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================================================================== BUG: KCSAN: data-race in do_epoll_wait / ep_poll_callback write to 0xffff88814594bee8 of 4 bytes by task 18495 on cpu 1: ep_send_events fs/eventpoll.c:1850 [inline] ep_poll fs/eventpoll.c:1969 [inline] do_epoll_wait+0x855/0xef0 fs/eventpoll.c:2428 __do_sys_epoll_wait fs/eventpoll.c:2440 [inline] __se_sys_epoll_wait fs/eventpoll.c:2435 [inline] __x64_sys_epoll_wait+0x137/0x170 fs/eventpoll.c:2435 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 read to 0xffff88814594bee8 of 4 bytes by task 18508 on cpu 0: ep_poll_callback+0x4a8/0x5b0 fs/eventpoll.c:1351 __wake_up_common kernel/sched/wait.c:89 [inline] __wake_up_common_lock kernel/sched/wait.c:106 [inline] __wake_up_sync_key+0x51/0x80 kernel/sched/wait.c:173 unix_write_space+0xcd/0x150 net/unix/af_unix.c:547 sock_wfree+0x11e/0x330 net/core/sock.c:2482 unix_destruct_scm+0x12e/0x160 net/unix/af_unix.c:1881 skb_release_head_state+0xbb/0x1a0 net/core/skbuff.c:1188 skb_release_all net/core/skbuff.c:1200 [inline] __kfree_skb+0x16/0x150 net/core/skbuff.c:1216 kfree_skb_reason+0xb0/0x2b0 net/core/skbuff.c:1252 kfree_skb include/linux/skbuff.h:1262 [inline] unix_release_sock+0x642/0x790 net/unix/af_unix.c:659 unix_release+0x57/0x80 net/unix/af_unix.c:1049 __sock_release net/socket.c:659 [inline] sock_close+0x68/0x150 net/socket.c:1421 __fput+0x2c1/0x660 fs/file_table.c:422 __fput_sync+0x44/0x60 fs/file_table.c:507 __do_sys_close fs/open.c:1556 [inline] __se_sys_close+0x101/0x1b0 fs/open.c:1541 __x64_sys_close+0x1f/0x30 fs/open.c:1541 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 value changed: 0xe000101e -> 0xe0000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 18508 Comm: syz-executor.0 Tainted: G W 6.9.0-rc1-syzkaller-00178-g317c7bc0ef03 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/03/29 13:40 | upstream | 317c7bc0ef03 | c52bcb23 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in do_epoll_wait / ep_poll_callback | ||
2024/03/08 06:09 | upstream | 3aaa8ce7a335 | cf82cde1 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in do_epoll_wait / ep_poll_callback | ||
2024/03/01 03:08 | upstream | 87adedeba51a | 352ab904 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in do_epoll_wait / ep_poll_callback |