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Date:   Wed, 03 Apr 2019 04:04:05 -0700
From:   syzbot <syzbot+537175332b212b4d885b@...kaller.appspotmail.com>
To:     alexander.h.duyck@...el.com, amritha.nambiar@...el.com,
        ast@...nel.org, bpf@...r.kernel.org, daniel@...earbox.net,
        davem@...emloft.net, ecree@...arflare.com, fw@...len.de,
        idosch@...lanox.com, jiri@...lanox.com, kafai@...com,
        kuznet@....inr.ac.ru, linux-kernel@...r.kernel.org,
        lirongqing@...du.com, netdev@...r.kernel.org, petrm@...lanox.com,
        sd@...asysnail.net, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, yhs@...com,
        yoshfuji@...ux-ipv6.org
Subject: BUG: using __this_cpu_read() in preemptible code in sk_mc_loop

Hello,

syzbot found the following crash on:

HEAD commit:    e1427237 macsec: add noinline tag to avoid a frame size wa..
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11269673200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8e9bc94c16d346a6
dashboard link: https://syzkaller.appspot.com/bug?extid=537175332b212b4d885b
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=147a3553200000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12ef9c4b200000

The bug was bisected to:

commit 97cdcf37b57e3f204be3000b9eab9686f38b4356
Author: Florian Westphal <fw@...len.de>
Date:   Mon Apr 1 14:42:13 2019 +0000

     net: place xmit recursion in softnet data

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1084ac4b200000
final crash:    https://syzkaller.appspot.com/x/report.txt?x=1284ac4b200000
console output: https://syzkaller.appspot.com/x/log.txt?x=1484ac4b200000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+537175332b212b4d885b@...kaller.appspotmail.com
Fixes: 97cdcf37b57e ("net: place xmit recursion in softnet data")

check_preemption_disabled: 3 callbacks suppressed
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007ffcadb0d1df R14: 00007f10219b69c0 R15: 20c49ba5e353f7cf
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007ffcadb0d1df R14: 00007f10219b69c0 R15: 20c49ba5e353f7cf
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007ffcadb0d1df R14: 00007f10219b69c0 R15: 20c49ba5e353f7cf
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007ffcadb0d1df R14: 00007f10219b69c0 R15: 20c49ba5e353f7cf
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007ffcadb0d1df R14: 00007f10219b69c0 R15: 20c49ba5e353f7cf
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007ffcadb0d1df R14: 00007f10219b69c0 R15: 20c49ba5e353f7cf
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007ffcadb0d1df R14: 00007f10219b69c0 R15: 20c49ba5e353f7cf
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007ffcadb0d1df R14: 00007f10219b69c0 R15: 20c49ba5e353f7cf
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac5c
R13: 00007ffcadb0d1df R14: 00007f10219b69c0 R15: 20c49ba5e353f7cf
BUG: using __this_cpu_read() in preemptible [00000000] code:  
syz-executor284/7845
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705
CPU: 0 PID: 7845 Comm: syz-executor284 Not tainted 5.1.0-rc2+ #118
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x172/0x1f0 lib/dump_stack.c:113
  __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
  dev_recursion_level include/linux/netdevice.h:3052 [inline]
  sk_mc_loop+0x1d/0x210 net/core/sock.c:705
  ip_mc_output+0x2ef/0xf70 net/ipv4/ip_output.c:352
  dst_output include/net/dst.h:433 [inline]
  ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124
  ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465
  ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485
  raw_sendmsg+0x1e6d/0x2f20 net/ipv4/raw.c:676
  inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
  sock_sendmsg_nosec net/socket.c:651 [inline]
  sock_sendmsg+0xdd/0x130 net/socket.c:661
  kernel_sendmsg+0x44/0x50 net/socket.c:681
  sock_no_sendpage+0x116/0x150 net/core/sock.c:2716
  inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:820
  kernel_sendpage+0x95/0xf0 net/socket.c:3643
  sock_sendpage+0x8b/0xc0 net/socket.c:934
  pipe_to_sendpage+0x299/0x370 fs/splice.c:448
  splice_from_pipe_feed fs/splice.c:499 [inline]
  __splice_from_pipe+0x395/0x7d0 fs/splice.c:623
  splice_from_pipe+0x108/0x170 fs/splice.c:658
  generic_splice_sendpage+0x3c/0x50 fs/splice.c:828
  do_splice_from fs/splice.c:847 [inline]
  do_splice+0x70a/0x13c0 fs/splice.c:1154
  __do_sys_splice fs/splice.c:1424 [inline]
  __se_sys_splice fs/splice.c:1404 [inline]
  __x64_sys_splice+0x2c6/0x330 fs/splice.c:1404
  do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4458b9
Code: e8 bc b7 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f10219b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000006dac58 RCX: 00000000004458b9
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006dac50 R08: 0000000000010005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0


---
This bug is generated by a bot. It may contain errors.
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