| Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|
| upstream | KCSAN: data-race in ext4_mb_good_group / mb_set_largest_free_order ext4 | 1 | 1023d | 1023d | 0/26 | auto-closed as invalid on 2021/08/10 11:15 |
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| Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|
| upstream | KCSAN: data-race in ext4_mb_good_group / mb_set_largest_free_order ext4 | 1 | 1023d | 1023d | 0/26 | auto-closed as invalid on 2021/08/10 11:15 |
================================================================== BUG: KCSAN: data-race in ext4_mb_good_group / mb_set_largest_free_order write to 0xffff888101cdb01c of 4 bytes by task 7570 on cpu 0: mb_set_largest_free_order+0x159/0x330 fs/ext4/mballoc.c:1084 mb_mark_used+0xac0/0xc50 fs/ext4/mballoc.c:1992 ext4_mb_use_best_found+0x102/0x320 fs/ext4/mballoc.c:2015 ext4_mb_try_best_found+0x234/0x3d0 fs/ext4/mballoc.c:2181 ext4_mb_regular_allocator+0x22bd/0x2520 fs/ext4/mballoc.c:2779 ext4_mb_new_blocks+0x762/0x1f90 fs/ext4/mballoc.c:5515 ext4_ext_map_blocks+0x1569/0x1f00 fs/ext4/extents.c:4245 ext4_map_blocks+0x70d/0xef0 fs/ext4/inode.c:638 ext4_alloc_file_blocks+0x271/0x720 fs/ext4/extents.c:4432 ext4_fallocate+0x2a7/0x4d0 fs/ext4/extents.c:4713 vfs_fallocate+0x459/0x6a0 fs/open.c:307 ksys_fallocate fs/open.c:330 [inline] __do_sys_fallocate fs/open.c:338 [inline] __se_sys_fallocate fs/open.c:336 [inline] __x64_sys_fallocate+0x75/0xc0 fs/open.c:336 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888101cdb01c of 4 bytes by task 7573 on cpu 1: ext4_mb_good_group+0x30f/0x370 fs/ext4/mballoc.c:2452 ext4_mb_good_group_nolock fs/ext4/mballoc.c:2529 [inline] ext4_mb_regular_allocator+0x1600/0x2520 fs/ext4/mballoc.c:2729 ext4_mb_new_blocks+0x762/0x1f90 fs/ext4/mballoc.c:5515 ext4_ext_map_blocks+0x1569/0x1f00 fs/ext4/extents.c:4245 ext4_map_blocks+0x70d/0xef0 fs/ext4/inode.c:638 ext4_alloc_file_blocks+0x271/0x720 fs/ext4/extents.c:4432 ext4_fallocate+0x2a7/0x4d0 fs/ext4/extents.c:4713 vfs_fallocate+0x459/0x6a0 fs/open.c:307 ksys_fallocate fs/open.c:330 [inline] __do_sys_fallocate fs/open.c:338 [inline] __se_sys_fallocate fs/open.c:336 [inline] __x64_sys_fallocate+0x75/0xc0 fs/open.c:336 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0000000a -> 0xffffffff Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7573 Comm: syz-executor.2 Not tainted 5.14.0-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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/09/02 17:04 | upstream | 4ac6d90867a4 | d0f0970b | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in ext4_mb_good_group / mb_set_largest_free_order | |||
| 2021/08/31 14:43 | upstream | b91db6a0b52e | 7eb7e152 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in ext4_mb_good_group / mb_set_largest_free_order | |||
| 2021/08/21 08:04 | upstream | fa54d366a6e4 | b599f2fc | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in ext4_mb_good_group / mb_set_largest_free_order | |||
| 2021/08/15 19:40 | upstream | ecf93431963a | 2489ab88 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in ext4_mb_good_group / mb_set_largest_free_order |