F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
==================================================================
BUG: KASAN: use-after-free in string_nocheck lib/vsprintf.c:641 [inline]
BUG: KASAN: use-after-free in string+0x20f/0x2a0 lib/vsprintf.c:723
Read of size 1 at addr ffff888101da6730 by task syz.0.587/2561

CPU: 1 PID: 2561 Comm: syz.0.587 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x100/0x140 mm/kasan/report.c:452
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306
 string_nocheck lib/vsprintf.c:641 [inline]
 string+0x20f/0x2a0 lib/vsprintf.c:723
 vsnprintf+0xec5/0x1990 lib/vsprintf.c:2689
 seq_vprintf fs/seq_file.c:398 [inline]
 seq_printf+0x185/0x280 fs/seq_file.c:413
 show_interrupts+0x921/0xa90 kernel/irq/proc.c:526
 seq_read_iter+0x908/0xce0 fs/seq_file.c:272
 proc_reg_read_iter+0x1be/0x290 fs/proc/inode.c:310
 call_read_iter include/linux/fs.h:2066 [inline]
 new_sync_read fs/read_write.c:415 [inline]
 vfs_read+0x62a/0xa50 fs/read_write.c:496
 ksys_read+0x14a/0x260 fs/read_write.c:634
 __do_sys_read fs/read_write.c:644 [inline]
 __se_sys_read fs/read_write.c:642 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:642
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f89d3bae159
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:00007f89d2607028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f89d3e35fa0 RCX: 00007f89d3bae159
RDX: 0000000000002020 RSI: 00002000000043c0 RDI: 0000000000000007
RBP: 00007f89d3c4506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f89d3e36038 R14: 00007f89d3e35fa0 R15: 00007fff4e8c5978

Allocated by task 0:
(stack is not available)

Freed by task 2216:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1600 [inline]
 slab_free_freelist_hook+0xc5/0x190 mm/slub.c:1626
 slab_free mm/slub.c:3208 [inline]
 kfree+0xc0/0x270 mm/slub.c:4196
 uart_remove_one_port+0x3b8/0x780 drivers/tty/serial/serial_core.c:3104
 serial8250_unregister_port+0xad/0x260 drivers/tty/serial/8250/8250_core.c:1156
 serial_pnp_remove+0x6b/0x90 drivers/tty/serial/8250/8250_pnp.c:498
 pnp_device_remove+0x75/0x250 drivers/pnp/driver.c:131
 __device_release_driver drivers/base/dd.c:-1 [inline]
 device_release_driver_internal+0x531/0x7c0 drivers/base/dd.c:1221
 device_driver_detach+0x3b/0x40 drivers/base/dd.c:1257
 unbind_store+0x2e5/0x300 drivers/base/bus.c:193
 drv_attr_store+0x79/0xa0 drivers/base/bus.c:77
 sysfs_kf_write+0x129/0x150 fs/sysfs/file.c:143
 kernfs_fop_write_iter+0x2bd/0x400 fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:2072 [inline]
 new_sync_write fs/read_write.c:518 [inline]
 vfs_write+0x770/0xd70 fs/read_write.c:605
 ksys_write+0x14a/0x260 fs/read_write.c:658
 __do_sys_write fs/read_write.c:670 [inline]
 __se_sys_write fs/read_write.c:667 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:667
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff888101da6730
 which belongs to the cache kmalloc-8 of size 8
The buggy address is located 0 bytes inside of
 8-byte region [ffff888101da6730, ffff888101da6738)
The buggy address belongs to the page:
page:ffffea0004076980 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101da6
flags: 0x4000000000000200(slab)
raw: 4000000000000200 ffffea000412e940 0000000700000007 ffff888100043c80
raw: 0000000000000000 0000000000660066 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 2203840828, free_ts 0
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x176/0x190 mm/page_alloc.c:2462
 get_page_from_freelist+0x225f/0x23f0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x29a/0x640 mm/page_alloc.c:5384
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1813 [inline]
 new_slab+0x84/0x3f0 mm/slub.c:1874
 new_slab_objects mm/slub.c:2632 [inline]
 ___slab_alloc+0x2f8/0x4c0 mm/slub.c:2796
 __slab_alloc+0x63/0xa0 mm/slub.c:2836
 slab_alloc_node mm/slub.c:2918 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 __kmalloc+0x1f9/0x330 mm/slub.c:4034
 kmalloc include/linux/slab.h:560 [inline]
 acpi_os_allocate include/acpi/platform/aclinuxex.h:52 [inline]
 acpi_ex_allocate_name_string drivers/acpi/acpica/exnames.c:66 [inline]
 acpi_ex_get_name_string+0x5a9/0xca0 drivers/acpi/acpica/exnames.c:367
 acpi_ds_create_operand+0x168/0x8b0 drivers/acpi/acpica/dsutils.c:446
 acpi_ds_evaluate_name_path+0x15a/0x420 drivers/acpi/acpica/dsutils.c:778
 acpi_ds_exec_end_op+0x255/0x1190 drivers/acpi/acpica/dswexec.c:374
 acpi_ps_parse_loop+0xbff/0x19f0 drivers/acpi/acpica/psloop.c:526
 acpi_ps_parse_aml+0x214/0x9a0 drivers/acpi/acpica/psparse.c:475
 acpi_ps_execute_method+0x681/0x7b0 drivers/acpi/acpica/psxface.c:190
 acpi_ns_evaluate+0x650/0xa20 drivers/acpi/acpica/nseval.c:205
 acpi_ut_evaluate_object+0x12f/0x480 drivers/acpi/acpica/uteval.c:60
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888101da6600: fc fc fc 00 fc fc fc fc 00 fc fc fc fc fa fc fc
 ffff888101da6680: fc fc 00 fc fc fc fc fa fc fc fc fc 00 fc fc fc
>ffff888101da6700: fc fa fc fc fc fc fa fc fc fc fc 00 fc fc fc fc
                                     ^
 ffff888101da6780: 00 fc fc fc fc fa fc fc fc fc 00 fc fc fc fc 00
 ffff888101da6800: fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc
==================================================================