------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 1 PID: 1 at net/hsr/hsr_device.c:299 send_hsr_supervision_frame+0x91c/0xb00 net/hsr/hsr_device.c:299 Modules linked in: CPU: 1 PID: 1 Comm: systemd Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:send_hsr_supervision_frame+0x91c/0xb00 net/hsr/hsr_device.c:299 Code: 4c 89 ef 48 89 74 24 08 e8 31 dd b4 f9 48 8b 74 24 08 e9 aa f7 ff ff 48 c7 c7 20 4f 9c 89 c6 05 c4 b8 32 04 01 e8 3e 1c 0a 00 <0f> 0b e9 c3 fd ff ff 0f 0b 48 8b 3c 24 48 89 74 24 08 e8 0d dd b4 RSP: 0000:ffffc90000db0c80 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88802d8e8bc0 RCX: 0000000000000000 RDX: 0000000000000102 RSI: ffffffff888afa60 RDI: fffff520001b6182 RBP: ffff88803f5b4000 R08: 0000000000000001 R09: ffffffff8e1618bf R10: fffffbfff1c2c317 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88802d8e8ca8 R14: ffffffff87ec55b0 R15: 0000000000000001 FS: 00007f2104ec9500(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2104b6d1f3 CR3: 0000000022f5d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0xf8/0x280 net/hsr/hsr_device.c:404 call_timer_fn+0x163/0x4b0 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x52a/0x8b0 kernel/time/timer.c:1731 __run_timers kernel/time/timer.c:1712 [inline] run_timer_softirq+0x9c/0x190 kernel/time/timer.c:1744 __do_softirq+0x29b/0x9f6 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:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0010:console_unlock+0x5bd/0x8d0 kernel/printk/printk.c:2580 Code: 57 fd ff ff 48 c7 c6 57 4a 53 81 48 c7 c7 c0 a0 67 8a e8 86 eb fd ff e8 e1 2f 00 00 48 83 3c 24 00 0f 85 a6 01 00 00 41 56 9d <8b> 54 24 38 85 d2 0f 84 98 fb ff ff 31 d2 be 15 0a 00 00 48 c7 c7 RSP: 0000:ffffc90000c674c8 EFLAGS: 00000247 RAX: 00000000003dab7b RBX: dffffc0000000000 RCX: ffffffff8150b75e RDX: 0000000000000000 RSI: ffffffff888afa60 RDI: ffffffff88ddc700 RBP: ffffc90000c67528 R08: 0000000000000001 R09: ffffffff8e1617e7 R10: fffffbfff1c2c2fc R11: 6b7361745f637072 R12: 0000000000000000 R13: ffffffff8b364830 R14: 0000000000000247 R15: 0000000000000000 vprintk_emit+0xf8/0x2d0 kernel/printk/printk.c:2092 printk+0xad/0xde kernel/printk/printk.c:2140 dump_unreclaimable_slab.cold+0xc6/0xcb mm/slab_common.c:1007 dump_header+0x20b/0x52f mm/oom_kill.c:469 oom_kill_process.cold+0xb/0x10 mm/oom_kill.c:980 out_of_memory mm/oom_kill.c:1117 [inline] out_of_memory+0x2af/0x1060 mm/oom_kill.c:1049 __alloc_pages_may_oom mm/page_alloc.c:4110 [inline] __alloc_pages_slowpath.constprop.0+0x1c3e/0x2240 mm/page_alloc.c:4848 __alloc_pages_nodemask+0x5f0/0x730 mm/page_alloc.c:5014 pagecache_get_page+0x1fc/0xce0 mm/filemap.c:1841 filemap_fault+0x1389/0x2380 mm/filemap.c:2827 ext4_filemap_fault+0x82/0xb0 fs/ext4/inode.c:6205 __do_fault+0xed/0x390 mm/memory.c:3625 do_read_fault mm/memory.c:4019 [inline] do_fault mm/memory.c:4147 [inline] handle_pte_fault mm/memory.c:4387 [inline] __handle_mm_fault mm/memory.c:4522 [inline] handle_mm_fault+0x245f/0x4520 mm/memory.c:4620 do_user_addr_fault+0x2d3/0x930 arch/x86/mm/fault.c:1393 handle_page_fault arch/x86/mm/fault.c:1450 [inline] exc_page_fault+0x60/0xc0 arch/x86/mm/fault.c:1506 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:580 RIP: 0033:0x7f2104b6d21d Code: Unable to access opcode bytes at RIP 0x7f2104b6d1f3. RSP: 002b:00007ffc242dbac0 EFLAGS: 00010207 RAX: 0000000000000001 RBX: 0000557fc38c1f50 RCX: 00007f21034a0303 RDX: 0000000000000001 RSI: 00007ffc242dbac0 RDI: 0000000000000000 RBP: 00007ffc242dbda0 R08: e8e25f4f0f7fe2ab R09: 00000000000000f0 R10: 00000000ffffffff R11: 0000000000000000 R12: 00007ffc242dbac0 R13: 0000000000000001 R14: ffffffffffffffff R15: 0000000000000002 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: 48 c7 c6 57 4a 53 81 mov $0xffffffff81534a57,%rsi 7: 48 c7 c7 c0 a0 67 8a mov $0xffffffff8a67a0c0,%rdi e: e8 86 eb fd ff callq 0xfffdeb99 13: e8 e1 2f 00 00 callq 0x2ff9 18: 48 83 3c 24 00 cmpq $0x0,(%rsp) 1d: 0f 85 a6 01 00 00 jne 0x1c9 23: 41 56 push %r14 25: 9d popfq * 26: 8b 54 24 38 mov 0x38(%rsp),%edx <-- trapping instruction 2a: 85 d2 test %edx,%edx 2c: 0f 84 98 fb ff ff je 0xfffffbca 32: 31 d2 xor %edx,%edx 34: be 15 0a 00 00 mov $0xa15,%esi 39: 48 rex.W 3a: c7 .byte 0xc7 3b: c7 .byte 0xc7