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SubjectBUG: stack guard page was hit in deref_stack_reg
From
Hello,

syzbot found the following crash on:

HEAD commit: 34a568a2 net: sgi: ioc3-eth: Remove phy workaround
git tree: net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=103e69fde00000
kernel config: https://syzkaller.appspot.com/x/.config?x=598678fc6e800071
dashboard link: https://syzkaller.appspot.com/bug?extid=2a3c14db0e17fe4c7409
compiler: gcc (GCC) 9.0.0 20181231 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+2a3c14db0e17fe4c7409@syzkaller.appspotmail.com

BUG: stack guard page was hit at 0000000085925c81 (stack is 00000000386230c4..00000000d4e5808f)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5148 Comm: syz-executor.5 Not tainted 5.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:deref_stack_reg+0x22/0xe0 arch/x86/kernel/unwind_orc.c:347
Code: 0f 1f 84 00 00 00 00 00 41 55 49 bd 00 00 00 00 00 fc ff df 41 54 49 89 d4 ba 08 00 00 00 55 48 89 f5 53 48 83 ec 60 48 89 e3 <48> c7 04 24 b3 8a b5 41 48 c7 44 24 08 e0 4c 24 89 48 c1 eb 03 48
RSP: 0018:ffffc900179d7fe0 EFLAGS: 00010282
RAX: ffffc900179d81f8 RBX: ffffc900179d7fe0 RCX: 0000000000000000
RDX: 0000000000000008 RSI: ffffc900179d81f0 RDI: ffffc900179d81f8
RBP: ffffc900179d81f0 R08: ffffffff8acbe0f4 R09: ffffffff8acbe0f8
R10: 000000000000c44c R11: 000000000006e027 R12: ffffc900179d8240
R13: dffffc0000000000 R14: ffffc900179d8248 R15: ffffc900179d81f8
FS: 00007f2c8b150700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc900179d7fd8 CR3: 0000000059456000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_next_frame+0xbfa/0x19d0 arch/x86/kernel/unwind_orc.c:499
__unwind_start arch/x86/kernel/unwind_orc.c:655 [inline]
__unwind_start+0x474/0x820 arch/x86/kernel/unwind_orc.c:585
unwind_start arch/x86/include/asm/unwind.h:60 [inline]
arch_stack_walk+0x57/0xd0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123
save_stack+0x1b/0x80 mm/kasan/common.c:72
set_track mm/kasan/common.c:80 [inline]
__kasan_kmalloc mm/kasan/common.c:515 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:488
slab_post_alloc_hook mm/slab.h:584 [inline]
slab_alloc_node mm/slab.c:3263 [inline]
kmem_cache_alloc_node_trace+0x14b/0x790 mm/slab.c:3593
__do_kmalloc_node mm/slab.c:3615 [inline]
__kmalloc_node_track_caller+0x38/0x60 mm/slab.c:3630
__kmalloc_reserve.isra.0+0x39/0xe0 net/core/skbuff.c:142
pskb_expand_head+0x148/0x1020 net/core/skbuff.c:1627
netlink_trim+0x1ea/0x240 net/netlink/af_netlink.c:1285
netlink_broadcast_filtered+0x5f/0xd40 net/netlink/af_netlink.c:1490
netlink_broadcast net/netlink/af_netlink.c:1535 [inline]
nlmsg_multicast include/net/netlink.h:968 [inline]
nlmsg_notify+0x90/0x250 net/netlink/af_netlink.c:2521
rtnl_notify net/core/rtnetlink.c:737 [inline]
rtmsg_ifinfo_send net/core/rtnetlink.c:3705 [inline]
rtmsg_ifinfo_event.part.0+0xb6/0xe0 net/core/rtnetlink.c:3720
rtmsg_ifinfo_event net/core/rtnetlink.c:5498 [inline]
rtnetlink_event+0x11e/0x150 net/core/rtnetlink.c:5491
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3237 [inline]
bond_netdev_event+0x6ee/0x930 drivers/net/bonding/bond_main.c:3277
notifier_call_chain+0xc0/0x230 kernel/notifier.c:83
call_netdevice_notifiers_info net/core/dev.c:1948 [inline]
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933
call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
call_netdevice_notifiers net/core/dev.c:1974 [inline]
netdev_features_change net/core/dev.c:1364 [inline]
netdev_update_features net/core/dev.c:9082 [inline]
netdev_update_features+0xc4/0xd0 net/core/dev.c:9079
netdev_sync_lower_features net/core/dev.c:8891 [inline]
__netdev_update_features+0x821/0x12f0 net/core/dev.c:9026
netdev_change_features+0x61/0xb0 net/core/dev.c:9098
bond_compute_features.isra.0+0x521/0xa40 drivers/net/bonding/bond_main.c:1188
bond_enslave+0x3418/0x4800 drivers/net/bonding/bond_main.c:1818
do_set_master net/core/rtnetlink.c:2468 [inline]
do_set_master+0x1d7/0x230 net/core/rtnetlink.c:2441
do_setlink+0xaa2/0x35e0 net/core/rtnetlink.c:2603
__rtnl_newlink+0xad5/0x1590 net/core/rtnetlink.c:3252
rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3377
rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5440
netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2478
netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329
netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x6b9/0x7d0 net/socket.c:2343
___sys_sendmsg+0x100/0x170 net/socket.c:2397
__sys_sendmsg+0xec/0x1b0 net/socket.c:2430
do_syscall_64+0xf6/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c4a9
Code: ad 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f2c8b14fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f2c8b1506d4 RCX: 000000000045c4a9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 000000000076bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000009f9 R14: 00000000004cc766 R15: 000000000076bfcc
Modules linked in:
---[ end trace f67e5717e1c84195 ]---
RIP: 0010:deref_stack_reg+0x22/0xe0 arch/x86/kernel/unwind_orc.c:347
Code: 0f 1f 84 00 00 00 00 00 41 55 49 bd 00 00 00 00 00 fc ff df 41 54 49 89 d4 ba 08 00 00 00 55 48 89 f5 53 48 83 ec 60 48 89 e3 <48> c7 04 24 b3 8a b5 41 48 c7 44 24 08 e0 4c 24 89 48 c1 eb 03 48
RSP: 0018:ffffc900179d7fe0 EFLAGS: 00010282
RAX: ffffc900179d81f8 RBX: ffffc900179d7fe0 RCX: 0000000000000000
RDX: 0000000000000008 RSI: ffffc900179d81f0 RDI: ffffc900179d81f8
RBP: ffffc900179d81f0 R08: ffffffff8acbe0f4 R09: ffffffff8acbe0f8
R10: 000000000000c44c R11: 000000000006e027 R12: ffffc900179d8240
R13: dffffc0000000000 R14: ffffc900179d8248 R15: ffffc900179d81f8
FS: 00007f2c8b150700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc900179d7fd8 CR3: 0000000059456000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
This bug 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 bug report. See:
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