general protection fault in hsr_dev_change

Kernel	Title	Repro	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	general protection fault in hsr_dev_change_mtu (2)	C	error	2	821d	1404d	0/1	upstream: reported C repro on 2021/01/19 13:13
linux-4.14	general protection fault in hsr_dev_change_mtu			8	1537d	1758d	0/1	auto-closed as invalid on 2021/01/06 06:37
linux-4.19	general protection fault in hsr_dev_change_mtu (2)	C	error	9	1143d	1435d	0/1	upstream: reported C repro on 2020/12/19 00:10

ldm_validate_partition_table(): Disk read failed. Dev loop0: unable to read RDB block 0 loop0: unable to read partition table kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 13635 Comm: syz-executor.4 Not tainted 4.19.136-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hsr_dev_change_mtu+0xa2/0xd0 net/hsr/hsr_device.c:149 Code: 89 e0 5b 5d 41 5c 41 5d c3 e8 4a 90 6c fa eb e1 e8 a3 70 36 fa 49 8d 7d 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 1d 49 8b 7d 10 ba 06 00 00 00 48 c7 c6 00 7f 49 88 RSP: 0018:ffff88820c0c6b60 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 00000000000005dc RCX: ffffc9000e316000 RDX: 0000000000000002 RSI: ffffffff87333e9d RDI: 0000000000000010 RBP: ffff888054d46300 R08: 0000000000000000 R09: 00000000000005d6 R10: 0000000000000004 R11: 0000000000000000 R12: 00000000000005d6 R13: 0000000000000000 R14: ffff888054d46538 R15: 0000000000000001 FS: 00007f8cdf8ca700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056252f06e458 CR3: 0000000212acc000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __dev_set_mtu net/core/dev.c:7754 [inline] dev_set_mtu_ext+0x339/0x580 net/core/dev.c:7807 dev_set_mtu+0x95/0x120 net/core/dev.c:7831 team_port_add drivers/net/team/team.c:1205 [inline] team_add_slave+0x905/0x1eb0 drivers/net/team/team.c:1976 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2321 do_setlink+0x7ec/0x3540 net/core/rtnetlink.c:2455 rtnl_newlink+0xda0/0x15b0 net/core/rtnetlink.c:3077 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45cc79 Code: 2d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f8cdf8c9c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002c080 RCX: 000000000045cc79 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c R13: 00007ffdbb225eaf R14: 00007f8cdf8ca9c0 R15: 000000000078bf0c Modules linked in: ---[ end trace 2c8b0e96b148aace ]--- RIP: 0010:hsr_dev_change_mtu+0xa2/0xd0 net/hsr/hsr_device.c:149 Code: 89 e0 5b 5d 41 5c 41 5d c3 e8 4a 90 6c fa eb e1 e8 a3 70 36 fa 49 8d 7d 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 1d 49 8b 7d 10 ba 06 00 00 00 48 c7 c6 00 7f 49 88 RSP: 0018:ffff88820c0c6b60 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 00000000000005dc RCX: ffffc9000e316000 RDX: 0000000000000002 RSI: ffffffff87333e9d RDI: 0000000000000010 RBP: ffff888054d46300 R08: 0000000000000000 R09: 00000000000005d6 R10: 0000000000000004 R11: 0000000000000000 R12: 00000000000005d6 R13: 0000000000000000 R14: ffff888054d46538 R15: 0000000000000001 FS: 00007f8cdf8ca700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fece8755de0 CR3: 0000000212acc000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400