================================================================== BUG: KCSAN: data-race in inode_update_timestamps / inode_update_timestamps write to 0xffff888169be5b50 of 8 bytes by task 8719 on cpu 1: inode_set_atime_to_ts include/linux/fs.h:1537 [inline] inode_update_timestamps+0x4d1/0x560 fs/inode.c:1914 generic_update_time fs/inode.c:1936 [inline] inode_update_time fs/inode.c:1956 [inline] touch_atime+0x15c/0x2d0 fs/inode.c:2028 do_readlinkat+0x164/0x210 fs/stat.c:505 __do_sys_readlink fs/stat.c:527 [inline] __se_sys_readlink fs/stat.c:524 [inline] __x64_sys_readlink+0x47/0x50 fs/stat.c:524 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888169be5b50 of 8 bytes by task 1684 on cpu 0: inode_get_atime include/linux/fs.h:1531 [inline] inode_update_timestamps+0x498/0x560 fs/inode.c:1911 generic_update_time fs/inode.c:1936 [inline] inode_update_time fs/inode.c:1956 [inline] touch_atime+0x15c/0x2d0 fs/inode.c:2028 do_readlinkat+0x164/0x210 fs/stat.c:505 __do_sys_readlink fs/stat.c:527 [inline] __se_sys_readlink fs/stat.c:524 [inline] __x64_sys_readlink+0x47/0x50 fs/stat.c:524 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x00000000264412ce -> 0x0000000026dca94e Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1684 Comm: udevd Tainted: G W 6.7.0-rc6-syzkaller-00044-g1a44b0073b92 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ================================================================== I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 0, async page read I/O error, dev loop3, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop3, logical block 2, async page read udevd: attempt to access beyond end of device loop3: rw=0, sector=3, nr_sectors = 1 limit=0 Buffer I/O error on dev loop3, logical block 3, async page read I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2