general protection fault in skb_release_data
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syzbot
Sep 7, 2020, 12:13:18 AM9/7/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: c37da90e Linux 4.19.143
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=16e72335900000
kernel config: https://syzkaller.appspot.com/x/.config?x=d162ec57805c4e4d
dashboard link: https://syzkaller.appspot.com/bug?extid=9d41e9a3d0a721576004
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+9d41e9...@syzkaller.appspotmail.com
x_tables: duplicate underflow at hook 2
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: 0 Comm: swapper/1 Not tainted 4.19.143-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kfree_skb_list net/core/skbuff.c:670 [inline]
RIP: 0010:skb_release_data+0x6b1/0x920 net/core/skbuff.c:571
Code: e8 84 64 b6 fb 84 db 74 41 e8 4b 63 b6 fb 4c 89 e7 e8 43 f9 d2 fb e9 97 fa ff ff 4c 89 e5 e8 36 63 b6 fb 48 89 e8 48 c1 e8 03 <80> 3c 18 00 0f 85 6d 01 00 00 4c 8b 65 00 48 89 ef e8 09 f5 ff ff
RSP: 0018:ffff8880ae707be0 EFLAGS: 00010247
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff85b34983
RDX: 0000000000000100 RSI: ffffffff85b34e9a RDI: ffff88800012fc88
RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88800012fc80 R15: ffff88800012fcb0
FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7370a7f740 CR3: 0000000040c6c000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
skb_release_all net/core/skbuff.c:631 [inline]
__kfree_skb net/core/skbuff.c:645 [inline]
kfree_skb+0x11a/0x3d0 net/core/skbuff.c:663
inet_frag_rbtree_purge+0x9b/0xd0 net/ipv4/inet_fragment.c:196
inet_frag_destroy+0x1d4/0x230 net/ipv4/inet_fragment.c:227
inet_frag_put include/net/inet_frag.h:125 [inline]
ipq_put+0x3b/0x50 net/ipv4/ip_fragment.c:112
call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
__run_timers kernel/time/timer.c:1703 [inline]
run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1716
__do_softirq+0x26c/0x9a0 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:544 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: 48 89 df e8 74 45 62 fa e9 2e ff ff ff 48 89 df e8 67 45 62 fa eb 82 90 90 90 90 90 e9 07 00 00 00 0f 00 2d f4 5b 4a 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d e4 5b 4a 00 f4 c3 90 90 41 56 41 55
RSP: 0018:ffff8880a9f4fd58 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11a4b6c RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a9f3cc44
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff88d25b50
R13: 1ffff110153e9fb5 R14: 0000000000000000 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
default_idle+0x49/0x310 arch/x86/kernel/process.c:557
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x2ec/0x4b0 kernel/sched/idle.c:263
cpu_startup_entry+0xc5/0xe0 kernel/sched/idle.c:369
start_secondary+0x41f/0x580 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
Modules linked in:
---[ end trace c850b0aa8cbf707d ]---
RIP: 0010:kfree_skb_list net/core/skbuff.c:670 [inline]
RIP: 0010:skb_release_data+0x6b1/0x920 net/core/skbuff.c:571
Code: e8 84 64 b6 fb 84 db 74 41 e8 4b 63 b6 fb 4c 89 e7 e8 43 f9 d2 fb e9 97 fa ff ff 4c 89 e5 e8 36 63 b6 fb 48 89 e8 48 c1 e8 03 <80> 3c 18 00 0f 85 6d 01 00 00 4c 8b 65 00 48 89 ef e8 09 f5 ff ff
RSP: 0018:ffff8880ae707be0 EFLAGS: 00010247
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff85b34983
RDX: 0000000000000100 RSI: ffffffff85b34e9a RDI: ffff88800012fc88
RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88800012fc80 R15: ffff88800012fcb0
FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7370a7f740 CR3: 0000000040c6c000 CR4: 00000000001426e0
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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: c37da90e Linux 4.19.143
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=16e72335900000
kernel config: https://syzkaller.appspot.com/x/.config?x=d162ec57805c4e4d
dashboard link: https://syzkaller.appspot.com/bug?extid=9d41e9a3d0a721576004
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+9d41e9...@syzkaller.appspotmail.com
