general protection fault in tcp_splice_read
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syzbot
Nov 20, 2019, 1:48:10 PM11/20/19
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: c555efaf Linux 4.19.84
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13349dace00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9140f2df4ddc6016
dashboard link: https://syzkaller.appspot.com/bug?extid=ceea13b822f11b7e2210
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+ceea13...@syzkaller.appspotmail.com
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: 3343 Comm: syz-executor.5 Not tainted 4.19.84 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:tcp_splice_read+0x167/0xc30 net/ipv4/tcp.c:799
IPVS: ftp: loaded support on port[0] = 21
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 45 0a 00 00 48 b8 00 00 00 00
00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84
c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
RSP: 0018:ffff88804b4f7ba0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88804b4f7cb0 RCX: 1ffff110097a018e
RDX: 000000000000000f RSI: ffff88804bd00c50 RDI: 0000000000000078
RBP: ffff88804b4f7cd8 R08: ffff88804bd00380 R09: ffff88804bd00c70
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880550c8700
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a80457c0
FS: 00007f6f3ebe3700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
kobject: 'kvm' (00000000da21d762): kobject_uevent_env
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc417963d0 CR3: 00000000a4917000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kobject: 'kvm' (00000000da21d762): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
net_ratelimit: 27 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
smc_splice_read+0x266/0x390 net/smc/af_smc.c:1855
sock_splice_read+0xb9/0x100 net/socket.c:859
do_splice_to+0x127/0x180 fs/splice.c:881
do_splice+0xfdf/0x12c0 fs/splice.c:1174
__do_sys_splice fs/splice.c:1415 [inline]
__se_sys_splice fs/splice.c:1395 [inline]
__x64_sys_splice+0x2c6/0x330 fs/splice.c:1395
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a639
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:00007f6f3ebe2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045a639
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 000000000075bf20 R08: 1000000000000003 R09: 000000000000000a
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6f3ebe36d4
protocol 88fb is buggy, dev hsr_slave_0
R13: 00000000004ca5d1 R14: 00000000004e1790 R15: 00000000ffffffff
Modules linked in:
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_1
kobject: 'kvm' (00000000da21d762): kobject_uevent_env
kobject: 'kvm' (00000000da21d762): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
---[ end trace 7a0bc262e975d635 ]---
kobject: 'loop2' (00000000603103ac): kobject_uevent_env
kobject: 'loop2' (00000000603103ac): fill_kobj_path: path
= '/devices/virtual/block/loop2'
RIP: 0010:tcp_splice_read+0x167/0xc30 net/ipv4/tcp.c:799
xt_helper: cannot load conntrack support for proto=7
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 45 0a 00 00 48 b8 00 00 00 00
00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84
c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
kobject: 'loop0' (00000000296f041d): kobject_uevent_env
kobject: 'loop0' (00000000296f041d): fill_kobj_path: path
= '/devices/virtual/block/loop0'
RSP: 0018:ffff88804b4f7ba0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88804b4f7cb0 RCX: 1ffff110097a018e
RDX: 000000000000000f RSI: ffff88804bd00c50 RDI: 0000000000000078
kobject: 'loop0' (00000000296f041d): kobject_uevent_env
kobject: 'loop0' (00000000296f041d): fill_kobj_path: path
= '/devices/virtual/block/loop0'
RBP: ffff88804b4f7cd8 R08: ffff88804bd00380 R09: ffff88804bd00c70
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880550c8700
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a80457c0
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
FS: 00007f6f3ebe3700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe11b49fdb8 CR3: 00000000a4917000 CR4: 00000000001406e0
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 syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: c555efaf Linux 4.19.84
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13349dace00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9140f2df4ddc6016
dashboard link: https://syzkaller.appspot.com/bug?extid=ceea13b822f11b7e2210
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+ceea13...@syzkaller.appspotmail.com
