------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 1 PID: 9651 at net/hsr/hsr_device.c:299 send_hsr_supervision_frame+0x889/0xb40 net/hsr/hsr_device.c:299 Modules linked in: CPU: 1 PID: 9651 Comm: syz-executor.3 Not tainted 5.11.0-rc3-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:send_hsr_supervision_frame+0x889/0xb40 net/hsr/hsr_device.c:299 Code: 04 31 ff 89 de e8 e7 29 c5 f8 84 db 0f 85 8b fd ff ff e8 5a 23 c5 f8 48 c7 c7 c0 68 6d 8a c6 05 11 bc 41 04 01 e8 1b 08 0b 00 <0f> 0b e9 6c fd ff ff e8 3b 23 c5 f8 41 be 42 00 00 00 ba 01 00 00 RSP: 0000:ffffc900004e8c68 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888012a74600 RSI: ffffffff815b6b15 RDI: fffff5200009d17f RBP: 00000000000088fb R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff815afcee R11: 0000000000000000 R12: ffff888071b77700 R13: 0000000000000000 R14: ffff888078154ca8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802cb00000(0063) knlGS:00000000f5543b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000000000054 CR3: 00000000710e6000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x122/0x320 net/hsr/hsr_device.c:404 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1731 __run_timers kernel/time/timer.c:1712 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1744 __do_softirq+0x2bc/0xa29 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0010:rcu_lockdep_current_cpu_online+0x1f/0x150 kernel/rcu/tree.c:1153 Code: 00 66 2e 0f 1f 84 00 00 00 00 00 65 8b 15 b9 9c a2 7e 81 e2 00 00 f0 00 b8 01 00 00 00 75 0a 8b 15 5e 2b a4 0b 85 d2 75 01 c3 <55> 53 65 ff 05 98 9c a2 7e e8 53 38 9a 07 48 c7 c3 80 5a 03 00 83 RSP: 0000:ffffc90003b0f8c0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 1ffff92000761f1d RCX: ffffffff8158cce8 RDX: 0000000000000001 RSI: 0000000000000002 RDI: ffff88802cb35ba8 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8d037d8f R10: fffffbfff1a06fb1 R11: 0000000000000000 R12: 0000000000000001 R13: ffff8880268dc158 R14: 0000000000000000 R15: 0000000000000000 rcu_read_lock_held_common kernel/rcu/update.c:110 [inline] rcu_read_lock_held_common kernel/rcu/update.c:100 [inline] rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:121 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x5c9/0x740 kernel/locking/lockdep.c:5408 __might_fault mm/memory.c:5019 [inline] __might_fault+0x106/0x180 mm/memory.c:5004 __copy_to_user include/linux/uaccess.h:143 [inline] save_fsave_header+0x10f/0x260 arch/x86/kernel/fpu/signal.c:72 copy_fpstate_to_sigframe+0x869/0xae0 arch/x86/kernel/fpu/signal.c:205 get_sigframe.constprop.0+0x305/0x4a0 arch/x86/ia32/ia32_signal.c:223 ia32_setup_rt_frame+0x98/0xb90 arch/x86/ia32/ia32_signal.c:320 setup_rt_frame arch/x86/kernel/signal.c:696 [inline] handle_signal arch/x86/kernel/signal.c:746 [inline] arch_do_signal_or_restart+0xc84/0x1eb0 arch/x86/kernel/signal.c:813 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:201 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:315 exc_page_fault+0xc6/0x180 arch/x86/mm/fault.c:1509 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:580 RIP: 0023:0x804d916 Code: e8 ef 5f 01 00 83 c4 10 85 c0 0f 84 7d 01 00 00 65 f0 83 2d e4 ff ff ff 01 8b 5c 24 08 e8 a2 05 01 00 8b 00 8b 54 24 0c 85 c0 <89> 42 54 8b 72 50 0f 85 16 01 00 00 83 fe ff 0f 85 0d 01 00 00 8b RSP: 002b:00000000f5543100 EFLAGS: 00010202 RAX: 000000000000000e RBX: 0000000000000000 RCX: 00000000f55430f0 RDX: 0000000000000000 RSI: 00000000080dd582 RDI: 000000000815f000 RBP: 000000000818afcc R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000