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================================================================== BUG: KCSAN: data-race in _copy_to_iter / fat_set_state write to 0xffff8881155a0041 of 1 bytes by task 18004 on cpu 0: fat_set_state+0x16e/0x1d0 fat_put_super+0x2e/0x80 fs/fat/inode.c:737 generic_shutdown_super+0xdb/0x210 fs/super.c:641 kill_block_super+0x2a/0x60 fs/super.c:1675 deactivate_locked_super+0x7a/0x1c0 fs/super.c:472 deactivate_super+0x9b/0xb0 fs/super.c:505 cleanup_mnt+0x272/0x2e0 fs/namespace.c:1267 __cleanup_mnt+0x19/0x20 fs/namespace.c:1274 task_work_run+0x135/0x1a0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:108 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline] syscall_exit_to_user_mode+0xbd/0x120 kernel/entry/common.c:212 do_syscall_64+0xda/0x1d0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff8881155a0000 of 1024 bytes by task 7621 on cpu 1: instrument_copy_to_user include/linux/instrumented.h:113 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:29 [inline] iterate_and_advance2 include/linux/iov_iter.h:245 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x126/0xb20 lib/iov_iter.c:186 copy_page_to_iter+0x171/0x2b0 lib/iov_iter.c:381 copy_folio_to_iter include/linux/uio.h:181 [inline] filemap_read+0x42c/0x680 mm/filemap.c:2654 blkdev_read_iter+0x217/0x2c0 block/fops.c:757 call_read_iter include/linux/fs.h:2081 [inline] new_sync_read fs/read_write.c:395 [inline] vfs_read+0x5ab/0x6a0 fs/read_write.c:476 ksys_read+0xeb/0x1a0 fs/read_write.c:619 __do_sys_read fs/read_write.c:629 [inline] __se_sys_read fs/read_write.c:627 [inline] __x64_sys_read+0x42/0x50 fs/read_write.c:627 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7621 Comm: udevd Not tainted 6.8.0-rc6-syzkaller-00120-g87adedeba51a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 ================================================================== I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/03/01 03:02 | upstream | 87adedeba51a | 352ab904 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state | ||
2024/02/21 10:33 | upstream | 9fc1ccccfd8d | 3af7dd65 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state | ||
2024/02/21 06:20 | upstream | fca7526b7d89 | 3af7dd65 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state | ||
2024/01/29 17:25 | upstream | 41bccc98fb79 | 991a98f4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state | ||
2024/01/16 06:16 | upstream | 052d534373b7 | 2a7bcc7f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state | ||
2024/01/01 21:47 | upstream | 610a9b8f49fb | fb427a07 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state |