program: syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000140)='./file1\x00', 0x30000c6, &(0x7f0000000080), 0x1, 0x553, &(0x7f0000001080)="$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") mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./bus\x00', 0x0) chdir(&(0x7f00000000c0)='./bus\x00') lsetxattr$system_posix_acl(&(0x7f0000000400)='.\x00', &(0x7f0000000440)='system.posix_acl_default\x00', &(0x7f00000000c0)=ANY=[@ANYBLOB="02000000010000000000000002000000", @ANYRES32=0xee01, @ANYBLOB="02000000", @ANYRES32=0xee00, @ANYBLOB="02000000", @ANYRES32=0xee00, @ANYBLOB="02000000", @ANYRES32=0x0, @ANYBLOB="040000000000800008000000", @ANYRES32=0x0, @ANYBLOB='\b\x00\x00\x00', @ANYRES32=0x0, @ANYBLOB='\b\x00\x00\x00', @ANYRES32=0x0, @ANYBLOB="100000000000000020"], 0x5c, 0x0) syz_mount_image$fuse(0x0, &(0x7f0000000400)='./file0\x00', 0x0, 0x0, 0x0, 0x0, 0x0) setxattr$trusted_overlay_upper(&(0x7f0000000380)='./file0\x00', &(0x7f0000000680), &(0x7f00000006c0)=ANY=[], 0x835, 0x1) lsetxattr$trusted_overlay_upper(&(0x7f0000000180)='./file0\x00', &(0x7f00000001c0), 0x0, 0x0, 0x0) syz_mount_image$fuse(0x0, &(0x7f0000000180)='./file2\x00', 0x0, 0x0, 0x0, 0x0, 0x0) perf_event_open(&(0x7f0000000300)={0x2, 0x80, 0x66, 0xf, 0x0, 0x0, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext={0x0, 0x1948}, 0x0, 0x0, 0x0, 0x8, 0x40103fc, 0x7, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xa) socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) ioctl$SIOCSIFHWADDR(r0, 0x8b06, &(0x7f0000000080)={'wlan1\x00', @random="02000000000a"}) r1 = socket$nl_generic(0x10, 0x3, 0x10) r2 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='blkio.bfq.avg_queue_size\x00', 0x275a, 0x0) write$binfmt_script(r2, &(0x7f0000000000), 0x208e24b) r3 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000080), 0xffffffffffffffff) ioctl$sock_SIOCGIFINDEX_80211(r1, 0x8933, &(0x7f00000000c0)={'wlan1\x00', 0x0}) sendmsg$NL80211_CMD_CONNECT(r1, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x28, r3, 0x5, 0x0, 0x25dfdbfb, {{}, {@val={0x8, 0x3, r4}, @void}}, [@NL80211_ATTR_SSID={0xa, 0x34, @default_ap_ssid}]}, 0x28}}, 0x0) mount$overlay(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f0000000000), 0x0, &(0x7f0000000140)={[{@workdir={'workdir', 0x3d, './file0'}}, {@lowerdir={'lowerdir', 0x3d, '.'}}, {@upperdir={'upperdir', 0x3d, './file2'}}], [], 0x2c}) [ 75.242777][ T4673] Bluetooth: hci0: command tx timeout [ 75.317580][ T5324] loop0: detected capacity change from 0 to 1024 [ 75.332559][ T5324] ======================================================= [ 75.332559][ T5324] WARNING: The mand mount option has been deprecated and [ 75.332559][ T5324] and is ignored by this kernel. Remove the mand [ 75.332559][ T5324] option from the mount to silence this warning. [ 75.332559][ T5324] ======================================================= [ 75.434366][ T5324] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 75.505835][ T5324] warning: `syz.0.0' uses wireless extensions which will stop working for Wi-Fi 7 hardware; use nl80211 [ 75.568309][ T5324] EXT4-fs error (device loop0): ext4_mb_mark_diskspace_used:4193: comm syz.0.0: Allocating blocks 