Hello, syzbot found the following issue on: HEAD commit: 171d4ff7 Merge tag 'mmc-v5.9-rc4-2' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15d1a809900000 kernel config: https://syzkaller.appspot.com/x/.config?x=240e2ebab67245c7 dashboard link: https://syzkaller.appspot.com/bug?extid=84f7d08012d5c1f0f59e compiler: gcc (GCC) 10.1.0-syz 20200507 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+84f7d08012d5c1f0f59e@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xdffffc0000000338: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x00000000000019c0-0x00000000000019c7] CPU: 1 PID: 27410 Comm: syz-executor.4 Not tainted 5.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x728/0x12d0 drivers/net/wireless/mac80211_hwsim.c:1408 Code: 89 b4 24 90 00 00 00 c6 84 24 98 00 00 00 00 74 bb e8 6c 5f 50 fc 48 8d bb c4 19 00 00 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 28 38 d0 7f 08 84 c0 0f 85 39 09 00 00 44 0f b6 bb c4 19 RSP: 0018:ffffc90000da8b68 EFLAGS: 00010202 RAX: 0000000000000338 RBX: 0000000000000000 RCX: ffffffff8525df4e RDX: 0000000000000004 RSI: ffffffff8525ded4 RDI: 00000000000019c4 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8d0c0a3f R10: 0000000000000000 R11: 0000000000000000 R12: ffff888047738500 R13: ffff888051ca3120 R14: ffff888051ca3350 R15: 0000000000000077 FS: 0000000000000000(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055783cad52c8 CR3: 000000005a64a000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> mac80211_hwsim_tx_frame+0x14f/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1654 mac80211_hwsim_beacon_tx+0x439/0x810 drivers/net/wireless/mac80211_hwsim.c:1694 __iterate_interfaces+0x124/0x4d0 net/mac80211/util.c:737 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:773 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1717 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x6a9/0xfc0 kernel/time/hrtimer.c:1588 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1605 __do_softirq+0x1f8/0xb23 kernel/softirq.c:298 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 </IRQ> __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x235/0x280 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:__raw_write_unlock_irq include/linux/rwlock_api_smp.h:268 [inline] RIP: 0010:_raw_write_unlock_irq+0x4b/0x80 kernel/locking/spinlock.c:343 Code: c0 b8 6b fc 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 31 48 83 3d 56 9f d3 01 00 74 25 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 6b 28 28 f9 65 8b 05 04 32 d9 77 85 c0 74 02 5d RSP: 0018:ffffc900074a7ae8 EFLAGS: 00000282 RAX: 1ffffffff13f8d77 RBX: ffff888037acc480 RCX: 1ffffffff16b2531 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff89e09080 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888048116340 R14: dffffc0000000000 R15: 00000000ffffffff release_task+0xc4e/0x14d0 kernel/exit.c:219 exit_notify kernel/exit.c:681 [inline] do_exit+0x14db/0x29f0 kernel/exit.c:826 do_group_exit+0x125/0x310 kernel/exit.c:903 get_signal+0x428/0x1f00 kernel/signal.c:2757 arch_do_signal+0x82/0x2520 arch/x86/kernel/signal.c:811 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0x1ae/0x200 kernel/entry/common.c:192 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:267 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e179 Code: Bad RIP value. RSP: 002b:00007f248bdfacf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000118cf48 RCX: 000000000045e179 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000118cf48 RBP: 000000000118cf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffec4bea0bf R14: 00007f248bdfb9c0 R15: 000000000118cf4c Modules linked in: ---[ end trace fba95d8d60d8e645 ]--- RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x728/0x12d0 drivers/net/wireless/mac80211_hwsim.c:1408 Code: 89 b4 24 90 00 00 00 c6 84 24 98 00 00 00 00 74 bb e8 6c 5f 50 fc 48 8d bb c4 19 00 00 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 28 38 d0 7f 08 84 c0 0f 85 39 09 00 00 44 0f b6 bb c4 19 RSP: 0018:ffffc90000da8b68 EFLAGS: 00010202 RAX: 0000000000000338 RBX: 0000000000000000 RCX: ffffffff8525df4e RDX: 0000000000000004 RSI: ffffffff8525ded4 RDI: 00000000000019c4 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8d0c0a3f R10: 0000000000000000 R11: 0000000000000000 R12: ffff888047738500 R13: ffff888051ca3120 R14: ffff888051ca3350 R15: 0000000000000077 FS: 0000000000000000(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055783cad52c8 CR3: 000000005a64a000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. 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