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================================================================== BUG: KCSAN: data-race in __sys_connect / fasync_insert_entry read-write to 0xffff88811f382e70 of 4 bytes by task 20740 on cpu 1: fasync_insert_entry+0x124/0x150 fs/fcntl.c:1063 fasync_add_entry fs/fcntl.c:1090 [inline] fasync_helper+0x5d/0xc0 fs/fcntl.c:1108 sock_fasync+0x5a/0xc0 net/socket.c:1452 setfl fs/fcntl.c:77 [inline] do_fcntl+0xb8d/0xd70 fs/fcntl.c:473 __do_sys_fcntl fs/fcntl.c:586 [inline] __se_sys_fcntl+0xbf/0x1b0 fs/fcntl.c:571 __x64_sys_fcntl+0x43/0x50 fs/fcntl.c:571 x64_sys_call+0x209e/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:73 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff88811f382e70 of 4 bytes by task 20738 on cpu 0: __sys_connect_file net/socket.c:2068 [inline] __sys_connect+0x18b/0x1b0 net/socket.c:2084 __do_sys_connect net/socket.c:2094 [inline] __se_sys_connect net/socket.c:2091 [inline] __x64_sys_connect+0x41/0x50 net/socket.c:2091 x64_sys_call+0x2220/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:43 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000002 -> 0x00042002 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 20738 Comm: syz.4.5798 Tainted: G W 6.11.0-syzkaller-07983-g7856a565416e #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/09/22 04:53 | upstream | 7856a565416e | 6f888b75 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __sys_connect / fasync_insert_entry |