general protection fault in __xfrm_policy_check
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syzbot
Jun 16, 2019, 4:33:07 AM6/16/19
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 7aa823a9 Linux 4.19.51
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14c0bbe1a00000
kernel config: https://syzkaller.appspot.com/x/.config?x=57222bc62f28e3a6
dashboard link: https://syzkaller.appspot.com/bug?extid=6062290f528aa0a565e2
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+606229...@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
do_mkdirat+0x234/0x2a0 fs/namei.c:3839
__do_sys_mkdir fs/namei.c:3855 [inline]
__se_sys_mkdir fs/namei.c:3853 [inline]
__x64_sys_mkdir+0x5c/0x80 fs/namei.c:3853
kasan: GPF could be caused by NULL-ptr deref or user memory access
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
general protection fault: 0000 [#1] PREEMPT SMP KASAN
entry_SYSCALL_64_after_hwframe+0x49/0xbe
CPU: 1 PID: 2829 Comm: syz-executor.5 Not tainted 4.19.51 #23
RIP: 0033:0x4586e7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 cd c3 fb ff c3
66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 0f 83 ad c3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:net_generic include/net/netns/generic.h:45 [inline]
RIP: 0010:xfrmi_decode_session+0x1c1/0x790 net/xfrm/xfrm_interface.c:94
RSP: 002b:00007f7540c16a88 EFLAGS: 00000246
Code: 0a 78 fb 85 db 58 0f 85 93 03 00 00 e8 58 09 78 fb 49 8d bc 24 48 1b
00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f
85 61 05 00 00 4d 8b a4 24 48 1b 00 00 e8 08 3b 65
ORIG_RAX: 0000000000000053
RSP: 0018:ffff888033cd7178 EFLAGS: 00010206
RAX: ffffffffffffffda RBX: 00000000200000a8 RCX: 00000000004586e7
RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000040
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc900108da000
RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000000000a
RDX: 0000000000000469 RSI: ffffffff85f2fd98 RDI: 0000000000002348
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000004
RBP: ffff888033cd71a0 R08: ffff888091592440 R09: ffffed1015d24733
R13: 00000000004c818c R14: 00000000004de9c0 R15: 0000000000000003
R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 0000000000000800
kobject: 'loop0' (0000000040a4b4d4): kobject_uevent_env
R13: 0000000000000039 R14: 000000000000000b R15: ffff88805ece0800
kobject: 'loop0' (0000000040a4b4d4): fill_kobj_path: path
= '/devices/virtual/block/loop0'
FS: 00007f5ec03db700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004e77a0 CR3: 0000000089d65000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__xfrm_policy_check+0x1f6/0x2550 net/xfrm/xfrm_policy.c:2342
__xfrm_policy_check2 include/net/xfrm.h:1203 [inline]
xfrm_policy_check include/net/xfrm.h:1208 [inline]
xfrm4_policy_check include/net/xfrm.h:1213 [inline]
vti_input+0x50f/0x790 net/ipv4/ip_vti.c:63
vti_rcv+0x10b/0x140 net/ipv4/ip_vti.c:109
xfrm4_esp_rcv+0xd2/0x230 net/ipv4/xfrm4_protocol.c:100
ip_local_deliver_finish+0x27e/0xc60 net/ipv4/ip_input.c:215
NF_HOOK include/linux/netfilter.h:289 [inline]
NF_HOOK include/linux/netfilter.h:283 [inline]
ip_local_deliver+0x1e9/0x520 net/ipv4/ip_input.c:256
dst_input include/net/dst.h:450 [inline]
ip_rcv_finish+0x1d9/0x2f0 net/ipv4/ip_input.c:414
NF_HOOK include/linux/netfilter.h:289 [inline]
NF_HOOK include/linux/netfilter.h:283 [inline]
ip_rcv+0xe8/0x3f0 net/ipv4/ip_input.c:524
__netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:4932
__netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5044
netif_receive_skb_internal+0x117/0x520 net/core/dev.c:5147
napi_frags_finish net/core/dev.c:5690 [inline]
napi_gro_frags+0x602/0xa20 net/core/dev.c:5763
tun_get_user+0x2ed8/0x4ba0 drivers/net/tun.c:1946
tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:1992
call_write_iter include/linux/fs.h:1820 [inline]
do_iter_readv_writev+0x558/0x830 fs/read_write.c:681
do_iter_write fs/read_write.c:960 [inline]
do_iter_write+0x184/0x5f0 fs/read_write.c:941
