==================================================================
BUG: KCSAN: data-race in packet_do_bind / packet_getname
write to 0xffff8880ace11cc4 of 4 bytes by task 9512 on cpu 1:
packet_do_bind+0x1c5/0x600 net/packet/af_packet.c:3155
packet_bind+0x9f/0xe0 net/packet/af_packet.c:3219
__sys_bind+0x1ac/0x1e0 net/socket.c:1662
__do_sys_bind net/socket.c:1673 [inline]
__se_sys_bind net/socket.c:1671 [inline]
__x64_sys_bind+0x48/0x60 net/socket.c:1671
do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x44/0xa9
read to 0xffff8880ace11cc4 of 4 bytes by task 9517 on cpu 0:
packet_getname+0xb5/0x1b0 net/packet/af_packet.c:3493
__sys_getsockname+0xa4/0x160 net/socket.c:1910
__do_sys_getsockname net/socket.c:1925 [inline]
__se_sys_getsockname net/socket.c:1922 [inline]
__x64_sys_getsockname+0x48/0x60 net/socket.c:1922
do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 9517 Comm: syz-executor.2 Not tainted 5.7.0-rc1-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: 0 PID: 9517 Comm: syz-executor.2 Not tainted 5.7.0-rc1-syzkaller #0
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+0x11d/0x187 lib/dump_stack.c:118
panic+0x210/0x640 kernel/panic.c:221
kcsan_report.cold+0xc/0x1a kernel/kcsan/report.c:626
kcsan_setup_watchpoint+0x3fb/0x440 kernel/kcsan/core.c:519
packet_getname+0xb5/0x1b0 net/packet/af_packet.c:3493
__sys_getsockname+0xa4/0x160 net/socket.c:1910
__do_sys_getsockname net/socket.c:1925 [inline]
__se_sys_getsockname net/socket.c:1922 [inline]
__x64_sys_getsockname+0x48/0x60 net/socket.c:1922
do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45ca29
Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa57b3b9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000033
RAX: ffffffffffffffda RBX: 00000000004dd440 RCX: 000000000045ca29
RDX: 0000000020000000 RSI: 00000000200003c0 RDI: 0000000000000004
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000118 R14: 00000000004c3b87 R15: 00007fa57b3ba6d4
Kernel Offset: disabled
Rebooting in 86400 seconds..