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Message-ID: <674d85ed.050a0220.48a03.0023.GAE@google.com> Date: Mon, 02 Dec 2024 02:03:25 -0800 From: syzbot <syzbot+7f4643b267cc680bfa1c@...kaller.appspotmail.com> To: davem@...emloft.net, edumazet@...gle.com, horms@...nel.org, kuba@...nel.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, pabeni@...hat.com, syzkaller-bugs@...glegroups.com Subject: [syzbot] [net?] kernel BUG in send_hsr_supervision_frame Hello, syzbot found the following issue on: HEAD commit: 43fb83c17ba2 Merge tag 'soc-arm-6.13' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1324a75f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=58b000b917043826 dashboard link: https://syzkaller.appspot.com/bug?extid=7f4643b267cc680bfa1c compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-43fb83c1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a5678208ca6c/vmlinux-43fb83c1.xz kernel image: https://storage.googleapis.com/syzbot-assets/e25541cc1d8e/bzImage-43fb83c1.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7f4643b267cc680bfa1c@...kaller.appspotmail.com skbuff: skb_over_panic: text:ffffffff8b01a76a len:34 put:6 head:ffff88806010f300 data:ffff88806010f422 tail:0x144 end:0x140 dev:gretap0 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:206! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 3 UID: 0 PID: 0 Comm: swapper/3 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:skb_panic+0x157/0x1d0 net/core/skbuff.c:206 Code: b6 04 01 84 c0 74 04 3c 03 7e 21 8b 4b 70 41 56 45 89 e8 48 c7 c7 20 06 9c 8c 41 57 56 48 89 ee 52 4c 89 e2 e8 8a 69 75 f8 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 24 c9 f7 f8 4c RSP: 0018:ffffc90000908ab0 EFLAGS: 00010286 RAX: 0000000000000087 RBX: ffff888035ec9400 RCX: ffffffff816d8479 RDX: 0000000000000000 RSI: ffffffff816e2e46 RDI: 0000000000000005 RBP: ffffffff8c9c1a40 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000302 R11: 0000000000000003 R12: ffffffff8b01a76a R13: 0000000000000006 R14: ffff88804c89a130 R15: 0000000000000140 FS: 0000000000000000(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f74751e7f98 CR3: 000000005b9f0000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> skb_over_panic net/core/skbuff.c:211 [inline] skb_put+0x174/0x1b0 net/core/skbuff.c:2617 send_hsr_supervision_frame+0x6fa/0x9e0 net/hsr/hsr_device.c:342 hsr_proxy_announce+0x1a3/0x4a0 net/hsr/hsr_device.c:436 call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers+0x6e8/0x930 kernel/time/timer.c:2418 __run_timer_base kernel/time/timer.c:2430 [inline] __run_timer_base kernel/time/timer.c:2422 [inline] run_timer_base+0x114/0x190 kernel/time/timer.c:2439 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2449 handle_softirqs+0x213/0x8f0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:655 irq_exit_rcu+0x9/0x30 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 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:92 [inline] RIP: 0010:default_idle+0xf/0x20 arch/x86/kernel/process.c:743 Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 83 69 3e 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffc900001a7e08 EFLAGS: 00000202 RAX: 00000000000d2b19 RBX: 0000000000000003 RCX: ffffffff8b282479 RDX: 0000000000000000 RSI: ffffffff8b6cda40 RDI: ffffffff8bd1e340 RBP: ffffed1003b5c488 R08: 0000000000000001 R09: ffffed100d52702d R10: ffff88806a93816b R11: 0000000000000000 R12: 0000000000000003 R13: ffff88801dae2440 R14: ffffffff90602ad0 R15: 0000000000000000 default_idle_call+0x6d/0xb0 kernel/sched/idle.c:117 cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x329/0x3f0 kernel/sched/idle.c:325 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:423 start_secondary+0x222/0x2b0 arch/x86/kernel/smpboot.c:314 common_startup_64+0x13e/0x148 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x157/0x1d0 net/core/skbuff.c:206 Code: b6 04 01 84 c0 74 04 3c 03 7e 21 8b 4b 70 41 56 45 89 e8 48 c7 c7 20 06 9c 8c 41 57 56 48 89 ee 52 4c 89 e2 e8 8a 69 75 f8 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 24 c9 f7 f8 4c RSP: 0018:ffffc90000908ab0 EFLAGS: 00010286 RAX: 0000000000000087 RBX: ffff888035ec9400 RCX: ffffffff816d8479 RDX: 0000000000000000 RSI: ffffffff816e2e46 RDI: 0000000000000005 RBP: ffffffff8c9c1a40 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000302 R11: 0000000000000003 R12: ffffffff8b01a76a R13: 0000000000000006 R14: ffff88804c89a130 R15: 0000000000000140 FS: 0000000000000000(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f74751e7f98 CR3: 000000005b9f0000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 01 c7 add %r8,%rdi 3: 4c 29 c2 sub %r8,%rdx 6: e9 72 ff ff ff jmp 0xffffff7d b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: f3 0f 1e fa endbr64 1f: eb 07 jmp 0x28 21: 0f 00 2d 83 69 3e 00 verw 0x3e6983(%rip) # 0x3e69ab 28: fb sti 29: f4 hlt * 2a: fa cli <-- trapping instruction 2b: c3 ret 2c: cc int3 2d: cc int3 2e: cc int3 2f: cc int3 30: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) 37: 00 00 00 00 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@...glegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
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