program:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x446, &(0x7f0000000080)={[{@stripe={'stripe', 0x3d, 0x2}}, {@journal_dev={'journal_dev', 0x3d, 0x1045}}, {@oldalloc}, {@noquota}, {@minixdf}, {@barrier_val={'barrier', 0x3d, 0x2}}, {@delalloc}, {@nojournal_checksum}, {@orlov}, {@user_xattr}, {@quota}, {@delalloc}]}, 0x1, 0x553, &(0x7f0000001080)="$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")
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0x1, 0x8000c61)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\x00', 0x42, 0x10)
mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x27ffff7, 0x4012011, r1, 0x0)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x35)
pwrite64(r2, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
setxattr$trusted_overlay_upper(&(0x7f0000000000)='./file1\x00', &(0x7f0000000500), &(0x7f0000000200)=ANY=[@ANYRES8=r2, @ANYBLOB="ae0644faa2a82a30b9594d73b9c24614ec1ab8d04020c6acce234da493873219", @ANYRES8=r1, @ANYRES16=r1, @ANYRESDEC=r2, @ANYRESDEC=r2, @ANYRESOCT=r2], 0x841, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x42, 0x0)
write$FUSE_WRITE(r3, &(0x7f00000000c0)={0x18}, 0xfffffdef)
[ 84.808038][ T4688] Bluetooth: hci0: command tx timeout
[ 84.904396][ T5346] loop0: detected capacity change from 0 to 1024
[ 84.950962][ T5346] =======================================================
[ 84.950962][ T5346] WARNING: The mand mount option has been deprecated and
[ 84.950962][ T5346] and is ignored by this kernel. Remove the mand
[ 84.950962][ T5346] option from the mount to silence this warning.
[ 84.950962][ T5346] =======================================================
[ 85.025179][ T5346] EXT4-fs: Ignoring removed oldalloc option
[ 85.028509][ T5346] EXT4-fs: Ignoring removed orlov option
[ 85.046053][ T5346] EXT4-fs (loop0): stripe (2) is not aligned with cluster size (16), stripe is disabled
[ 85.106718][ T5346] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 85.185898][ T5346] ==================================================================
[ 85.189327][ T5346] BUG: KASAN: use-after-free in ext4_find_extent+0xae6/0xcc0
[ 85.192548][ T5346] Read of size 4 at addr ffff888055a18c30 by task syz.0.0/5346
[ 85.195655][ T5346]
[ 85.196737][ T5346] CPU: 0 UID: 0 PID: 5346 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 85.196752][ T5346] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 85.196761][ T5346] Call Trace:
[ 85.196768][ T5346]
[ 85.196774][ T5346] dump_stack_lvl+0xe8/0x150
[ 85.196791][ T5346] print_report+0xca/0x240
[ 85.196804][ T5346] ? ext4_find_extent+0xae6/0xcc0
[ 85.196819][ T5346] kasan_report+0x118/0x150
[ 85.196829][ T5346] ? ext4_find_extent+0xae6/0xcc0
[ 85.196844][ T5346] ext4_find_extent+0xae6/0xcc0
[ 85.196856][ T5346] ext4_ext_map_blocks+0x278/0x69c0
[ 85.196877][ T5346] ? ext4_map_blocks+0x73f/0x16f0
[ 85.196888][ T5346] ? __pfx_ext4_ext_map_blocks+0x10/0x10
[ 85.196905][ T5346] ? ext4_es_lookup_extent+0x6cd/0xb00
[ 85.196918][ T5346] ext4_map_blocks+0x82c/0x16f0
[ 85.196929][ T5346] ? kasan_save_track+0x4f/0x80
[ 85.196944][ T5346] ? __pfx_ext4_map_blocks+0x10/0x10
