00000000e40c705f: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ================================================================== BUG: KASAN: slab-out-of-bounds in hex_dump_to_buffer+0x5dc/0x984 lib/hexdump.c:193 Read of size 1 at addr ffff0000df639200 by task syz-executor.3/6412 CPU: 0 PID: 6412 Comm: syz-executor.3 Not tainted 5.15.157-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_load1_noabort+0x44/0x50 mm/kasan/report_generic.c:306 hex_dump_to_buffer+0x5dc/0x984 lib/hexdump.c:193 print_hex_dump+0x140/0x248 lib/hexdump.c:276 ea_get+0xa04/0xef0 fs/jfs/xattr.c:561 __jfs_setxattr+0xe0/0x13ac fs/jfs/xattr.c:671 __jfs_xattr_set+0xf8/0x190 fs/jfs/xattr.c:917 jfs_xattr_set+0x58/0x70 fs/jfs/xattr.c:941 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x250/0x2b4 fs/xattr.c:611 path_setxattr+0x17c/0x258 fs/xattr.c:630 __do_sys_lsetxattr fs/xattr.c:653 [inline] __se_sys_lsetxattr fs/xattr.c:649 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:649 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 6412: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8c/0xcc mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x74/0x3f4 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x1dc/0x45c mm/slub.c:3233 jfs_alloc_inode+0x24/0x60 fs/jfs/super.c:105 alloc_inode fs/inode.c:236 [inline] iget_locked+0x180/0x720 fs/inode.c:1244 jfs_iget+0x30/0x364 fs/jfs/inode.c:29 jfs_lookup+0x1e8/0x39c fs/jfs/namei.c:1467 __lookup_slow+0x250/0x388 fs/namei.c:1663 lookup_slow+0x60/0x84 fs/namei.c:1680 walk_component+0x394/0x4cc fs/namei.c:1976 lookup_last fs/namei.c:2431 [inline] path_lookupat+0x13c/0x3d0 fs/namei.c:2455 filename_lookup+0x1c4/0x4c8 fs/namei.c:2484 user_path_at_empty+0x5c/0x1a4 fs/namei.c:2883 user_path_at include/linux/namei.h:57 [inline] path_setxattr+0xbc/0x258 fs/xattr.c:625 __do_sys_lsetxattr fs/xattr.c:653 [inline] __se_sys_lsetxattr fs/xattr.c:649 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:649 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x118/0xb40 kernel/rcu/tree.c:3087 destroy_inode fs/inode.c:291 [inline] evict+0x5fc/0x68c fs/inode.c:602 dispose_list fs/inode.c:620 [inline] evict_inodes+0x6b4/0x74c fs/inode.c:670 generic_shutdown_super+0x9c/0x29c fs/super.c:454 kill_block_super+0x70/0xdc fs/super.c:1414 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Second to last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x118/0xb40 kernel/rcu/tree.c:3087 destroy_inode fs/inode.c:291 [inline] evict+0x5fc/0x68c fs/inode.c:602 iput_final fs/inode.c:1705 [inline] iput+0x744/0x824 fs/inode.c:1731 jfs_put_super+0x13c/0x188 fs/jfs/super.c:201 generic_shutdown_super+0x130/0x29c fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1414 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff0000df638940 which belongs to the cache jfs_ip of size 2240 The buggy address is located 0 bytes to the right of 2240-byte region [ffff0000df638940, ffff0000df639200) The buggy address belongs to the page: page:00000000b42dd35b refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000df63c0c0 pfn:0x11f638 head:00000000b42dd35b order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000ea4f0e01 flags: 0x5ffe00000010200(slab|head|node=0|zone=2|lastcpupid=0xfff) raw: 05ffe00000010200 0000000000000000 dead000000000122 ffff0000c663b500 raw: ffff0000df63c0c0 00000000800d000c 00000001ffffffff ffff0000ea4f0e01 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000df639100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000df639180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff0000df639200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000df639280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000df639300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== 0000000090bee7fc: 80 92 63 df 00 00 ff ff 0c 19 00 00 06 04 e0 a1 ..c............. 00000000f98d702d: 20 03 e0 f6 21 03 a0 ce c8 2a ad e7 00 00 ff ff ...!....*...... 00000000efd625f4: 0e 00 00 00 21 03 40 d7 00 00 00 00 00 00 00 00 ....!.@......... 0000000026f6bda6: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000003f2a2b5a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000005044ab58: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000b78b97c4: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000c8323ccc: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000005cba2db9: 01 00 00 00 00 80 01 00 00 00 00 00 00 00 00 00 ................ 00000000499f70a2: 04 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00 ................ 000000008915fca5: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000009a61256a: 00 00 00 00 00 00 00 00 f0 f1 7c 63 00 00 00 00 ..........|c.... 000000008d945365: 02 00 00 00 00 00 00 00 01 00 02 00 00 00 00 00 ................ 0000000059c3aae0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 000000004011340e: 00 00 00 00 00 00 00 00 00 00 00 ff 00 00 00 00 ................ 000000002291a7fb: 00 00 00 00 00 00 00 00 00 00 00 00 ad 4e ad de .............N.. 0000000051f4ea8f: ff ff ff ff 00 00 00 00 ff ff ff ff ff ff ff ff ................ 00000000fa0c61bd: 00 39 58 18 00 80 ff ff 00 dc 0a 17 00 80 ff ff .9X............. 000000008c6cfd61: 00 00 00 00 00 00 00 00 a0 a6 e2 11 00 80 ff ff ................ 00000000514e5475: 00 02 00 00 00 00 00 00 38 93 63 df 00 00 ff ff ........8.c..... 000000008cfcdad3: 38 93 63 df 00 00 ff ff 00 00 00 00 00 00 00 00 8.c............. 00000000aa19352b: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000c51dde4f: 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... 00000000f8332759: ff ff ff ff ff ff ff ff b0 54 f5 16 00 80 ff ff .........T...... 0000000090c8f974: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000070f3fbe: 20 a0 ae 11 00 80 ff ff 00 02 00 00 00 00 00 00 ...............