EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
------------[ cut here ]------------
field width -1093429495 out of range
WARNING: lib/vsprintf.c:2650 at set_field_width lib/vsprintf.c:2650 [inline], CPU#0: syz.2.663/8524
WARNING: lib/vsprintf.c:2650 at vsnprintf+0xb9c/0xd10 lib/vsprintf.c:2914, CPU#0: syz.2.663/8524
Modules linked in:
CPU: 0 UID: 0 PID: 8524 Comm: syz.2.663 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : set_field_width lib/vsprintf.c:2650 [inline]
pc : vsnprintf+0xb9c/0xd10 lib/vsprintf.c:2914
lr : set_field_width lib/vsprintf.c:2650 [inline]
lr : vsnprintf+0xb9c/0xd10 lib/vsprintf.c:2914
sp : ffff800092fe6b10
x29: ffff800092fe6b60 x28: 00000000ff800001 x27: ffff800087471e82
x26: 00000000bed39709 x25: ffff800092fe6bd8 x24: 0000000000000402
x23: ffff800092fe6f17 x22: ffff800087b3ed00 x21: ffff800092fe6bf0
x20: ffff800092fe6ecb x19: dfff800000000000 x18: 0000000000000000
x17: ffff800083a4bc80 x16: ffff800083a66698 x15: 0000000020000340
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000080000 x9 : 48bcde75dd1e7000
x8 : 48bcde75dd1e7000 x7 : ffff80008048c5b8 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000802f6830
x2 : 0000000100000000 x1 : ffff0000cbc19d40 x0 : 0000000000000001
Call trace:
 set_field_width lib/vsprintf.c:2650 [inline] (P)
 vsnprintf+0xb9c/0xd10 lib/vsprintf.c:2914 (P)
 va_format lib/vsprintf.c:1725 [inline]
 pointer+0x5e8/0x6b4 lib/vsprintf.c:2573
 vsnprintf+0x618/0xd10 lib/vsprintf.c:2949
 vprintk_store+0x344/0xb94 kernel/printk/printk.c:2307
 vprintk_emit+0x1bc/0x514 kernel/printk/printk.c:2455
 dev_vprintk_emit+0x2ec/0x3b4 drivers/base/core.c:4996
 dev_printk_emit+0xe0/0x130 drivers/base/core.c:5007
 __dynamic_dev_dbg+0x1b4/0x254 lib/dynamic_debug.c:904
 dtv_property_process_get+0x26bc/0x2838 drivers/media/dvb-core/dvb_frontend.c:1594
 dvb_get_property drivers/media/dvb-core/dvb_frontend.c:2396 [inline]
 dvb_frontend_handle_ioctl+0x1644/0x2424 drivers/media/dvb-core/dvb_frontend.c:2477
 dvb_frontend_do_ioctl+0x124/0x278 drivers/media/dvb-core/dvb_frontend.c:2100
 dvb_usercopy+0x2a4/0x4d4 drivers/media/dvb-core/dvbdev.c:996
 dvb_frontend_ioctl+0x68/0x8c drivers/media/dvb-core/dvb_frontend.c:2114
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __arm64_sys_ioctl+0x154/0x1cc fs/ioctl.c:583
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
irq event stamp: 7416
hardirqs last  enabled at (7415): [<ffff80008690f4e0>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline]
hardirqs last  enabled at (7415): [<ffff80008690f4e0>] __arm64_exit_to_kernel_mode+0x64/0x78 arch/arm64/kernel/entry-common.c:60
hardirqs last disabled at (7416): [<ffff80008048f368>] vprintk_store+0x13c/0xb94 kernel/printk/printk.c:2287
softirqs last  enabled at (7366): [<ffff80008013b050>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (7366): [<ffff80008013b050>] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline]
softirqs last  enabled at (7366): [<ffff80008013b050>] fpsimd_restore_current_state+0x39c/0x9c8 arch/arm64/kernel/fpsimd.c:1797
softirqs last disabled at (7364): [<ffff80008013acf8>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (7364): [<ffff80008013acf8>] get_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:234 [inline]
softirqs last disabled at (7364): [<ffff80008013acf8>] fpsimd_restore_current_state+0x44/0x9c8 arch/arm64/kernel/fpsimd.c:1790
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: slab-out-of-bounds in hex_string+0x274/0x364 lib/vsprintf.c:1209
Read of size 1 at addr ffff0000c94c4130 by task syz.2.663/8524