x_tables: duplicate underflow at hook 2
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: 0 Comm: swapper/1 Not tainted 4.19.143-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kfree_skb_list net/core/skbuff.c:670 [inline]
RIP: 0010:skb_release_data+0x6b1/0x920 net/core/skbuff.c:571
Code: e8 84 64 b6 fb 84 db 74 41 e8 4b 63 b6 fb 4c 89 e7 e8 43 f9 d2 fb e9 97 fa ff ff 4c 89 e5 e8 36 63 b6 fb 48 89 e8 48 c1 e8 03 <80> 3c 18 00 0f 85 6d 01 00 00 4c 8b 65 00 48 89 ef e8 09 f5 ff ff
RSP: 0018:ffff8880ae707be0 EFLAGS: 00010247
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff85b34983
RDX: 0000000000000100 RSI: ffffffff85b34e9a RDI: ffff88800012fc88
RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88800012fc80 R15: ffff88800012fcb0
FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7370a7f740 CR3: 0000000040c6c000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
skb_release_all net/core/skbuff.c:631 [inline]
__kfree_skb net/core/skbuff.c:645 [inline]
kfree_skb+0x11a/0x3d0 net/core/skbuff.c:663
inet_frag_rbtree_purge+0x9b/0xd0 net/ipv4/inet_fragment.c:196
inet_frag_destroy+0x1d4/0x230 net/ipv4/inet_fragment.c:227
inet_frag_put include/net/inet_frag.h:125 [inline]
ipq_put+0x3b/0x50 net/ipv4/ip_fragment.c:112
call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
__run_timers kernel/time/timer.c:1703 [inline]
run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1716
__do_softirq+0x26c/0x9a0 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:544 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: 48 89 df e8 74 45 62 fa e9 2e ff ff ff 48 89 df e8 67 45 62 fa eb 82 90 90 90 90 90 e9 07 00 00 00 0f 00 2d f4 5b 4a 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d e4 5b 4a 00 f4 c3 90 90 41 56 41 55
RSP: 0018:ffff8880a9f4fd58 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11a4b6c RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a9f3cc44
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff88d25b50
R13: 1ffff110153e9fb5 R14: 0000000000000000 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
default_idle+0x49/0x310 arch/x86/kernel/process.c:557
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x2ec/0x4b0 kernel/sched/idle.c:263
cpu_startup_entry+0xc5/0xe0 kernel/sched/idle.c:369
start_secondary+0x41f/0x580 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
Modules linked in:
---[ end trace c850b0aa8cbf707d ]---
RIP: 0010:kfree_skb_list net/core/skbuff.c:670 [inline]
RIP: 0010:skb_release_data+0x6b1/0x920 net/core/skbuff.c:571
Code: e8 84 64 b6 fb 84 db 74 41 e8 4b 63 b6 fb 4c 89 e7 e8 43 f9 d2 fb e9 97 fa ff ff 4c 89 e5 e8 36 63 b6 fb 48 89 e8 48 c1 e8 03 <80> 3c 18 00 0f 85 6d 01 00 00 4c 8b 65 00 48 89 ef e8 09 f5 ff ff
RSP: 0018:ffff8880ae707be0 EFLAGS: 00010247
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff85b34983
RDX: 0000000000000100 RSI: ffffffff85b34e9a RDI: ffff88800012fc88
RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88800012fc80 R15: ffff88800012fcb0
FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7370a7f740 CR3: 0000000040c6c000 CR4: 00000000001426e0
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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Sep 8, 2020, 3:28:24 PM9/8/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 2f166cdc Linux 4.14.196
syzbot found the following issue on:
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1746a5f9900000
kernel config: https://syzkaller.appspot.com/x/.config?x=e2677667b00dfecb
dashboard link: https://syzkaller.appspot.com/bug?extid=94656d26e2e06afc41b5
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=150c597d900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15704735900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
device gtp6 entered promiscuous mode
device vlan0 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
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
Modules linked in:
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6514 Comm: syz-executor932 Not tainted 4.14.196-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888095f0a0c0 task.stack: ffff8880975e0000
