wb include/linux/backing-dev.h:285 [inline] WARNING: CPU: 0 PID: 14 at include/linux/backing-dev.h:289 test_clear_page_writeback+0x8d0/0xacc mm/page-writeback.c:2812 Modules linked in: CPU: 0 PID: 14 Comm: ksoftirqd/0 Tainted: G W 5.15.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 404000c5 (nZcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : inode_to_wb include/linux/backing-dev.h:285 [inline] pc : test_clear_page_writeback+0x8d0/0xacc mm/page-writeback.c:2812 lr : inode_to_wb include/linux/backing-dev.h:285 [inline] lr : test_clear_page_writeback+0x8d0/0xacc mm/page-writeback.c:2812 sp : ffff80001b3479a0 x29: ffff80001b3479b0 x28: ffff0000cb8ec000 x27: fffffc0003cf8788 x26: dfff800000000000 x25: 05ffc00000002012 x24: 0000000000000000 x23: ffff0000c05929e0 x22: 0000000000000001 x21: 0000000000000001 x20: ffff0000d8908c90 x19: fffffc0003485a80 x18: 0000000000000001 x17: 0000000000000000 x16: ffff8000082bf708 x15: 0000000000000002 x14: 0000000000ff0100 x13: 1ffff0000283006b x12: 0000000000ff0100 x11: 0000000000000101 x10: 0000000000000000 x9 : ffff8000086a13f8 x8 : ffff0000c0951b40 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000008 x3 : 0000000000000000 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: inode_to_wb include/linux/backing-dev.h:285 [inline] test_clear_page_writeback+0x8d0/0xacc mm/page-writeback.c:2812 end_page_writeback+0x174/0x488 mm/filemap.c:1603 end_buffer_async_write+0x340/0x56c fs/buffer.c:375 end_bio_bh_io_sync+0xb0/0x1b4 fs/buffer.c:3007 bio_endio+0x744/0x788 block/bio.c:1475 req_bio_endio block/blk-core.c:261 [inline] blk_update_request+0x7a4/0x1100 block/blk-core.c:1441 blk_mq_end_request+0x54/0x88 block/blk-mq.c:575 lo_complete_rq+0x1ec/0x250 drivers/block/loop.c:529 blk_complete_reqs block/blk-mq.c:587 [inline] blk_done_softirq+0x11c/0x168 block/blk-mq.c:592 handle_softirqs+0x344/0xbf0 kernel/softirq.c:576 run_ksoftirqd+0x7c/0x2a0 kernel/softirq.c:943 smpboot_thread_fn+0x4b0/0x920 kernel/smpboot.c:164 kthread+0x374/0x454 kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:855 irq event stamp: 709211 hardirqs last enabled at (709210): [] lock_page_memcg+0x110/0x234 mm/memcontrol.c:2059 hardirqs last disabled at (709211): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (709211): [] _raw_spin_lock_irqsave+0xfc/0x14c kernel/locking/spinlock.c:162 softirqs last enabled at (709200): [] softirq_handle_end kernel/softirq.c:419 [inline] softirqs last enabled at (709200): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604 softirqs last disabled at (709205): [] run_ksoftirqd+0x7c/0x2a0 kernel/softirq.c:943 ---[ end trace 1cc9cd2a6116b202 ]---