497-513 which overlap fs metadata [ 75.650283][ T5324] EXT4-fs (loop0): pa ffff888041be0910: logic 128, phys. 385, len 8 [ 75.654092][ T5324] EXT4-fs error (device loop0): ext4_mb_release_inode_pa:5444: group 0, free 0, pa_free 1 [ 75.660954][ T5324] ================================================================== [ 75.664266][ T5324] BUG: KASAN: use-after-free in ext4_ext_remove_space+0x3211/0x42f0 [ 75.667767][ T5324] Read of size 4 at addr ffff88804c303c18 by task syz.0.0/5324 [ 75.671132][ T5324] [ 75.672290][ T5324] CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 75.672307][ T5324] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.672314][ T5324] Call Trace: [ 75.672322][ T5324] [ 75.672328][ T5324] dump_stack_lvl+0x189/0x250 [ 75.672348][ T5324] ? __kasan_check_byte+0x12/0x40 [ 75.672365][ T5324] ? __pfx_dump_stack_lvl+0x10/0x10 [ 75.672380][ T5324] ? lock_release+0x4b/0x3e0 [ 75.672394][ T5324] ? __virt_addr_valid+0x4a5/0x5c0 [ 75.672410][ T5324] print_report+0xca/0x240 [ 75.672431][ T5324] ? ext4_ext_remove_space+0x3211/0x42f0 [ 75.672444][ T5324] kasan_report+0x118/0x150 [ 75.672458][ T5324] ? ext4_ext_remove_space+0x3211/0x42f0 [ 75.672471][ T5324] ext4_ext_remove_space+0x3211/0x42f0 [ 75.672485][ T5324] ? __es_remove_extent+0x2ce/0x1780 [ 75.672504][ T5324] ? ext4_es_remove_extent+0x218/0x420 [ 75.672517][ T5324] ? __pfx_ext4_ext_remove_space+0x10/0x10 [ 75.672528][ T5324] ? ext4_es_remove_extent+0x263/0x420 [ 75.672542][ T5324] ext4_ext_truncate+0x17e/0x300 [ 75.672553][ T5324] ext4_truncate+0xb4f/0x12e0 [ 75.672568][ T5324] ? down_write+0x162/0x1f0 [ 75.672623][ T5324] ? __pfx_ext4_truncate+0x10/0x10 [ 75.672637][ T5324] ? __ext4_journal_stop+0x34/0x1a0 [ 75.672655][ T5324] ext4_write_begin+0x1150/0x19a0 [ 75.672673][ T5324] ? __pfx_ext4_write_begin+0x10/0x10 [ 75.672685][ T5324] ext4_da_write_begin+0x445/0xda0 [ 75.672699][ T5324] ? __pfx_ext4_da_write_begin+0x10/0x10 [ 75.672713][ T5324] generic_perform_write+0x2c5/0x900 [ 75.672726][ T5324] ? __pfx_generic_perform_write+0x10/0x10 [ 75.672735][ T5324] ? file_modified_flags+0x4bb/0x560 [ 75.672747][ T5324] ? ext4_write_checks+0x24b/0x2c0 [ 75.672764][ T5324] ext4_buffered_write_iter+0xce/0x3a0 [ 75.672779][ T5324] ext4_file_write_iter+0x298/0x1bc0 [ 75.672800][ T5324] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 75.672818][ T5324] vfs_write+0x5c9/0xb30 [ 75.672831][ T5324] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 75.672846][ T5324] ? __pfx_vfs_write+0x10/0x10 [ 75.672860][ T5324] ? __fget_files+0x2a/0x420 [ 75.672875][ T5324] ksys_write+0x145/0x250 [ 75.672888][ T5324] ? __pfx_ksys_write+0x10/0x10 [ 75.672901][ T5324] ? do_syscall_64+0xbe/0xfa0 [ 75.672915][ T5324] do_syscall_64+0xfa/0xfa0 [ 75.672927][ T5324] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.672939][ T5324] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.672949][ T5324] ? clear_bhb_loop+0x60/0xb0 [ 75.672961][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.672970][ T5324] RIP: 0033:0x7f92c8f8efc9 [ 75.672981][ T5324] 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 [ 75.672991][ T5324] RSP: 002b:00007f92c9e96038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 