================================================================== BUG: KASAN: user-memory-access in instrument_atomic_read include/linux/instrumented.h:68 [inline] BUG: KASAN: user-memory-access in atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline] BUG: KASAN: user-memory-access in jfs_statfs+0x257/0x550 fs/jfs/super.c:140 Read of size 4 at addr 00000000000050c0 by task syz.0.35/6762 CPU: 0 UID: 0 PID: 6762 Comm: syz.0.35 Not tainted 6.15.0-syzkaller-g0ff41df1cb26 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 kasan_report+0x118/0x150 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x29a/0x2b0 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:68 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline] jfs_statfs+0x257/0x550 fs/jfs/super.c:140 statfs_by_dentry fs/statfs.c:66 [inline] vfs_statfs+0x147/0x2d0 fs/statfs.c:90 user_statfs+0xb7/0x170 fs/statfs.c:105 __do_sys_statfs fs/statfs.c:193 [inline] __se_sys_statfs fs/statfs.c:190 [inline] __x64_sys_statfs+0xe0/0x1b0 fs/statfs.c:190 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f49cff75f19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f49cf1fe048 EFLAGS: 00000246 ORIG_RAX: 0000000000000089 RAX: ffffffffffffffda RBX: 00007f49d0106110 RCX: 00007f49cff75f19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200003c0 RBP: 00007f49cffe4e68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f49d0106110 R15: 00007ffc19759c88 ==================================================================