[ 85.196954][ T5346] ? ext4_da_write_begin+0x352/0xd30
[ 85.196969][ T5346] ? obj_cgroup_charge_account+0x13b/0x650
[ 85.196987][ T5346] _ext4_get_block+0x1fa/0x4c0
[ 85.196998][ T5346] ? __pfx__ext4_get_block+0x10/0x10
[ 85.197011][ T5346] ext4_get_block_unwritten+0x2e/0x100
[ 85.197022][ T5346] ext4_block_write_begin+0xb03/0x1940
[ 85.197037][ T5346] ? __pfx_ext4_get_block_unwritten+0x10/0x10
[ 85.197047][ T5346] ? __pfx_ext4_block_write_begin+0x10/0x10
[ 85.197059][ T5346] ? folio_mapping+0x16f/0x1f0
[ 85.197069][ T5346] ? ext4_inode_journal_mode+0x193/0x470
[ 85.197082][ T5346] ext4_write_begin+0xb3a/0x1860
[ 85.197101][ T5346] ? __pfx_ext4_write_begin+0x10/0x10
[ 85.197118][ T5346] ext4_da_write_begin+0x352/0xd30
[ 85.197135][ T5346] ? __pfx_ext4_da_write_begin+0x10/0x10
[ 85.197151][ T5346] generic_perform_write+0x2c5/0x900
[ 85.197163][ T5346] ? __pfx_generic_perform_write+0x10/0x10
[ 85.197173][ T5346] ? file_update_time_flags+0x448/0x4e0
[ 85.197188][ T5346] ? ext4_write_checks+0x24b/0x2c0
[ 85.197200][ T5346] ext4_buffered_write_iter+0xce/0x3a0
[ 85.197213][ T5346] ext4_file_write_iter+0x292/0x1bc0
[ 85.197226][ T5346] ? vfs_write+0x211/0xb30
[ 85.197235][ T5346] ? vfs_write+0x211/0xb30
[ 85.197243][ T5346] ? __pfx_ext4_file_write_iter+0x10/0x10
[ 85.197251][ T5346] vfs_write+0x5c9/0xb30
[ 85.197260][ T5346] ? __pfx_ext4_file_write_iter+0x10/0x10
[ 85.197267][ T5346] ? __pfx_vfs_write+0x10/0x10
[ 85.197276][ T5346] ? __fget_files+0x2a/0x420
[ 85.197283][ T5346] ksys_write+0x145/0x250
[ 85.197292][ T5346] ? __pfx_ksys_write+0x10/0x10
[ 85.197302][ T5346] do_syscall_64+0xec/0xf80
[ 85.197347][ T5346] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 85.197354][ T5346] ? trace_irq_disable+0x37/0x100
[ 85.197363][ T5346] ? clear_bhb_loop+0x60/0xb0
[ 85.197371][ T5346] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 85.197378][ T5346] RIP: 0033:0x7fa6e3b8f7c9
[ 85.197387][ T5346] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[ 85.197393][ T5346] RSP: 002b:00007fa6e4ac5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 85.197403][ T5346] RAX: ffffffffffffffda RBX: 00007fa6e3de5fa0 RCX: 00007fa6e3b8f7c9
[ 85.197411][ T5346] RDX: 00000000fffffdef RSI: 00002000000000c0 RDI: 0000000000000007
[ 85.197418][ T5346] RBP: 00007fa6e3c13f91 R08: 0000000000000000 R09: 0000000000000000
[ 85.197424][ T5346] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 85.197430][ T5346] R13: 00007fa6e3de6038 R14: 00007fa6e3de5fa0 R15: 00007ffe4d4af5b8
[ 85.197441][ T5346]
[ 85.197445][ T5346]
[ 85.351114][ T5346] The buggy address belongs to the physical page:
[ 85.353989][ T5346] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x55a18
[ 85.357780][ T5346] flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff)
[ 85.360988][ T5346] raw: 04fff00000000000 ffffea0001568648 ffffea00015685c8 0000000000000000
[ 85.364753][ T5346] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 85.368726][ T5346] page dumped because: kasan: bad access detected
[ 85.371891][ T5346] page_owner info is not present (never set?)