CPU: 0 UID: 0 PID: 8524 Comm: syz.2.663 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xb0/0x238 mm/kasan/report.c:378
 print_report+0x68/0x84 mm/kasan/report.c:482
 kasan_report+0x8c/0xc4 mm/kasan/report.c:595
 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378
 hex_string+0x274/0x364 lib/vsprintf.c:1209
 pointer+0x1a8/0x6b4 lib/vsprintf.c:2544
 vsnprintf+0x618/0xd10 lib/vsprintf.c:2949
 va_format lib/vsprintf.c:1725 [inline]
 pointer+0x5e8/0x6b4 lib/vsprintf.c:2573
 vsnprintf+0x618/0xd10 lib/vsprintf.c:2949
 vscnprintf+0x6c/0xd4 lib/vsprintf.c:3014
 printk_sprint+0xc0/0x774 kernel/printk/printk.c:2222
 vprintk_store+0x714/0xb94 kernel/printk/printk.c:2364
 vprintk_emit+0x1bc/0x514 kernel/printk/printk.c:2455
 dev_vprintk_emit+0x2ec/0x3b4 drivers/base/core.c:4996
 dev_printk_emit+0xe0/0x130 drivers/base/core.c:5007
 __dynamic_dev_dbg+0x1b4/0x254 lib/dynamic_debug.c:904
 dtv_property_process_get+0x26bc/0x2838 drivers/media/dvb-core/dvb_frontend.c:1594
 dvb_get_property drivers/media/dvb-core/dvb_frontend.c:2396 [inline]
 dvb_frontend_handle_ioctl+0x1644/0x2424 drivers/media/dvb-core/dvb_frontend.c:2477
 dvb_frontend_do_ioctl+0x124/0x278 drivers/media/dvb-core/dvb_frontend.c:2100
 dvb_usercopy+0x2a4/0x4d4 drivers/media/dvb-core/dvbdev.c:996
 dvb_frontend_ioctl+0x68/0x8c drivers/media/dvb-core/dvb_frontend.c:2114
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __arm64_sys_ioctl+0x154/0x1cc fs/ioctl.c:583
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590

Allocated by task 8524:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:78
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:570
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0x9c/0xb4 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __do_kmalloc_node mm/slub.c:5334 [inline]
 __kmalloc_node_track_caller_noprof+0x434/0x6d4 mm/slub.c:5471
 memdup_user+0x44/0xec mm/util.c:221
 memdup_array_user include/linux/string.h:39 [inline]
 dvb_get_property drivers/media/dvb-core/dvb_frontend.c:2379 [inline]
 dvb_frontend_handle_ioctl+0xb8c/0x2424 drivers/media/dvb-core/dvb_frontend.c:2477
 dvb_frontend_do_ioctl+0x124/0x278 drivers/media/dvb-core/dvb_frontend.c:2100
 dvb_usercopy+0x2a4/0x4d4 drivers/media/dvb-core/dvbdev.c:996
 dvb_frontend_ioctl+0x68/0x8c drivers/media/dvb-core/dvb_frontend.c:2114
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __arm64_sys_ioctl+0x154/0x1cc fs/ioctl.c:583
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590

The buggy address belongs to the object at ffff0000c94c4000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes to the right of
 allocated 304-byte region [ffff0000c94c4000, ffff0000c94c4130)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1094c4
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000040 ffff0000c0001c80 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000
head: 05ffc00000000040 ffff0000c0001c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000
head: 05ffc00000000002 fffffdffc3253101 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000c94c4000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000c94c4080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000c94c4100: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
                                     ^
 ffff0000c94c4180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000c94c4200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
EXT4-fs error (device loop2): ext4_acquire_dquot:7041: comm syz.2.663: Failed to acquire dquot type 0
EXT4-fs (loop2): Remounting filesystem read-only