EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue ===================================================== BUG: KMSAN: uninit-value in qtree_entry_unused+0x137/0x1b0 fs/quota/quota_tree.c:218 CPU: 0 PID: 16176 Comm: syz-executor.1 Not tainted 5.9.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:122 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:201 qtree_entry_unused+0x137/0x1b0 fs/quota/quota_tree.c:218 v2r1_mem2diskdqb+0x43d/0x710 fs/quota/quota_v2.c:285 qtree_write_dquot+0x226/0x870 fs/quota/quota_tree.c:394 v2_write_dquot+0x1ad/0x280 fs/quota/quota_v2.c:333 dquot_acquire+0x46e/0x760 fs/quota/dquot.c:443 ext4_acquire_dquot+0x422/0x550 fs/ext4/super.c:5950 dqget+0x14be/0x1c50 fs/quota/dquot.c:901 __dquot_initialize+0x6d0/0x19e0 fs/quota/dquot.c:1479 dquot_initialize+0x4d/0x60 fs/quota/dquot.c:1537 ext4_xattr_set+0x14e/0x690 fs/ext4/xattr.c:2474 ext4_xattr_trusted_set+0xf3/0x110 fs/ext4/xattr_trusted.c:37 __vfs_setxattr+0x94f/0x9a0 fs/xattr.c:177 __vfs_setxattr_noperm+0x378/0xc90 fs/xattr.c:208 __vfs_setxattr_locked+0x5f2/0x6a0 fs/xattr.c:266 vfs_setxattr+0x1e4/0x4d0 fs/xattr.c:283 setxattr+0x43d/0x8f0 fs/xattr.c:548 path_setxattr+0x2cd/0x4f0 fs/xattr.c:567 __do_sys_setxattr fs/xattr.c:582 [inline] __se_sys_setxattr+0xee/0x110 fs/xattr.c:578 __ia32_sys_setxattr+0x62/0x80 fs/xattr.c:578 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline] __do_fast_syscall_32+0x129/0x180 arch/x86/entry/common.c:139 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:162 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:205 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f2d549 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f55270cc EFLAGS: 00000296 ORIG_RAX: 00000000000000e2 RAX: ffffffffffffffda RBX: 00000000200002c0 RCX: 0000000020000300 RDX: 0000000020000340 RSI: 0000000000000008 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:129 [inline] kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:112 kmsan_slab_alloc+0x8d/0xe0 mm/kmsan/kmsan_hooks.c:80 slab_alloc_node mm/slub.c:2903 [inline] slab_alloc mm/slub.c:2912 [inline] __kmalloc+0x282/0x490 mm/slub.c:3978 kmalloc include/linux/slab.h:559 [inline] getdqbuf+0x4e/0xe0 fs/quota/quota_tree.c:52 qtree_write_dquot+0xf2/0x870 fs/quota/quota_tree.c:378 v2_write_dquot+0x1ad/0x280 fs/quota/quota_v2.c:333 dquot_acquire+0x46e/0x760 fs/quota/dquot.c:443 ext4_acquire_dquot+0x422/0x550 fs/ext4/super.c:5950 dqget+0x14be/0x1c50 fs/quota/dquot.c:901 __dquot_initialize+0x6d0/0x19e0 fs/quota/dquot.c:1479 dquot_initialize+0x4d/0x60 fs/quota/dquot.c:1537 ext4_xattr_set+0x14e/0x690 fs/ext4/xattr.c:2474 ext4_xattr_trusted_set+0xf3/0x110 fs/ext4/xattr_trusted.c:37 __vfs_setxattr+0x94f/0x9a0 fs/xattr.c:177 __vfs_setxattr_noperm+0x378/0xc90 fs/xattr.c:208 __vfs_setxattr_locked+0x5f2/0x6a0 fs/xattr.c:266 vfs_setxattr+0x1e4/0x4d0 fs/xattr.c:283 setxattr+0x43d/0x8f0 fs/xattr.c:548 path_setxattr+0x2cd/0x4f0 fs/xattr.c:567 __do_sys_setxattr fs/xattr.c:582 [inline] __se_sys_setxattr+0xee/0x110 fs/xattr.c:578 __ia32_sys_setxattr+0x62/0x80 fs/xattr.c:578 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline] __do_fast_syscall_32+0x129/0x180 arch/x86/entry/common.c:139 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:162 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:205 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c =====================================================