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================================================================== BUG: KCSAN: data-race in _copy_to_iter / fat_set_state write to 0xffff888161fb1025 of 1 bytes by task 3107 on cpu 1: fat_set_state+0x16e/0x1d0 fat_put_super+0x2e/0x80 fs/fat/inode.c:732 generic_shutdown_super+0xdb/0x210 fs/super.c:693 kill_block_super+0x2a/0x60 fs/super.c:1646 deactivate_locked_super+0x73/0x1c0 fs/super.c:481 deactivate_super+0x9b/0xb0 fs/super.c:514 cleanup_mnt+0x272/0x2e0 fs/namespace.c:1254 __cleanup_mnt+0x19/0x20 fs/namespace.c:1261 task_work_run+0x135/0x1a0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd6/0xe0 kernel/entry/common.c:171 exit_to_user_mode_prepare+0x6c/0xb0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888161fb1000 of 1024 bytes by task 3143 on cpu 0: instrument_copy_to_user include/linux/instrumented.h:113 [inline] copyout lib/iov_iter.c:167 [inline] _copy_to_iter+0x12b/0x950 lib/iov_iter.c:316 copy_page_to_iter+0x171/0x2b0 lib/iov_iter.c:481 copy_folio_to_iter include/linux/uio.h:185 [inline] filemap_read+0x424/0x680 mm/filemap.c:2703 blkdev_read_iter+0x217/0x2c0 block/fops.c:730 call_read_iter include/linux/fs.h:1950 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x3da/0x5c0 fs/read_write.c:470 ksys_read+0xeb/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+0x42/0x50 fs/read_write.c:621 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3143 Comm: udevd Not tainted 6.6.0-rc6-syzkaller-00182-gce55c22ec8b2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 ================================================================== I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 I/O error, dev loop5, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 I/O error, dev loop5, 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/10/20 07:25 | upstream | ce55c22ec8b2 | a42250d2 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state | ||
2023/10/17 04:40 | upstream | 213f891525c2 | 342b9c55 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state | ||
2023/09/30 19:01 | upstream | 9f3ebbef746f | 8e26a358 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state | ||
2023/09/28 19:58 | upstream | 9ed22ae6be81 | d265efd8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in _copy_to_iter / fat_set_state |