EXT4-fs: Ignoring removed mblk_io_submit option EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x1a71/0x21d0 fs/ext4/xattr.c:1687 Read of size 18446744073709550592 at addr ffff88810972bc00 by task syz.0.461/1880 CPU: 0 PID: 1880 Comm: syz.0.461 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Call Trace: __dump_stack+0x21/0x24 lib/dump_stack.c:88 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106 print_address_description+0x71/0x200 mm/kasan/report.c:316 print_report+0x4a/0x60 mm/kasan/report.c:420 kasan_report+0x122/0x150 mm/kasan/report.c:524 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189 memmove+0x2d/0x70 mm/kasan/shadow.c:54 ext4_xattr_set_entry+0x1a71/0x21d0 fs/ext4/xattr.c:1687 ext4_xattr_block_set+0xad3/0x3260 fs/ext4/xattr.c:1977 ext4_xattr_set_handle+0xe3b/0x1570 fs/ext4/xattr.c:2399 ext4_xattr_set+0x242/0x320 fs/ext4/xattr.c:2501 ext4_xattr_trusted_set+0x3c/0x50 fs/ext4/xattr_trusted.c:38 __vfs_setxattr+0x3f2/0x440 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 __vfs_setxattr_locked+0x212/0x230 fs/xattr.c:277 vfs_setxattr+0x167/0x2e0 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x346/0x360 fs/xattr.c:617 path_setxattr+0x147/0x290 fs/xattr.c:636 __do_sys_lsetxattr fs/xattr.c:659 [inline] __se_sys_lsetxattr fs/xattr.c:655 [inline] __x64_sys_lsetxattr+0xc2/0xe0 fs/xattr.c:655 x64_sys_call+0x8b7/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:190 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f2e6719cdd9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2e68080028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007f2e67415fa0 RCX: 00007f2e6719cdd9 RDX: 00002000000006c0 RSI: 0000200000000100 RDI: 0000200000000040 RBP: 00007f2e67232d69 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000fe37 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2e67416038 R14: 00007f2e67415fa0 R15: 00007ffebf1f3ad8 Allocated by task 1880: kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:53 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:380 [inline] __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h:212 [inline] __do_kmalloc_node mm/slab_common.c:938 [inline] __kmalloc_node_track_caller+0xb1/0x1e0 mm/slab_common.c:958 kmemdup+0x2b/0x60 mm/util.c:134 kmemdup include/linux/fortify-string.h:585 [inline] ext4_xattr_block_set+0x9d5/0x3260 fs/ext4/xattr.c:1925 ext4_xattr_set_handle+0xe3b/0x1570 fs/ext4/xattr.c:2399 ext4_xattr_set+0x242/0x320 fs/ext4/xattr.c:2501 ext4_xattr_trusted_set+0x3c/0x50 fs/ext4/xattr_trusted.c:38 __vfs_setxattr+0x3f2/0x440 fs/xattr.c:182 __vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216 __vfs_setxattr_locked+0x212/0x230 fs/xattr.c:277 vfs_setxattr+0x167/0x2e0 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x346/0x360 fs/xattr.c:617 path_setxattr+0x147/0x290 fs/xattr.c:636 __do_sys_lsetxattr fs/xattr.c:659 [inline] __se_sys_lsetxattr fs/xattr.c:655 [inline] __x64_sys_lsetxattr+0xc2/0xe0 fs/xattr.c:655 x64_sys_call+0x8b7/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:190 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Last potentially related work creation: kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496 __call_rcu_common kernel/rcu/tree.c:2807 [inline] call_rcu+0xcf/0xf90 kernel/rcu/tree.c:2926 __qdisc_destroy+0x187/0x290 net/sched/sch_generic.c:1083 qdisc_put net/sched/sch_generic.c:1103 [inline] shutdown_scheduler_queue net/sched/sch_generic.c:1156 [inline] netdev_for_each_tx_queue include/linux/netdevice.h:2504 [inline] dev_shutdown+0x198/0x580 net/sched/sch_generic.c:1461 unregister_netdevice_many+0x9a6/0x18e0 net/core/dev.c:10984 unregister_netdevice_queue+0x324/0x370 net/core/dev.c:10924 unregister_netdevice include/linux/netdevice.h:3109 [inline] __tun_detach+0xca6/0x1460 drivers/net/tun.c:685 tun_detach drivers/net/tun.c:701 [inline] tun_chr_close+0x92/0x140 drivers/net/tun.c:3492 __fput+0x1fc/0x8f0 fs/file_table.c:320 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x1e1/0x250 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff88810972b800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 0 bytes to the right of 1024-byte region [ffff88810972b800, ffff88810972bc00) The buggy address belongs to the physical page: page:ffffea000425ca00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109728 head:ffffea000425ca00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 ffffea0004c3a600 dead000000000002 ffff888100043080 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 1986784646, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672 prep_new_page+0x1c/0x110 mm/page_alloc.c:2679 get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4585 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5926 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1 allocate_slab mm/slub.c:1967 [inline] new_slab+0x98/0x3d0 mm/slub.c:2020 ___slab_alloc+0x6bd/0xb20 mm/slub.c:3177 __slab_alloc+0x5e/0xa0 mm/slub.c:3263 slab_alloc_node mm/slub.c:3348 [inline] __kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423 kmalloc_trace+0x29/0xb0 mm/slab_common.c:1028 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:699 [inline] __class_register+0x56/0x430 drivers/base/class.c:160 __class_create+0xc2/0x110 drivers/base/class.c:247 ptp_init+0x1f/0xdc drivers/ptp/ptp_clock.c:488 do_one_initcall+0x1d6/0x580 init/main.c:1433 do_initcall_level+0x16f/0x2d0 init/main.c:1506 do_initcalls+0x50/0x92 init/main.c:1522 page_owner free stack trace missing Memory state around the buggy address: ffff88810972bb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88810972bb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88810972bc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88810972bc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88810972bd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== EXT4-fs error (device loop0): ext4_xattr_inode_iget:401: comm syz.0.461: inode #1717986918: comm syz.0.461: iget: illegal inode # EXT4-fs error (device loop0): ext4_xattr_inode_iget:406: comm syz.0.461: error while reading EA inode 1717986918 err=-117