On Thu, 07 Oct 2021 14:04:22 +0200, Corentin Noël <corentin.noel@xxxxxxxxxxxxx> wrote:
> I've been experiencing crashes with 5.14-rc1 and above that do not
> occur with 5.13,
I should have fixed this problem before. I don't know why, I just looked at the
latest net code, and this commit seems to be lost.
1a8024239dacf53fcf39c0f07fbf2712af22864f virtio-net: fix for skb_over_panic inside big mode
Can you test this patch again?
Thanks.
>
> here is the crash trace:
>
> [ 61.346677] skbuff: skb_over_panic: text:ffffffff881ae2c7 len:3762
> put:3762 head:ffff8a5ec8c22000 data:ffff8a5ec8c22010 tail:0xec2
> end:0xec0 dev:<NULL>
> [ 61.369192] kernel BUG at net/core/skbuff.c:111!
> [ 61.372840] invalid opcode: 0000 [#1] SMP PTI
> [ 61.374892] CPU: 5 PID: 0 Comm: swapper/5 Not tainted 5.14.0-
> rc1linux-v5.14-rc1-for-mesa-ci.tar.bz2 #1
> [ 61.376450] Hardware name: ChromiumOS crosvm, BIOS 0
> [ 61.377222] RIP: 0010:skb_panic+0x43/0x45
> [ 61.377833] Code: 4f 70 50 8b 87 bc 00 00 00 50 8b 87 b8 00 00 00 50
> ff b7 c8 00 00 00 4c 8b 8f c0 00 00 00 48 c7 c7 18 f1 cf 88 e8 6a 43 fb
> ff <0f> 0b 48 8b 14 24 48 c7 c1 20 35 b1 88 e8 ab ff ff ff 48 c7 c6 60
> [ 61.380566] RSP: 0018:ffffae258017cce0 EFLAGS: 00010246
> [ 61.381267] RAX: 000000000000008b RBX: 0000000000000010 RCX:
> 00000000ffffdfff
> [ 61.382246] RDX: 0000000000000000 RSI: 00000000ffffffea RDI:
> 0000000000000000
> [ 61.383376] RBP: ffffde6a80230880 R08: ffffffff88f45568 R09:
> 0000000000009ffb
> [ 61.384494] R10: 00000000ffffe000 R11: 3fffffffffffffff R12:
> ffff8a5ec7461200
> [ 61.385696] R13: ffff8a5ec8c22000 R14: 0000000000000000 R15:
> 0000000000000eb2
> [ 61.386825] FS: 0000000000000000(0000) GS:ffff8a5febd40000(0000)
> knlGS:0000000000000000
> [ 61.388055] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 61.389221] CR2: 000000000148a060 CR3: 000000011ae0e005 CR4:
> 0000000000370ee0
> [ 61.390871] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [ 61.392335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
> 0000000000000400
> [ 61.393635] Call Trace:
> [ 61.394127] <IRQ>
> [ 61.394488] skb_put.cold+0x10/0x10
> [ 61.395095] page_to_skb+0xf7/0x410
> [ 61.395689] receive_buf+0x81/0x1660
> [ 61.396228] ? netif_receive_skb_list_internal+0x1ad/0x2b0
> [ 61.397180] ? napi_gro_flush+0x97/0xe0
> [ 61.397896] ? detach_buf_split+0x67/0x120
> [ 61.398573] virtnet_poll+0x2cf/0x420
> [ 61.399197] __napi_poll+0x25/0x150
> [ 61.399764] net_rx_action+0x22f/0x280
> [ 61.400394] __do_softirq+0xba/0x257
> [ 61.401012] irq_exit_rcu+0x8e/0xb0
> [ 61.401618] common_interrupt+0x7b/0xa0
> [ 61.402270] </IRQ>
> [ 61.402620] asm_common_interrupt+0x1e/0x40
> [ 61.403302] RIP: 0010:default_idle+0xb/0x10
> [ 61.404018] Code: 8b 04 25 00 6d 01 00 f0 80 60 02 df c3 0f ae f0 0f
> ae 38 0f ae f0 eb b9 0f 1f 80 00 00 00 00 eb 07 0f 00 2d df 3e 44 00 fb
> f4 <c3> cc cc cc cc 65 8b 15 31 2f a4 77 89 d2 48 8b 05 d0 a1 0c 01 48
> [ 61.407636] RSP: 0018:ffffae258008fef8 EFLAGS: 00000202
> [ 61.408394] RAX: ffffffff885ce620 RBX: 0000000000000005 RCX:
> ffff8a5febd56f80
