HSR: Could not send supervision frame WARNING: CPU: 2 PID: 113 at net/hsr/hsr_device.c:294 send_hsr_supervision_frame+0x5fe/0x840 net/hsr/hsr_device.c:294 Modules linked in: CPU: 2 PID: 113 Comm: kswapd1 Not tainted 6.4.0-rc1-syzkaller-00109-gcc3c44c9fda2 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:send_hsr_supervision_frame+0x5fe/0x840 net/hsr/hsr_device.c:294 Code: 04 31 ff 89 de e8 42 f4 95 f7 84 db 0f 85 01 ff ff ff e8 55 f8 95 f7 48 c7 c7 20 d2 89 8b c6 05 e5 73 76 04 01 e8 c2 b5 5d f7 <0f> 0b e9 e2 fe ff ff e8 36 f8 95 f7 41 be 3c 00 00 00 ba 01 00 00 RSP: 0000:ffffc90000588c70 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff8880169c0000 RSI: ffffffff814c03e7 RDI: 0000000000000001 RBP: ffffc90000588cd0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888078404900 R13: 0000000000000000 R14: 0000000000000017 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1ff05d2ad5 CR3: 000000001fef6000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x10d/0x370 net/hsr/hsr_device.c:382 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751 __run_timers kernel/time/timer.c:2022 [inline] __run_timers kernel/time/timer.c:1995 [inline] run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035 __do_softirq+0x1d4/0x905 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:super_cache_count+0x1b5/0x2e0 fs/super.c:149 Code: e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ce 00 00 00 41 8b 75 04 4c 89 fa 48 89 ef 4c 01 e3 49 c7 c4 fe ff ff ff e8 bb cb d8 ff <31> ff 48 01 c3 48 89 de e8 2e b1 9d ff 48 85 db 74 7e e8 e4 b4 9d RSP: 0000:ffffc90001fc7798 EFLAGS: 00000282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90001fc76f8 RDX: 1ffff11002d38157 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88805f750860 R08: 0000000000000001 R09: ffffffff8e7a7297 R10: fffffbfff1cf4e52 R11: 0000000000000000 R12: fffffffffffffffe R13: ffffc90001fc7900 R14: ffffc90001fc7904 R15: ffff888013686000 do_shrink_slab+0x7e/0xaa0 mm/vmscan.c:858 shrink_slab+0x1c8/0x8a0 mm/vmscan.c:1074 shrink_one+0x4f9/0x710 mm/vmscan.c:5379 shrink_many mm/vmscan.c:5429 [inline] lru_gen_shrink_node mm/vmscan.c:5546 [inline] shrink_node+0x1fd5/0x3500 mm/vmscan.c:6487 kswapd_shrink_node mm/vmscan.c:7287 [inline] balance_pgdat+0xa02/0x1ac0 mm/vmscan.c:7477 kswapd+0x677/0xd60 mm/vmscan.c:7737 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 ---------------- Code disassembly (best guess): 0: e0 07 loopne 0x9 2: 83 c0 03 add $0x3,%eax 5: 38 d0 cmp %dl,%al 7: 7c 08 jl 0x11 9: 84 d2 test %dl,%dl b: 0f 85 ce 00 00 00 jne 0xdf 11: 41 8b 75 04 mov 0x4(%r13),%esi 15: 4c 89 fa mov %r15,%rdx 18: 48 89 ef mov %rbp,%rdi 1b: 4c 01 e3 add %r12,%rbx 1e: 49 c7 c4 fe ff ff ff mov $0xfffffffffffffffe,%r12 25: e8 bb cb d8 ff callq 0xffd8cbe5 * 2a: 31 ff xor %edi,%edi <-- trapping instruction 2c: 48 01 c3 add %rax,%rbx 2f: 48 89 de mov %rbx,%rsi 32: e8 2e b1 9d ff callq 0xff9db165 37: 48 85 db test %rbx,%rbx 3a: 74 7e je 0xba 3c: e8 .byte 0xe8 3d: e4 b4 in $0xb4,%al 3f: 9d popfq