ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb ------------[ cut here ]------------ HSR: Could not send supervision frame WARNING: CPU: 0 PID: 11967 at net/hsr/hsr_device.c:294 send_hsr_supervision_frame+0x5fe/0x840 net/hsr/hsr_device.c:294 Modules linked in: CPU: 0 PID: 11967 Comm: kworker/u4:20 Not tainted 6.4.0-rc1-syzkaller-00347-gb50a8b0d57ab #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 Workqueue: bat_events batadv_tt_purge RIP: 0010:send_hsr_supervision_frame+0x5fe/0x840 net/hsr/hsr_device.c:294 Code: 04 31 ff 89 de e8 32 c3 95 f7 84 db 0f 85 01 ff ff ff e8 45 c7 95 f7 48 c7 c7 a0 d6 89 8b c6 05 1e 60 76 04 01 e8 b2 84 5d f7 <0f> 0b e9 e2 fe ff ff e8 26 c7 95 f7 41 be 3c 00 00 00 ba 01 00 00 RSP: 0000:ffffc90000007c70 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff88801ed55940 RSI: ffffffff814c03e7 RDI: 0000000000000001 RBP: ffffc90000007cd0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000002e99c8 R12: ffff88807a7c1300 R13: 0000000000000000 R14: 0000000000000017 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004335c0 CR3: 000000002ae00000 CR4: 00000000003506f0 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:__local_bh_enable_ip+0xac/0x130 kernel/softirq.c:403 Code: 1d 21 eb b5 7e 65 8b 05 1a eb b5 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 e1 58 0a 00 e8 8c 10 3d 00 fb 65 8b 05 fc ea b5 7e <85> c0 74 58 5b 5d c3 65 8b 05 c2 b5 b4 7e 85 c0 75 a2 0f 0b eb 9e RSP: 0000:ffffc9000627fc90 EFLAGS: 00000206 RAX: 0000000080000000 RBX: 00000000fffffe00 RCX: 1ffffffff22b02ee RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffffff89dd84a7 R08: 0000000000000001 R09: ffffffff91529def R10: 0000000000000001 R11: 0000000000000000 R12: ffffc9000627fdb0 R13: dffffc0000000000 R14: ffff888028b33200 R15: 00000000000003e6 spin_unlock_bh include/linux/spinlock.h:395 [inline] batadv_tt_global_purge net/batman-adv/translation-table.c:2300 [inline] batadv_tt_purge+0x3a7/0xaf0 net/batman-adv/translation-table.c:3562 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 ---------------- Code disassembly (best guess): 0: 1d 21 eb b5 7e sbb $0x7eb5eb21,%eax 5: 65 8b 05 1a eb b5 7e mov %gs:0x7eb5eb1a(%rip),%eax # 0x7eb5eb26 c: a9 00 ff ff 00 test $0xffff00,%eax 11: 74 45 je 0x58 13: bf 01 00 00 00 mov $0x1,%edi 18: e8 e1 58 0a 00 callq 0xa58fe 1d: e8 8c 10 3d 00 callq 0x3d10ae 22: fb sti 23: 65 8b 05 fc ea b5 7e mov %gs:0x7eb5eafc(%rip),%eax # 0x7eb5eb26 * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 74 58 je 0x86 2e: 5b pop %rbx 2f: 5d pop %rbp 30: c3 retq 31: 65 8b 05 c2 b5 b4 7e mov %gs:0x7eb4b5c2(%rip),%eax # 0x7eb4b5fa 38: 85 c0 test %eax,%eax 3a: 75 a2 jne 0xffffffde 3c: 0f 0b ud2 3e: eb 9e jmp 0xffffffde