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================================================================== BUG: KCSAN: data-race in _copy_to_iter / fat_set_state write to 0xffff888118f69025 of 1 bytes by task 29801 on cpu 1: fat_set_state+0x16a/0x1d0 fat_fill_super+0x2238/0x26c0 fs/fat/inode.c:1882 vfat_fill_super+0x2c/0x40 fs/fat/namei_vfat.c:1200 mount_bdev+0x1e2/0x280 fs/super.c:1401 vfat_mount+0x2d/0x40 fs/fat/namei_vfat.c:1207 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610 vfs_get_tree+0x49/0x190 fs/super.c:1531 do_new_mount+0x200/0x650 fs/namespace.c:3040 path_mount+0x4aa/0xb70 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x281/0x2d0 fs/namespace.c:3568 __x64_sys_mount+0x63/0x70 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888118f69000 of 1024 bytes by task 12107 on cpu 0: instrument_copy_to_user include/linux/instrumented.h:120 [inline] copyout lib/iov_iter.c:169 [inline] _copy_to_iter+0x116/0x8e0 lib/iov_iter.c:527 copy_page_to_iter+0x333/0x3f0 lib/iov_iter.c:725 copy_folio_to_iter include/linux/uio.h:169 [inline] filemap_read+0x11db/0x1510 mm/filemap.c:2726 blkdev_read_iter+0x2c6/0x370 block/fops.c:598 call_read_iter include/linux/fs.h:2185 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x3a5/0x560 fs/read_write.c:470 ksys_read+0xe8/0x1a0 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __x64_sys_read+0x3e/0x50 fs/read_write.c:621 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12107 Comm: udevd Not tainted 6.1.0-rc4-syzkaller-00020-gf67dd6ce0723-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 ================================================================== I/O error, dev loop4, 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
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/11/10 10:39 | upstream | f67dd6ce0723 | b2488a87 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state | ||
2022/10/14 13:16 | upstream | 6d84c258e804 | 4954e4b2 | .config | console log | report | info | [disk image] [vmlinux] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state |