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:147 [inline]
RIP: 0010:put_page include/linux/mm.h:860 [inline]
RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2801 [inline]
RIP: 0010:skb_release_data+0x1e3/0x820 net/core/skbuff.c:568
RSP: 0018:ffff8880aeb07ad8 EFLAGS: 00010202
RAX: 0000000000000004 RBX: dffffc0000000000 RCX: 0000000000000002
RDX: 0000000000000100 RSI: 0000000000000002 RDI: 0000000000000020
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000000 R11: ffff888095f0a0c0 R12: 0000000000000000
R13: ffff888092d3b0c0 R14: ffff888092d3b0f0 R15: ffff88808617c240
FS: 0000000001710880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200004c0 CR3: 000000009f552000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
skb_release_all net/core/skbuff.c:631 [inline]
__kfree_skb net/core/skbuff.c:645 [inline]
kfree_skb+0xe7/0x390 net/core/skbuff.c:663
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
skb_release_all net/core/skbuff.c:631 [inline]
__kfree_skb net/core/skbuff.c:645 [inline]
validate_xmit_skb+0x78f/0x9f0 net/core/dev.c:3105
__dev_queue_xmit+0x816/0x2480 net/core/dev.c:3513
garp_queue_xmit net/802/garp.c:262 [inline]
garp_join_timer+0xb9/0xf0 net/802/garp.c:413
call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280
expire_timers+0x232/0x4d0 kernel/time/timer.c:1319
__run_timers kernel/time/timer.c:1644 [inline]
run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1657
__do_softirq+0x254/0xa1d kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x193/0x240 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:console_unlock+0xbeb/0xf20 kernel/printk/printk.c:2405
RSP: 0018:ffff8880975e70d8 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: ffff888095f0a0c0 RBX: 0000000000000200 RCX: 1ffff11012be1532
RDX: 0000000000000000 RSI: ffff888095f0a970 RDI: 0000000000000297
RBP: 0000000000000000 R08: ffffffff8a095d68 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff83e31c30
R13: ffffffff883a0490 R14: dffffc0000000000 R15: 0000000000000048
vprintk_emit+0x224/0x620 kernel/printk/printk.c:1923
vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401
printk+0x9e/0xbc kernel/printk/printk.c:1996
addrconf_notify.cold+0x5e/0x17c net/ipv6/addrconf.c:3450
notifier_call_chain+0x108/0x1a0 kernel/notifier.c:93
call_netdevice_notifiers_info net/core/dev.c:1667 [inline]
__dev_notify_flags+0x234/0x260 net/core/dev.c:6841
rtnl_configure_link+0x141/0x200 net/core/rtnetlink.c:2430
rtnl_newlink+0xfa4/0x1830 net/core/rtnetlink.c:2748
rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433
netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x441929
RSP: 002b:00007fffadbdc448 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441929
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000005
RBP: 00007fffadbdc450 R08: 0000000100000000 R09: 0000000100000000
R10: 0000000100000000 R11: 0000000000000246 R12: 000000000000891f
R13: 0000000000402800 R14: 0000000000000000 R15: 0000000000000000
Code: 58 4d fc 4c 89 f0 48 c1 e8 03 80 3c 18 00 0f 85 48 05 00 00 49 63 c4 48 c1 e0 04 4a 8b 6c 28 30 48 8d 7d 20 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 1d 05 00 00 4c 8b 7d 20 41 f6 c7 01 0f 85 ef
RIP: __read_once_size include/linux/compiler.h:183 [inline] RSP: ffff8880aeb07ad8
RIP: compound_head include/linux/page-flags.h:147 [inline] RSP: ffff8880aeb07ad8
RIP: put_page include/linux/mm.h:860 [inline] RSP: ffff8880aeb07ad8
RIP: __skb_frag_unref include/linux/skbuff.h:2801 [inline] RSP: ffff8880aeb07ad8
RIP: skb_release_data+0x1e3/0x820 net/core/skbuff.c:568 RSP: ffff8880aeb07ad8
---[ end trace c8ffed087b5aa8f0 ]---
---
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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
https://goo.gl/tpsmEJ#testing-patches
syzbot
Sep 10, 2020, 2:53:23 AM9/10/20
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 67957f12 Linux 4.19.144
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17db482d900000
kernel config: https://syzkaller.appspot.com/x/.config?x=c8f92680d5d45401
