------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 3 PID: 9309 at net/hsr/hsr_device.c:299 send_hsr_supervision_frame+0x889/0xb40 net/hsr/hsr_device.c:299 Modules linked in: CPU: 3 PID: 9309 Comm: syz-executor.3 Not tainted 5.10.0-rc7-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 97 7f cd f8 84 db 0f 85 8b fd ff ff e8 7a 87 cd f8 48 c7 c7 c0 e5 6b 8a c6 05 d2 27 36 04 01 e8 23 06 0a 00 <0f> 0b e9 6c fd ff ff e8 5b 87 cd f8 41 be 42 00 00 00 ba 01 00 00 RSP: 0000:ffffc90000578c70 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880184b8000 RSI: ffffffff8158c835 RDI: fffff520000af180 RBP: 00000000000088fb R08: 0000000000000001 R09: ffffffff8ecc2747 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88806b9aa880 R13: 0000000000000000 R14: ffff88806c3dace8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802cf00000(0063) knlGS:00000000f551db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000000000054 CR3: 000000006e2c3000 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:1410 expire_timers kernel/time/timer.c:1455 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1747 __run_timers kernel/time/timer.c:1728 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1760 __do_softirq+0x2a0/0x9f6 kernel/softirq.c:298 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 do_softirq kernel/softirq.c:343 [inline] do_softirq+0xb5/0xe0 kernel/softirq.c:330 __local_bh_enable_ip+0xf0/0x110 kernel/softirq.c:195 local_bh_enable include/linux/bottom_half.h:32 [inline] fpregs_unlock arch/x86/include/asm/fpu/api.h:41 [inline] fpu__clear+0x102/0x270 arch/x86/kernel/fpu/core.c:384 handle_signal arch/x86/kernel/signal.c:762 [inline] arch_do_signal+0x1423/0x2390 arch/x86/kernel/signal.c:813 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0x100/0x1a0 kernel/entry/common.c:191 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:279 exc_page_fault+0xc6/0x180 arch/x86/mm/fault.c:1488 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:583 RIP: 0023:0x804b2a0 Code: 0c 02 00 00 01 cf 01 f8 8b 84 06 48 20 56 00 83 c4 08 5b 5e 5f 5d c3 31 ff eb da eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 90 <53> e8 da ed ff ff 81 c3 5a 2d 11 00 83 ec 08 8b 44 24 14 8b 40 0c RSP: 002b:00000000f551c4bc EFLAGS: 00000202 RAX: 000000000000000b RBX: 0000000000000000 RCX: 00000000f551c54c RDX: 00000000f551c4cc RSI: 000000000818afa0 RDI: 000000000815e000 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000