Messages in this thread | | | Date | Mon, 3 Aug 2020 16:48:40 -0500 | From | Josh Poimboeuf <> | Subject | Re: BUG: stack guard page was hit in arch_stack_walk |
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Hi Cong,
This looks similar to the stack overflow which was attempted to be fixed by dd912306ff00 ("net: fix a potential recursive NETDEV_FEAT_CHANGE").
And another syzbot report here:
https://lkml.kernel.org/r/000000000000cb6afe05ab34e77e@google.com
On Sat, Aug 01, 2020 at 11:09:21AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 92ed3019 Linux 5.8-rc7 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=12c98f28900000 > kernel config: https://syzkaller.appspot.com/x/.config?x=84f076779e989e69 > dashboard link: https://syzkaller.appspot.com/bug?extid=c05e6eff86f7a430fa73 > compiler: gcc (GCC) 10.1.0-syz 20200507 > > Unfortunately, I don't have any reproducer for this issue yet. > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+c05e6eff86f7a430fa73@syzkaller.appspotmail.com > > BUG: stack guard page was hit at 000000009157a0b1 (stack is 000000007cb00dab..0000000055f9d23d) > kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN > CPU: 0 PID: 13871 Comm: syz-executor.4 Not tainted 5.8.0-rc7-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > RIP: 0010:arch_stack_walk+0x0/0xf0 arch/x86/kernel/stacktrace.c:17 > Code: 8b eb c0 e6 82 89 fa ee ee 8d 57 01 ee ee eb cd e6 81 eb f1 e6 87 eb ed e6 83 eb e9 cc cc cc cc cc cc cc cc cc cc cc cc cc cc <55> 48 89 e5 41 56 49 89 d6 41 55 49 89 cd 41 54 49 89 f4 53 48 89 > RSP: 0018:ffffc90008b18000 EFLAGS: 00010246 > RAX: 0000000000000000 RBX: fffff52001163001 RCX: 0000000000000000 > RDX: ffff88802b30e480 RSI: ffffc90008b18028 RDI: ffffffff8162c090 > RBP: 0000000000000cc0 R08: ffffed1006f83078 R09: ffffed1006f83094 > R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000cc0 > R13: 0000000000000000 R14: ffff88821b77f8c0 R15: 00000000000000e0 > FS: 00007f7369ba8700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffc90008b17ff8 CR3: 00000000a21ec000 CR4: 00000000001426f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123 > save_stack+0x1b/0x40 mm/kasan/common.c:48 > set_track mm/kasan/common.c:56 [inline] > __kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:494 > slab_post_alloc_hook mm/slab.h:586 [inline] > slab_alloc_node mm/slab.c:3263 [inline] > kmem_cache_alloc_node+0x130/0x3c0 mm/slab.c:3575 > __alloc_skb+0x71/0x550 net/core/skbuff.c:198 > alloc_skb include/linux/skbuff.h:1083 [inline] > nlmsg_new include/net/netlink.h:940 [inline] > rtmsg_ifinfo_build_skb+0x72/0x1a0 net/core/rtnetlink.c:3702 > rtmsg_ifinfo_event net/core/rtnetlink.c:3738 [inline] > rtmsg_ifinfo_event net/core/rtnetlink.c:3729 [inline] > rtnetlink_event+0x123/0x1d0 net/core/rtnetlink.c:5512 > notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 > call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] > call_netdevice_notifiers net/core/dev.c:2053 [inline] > netdev_features_change net/core/dev.c:1443 [inline] > netdev_sync_lower_features net/core/dev.c:9056 [inline] > __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 > netdev_change_features+0x61/0xb0 net/core/dev.c:9259 > bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 > call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] > call_netdevice_notifiers net/core/dev.c:2053 [inline] > netdev_features_change net/core/dev.c:1443 [inline] > netdev_sync_lower_features net/core/dev.c:9056 [inline] > __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 > netdev_change_features+0x61/0xb0 net/core/dev.c:9259 > bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 > call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] > call_netdevice_notifiers net/core/dev.c:2053 [inline] > netdev_features_change net/core/dev.c:1443 [inline] > netdev_sync_lower_features net/core/dev.c:9056 [inline] > __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 > netdev_change_features+0x61/0xb0 net/core/dev.c:9259 > bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 > call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] > call_netdevice_notifiers net/core/dev.c:2053 [inline] > netdev_features_change net/core/dev.c:1443 [inline] > netdev_sync_lower_features net/core/dev.c:9056 [inline] > __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 > netdev_change_features+0x61/0xb0 net/core/dev.c:9259 > bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 > call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] > call_netdevice_notifiers net/core/dev.c:2053 [inline] > netdev_features_change net/core/dev.c:1443 [inline] > netdev_sync_lower_features net/core/dev.c:9056 [inline] > __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 > netdev_change_features+0x61/0xb0 net/core/dev.c:9259 > bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 > call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] > call_netdevice_notifiers net/core/dev.c:2053 [inline] > netdev_features_change net/core/dev.c:1443 [inline] > netdev_sync_lower_features net/core/dev.c:9056 [inline] > __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 > netdev_change_features+0x61/0xb0 net/core/dev.c:9259 > bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 > call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] > call_netdevice_notifiers net/core/dev.c:2053 [inline] > netdev_features_change net/core/dev.c:1443 [inline] > netdev_sync_lower_features net/core/dev.c:9056 [inline] > __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 > netdev_change_features+0x61/0xb0 net/core/dev.c:9259 > bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 > bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline] > bond_netdev_event+0x81f/0xb30 drivers/net/bonding/bond_main.c:3277 > notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 > call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2027 > call_netdevice_notifiers_extack net/core/dev.c:2039 [inline] > call_netdevice_notifiers net/core/dev.c:2053 [inline] > netdev_features_change net/core/dev.c:1443 [inline] > netdev_sync_lower_features net/core/dev.c:9056 [inline] > __netdev_update_features+0x88d/0x1360 net/core/dev.c:9187 > netdev_change_features+0x61/0xb0 net/core/dev.c:9259 > bond_compute_features+0x502/0xa00 drivers/net/bonding/bond_main.c:1188 > Lost 536 message(s)! > ---[ end trace 00f7ed0d29de9cad ]--- > RIP: 0010:arch_stack_walk+0x0/0xf0 arch/x86/kernel/stacktrace.c:17 > Code: 8b eb c0 e6 82 89 fa ee ee 8d 57 01 ee ee eb cd e6 81 eb f1 e6 87 eb ed e6 83 eb e9 cc cc cc cc cc cc cc cc cc cc cc cc cc cc <55> 48 89 e5 41 56 49 89 d6 41 55 49 89 cd 41 54 49 89 f4 53 48 89 > RSP: 0018:ffffc90008b18000 EFLAGS: 00010246 > RAX: 0000000000000000 RBX: fffff52001163001 RCX: 0000000000000000 > RDX: ffff88802b30e480 RSI: ffffc90008b18028 RDI: ffffffff8162c090 > RBP: 0000000000000cc0 R08: ffffed1006f83078 R09: ffffed1006f83094 > R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000cc0 > R13: 0000000000000000 R14: ffff88821b77f8c0 R15: 00000000000000e0 > FS: 00007f7369ba8700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffc90008b17ff8 CR3: 00000000a21ec000 CR4: 00000000001426f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > > --- > 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@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. >
-- Josh
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