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: 3343 Comm: syz-executor.5 Not tainted 4.19.84 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:tcp_splice_read+0x167/0xc30 net/ipv4/tcp.c:799
IPVS: ftp: loaded support on port[0] = 21
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 45 0a 00 00 48 b8 00 00 00 00
00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84
c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
RSP: 0018:ffff88804b4f7ba0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88804b4f7cb0 RCX: 1ffff110097a018e
RDX: 000000000000000f RSI: ffff88804bd00c50 RDI: 0000000000000078
RBP: ffff88804b4f7cd8 R08: ffff88804bd00380 R09: ffff88804bd00c70
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880550c8700
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a80457c0
FS: 00007f6f3ebe3700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
kobject: 'kvm' (00000000da21d762): kobject_uevent_env
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc417963d0 CR3: 00000000a4917000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kobject: 'kvm' (00000000da21d762): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
net_ratelimit: 27 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
smc_splice_read+0x266/0x390 net/smc/af_smc.c:1855
sock_splice_read+0xb9/0x100 net/socket.c:859
do_splice_to+0x127/0x180 fs/splice.c:881
do_splice+0xfdf/0x12c0 fs/splice.c:1174
__do_sys_splice fs/splice.c:1415 [inline]
__se_sys_splice fs/splice.c:1395 [inline]
__x64_sys_splice+0x2c6/0x330 fs/splice.c:1395
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a639
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:00007f6f3ebe2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045a639
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 000000000075bf20 R08: 1000000000000003 R09: 000000000000000a
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6f3ebe36d4
protocol 88fb is buggy, dev hsr_slave_0
R13: 00000000004ca5d1 R14: 00000000004e1790 R15: 00000000ffffffff
Modules linked in:
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_1
kobject: 'kvm' (00000000da21d762): kobject_uevent_env
kobject: 'kvm' (00000000da21d762): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
---[ end trace 7a0bc262e975d635 ]---
kobject: 'loop2' (00000000603103ac): kobject_uevent_env
kobject: 'loop2' (00000000603103ac): fill_kobj_path: path
= '/devices/virtual/block/loop2'
RIP: 0010:tcp_splice_read+0x167/0xc30 net/ipv4/tcp.c:799
xt_helper: cannot load conntrack support for proto=7
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 45 0a 00 00 48 b8 00 00 00 00
00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84
c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
kobject: 'loop0' (00000000296f041d): kobject_uevent_env
kobject: 'loop0' (00000000296f041d): fill_kobj_path: path
= '/devices/virtual/block/loop0'
RSP: 0018:ffff88804b4f7ba0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88804b4f7cb0 RCX: 1ffff110097a018e
RDX: 000000000000000f RSI: ffff88804bd00c50 RDI: 0000000000000078
kobject: 'loop0' (00000000296f041d): kobject_uevent_env
kobject: 'loop0' (00000000296f041d): fill_kobj_path: path
= '/devices/virtual/block/loop0'
RBP: ffff88804b4f7cd8 R08: ffff88804bd00380 R09: ffff88804bd00c70
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880550c8700
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a80457c0
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
FS: 00007f6f3ebe3700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe11b49fdb8 CR3: 00000000a4917000 CR4: 00000000001406e0
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 syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Dec 20, 2019, 7:31:08 AM12/20/19
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: 7d120bf2 Linux 4.19.90
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=133fb8c6e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=f97143d0904aeaa
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=125d5efee00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+ceea13...@syzkaller.appspotmail.com
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: 8563 Comm: syz-executor589 Not tainted 4.19.90-syzkaller #0
RAX: dffffc0000000000 RBX: ffff8880a55a7cb0 RCX: 1ffff11014911d36
RDX: 000000000000000f RSI: ffff8880a488e990 RDI: 0000000000000078
RBP: ffff8880a55a7cd8 R08: ffff8880a488e0c0 R09: ffff8880a488e9b0
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4cc2ec0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888095d37300
