==================================================================
BUG: KCSAN: data-race in packet_do_bind / packet_getname
write to 0xffff88810e580cd4 of 4 bytes by task 13566 on cpu 0:
packet_do_bind+0x3d9/0x700 net/packet/af_packet.c:3182
packet_bind+0xc3/0xd0 net/packet/af_packet.c:3246
__sys_bind+0x200/0x290 net/socket.c:1635
__do_sys_bind net/socket.c:1646 [inline]
__se_sys_bind net/socket.c:1644 [inline]
__x64_sys_bind+0x3d/0x50 net/socket.c:1644
do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
read to 0xffff88810e580cd4 of 4 bytes by task 13594 on cpu 1:
packet_getname+0xba/0x1a0 net/packet/af_packet.c:3520
__sys_getsockname+0x10e/0x1a0 net/socket.c:1885
__do_sys_getsockname net/socket.c:1900 [inline]
__se_sys_getsockname net/socket.c:1897 [inline]
__x64_sys_getsockname+0x3e/0x50 net/socket.c:1897
do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 13594 Comm: syz-executor.5 Not tainted 5.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 13594 Comm: syz-executor.5 Not tainted 5.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x116/0x15d lib/dump_stack.c:120
panic+0x1e7/0x5fa kernel/panic.c:231
kcsan_report+0x67b/0x680 kernel/kcsan/report.c:634
kcsan_setup_watchpoint+0x472/0x4d0 kernel/kcsan/core.c:568
packet_getname+0xba/0x1a0 net/packet/af_packet.c:3520
__sys_getsockname+0x10e/0x1a0 net/socket.c:1885
__do_sys_getsockname net/socket.c:1900 [inline]
__se_sys_getsockname net/socket.c:1897 [inline]
__x64_sys_getsockname+0x3e/0x50 net/socket.c:1897
do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465b09
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4990e35188 EFLAGS: 00000246 ORIG_RAX: 0000000000000033
RAX: ffffffffffffffda RBX: 000000000056c200 RCX: 0000000000465b09
RDX: 0000000020000340 RSI: 00000000200003c0 RDI: 000000000000000a
RBP: 00000000004b069f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c200
R13: 00007fff303fda9f R14: 00007f4990e35300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..