loop3: detected capacity change from 0 to 1030 ================================================================== BUG: KCSAN: data-race in has_bh_in_lru / invalidate_bh_lrus_cpu write to 0xffff888237c22f10 of 8 bytes by task 1765 on cpu 0: __invalidate_bh_lrus fs/buffer.c:1393 [inline] invalidate_bh_lrus_cpu+0xad/0xe0 fs/buffer.c:1434 lru_add_drain_cpu+0x243/0x270 mm/swap.c:645 lru_add_drain+0x28/0x40 mm/swap.c:724 madvise_free_single_vma mm/madvise.c:728 [inline] madvise_dontneed_free mm/madvise.c:822 [inline] madvise_vma mm/madvise.c:996 [inline] do_madvise+0x834/0x10a0 mm/madvise.c:1201 __do_sys_madvise mm/madvise.c:1227 [inline] __se_sys_madvise mm/madvise.c:1225 [inline] __x64_sys_madvise+0x5d/0x70 mm/madvise.c:1225 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 0xffff888237c22f10 of 8 bytes by task 14483 on cpu 1: has_bh_in_lru+0x31/0x1c0 fs/buffer.c:1415 smp_call_function_many_cond+0x226/0x620 kernel/smp.c:917 on_each_cpu_cond_mask+0x31/0x40 kernel/smp.c:1135 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x26/0x30 fs/buffer.c:1424 kill_bdev fs/block_dev.c:86 [inline] set_blocksize+0x242/0x270 fs/block_dev.c:167 sb_set_blocksize fs/block_dev.c:176 [inline] sb_min_blocksize+0x9d/0x120 fs/block_dev.c:192 ext4_fill_super+0x3a5/0x7810 fs/ext4/super.c:3918 mount_bdev+0x1e8/0x290 fs/super.c:1368 ext4_mount+0x2d/0x40 fs/ext4/super.c:6505 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610 vfs_get_tree+0x4a/0x1a0 fs/super.c:1498 do_new_mount fs/namespace.c:2987 [inline] path_mount+0x11ca/0x1d00 fs/namespace.c:3317 do_mount fs/namespace.c:3330 [inline] __do_sys_mount fs/namespace.c:3538 [inline] __se_sys_mount+0x23d/0x2e0 fs/namespace.c:3515 __x64_sys_mount+0x63/0x70 fs/namespace.c:3515 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: 0xffff888105be0a28 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 14483 Comm: syz-executor.3 Tainted: G W 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== EXT4-fs (loop3): invalid inodes per group: 458784