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================================================================== BUG: KCSAN: data-race in __tipc_sendstream / tipc_poll read-write to 0xffff8881035d5386 of 2 bytes by task 4005 on cpu 0: __tipc_sendstream+0x7c0/0xb10 net/tipc/socket.c:1628 tipc_sendstream+0x3e/0x60 net/tipc/socket.c:1546 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:727 sock_write_iter+0x186/0x1c0 net/socket.c:1131 new_sync_write fs/read_write.c:591 [inline] vfs_write+0x79b/0x950 fs/read_write.c:684 ksys_write+0xeb/0x1b0 fs/read_write.c:736 __do_sys_write fs/read_write.c:747 [inline] __se_sys_write fs/read_write.c:744 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:744 x64_sys_call+0x2a45/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff8881035d5386 of 2 bytes by task 4002 on cpu 1: tsk_conn_cong net/tipc/socket.c:222 [inline] tipc_poll+0x1f6/0x360 net/tipc/socket.c:806 sock_poll+0x22d/0x250 net/socket.c:1379 vfs_poll include/linux/poll.h:82 [inline] __io_arm_poll_handler+0x1e5/0xd40 io_uring/poll.c:583 io_poll_add+0x70/0xf0 io_uring/poll.c:893 __io_issue_sqe io_uring/io_uring.c:1734 [inline] io_issue_sqe+0x15f/0xaf0 io_uring/io_uring.c:1753 io_queue_sqe io_uring/io_uring.c:1969 [inline] io_submit_sqe io_uring/io_uring.c:2225 [inline] io_submit_sqes+0x67f/0x1050 io_uring/io_uring.c:2342 __do_sys_io_uring_enter io_uring/io_uring.c:3402 [inline] __se_sys_io_uring_enter+0x1ce/0x1c00 io_uring/io_uring.c:3336 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3336 x64_sys_call+0x26cb/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x0041 -> 0x0082 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 4002 Comm: syz.1.171 Not tainted 6.14.0-syzkaller-10514-g7f2ff7b62617 #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/03/30 13:40 | upstream | 7f2ff7b62617 | d3999433 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __tipc_sendstream / tipc_poll | ||
2025/03/27 12:13 | upstream | 1e1ba8d23dae | 20510e88 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __tipc_sendstream / tipc_poll |