> [ 61.409451] RDX: 0000000000c1ec32 RSI: 7ffffff1b7a1e726 RDI:
> ffff8a5febd5dd00
> [ 61.410530] RBP: ffff8a5fc01f8000 R08: 0000000000c1ec32 R09:
> 0000000000000000
> [ 61.411715] R10: 0000000000000006 R11: 0000000000000002 R12:
> 0000000000000000
> [ 61.412984] R13: 0000000000000000 R14: 0000000000000000 R15:
> 0000000000000000
> [ 61.414183] ? mwait_idle+0x70/0x70
> [ 61.414805] ? mwait_idle+0x70/0x70
> [ 61.415592] default_idle_call+0x2a/0xa0
> [ 61.416216] do_idle+0x1e8/0x250
> [ 61.416722] cpu_startup_entry+0x14/0x20
> [ 61.417347] secondary_startup_64_no_verify+0xc2/0xcb
> [ 61.418144] Modules linked in:
> [ 61.418622] ---[ end trace 3741c3e580a52bbd ]---
> [ 61.419399] RIP: 0010:skb_panic+0x43/0x45
> [ 61.420054] Code: 4f 70 50 8b 87 bc 00 00 00 50 8b 87 b8 00 00 00 50
> ff b7 c8 00 00 00 4c 8b 8f c0 00 00 00 48 c7 c7 18 f1 cf 88 e8 6a 43 fb
> ff <0f> 0b 48 8b 14 24 48 c7 c1 20 35 b1 88 e8 ab ff ff ff 48 c7 c6 60
> [ 61.422606] RSP: 0018:ffffae258017cce0 EFLAGS: 00010246
> [ 61.423865] RAX: 000000000000008b RBX: 0000000000000010 RCX:
> 00000000ffffdfff
> [ 61.425031] RDX: 0000000000000000 RSI: 00000000ffffffea RDI:
> 0000000000000000
> [ 61.426229] RBP: ffffde6a80230880 R08: ffffffff88f45568 R09:
> 0000000000009ffb
> [ 61.427439] R10: 00000000ffffe000 R11: 3fffffffffffffff R12:
> ffff8a5ec7461200
> [ 61.428615] R13: ffff8a5ec8c22000 R14: 0000000000000000 R15:
> 0000000000000eb2
> [ 61.429799] FS: 0000000000000000(0000) GS:ffff8a5febd40000(0000)
> knlGS:0000000000000000
> [ 61.431048] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 61.431997] CR2: 000000000148a060 CR3: 000000011ae0e005 CR4:
> 0000000000370ee0
> [ 61.433206] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [ 61.434502] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
> 0000000000000400
> [ 61.435799] Kernel panic - not syncing: Fatal exception in interrupt
> [ 61.439250] Kernel Offset: 0x6a00000 from 0xffffffff81000000
> (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
>
> Here is my kernel config:
> https://gitlab.freedesktop.org/tintou/mesa/-/raw/7cf2be0e1c53d1040ff8a973ddeeeb3d93250f8e/.gitlab-ci/container/x86_64.config
>
>
> here is the decoded trace:
>
> [ 61.346677] skbuff: skb_over_panic: text:ffffffff881ae2c7 len:3762
> put:3762 head:ffff8a5ec8c22000 data:ffff8a5ec8c22010 tail:0xec2
> end:0xec0 dev:<NULL>
> [ 61.369192] kernel BUG at net/core/skbuff.c:111!
> [ 61.372840] invalid opcode: 0000 [#1] SMP PTI
> [ 61.374892] CPU: 5 PID: 0 Comm: swapper/5 Not tainted 5.14.0-
> rc1linux-v5.14-rc1-for-mesa-ci.tar.bz2 #1
> [ 61.376450] Hardware name: ChromiumOS crosvm, BIOS 0
> [ 61.377222] RIP: skb_panic+0x43/0x45
> [ 61.377833] Code: 4f 70 50 8b 87 bc 00 00 00 50 8b 87 b8 00 00 00 50
> ff b7 c8 00 00 00 4c 8b 8f c0 00 00 00 48 c7 c7 18 f1 cf 88 e8 6a 43 fb
> ff <0f> 0b 48 8b 14 24 48 c7 c1 20 35 b1 88 e8 ab ff ff ff 48 c7 c6 60
> All code
> ========
> 0: 4f 70 50 rex.WRXB jo 0x53
> 3: 8b 87 bc 00 00 00 mov 0xbc(%rdi),%eax
> 9: 50 push %rax
> a: 8b 87 b8 00 00 00 mov 0xb8(%rdi),%eax
> 10: 50 push %rax