vfs_writev+0x1b3/0x2f0 fs/read_write.c:1005
do_writev+0x15e/0x370 fs/read_write.c:1040
__do_sys_writev fs/read_write.c:1113 [inline]
__se_sys_writev fs/read_write.c:1110 [inline]
__x64_sys_writev+0x75/0xb0 fs/read_write.c:1110
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459181
Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b9 fb ff c3 48
83 ec 08 e8 fa 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48
89 c2 e8 43 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007f5ec03daba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 000000000000003e RCX: 0000000000459181
RDX: 0000000000000001 RSI: 00007f5ec03dac00 RDI: 00000000000000f0
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f5ec03db9d0 R11: 0000000000000293 R12: 00007f5ec03db6d4
R13: 00000000004c8003 R14: 00000000004de780 R15: 00000000ffffffff
Modules linked in:
---[ end trace f8567461e79aa4a7 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:net_generic include/net/netns/generic.h:45 [inline]
RIP: 0010:xfrmi_decode_session+0x1c1/0x790 net/xfrm/xfrm_interface.c:94
Code: 0a 78 fb 85 db 58 0f 85 93 03 00 00 e8 58 09 78 fb 49 8d bc 24 48 1b
00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f
85 61 05 00 00 4d 8b a4 24 48 1b 00 00 e8 08 3b 65
RSP: 0018:ffff888033cd7178 EFLAGS: 00010206
kobject: 'loop3' (00000000c4116b72): kobject_uevent_env
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc900108da000
RDX: 0000000000000469 RSI: ffffffff85f2fd98 RDI: 0000000000002348
RBP: ffff888033cd71a0 R08: ffff888091592440 R09: ffffed1015d24733
R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 0000000000000800
R13: 0000000000000039 R14: 000000000000000b R15: ffff88805ece0800
FS: 00007f5ec03db700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
kobject: 'loop3' (00000000c4116b72): fill_kobj_path: path
= '/devices/virtual/block/loop3'
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004e77a0 CR3: 0000000089d65000 CR4: 00000000001426e0
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: 7aa823a9 Linux 4.19.51
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14c0bbe1a00000
kernel config: https://syzkaller.appspot.com/x/.config?x=57222bc62f28e3a6
dashboard link: https://syzkaller.appspot.com/bug?extid=6062290f528aa0a565e2
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+606229...@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
do_mkdirat+0x234/0x2a0 fs/namei.c:3839
__do_sys_mkdir fs/namei.c:3855 [inline]
__se_sys_mkdir fs/namei.c:3853 [inline]
__x64_sys_mkdir+0x5c/0x80 fs/namei.c:3853
kasan: GPF could be caused by NULL-ptr deref or user memory access
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
general protection fault: 0000 [#1] PREEMPT SMP KASAN
entry_SYSCALL_64_after_hwframe+0x49/0xbe
CPU: 1 PID: 2829 Comm: syz-executor.5 Not tainted 4.19.51 #23
RIP: 0033:0x4586e7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 cd c3 fb ff c3
66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 0f 83 ad c3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:net_generic include/net/netns/generic.h:45 [inline]
RIP: 0010:xfrmi_decode_session+0x1c1/0x790 net/xfrm/xfrm_interface.c:94
RSP: 002b:00007f7540c16a88 EFLAGS: 00000246
Code: 0a 78 fb 85 db 58 0f 85 93 03 00 00 e8 58 09 78 fb 49 8d bc 24 48 1b
00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f
85 61 05 00 00 4d 8b a4 24 48 1b 00 00 e8 08 3b 65
ORIG_RAX: 0000000000000053
RSP: 0018:ffff888033cd7178 EFLAGS: 00010206
RAX: ffffffffffffffda RBX: 00000000200000a8 RCX: 00000000004586e7
RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000040
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc900108da000
RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000000000a
RDX: 0000000000000469 RSI: ffffffff85f2fd98 RDI: 0000000000002348
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000004
RBP: ffff888033cd71a0 R08: ffff888091592440 R09: ffffed1015d24733
R13: 00000000004c818c R14: 00000000004de9c0 R15: 0000000000000003
