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================================================================== BUG: KCSAN: data-race in mark_buffer_dirty_inode / mark_buffer_dirty_inode write to 0xffff888120744740 of 8 bytes by task 11885 on cpu 1: mark_buffer_dirty_inode+0x18c/0x1b0 fs/buffer.c:585 fat16_ent_put+0x4b/0x50 fs/fat/fatent.c:183 fat_alloc_clusters+0x47d/0xa80 fs/fat/fatent.c:502 fat_add_cluster fs/fat/inode.c:108 [inline] __fat_get_block fs/fat/inode.c:155 [inline] fat_get_block+0x263/0x600 fs/fat/inode.c:190 __block_write_begin_int+0x33d/0xc90 fs/buffer.c:2006 __block_write_begin fs/buffer.c:2056 [inline] block_write_begin+0x77/0x170 fs/buffer.c:2117 cont_write_begin+0x3cf/0x500 fs/buffer.c:2463 fat_write_begin+0x61/0xf0 fs/fat/inode.c:235 generic_perform_write+0x1d6/0x3f0 mm/filemap.c:3787 __generic_file_write_iter+0xe3/0x280 mm/filemap.c:3915 generic_file_write_iter+0x75/0x130 mm/filemap.c:3947 do_iter_readv_writev+0x27b/0x300 do_iter_write+0x16f/0x5c0 fs/read_write.c:852 vfs_iter_write+0x4c/0x70 fs/read_write.c:893 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x80/0xa0 fs/splice.c:936 splice_direct_to_actor+0x345/0x660 fs/splice.c:891 do_splice_direct+0xfb/0x180 fs/splice.c:979 do_sendfile+0x3ad/0x900 fs/read_write.c:1246 __do_sys_sendfile64 fs/read_write.c:1305 [inline] __se_sys_sendfile64 fs/read_write.c:1297 [inline] __x64_sys_sendfile64+0xb9/0x150 fs/read_write.c:1297 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+0x44/0xae read to 0xffff888120744740 of 8 bytes by task 11889 on cpu 0: mark_buffer_dirty_inode+0x92/0x1b0 fs/buffer.c:581 fat16_ent_put+0x4b/0x50 fs/fat/fatent.c:183 fat_ent_write+0x5e/0xd0 fs/fat/fatent.c:416 fat_chain_add+0x15b/0x410 fs/fat/misc.c:130 fat_add_cluster fs/fat/inode.c:113 [inline] __fat_get_block fs/fat/inode.c:155 [inline] fat_get_block+0x486/0x600 fs/fat/inode.c:190 __block_write_begin_int+0x33d/0xc90 fs/buffer.c:2006 __block_write_begin fs/buffer.c:2056 [inline] block_write_begin+0x77/0x170 fs/buffer.c:2117 cont_write_begin+0x3cf/0x500 fs/buffer.c:2463 fat_write_begin+0x61/0xf0 fs/fat/inode.c:235 generic_perform_write+0x1d6/0x3f0 mm/filemap.c:3787 __generic_file_write_iter+0x172/0x280 mm/filemap.c:3883 generic_file_write_iter+0x75/0x130 mm/filemap.c:3947 do_iter_readv_writev+0x27b/0x300 do_iter_write+0x16f/0x5c0 fs/read_write.c:852 vfs_iter_write+0x4c/0x70 fs/read_write.c:893 iter_file_splice_write+0x44a/0x7c0 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x80/0xa0 fs/splice.c:936 splice_direct_to_actor+0x345/0x660 fs/splice.c:891 do_splice_direct+0xfb/0x180 fs/splice.c:979 do_sendfile+0x3ad/0x900 fs/read_write.c:1246 __do_sys_sendfile64 fs/read_write.c:1311 [inline] __se_sys_sendfile64 fs/read_write.c:1297 [inline] __x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1297 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+0x44/0xae value changed: 0x0000000000000000 -> 0xffff8881205c0530 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11889 Comm: syz-executor.3 Not tainted 5.18.0-rc4-syzkaller-00396-g57ae8a492116-dirty #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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/04/30 23:19 | upstream | 57ae8a492116 | 2df221f6 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in mark_buffer_dirty_inode / mark_buffer_dirty_inode | |||
2022/04/23 19:03 | upstream | 13bc32bad705 | 131df97d | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in mark_buffer_dirty_inode / mark_buffer_dirty_inode | |||
2022/04/21 16:37 | upstream | b253435746d9 | 2738b391 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in mark_buffer_dirty_inode / mark_buffer_dirty_inode | |||
2022/04/19 19:06 | upstream | b7f73403a3e9 | 33fc6ed6 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in mark_buffer_dirty_inode / mark_buffer_dirty_inode | |||
2022/04/06 09:57 | upstream | 3e732ebf7316 | 86b4b7f8 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in mark_buffer_dirty_inode / mark_buffer_dirty_inode | |||
2022/03/13 07:42 | upstream | aad611a868d1 | 9e8eaa75 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in mark_buffer_dirty_inode / mark_buffer_dirty_inode |