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1405219e900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9d41e9...@syzkaller.appspotmail.com
device gtp11 entered promiscuous mode
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:put_page include/linux/mm.h:951 [inline]
RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2816 [inline]
RIP: 0010:skb_release_data+0x237/0x920 net/core/skbuff.c:568
Code: 48 c1 e8 03 42 80 3c 28 00 0f 85 d9 05 00 00 48 8b 0c 24 49 63 c4 48 c1 e0 04 48 8b 6c 08 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 c0 05 00 00 48 8b 5d 08 31 ff 49 89 de 41 83
RSP: 0018:ffff8880ae607a48 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffff88808982e640
RDX: 0000000000000100 RSI: ffffffff85b479fa RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
FS: 0000000002257880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
__dev_queue_xmit+0x963/0x2e00 net/core/dev.c:3830
garp_queue_xmit net/802/garp.c:262 [inline]
garp_join_timer+0xb6/0xf0 net/802/garp.c:413
RIP: 0010:console_unlock+0xe7b/0x1110 kernel/printk/printk.c:2465
Code: ff df 48 c1 e8 03 80 3c 08 00 0f 85 66 02 00 00 48 83 3d 9f d3 7d 07 00 0f 84 9e 00 00 00 e8 1c 2a 15 00 48 8b 7c 24 30 57 9d <0f> 1f 44 00 00 e9 9b fc ff ff e8 06 2a 15 00 0f 0b e8 ff 29 15 00
RSP: 0018:ffff88808ef1ec80 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8880a472e300 RBX: 0000000000000200 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff815487b4 RDI: 0000000000000293
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff845cd060
R13: 0000000000000048 R14: 0000000000000000 R15: ffffffff89460d70
vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965
vprintk_func+0x79/0x17e kernel/printk/printk_safe.c:397
printk+0xba/0xed kernel/printk/printk.c:2040
addrconf_notify.cold+0x29/0x6b net/ipv6/addrconf.c:3528
notifier_call_chain+0xc0/0x230 kernel/notifier.c:93
__dev_notify_flags+0x280/0x2b0 net/core/dev.c:7722
rtnl_configure_link+0x169/0x230 net/core/rtnetlink.c:2839
rtnl_newlink+0x104e/0x15b0 net/core/rtnetlink.c:3161
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: 0033:0x441929
Code: e8 5c ad 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 bb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff1d67e8f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
R10: 0000000100000000 R11: 0000000000000246 R12: 000000000000af22
---[ end trace 768330f5d74022b2 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:put_page include/linux/mm.h:951 [inline]
RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2816 [inline]
RIP: 0010:skb_release_data+0x237/0x920 net/core/skbuff.c:568
Code: 48 c1 e8 03 42 80 3c 28 00 0f 85 d9 05 00 00 48 8b 0c 24 49 63 c4 48 c1 e0 04 48 8b 6c 08 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 c0 05 00 00 48 8b 5d 08 31 ff 49 89 de 41 83
RSP: 0018:ffff8880ae607a48 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffff88808982e640
RDX: 0000000000000100 RSI: ffffffff85b479fa RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
FS: 0000000002257880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
HEAD commit: 67957f12 Linux 4.19.144
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17db482d900000
kernel config: https://syzkaller.appspot.com/x/.config?x=c8f92680d5d45401
dashboard link: https://syzkaller.appspot.com/bug?extid=9d41e9a3d0a721576004
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=168e1011900000
compiler: gcc (GCC) 10.1.0-syz 20200507
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1405219e900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9d41e9...@syzkaller.appspotmail.com
device vlan0 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
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: 0 PID: 6663 Comm: syz-executor986 Not tainted 4.19.144-syzkaller #0
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:put_page include/linux/mm.h:951 [inline]
RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2816 [inline]
RIP: 0010:skb_release_data+0x237/0x920 net/core/skbuff.c:568