R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 0000000000000800
kobject: 'loop0' (0000000040a4b4d4): kobject_uevent_env
R13: 0000000000000039 R14: 000000000000000b R15: ffff88805ece0800
kobject: 'loop0' (0000000040a4b4d4): fill_kobj_path: path
= '/devices/virtual/block/loop0'
FS: 00007f5ec03db700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004e77a0 CR3: 0000000089d65000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__xfrm_policy_check+0x1f6/0x2550 net/xfrm/xfrm_policy.c:2342
__xfrm_policy_check2 include/net/xfrm.h:1203 [inline]
xfrm_policy_check include/net/xfrm.h:1208 [inline]
xfrm4_policy_check include/net/xfrm.h:1213 [inline]
vti_input+0x50f/0x790 net/ipv4/ip_vti.c:63
vti_rcv+0x10b/0x140 net/ipv4/ip_vti.c:109
xfrm4_esp_rcv+0xd2/0x230 net/ipv4/xfrm4_protocol.c:100
ip_local_deliver_finish+0x27e/0xc60 net/ipv4/ip_input.c:215
NF_HOOK include/linux/netfilter.h:289 [inline]
NF_HOOK include/linux/netfilter.h:283 [inline]
ip_local_deliver+0x1e9/0x520 net/ipv4/ip_input.c:256
dst_input include/net/dst.h:450 [inline]
ip_rcv_finish+0x1d9/0x2f0 net/ipv4/ip_input.c:414
NF_HOOK include/linux/netfilter.h:289 [inline]
NF_HOOK include/linux/netfilter.h:283 [inline]
ip_rcv+0xe8/0x3f0 net/ipv4/ip_input.c:524
__netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:4932
__netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5044
netif_receive_skb_internal+0x117/0x520 net/core/dev.c:5147
napi_frags_finish net/core/dev.c:5690 [inline]
napi_gro_frags+0x602/0xa20 net/core/dev.c:5763
tun_get_user+0x2ed8/0x4ba0 drivers/net/tun.c:1946
tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:1992
call_write_iter include/linux/fs.h:1820 [inline]
do_iter_readv_writev+0x558/0x830 fs/read_write.c:681
do_iter_write fs/read_write.c:960 [inline]
do_iter_write+0x184/0x5f0 fs/read_write.c:941
vfs_writev+0x1b3/0x2f0 fs/read_write.c:1005
do_writev+0x15e/0x370 fs/read_write.c:1040
__do_sys_writev fs/read_write.c:1113 [inline]
__se_sys_writev fs/read_write.c:1110 [inline]
__x64_sys_writev+0x75/0xb0 fs/read_write.c:1110
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459181
Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b9 fb ff c3 48
83 ec 08 e8 fa 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48
89 c2 e8 43 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007f5ec03daba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 000000000000003e RCX: 0000000000459181
RDX: 0000000000000001 RSI: 00007f5ec03dac00 RDI: 00000000000000f0
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f5ec03db9d0 R11: 0000000000000293 R12: 00007f5ec03db6d4
R13: 00000000004c8003 R14: 00000000004de780 R15: 00000000ffffffff
Modules linked in:
---[ end trace f8567461e79aa4a7 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:net_generic include/net/netns/generic.h:45 [inline]
RIP: 0010:xfrmi_decode_session+0x1c1/0x790 net/xfrm/xfrm_interface.c:94
Code: 0a 78 fb 85 db 58 0f 85 93 03 00 00 e8 58 09 78 fb 49 8d bc 24 48 1b
00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f
85 61 05 00 00 4d 8b a4 24 48 1b 00 00 e8 08 3b 65
RSP: 0018:ffff888033cd7178 EFLAGS: 00010206
kobject: 'loop3' (00000000c4116b72): kobject_uevent_env
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc900108da000
RDX: 0000000000000469 RSI: ffffffff85f2fd98 RDI: 0000000000002348
RBP: ffff888033cd71a0 R08: ffff888091592440 R09: ffffed1015d24733
R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 0000000000000800
R13: 0000000000000039 R14: 000000000000000b R15: ffff88805ece0800
FS: 00007f5ec03db700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
kobject: 'loop3' (00000000c4116b72): fill_kobj_path: path
= '/devices/virtual/block/loop3'
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004e77a0 CR3: 0000000089d65000 CR4: 00000000001426e0
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
Oct 25, 2019, 4:45:06 AM10/25/19
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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