> 11: ff b7 c8 00 00 00 pushq 0xc8(%rdi)
> 17: 4c 8b 8f c0 00 00 00 mov 0xc0(%rdi),%r9
> 1e: 48 c7 c7 18 f1 cf 88 mov $0xffffffff88cff118,%rdi
> 25: e8 6a 43 fb ff callq 0xfffffffffffb4394
> 2a:* 0f 0b ud2 <-- trapping
> instruction
> 2c: 48 8b 14 24 mov (%rsp),%rdx
> 30: 48 c7 c1 20 35 b1 88 mov $0xffffffff88b13520,%rcx
> 37: e8 ab ff ff ff callq 0xffffffffffffffe7
> 3c: 48 rex.W
> 3d: c7 .byte 0xc7
> 3e: c6 (bad)
> 3f: 60 (bad)
>
> Code starting with the faulting instruction
> ===========================================
> 0: 0f 0b ud2
> 2: 48 8b 14 24 mov (%rsp),%rdx
> 6: 48 c7 c1 20 35 b1 88 mov $0xffffffff88b13520,%rcx
> d: e8 ab ff ff ff callq 0xffffffffffffffbd
> 12: 48 rex.W
> 13: c7 .byte 0xc7
> 14: c6 (bad)
> 15: 60 (bad)
> [ 61.380566] RSP: 0018:ffffae258017cce0 EFLAGS: 00010246
> [ 61.381267] RAX: 000000000000008b RBX: 0000000000000010 RCX:
> 00000000ffffdfff
> [ 61.382246] RDX: 0000000000000000 RSI: 00000000ffffffea RDI:
> 0000000000000000
> [ 61.383376] RBP: ffffde6a80230880 R08: ffffffff88f45568 R09:
> 0000000000009ffb
> [ 61.384494] R10: 00000000ffffe000 R11: 3fffffffffffffff R12:
> ffff8a5ec7461200
> [ 61.385696] R13: ffff8a5ec8c22000 R14: 0000000000000000 R15:
> 0000000000000eb2
> [ 61.386825] FS: 0000000000000000(0000) GS:ffff8a5febd40000(0000)
> knlGS:0000000000000000
> [ 61.388055] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 61.389221] CR2: 000000000148a060 CR3: 000000011ae0e005 CR4:
> 0000000000370ee0
> [ 61.390871] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [ 61.392335] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
> 0000000000000400
> [ 61.393635] Call Trace:
> [ 61.394127] <IRQ>
> [ 61.394488] skb_put.cold+0x10/0x10
> [ 61.395095] page_to_skb+0xf7/0x410
> [ 61.395689] receive_buf+0x81/0x1660
> [ 61.396228] ? netif_receive_skb_list_internal+0x1ad/0x2b0
> [ 61.397180] ? napi_gro_flush+0x97/0xe0
> [ 61.397896] ? detach_buf_split+0x67/0x120
> [ 61.398573] virtnet_poll+0x2cf/0x420
> [ 61.399197] __napi_poll+0x25/0x150
> [ 61.399764] net_rx_action+0x22f/0x280
> [ 61.400394] __do_softirq+0xba/0x257
> [ 61.401012] irq_exit_rcu+0x8e/0xb0
> [ 61.401618] common_interrupt+0x7b/0xa0
> [ 61.402270] </IRQ>
> [ 61.402620] asm_common_interrupt+0x1e/0x40
> [ 61.403302] RIP: default_idle+0xb/0x10
> [ 61.404018] Code: 8b 04 25 00 6d 01 00 f0 80 60 02 df c3 0f ae f0 0f
> ae 38 0f ae f0 eb b9 0f 1f 80 00 00 00 00 eb 07 0f 00 2d df 3e 44 00 fb
> f4 <c3> cc cc cc cc 65 8b 15 31 2f a4 77 89 d2 48 8b 05 d0 a1 0c 01 48
> All code
> ========
> 0: 8b 04 25 00 6d 01 00 mov 0x16d00,%eax
> 7: f0 80 60 02 df lock andb $0xdf,0x2(%rax)
> c: c3 retq
> d: 0f ae f0 mfence
> 10: 0f ae 38 clflush (%rax)
> 13: 0f ae f0 mfence
> 16: eb b9 jmp 0xffffffffffffffd1
> 18: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
> 1f: eb 07 jmp 0x28
> 21: 0f 00 2d df 3e 44 00 verw 0x443edf(%rip) # 0x443f07
> 28: fb sti
> 29: f4 hlt
> 2a:* c3 retq <-- trapping
> instruction
> 2b: cc int3
> 2c: cc int3
> 2d: cc int3
> 2e: cc int3
> 2f: 65 8b 15 31 2f a4 77 mov %gs:0x77a42f31(%rip),%edx
> # 0x77a42f67
> 36: 89 d2 mov %edx,%edx