Code: 48 c1 e8 03 42 80 3c 28 00 0f 85 d9 05 00 00 48 8b 0c 24 49 63 c4 48 c1 e0 04 48 8b 6c 08 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 c0 05 00 00 48 8b 5d 08 31 ff 49 89 de 41 83
RSP: 0018:ffff8880ae607a48 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffff88808982e640
RDX: 0000000000000100 RSI: ffffffff85b479fa RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88808982e640 R15: ffff88808982e670
FS: 0000000002257880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200004c0 CR3: 000000008b4e7000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
skb_release_all net/core/skbuff.c:631 [inline]
__kfree_skb net/core/skbuff.c:645 [inline]
kfree_skb+0x11a/0x3d0 net/core/skbuff.c:663
validate_xmit_skb+0x96a/0xd50 net/core/dev.c:3359
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
skb_release_all net/core/skbuff.c:631 [inline]
__kfree_skb net/core/skbuff.c:645 [inline]
kfree_skb+0x11a/0x3d0 net/core/skbuff.c:663
__dev_queue_xmit+0x963/0x2e00 net/core/dev.c:3830
garp_queue_xmit net/802/garp.c:262 [inline]
garp_join_timer+0xb6/0xf0 net/802/garp.c:413
call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
__run_timers kernel/time/timer.c:1703 [inline]
run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1716
__do_softirq+0x26c/0x9a0 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:544 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
__run_timers kernel/time/timer.c:1703 [inline]
run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1716
__do_softirq+0x26c/0x9a0 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:544 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:console_unlock+0xe7b/0x1110 kernel/printk/printk.c:2465
Code: ff df 48 c1 e8 03 80 3c 08 00 0f 85 66 02 00 00 48 83 3d 9f d3 7d 07 00 0f 84 9e 00 00 00 e8 1c 2a 15 00 48 8b 7c 24 30 57 9d <0f> 1f 44 00 00 e9 9b fc ff ff e8 06 2a 15 00 0f 0b e8 ff 29 15 00
RSP: 0018:ffff88808ef1ec80 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff8880a472e300 RBX: 0000000000000200 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff815487b4 RDI: 0000000000000293
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff845cd060
R13: 0000000000000048 R14: 0000000000000000 R15: ffffffff89460d70
vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965
vprintk_func+0x79/0x17e kernel/printk/printk_safe.c:397
printk+0xba/0xed kernel/printk/printk.c:2040
addrconf_notify.cold+0x29/0x6b net/ipv6/addrconf.c:3528
notifier_call_chain+0xc0/0x230 kernel/notifier.c:93
__dev_notify_flags+0x280/0x2b0 net/core/dev.c:7722
rtnl_configure_link+0x169/0x230 net/core/rtnetlink.c:2839
rtnl_newlink+0x104e/0x15b0 net/core/rtnetlink.c:3161
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: 0033:0x441929
Code: e8 5c ad 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 bb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff1d67e8f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441929
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000005
RBP: 00007fff1d67e900 R08: 0000000100000000 R09: 0000000100000000
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000005
R10: 0000000100000000 R11: 0000000000000246 R12: 000000000000af22
R13: 0000000000402800 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 768330f5d74022b2 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:put_page include/linux/mm.h:951 [inline]
RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2816 [inline]
RIP: 0010:skb_release_data+0x237/0x920 net/core/skbuff.c:568
Code: 48 c1 e8 03 42 80 3c 28 00 0f 85 d9 05 00 00 48 8b 0c 24 49 63 c4 48 c1 e0 04 48 8b 6c 08 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 c0 05 00 00 48 8b 5d 08 31 ff 49 89 de 41 83
RSP: 0018:ffff8880ae607a48 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffff88808982e640
RDX: 0000000000000100 RSI: ffffffff85b479fa RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88808982e640 R15: ffff88808982e670
FS: 0000000002257880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200004c0 CR3: 000000008b4e7000 CR4: 00000000001406f0
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