On Tue, Jul 21, 2020 at 10:43 AM syzbot <syzbot+33db977d6e575c488...@syzkaller.appspotmail.com> wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: 473309fb net: dp83640: fix SIOCSHWTSTAMP to update the str.. > git tree: net > console output: https://syzkaller.appspot.com/x/log.txt?x=175443e7100000 > kernel config: https://syzkaller.appspot.com/x/.config?x=368e8612711aa2cc > dashboard link: https://syzkaller.appspot.com/bug?extid=33db977d6e575c4884b1 > 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+33db977d6e575c488...@syzkaller.appspotmail.com > > BUG: stack guard page was hit at 00000000568268d5 (stack is > 00000000fd6fd35d..00000000fd6d22ec) > kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN > CPU: 0 PID: 30079 Comm: syz-executor.0 Not tainted 5.8.0-rc4-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > RIP: 0010:pvclock_clocksource_read+0x21/0x510 arch/x86/kernel/pvclock.c:68 > Code: 2e 0f 1f 84 00 00 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 f8 41 57 > 48 c1 e8 03 41 56 41 55 41 54 4c 8d 67 03 55 4c 89 e1 <53> 48 c1 e9 03 48 89 > fb 48 83 ec 58 0f b6 04 10 0f b6 14 11 48 89 > RSP: 0018:ffffc90016598000 EFLAGS: 00010806 > RAX: 1ffffffff17cec00 RBX: ffff8880ae620dc0 RCX: ffffffff8be76003 > RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8be76000 > RBP: ffff888059596380 R08: 0000000000000001 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8be76003 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > FS: 00007f3e110c1700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffc90016597ff8 CR3: 000000005d14d000 CR4: 00000000001406f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > kvm_clock_read arch/x86/kernel/kvmclock.c:90 [inline] > kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:102 > paravirt_sched_clock arch/x86/include/asm/paravirt.h:22 [inline] > sched_clock+0x2a/0x40 arch/x86/kernel/tsc.c:252 > sched_clock_cpu+0x18/0x1b0 kernel/sched/clock.c:371 > irqtime_account_irq+0x63/0x280 kernel/sched/cputime.c:60 > account_irq_enter_time include/linux/vtime.h:109 [inline] > irq_enter_rcu+0x61/0x140 kernel/softirq.c:356 > sysvec_apic_timer_interrupt+0x13/0x120 arch/x86/kernel/apic/apic.c:1091 > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:587 > RIP: 0010:__orc_find+0x9b/0xf0 arch/x86/kernel/unwind_orc.c:58 > Code: d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 d8 48 39 c1 > 73 b0 4c 8d 63 fc 49 39 ec 73 b3 4d 29 ee 49 c1 fe 02 <4b> 8d 04 76 48 8d 04 > 46 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f > RSP: 0018:ffffc90016598190 EFLAGS: 00000246 > RAX: ffffffff84b1c69e RBX: ffffffff8ae8fef8 RCX: ffffffff84b1cb81 > RDX: 0000000000000000 RSI: ffffffff8b5be90e RDI: ffffffff8ae8fef8 > RBP: ffffffff8ae8fefc R08: ffffffff8b5be944 R09: ffffffff8b5be90e > R10: 000000000007201e R11: 00000000000c2499 R12: ffffffff8ae8fef8 > R13: ffffffff8ae8fef8 R14: 0000000000000000 R15: dffffc0000000000 > orc_find arch/x86/kernel/unwind_orc.c:172 [inline] > unwind_next_frame+0x342/0x1f90 arch/x86/kernel/unwind_orc.c:446 > arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25 > 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 > __kmalloc_reserve net/core/skbuff.c:142 [inline] > pskb_expand_head+0x15a/0x1040 net/core/skbuff.c:1627 > netlink_trim+0x1ea/0x240 net/netlink/af_netlink.c:1285 > netlink_broadcast_filtered+0x65/0xdc0 net/netlink/af_netlink.c:1490 > netlink_broadcast net/netlink/af_netlink.c:1535 [inline] > nlmsg_multicast include/net/netlink.h:1020 [inline] > nlmsg_notify+0x90/0x250 net/netlink/af_netlink.c:2512 > rtnl_notify net/core/rtnetlink.c:737 [inline] > rtmsg_ifinfo_send net/core/rtnetlink.c:3725 [inline] > rtmsg_ifinfo_event net/core/rtnetlink.c:3740 [inline] > rtmsg_ifinfo_event net/core/rtnetlink.c:3728 [inline] > rtnetlink_event+0x193/0x1d0 net/core/rtnetlink.c:5511 > 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 > Lost 627 message(s)! > ---[ end trace 203af1b41d4d3a41 ]--- > RIP: 0010:pvclock_clocksource_read+0x21/0x510 arch/x86/kernel/pvclock.c:68 > Code: 2e 0f 1f 84 00 00 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 f8 41 57 > 48 c1 e8 03 41 56 41 55 41 54 4c 8d 67 03 55 4c 89 e1 <53> 48 c1 e9 03 48 89 > fb 48 83 ec 58 0f b6 04 10 0f b6 14 11 48 89 > RSP: 0018:ffffc90016598000 EFLAGS: 00010806 > RAX: 1ffffffff17cec00 RBX: ffff8880ae620dc0 RCX: ffffffff8be76003 > RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8be76000 > RBP: ffff888059596380 R08: 0000000000000001 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8be76003 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > FS: 00007f3e110c1700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffc90016597ff8 CR3: 000000005d14d000 CR4: 00000000001406f0 > 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 syzkal...@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
#syz dup: BUG: stack guard page was hit in deref_stack_reg