[ 85.374408][ T5346]
[ 85.375490][ T5346] Memory state around the buggy address:
[ 85.377902][ T5346] ffff888055a18b00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 85.381297][ T5346] ffff888055a18b80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 85.384923][ T5346] >ffff888055a18c00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 85.388382][ T5346] ^
[ 85.391284][ T5346] ffff888055a18c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 85.394909][ T5346] ffff888055a18d00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 85.398513][ T5346] ==================================================================
[ 85.413100][ T5346] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 85.416983][ T5346] CPU: 0 UID: 0 PID: 5346 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 85.420660][ T5346] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 85.425283][ T5346] Call Trace:
[ 85.426809][ T5346]
[ 85.428152][ T5346] vpanic+0x1e0/0x670
[ 85.429992][ T5346] panic+0xb9/0xc0
[ 85.431667][ T5346] ? __pfx_panic+0x10/0x10
[ 85.433713][ T5346] ? preempt_schedule_common+0x83/0xd0
[ 85.436233][ T5346] ? ext4_find_extent+0xae6/0xcc0
[ 85.438523][ T5346] check_panic_on_warn+0x89/0xb0
[ 85.440795][ T5346] ? ext4_find_extent+0xae6/0xcc0
[ 85.443069][ T5346] end_report+0x6f/0x140
[ 85.445066][ T5346] kasan_report+0x129/0x150
[ 85.447164][ T5346] ? ext4_find_extent+0xae6/0xcc0
[ 85.449388][ T5346] ext4_find_extent+0xae6/0xcc0
[ 85.451669][ T5346] ext4_ext_map_blocks+0x278/0x69c0
[ 85.454016][ T5346] ? ext4_map_blocks+0x73f/0x16f0
[ 85.456300][ T5346] ? __pfx_ext4_ext_map_blocks+0x10/0x10
[ 85.458992][ T5346] ? ext4_es_lookup_extent+0x6cd/0xb00
[ 85.461475][ T5346] ext4_map_blocks+0x82c/0x16f0
[ 85.463964][ T5346] ? kasan_save_track+0x4f/0x80
[ 85.466408][ T5346] ? __pfx_ext4_map_blocks+0x10/0x10
[ 85.468772][ T5346] ? ext4_da_write_begin+0x352/0xd30
[ 85.471031][ T5346] ? obj_cgroup_charge_account+0x13b/0x650
[ 85.473654][ T5346] _ext4_get_block+0x1fa/0x4c0
[ 85.475869][ T5346] ? __pfx__ext4_get_block+0x10/0x10
[ 85.478203][ T5346] ext4_get_block_unwritten+0x2e/0x100
[ 85.480680][ T5346] ext4_block_write_begin+0xb03/0x1940
[ 85.483192][ T5346] ? __pfx_ext4_get_block_unwritten+0x10/0x10
[ 85.485874][ T5346] ? __pfx_ext4_block_write_begin+0x10/0x10
[ 85.488503][ T5346] ? folio_mapping+0x16f/0x1f0
[ 85.490595][ T5346] ? ext4_inode_journal_mode+0x193/0x470
[ 85.493045][ T5346] ext4_write_begin+0xb3a/0x1860
[ 85.495226][ T5346] ? __pfx_ext4_write_begin+0x10/0x10
[ 85.497591][ T5346] ext4_da_write_begin+0x352/0xd30
[ 85.499908][ T5346] ? __pfx_ext4_da_write_begin+0x10/0x10
[ 85.502320][ T5346] generic_perform_write+0x2c5/0x900
[ 85.504641][ T5346] ? __pfx_generic_perform_write+0x10/0x10
[ 85.507232][ T5346] ? file_update_time_flags+0x448/0x4e0
[ 85.509651][ T5346] ? ext4_write_checks+0x24b/0x2c0
[ 85.511886][ T5346] ext4_buffered_write_iter+0xce/0x3a0
[ 85.514322][ T5346] ext4_file_write_iter+0x292/0x1bc0
[ 85.516677][ T5346] ? vfs_write+0x211/0xb30
[ 85.518650][ T5346] ? vfs_write+0x211/0xb30
[ 85.520635][ T5346] ? __pfx_ext4_file_write_iter+0x10/0x10
[ 85.523061][ T5346] vfs_write+0x5c9/0xb30
[ 85.524898][ T5346] ? __pfx_ext4_file_write_iter+0x10/0x10
[ 85.527288][ T5346] ? __pfx_vfs_write+0x10/0x10
[ 85.529346][ T5346] ? __fget_files+0x2a/0x420
[ 85.531342][ T5346] ksys_write+0x145/0x250
[ 85.533257][ T5346] ? __pfx_ksys_write+0x10/0x10
[ 85.535547][ T5346] do_syscall_64+0xec/0xf80
[ 85.537621][ T5346] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 85.540355][ T5346] ? trace_irq_disable+0x37/0x100
[ 85.542653][ T5346] ? clear_bhb_loop+0x60/0xb0
[ 85.544727][ T5346] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 85.547288][ T5346] RIP: 0033:0x7fa6e3b8f7c9
[ 85.549252][ T5346] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
[ 85.557204][ T5346] RSP: 002b:00007fa6e4ac5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 85.561354][ T5346] RAX: ffffffffffffffda RBX: 00007fa6e3de5fa0 RCX: 00007fa6e3b8f7c9
[ 85.564659][ T5346] RDX: 00000000fffffdef RSI: 00002000000000c0 RDI: 0000000000000007
[ 85.567976][ T5346] RBP: 00007fa6e3c13f91 R08: 0000000000000000 R09: 0000000000000000
[ 85.571297][ T5346] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 85.574615][ T5346] R13: 00007fa6e3de6038 R14: 00007fa6e3de5fa0 R15: 00007ffe4d4af5b8
[ 85.577989][ T5346]
[ 85.579654][ T5346] Kernel Offset: disabled
[ 85.581527][ T5346] Rebooting in 86400 seconds..