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================================================================== BUG: KCSAN: data-race in file_remove_privs / selinux_mmap_file write to 0xffff88812bf2c5cc of 4 bytes by task 10922 on cpu 0: inode_has_no_xattr include/linux/fs.h:3653 [inline] file_remove_privs+0x312/0x3a0 fs/inode.c:1947 __generic_file_write_iter+0xdd/0x300 mm/filemap.c:3718 generic_file_write_iter+0x75/0x130 mm/filemap.c:3804 call_write_iter include/linux/fs.h:2116 [inline] do_iter_readv_writev+0x2cb/0x360 fs/read_write.c:740 do_iter_write+0x112/0x4c0 fs/read_write.c:866 vfs_writev fs/read_write.c:939 [inline] do_pwritev+0x1e5/0x3a0 fs/read_write.c:1036 __do_sys_pwritev fs/read_write.c:1083 [inline] __se_sys_pwritev fs/read_write.c:1078 [inline] __x64_sys_pwritev+0x54/0x60 fs/read_write.c:1078 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88812bf2c5cc of 4 bytes by task 10949 on cpu 1: inode_has_perm security/selinux/hooks.c:1705 [inline] selinux_mmap_file+0x5b/0x1f0 security/selinux/hooks.c:3894 security_mmap_file+0x106/0x160 security/security.c:1543 vm_mmap_pgoff+0x70/0x1d0 mm/util.c:515 ksys_mmap_pgoff+0x2a8/0x380 mm/mmap.c:1638 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 10949 Comm: syz-executor.3 Not tainted 5.12.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/04/30 21:09 | upstream | 65c61de9d090 | 77e2b668 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in file_remove_privs / selinux_mmap_file |