ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb ------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 0 PID: 0 at net/hsr/hsr_device.c:294 send_hsr_supervision_frame+0x608/0x810 net/hsr/hsr_device.c:294 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.5.0-rc5-syzkaller-00243-g9106536c1aa3 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:send_hsr_supervision_frame+0x608/0x810 net/hsr/hsr_device.c:294 Code: 04 31 ff 89 de e8 68 31 75 f7 84 db 0f 85 bd fe ff ff e8 2b 36 75 f7 48 c7 c7 e0 7d ad 8b c6 05 31 03 85 04 01 e8 58 f8 3b f7 <0f> 0b e9 9e fe ff ff e8 0c 36 75 f7 41 be 3c 00 00 00 ba 01 00 00 RSP: 0000:ffffc90000007bd8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffffffff8c6957c0 RSI: ffffffff814ccc86 RDI: 0000000000000001 RBP: ffffc90000007c40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 000000003a525348 R12: ffff888016b86c80 R13: 0000000000000000 R14: ffffffff8a10d490 R15: 0000000000000017 FS: 0000000000000000(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb8b0e80fa7 CR3: 00000000242bd000 CR4: 0000000000350ef0 Call Trace: hsr_announce+0x116/0x380 net/hsr/hsr_device.c:382 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x764/0xb10 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x218/0x965 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline] RIP: 0010:default_idle+0xf/0x20 arch/x86/kernel/process.c:731 Code: 89 07 49 c7 c0 08 00 00 00 4d 29 c8 4c 01 c7 4c 29 c2 e9 76 ff ff ff cc cc cc cc f3 0f 1e fa 66 90 0f 00 2d f3 7e 34 00 fb f4 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 65 RSP: 0000:ffffffff8c607e20 EFLAGS: 00000242 RAX: 00000000005873b5 RBX: 0000000000000000 RCX: ffffffff8a32089e RDX: 0000000000000000 RSI: ffffffff8a6c80a0 RDI: ffffffff8ac811a0 RBP: fffffbfff18d2af8 R08: 0000000000000001 R09: ffffed10058c6d9d R10: ffff88802c636ceb R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff8c6957c0 R14: ffffffff8eab9f50 R15: 0000000000000000 default_idle_call+0x67/0xa0 kernel/sched/idle.c:97 cpuidle_idle_call kernel/sched/idle.c:170 [inline] do_idle+0x32e/0x3f0 kernel/sched/idle.c:282 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379 rest_init+0x16f/0x2b0 init/main.c:726 arch_call_rest_init+0x13/0x30 init/main.c:823 start_kernel+0x39f/0x480 init/main.c:1068 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:556 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:537 secondary_startup_64_no_verify+0x167/0x16b ---------------- Code disassembly (best guess): 0: 89 07 mov %eax,(%rdi) 2: 49 c7 c0 08 00 00 00 mov $0x8,%r8 9: 4d 29 c8 sub %r9,%r8 c: 4c 01 c7 add %r8,%rdi f: 4c 29 c2 sub %r8,%rdx 12: e9 76 ff ff ff jmp 0xffffff8d 17: cc int3 18: cc int3 19: cc int3 1a: cc int3 1b: f3 0f 1e fa endbr64 1f: 66 90 xchg %ax,%ax 21: 0f 00 2d f3 7e 34 00 verw 0x347ef3(%rip) # 0x347f1b 28: fb sti 29: f4 hlt * 2a: fa cli <-- trapping instruction 2b: c3 ret 2c: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) 33: 00 00 00 00 37: 0f 1f 40 00 nopl 0x0(%rax) 3b: f3 0f 1e fa endbr64 3f: 65 gs