FS: 00007f0ce9148700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
__do_sys_splice fs/splice.c:1428 [inline]
__se_sys_splice fs/splice.c:1408 [inline]
__x64_sys_splice+0x2c6/0x330 fs/splice.c:1408
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4484b9
Code: e8 0c 0f 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7
RSP: 002b:00007f0ce9147d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006ddc78 RCX: 00000000004484b9
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc7c
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000064616561
Modules linked in:
---[ end trace be85569b3da478fa ]---
RAX: dffffc0000000000 RBX: ffff8880a55a7cb0 RCX: 1ffff11014911d36
RDX: 000000000000000f RSI: ffff8880a488e990 RDI: 0000000000000078
RBP: ffff8880a55a7cd8 R08: ffff8880a488e0c0 R09: ffff8880a488e9b0
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4cc2ec0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888095d37300
FS: 00007f0ce9148700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
HEAD commit: 7d120bf2 Linux 4.19.90
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=133fb8c6e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=f97143d0904aeaa
dashboard link: https://syzkaller.appspot.com/bug?extid=ceea13b822f11b7e2210
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13c0b399e00000
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=125d5efee00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+ceea13...@syzkaller.appspotmail.com
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
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:tcp_splice_read+0x167/0xc30 net/ipv4/tcp.c:799
Google 01/01/2011
RIP: 0010:tcp_splice_read+0x167/0xc30 net/ipv4/tcp.c:799
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 45 0a 00 00 48 b8 00 00 00 00
00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84
c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
RSP: 0018:ffff8880a55a7ba0 EFLAGS: 00010206
00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84
c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
RAX: dffffc0000000000 RBX: ffff8880a55a7cb0 RCX: 1ffff11014911d36
RDX: 000000000000000f RSI: ffff8880a488e990 RDI: 0000000000000078
RBP: ffff8880a55a7cd8 R08: ffff8880a488e0c0 R09: ffff8880a488e9b0
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4cc2ec0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888095d37300
FS: 00007f0ce9148700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0ce9126e78 CR3: 0000000087e8a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
smc_splice_read+0x266/0x390 net/smc/af_smc.c:1855
sock_splice_read+0xb9/0x100 net/socket.c:859
do_splice_to+0x127/0x180 fs/splice.c:881
do_splice+0x1048/0x1340 fs/splice.c:1186
sock_splice_read+0xb9/0x100 net/socket.c:859
do_splice_to+0x127/0x180 fs/splice.c:881
__do_sys_splice fs/splice.c:1428 [inline]
__se_sys_splice fs/splice.c:1408 [inline]
__x64_sys_splice+0x2c6/0x330 fs/splice.c:1408
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4484b9
Code: e8 0c 0f 03 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 fb 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0ce9147d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006ddc78 RCX: 00000000004484b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00000000006ddc70 R08: 000000000d86dac9 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc7c
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000064616561
Modules linked in:
---[ end trace be85569b3da478fa ]---
RIP: 0010:tcp_splice_read+0x167/0xc30 net/ipv4/tcp.c:799
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 45 0a 00 00 48 b8 00 00 00 00
00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84
c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
RSP: 0018:ffff8880a55a7ba0 EFLAGS: 00010206
00 fc ff df 4d 8b 6d 18 49 8d 7d 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84
c0 74 08 3c 03 0f 8e 3c 09 00 00 45 8b 6d 78 31 ff
RAX: dffffc0000000000 RBX: ffff8880a55a7cb0 RCX: 1ffff11014911d36
RDX: 000000000000000f RSI: ffff8880a488e990 RDI: 0000000000000078
RBP: ffff8880a55a7cd8 R08: ffff8880a488e0c0 R09: ffff8880a488e9b0
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4cc2ec0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888095d37300
FS: 00007f0ce9148700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0ce9126e78 CR3: 0000000087e8a000 CR4: 00000000001406e0
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