> 38: 48 8b 05 d0 a1 0c 01 mov 0x10ca1d0(%rip),%rax #
> 0x10ca20f
> 3f: 48 rex.W
>
> Code starting with the faulting instruction
> ===========================================
> 0: c3 retq
> 1: cc int3
> 2: cc int3
> 3: cc int3
> 4: cc int3
> 5: 65 8b 15 31 2f a4 77 mov %gs:0x77a42f31(%rip),%edx
> # 0x77a42f3d
> c: 89 d2 mov %edx,%edx
> e: 48 8b 05 d0 a1 0c 01 mov 0x10ca1d0(%rip),%rax #
> 0x10ca1e5
> 15: 48 rex.W
> [ 61.407636] RSP: 0018:ffffae258008fef8 EFLAGS: 00000202
> [ 61.408394] RAX: ffffffff885ce620 RBX: 0000000000000005 RCX:
> ffff8a5febd56f80
> [ 61.409451] RDX: 0000000000c1ec32 RSI: 7ffffff1b7a1e726 RDI:
> ffff8a5febd5dd00
> [ 61.410530] RBP: ffff8a5fc01f8000 R08: 0000000000c1ec32 R09:
> 0000000000000000
> [ 61.411715] R10: 0000000000000006 R11: 0000000000000002 R12:
> 0000000000000000
> [ 61.412984] R13: 0000000000000000 R14: 0000000000000000 R15:
> 0000000000000000
> [ 61.414183] ? mwait_idle+0x70/0x70
> [ 61.414805] ? mwait_idle+0x70/0x70
> [ 61.415592] default_idle_call+0x2a/0xa0
> [ 61.416216] do_idle+0x1e8/0x250
> [ 61.416722] cpu_startup_entry+0x14/0x20
> [ 61.417347] secondary_startup_64_no_verify+0xc2/0xcb
> [ 61.418144] Modules linked in:
> [ 61.418622] ---[ end trace 3741c3e580a52bbd ]---
> [ 61.419399] RIP: skb_panic+0x43/0x45
> [ 61.420054] Code: 4f 70 50 8b 87 bc 00 00 00 50 8b 87 b8 00 00 00 50
> ff b7 c8 00 00 00 4c 8b 8f c0 00 00 00 48 c7 c7 18 f1 cf 88 e8 6a 43 fb
> ff <0f> 0b 48 8b 14 24 48 c7 c1 20 35 b1 88 e8 ab ff ff ff 48 c7 c6 60
> All code
> ========
> 0: 4f 70 50 rex.WRXB jo 0x53
> 3: 8b 87 bc 00 00 00 mov 0xbc(%rdi),%eax
> 9: 50 push %rax
> a: 8b 87 b8 00 00 00 mov 0xb8(%rdi),%eax
> 10: 50 push %rax
> 11: ff b7 c8 00 00 00 pushq 0xc8(%rdi)
> 17: 4c 8b 8f c0 00 00 00 mov 0xc0(%rdi),%r9
> 1e: 48 c7 c7 18 f1 cf 88 mov $0xffffffff88cff118,%rdi
> 25: e8 6a 43 fb ff callq 0xfffffffffffb4394
> 2a:* 0f 0b ud2 <-- trapping
> instruction
> 2c: 48 8b 14 24 mov (%rsp),%rdx
> 30: 48 c7 c1 20 35 b1 88 mov $0xffffffff88b13520,%rcx
> 37: e8 ab ff ff ff callq 0xffffffffffffffe7
> 3c: 48 rex.W
> 3d: c7 .byte 0xc7
> 3e: c6 (bad)
> 3f: 60 (bad)
>
> Code starting with the faulting instruction
> ===========================================
> 0: 0f 0b ud2
> 2: 48 8b 14 24 mov (%rsp),%rdx
> 6: 48 c7 c1 20 35 b1 88 mov $0xffffffff88b13520,%rcx
> d: e8 ab ff ff ff callq 0xffffffffffffffbd
> 12: 48 rex.W
> 13: c7 .byte 0xc7
> 14: c6 (bad)
> 15: 60 (bad)
> [ 61.422606] RSP: 0018:ffffae258017cce0 EFLAGS: 00010246
> [ 61.423865] RAX: 000000000000008b RBX: 0000000000000010 RCX:
> 00000000ffffdfff
> [ 61.425031] RDX: 0000000000000000 RSI: 00000000ffffffea RDI:
> 0000000000000000
> [ 61.426229] RBP: ffffde6a80230880 R08: ffffffff88f45568 R09:
> 0000000000009ffb
> [ 61.427439] R10: 00000000ffffe000 R11: 3fffffffffffffff R12:
> ffff8a5ec7461200
> [ 61.428615] R13: ffff8a5ec8c22000 R14: 0000000000000000 R15:
> 0000000000000eb2
> [ 61.429799] FS: 0000000000000000(0000) GS:ffff8a5febd40000(0000)
> knlGS:0000000000000000
>
> Regards,
> Corentin
>
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