75.673004][ T5324] RAX: ffffffffffffffda RBX: 00007f92c91e5fa0 RCX: 00007f92c8f8efc9 [ 75.673013][ T5324] RDX: 000000000208e24b RSI: 0000200000000000 RDI: 0000000000000008 [ 75.673020][ T5324] RBP: 00007f92c9011f91 R08: 0000000000000000 R09: 0000000000000000 [ 75.673027][ T5324] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.673034][ T5324] R13: 00007f92c91e6038 R14: 00007f92c91e5fa0 R15: 00007ffebd807078 [ 75.673046][ T5324] [ 75.673050][ T5324] [ 75.814123][ T5324] The buggy address belongs to the physical page: [ 75.816858][ T5324] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4c303 [ 75.820588][ T5324] flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) [ 75.823607][ T5324] raw: 04fff00000000000 ffffea000130c108 ffffea000130c088 0000000000000000 [ 75.827447][ T5324] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 75.831150][ T5324] page dumped because: kasan: bad access detected [ 75.833903][ T5324] page_owner info is not present (never set?) [ 75.836507][ T5324] [ 75.837617][ T5324] Memory state around the buggy address: [ 75.840113][ T5324] ffff88804c303b00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 75.843592][ T5324] ffff88804c303b80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 75.847047][ T5324] >ffff88804c303c00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 75.850542][ T5324] ^ [ 75.852776][ T5324] ffff88804c303c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 75.856324][ T5324] ffff88804c303d00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 75.859839][ T5324] ================================================================== [ 75.881429][ T5324] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 75.884611][ T5324] CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 75.888539][ T5324] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.893179][ T5324] Call Trace: [ 75.894659][ T5324] [ 75.896027][ T5324] dump_stack_lvl+0x99/0x250 [ 75.898104][ T5324] ? __asan_memcpy+0x40/0x70 [ 75.900280][ T5324] ? __pfx_dump_stack_lvl+0x10/0x10 [ 75.902624][ T5324] ? __pfx__printk+0x10/0x10 [ 75.904787][ T5324] vpanic+0x237/0x6d0 [ 75.906618][ T5324] ? __pfx_vpanic+0x10/0x10 [ 75.908621][ T5324] ? preempt_schedule+0xae/0xc0 [ 75.910779][ T5324] ? __pfx_preempt_schedule+0x10/0x10 [ 75.913155][ T5324] panic+0xb9/0xc0 [ 75.914844][ T5324] ? __pfx_panic+0x10/0x10 [ 75.916903][ T5324] ? _raw_spin_unlock_irqrestore+0xfd/0x110 [ 75.919449][ T5324] ? ext4_ext_remove_space+0x3211/0x42f0 [ 75.921844][ T5324] check_panic_on_warn+0x89/0xb0 [ 75.924079][ T5324] ? ext4_ext_remove_space+0x3211/0x42f0 [ 75.926495][ T5324] end_report+0x78/0x160 [ 75.928387][ T5324] kasan_report+0x129/0x150 [ 75.930338][ T5324] ? ext4_ext_remove_space+0x3211/0x42f0 [ 75.932713][ T5324] ext4_ext_remove_space+0x3211/0x42f0 [ 75.935153][ T5324] ? __es_remove_extent+0x2ce/0x1780 [ 75.937510][ T5324] ? ext4_es_remove_extent+0x218/0x420 [ 75.939992][ T5324] ? __pfx_ext4_ext_remove_space+0x10/0x10 [ 75.942623][ T5324] ? ext4_es_remove_extent+0x263/0x420 [ 75.945104][ T5324] ext4_ext_truncate+0x17e/0x300 [ 75.947248][ T5324] ext4_truncate+0xb4f/0x12e0 [ 75.949265][ T5324] ? down_write+0x162/0x1f0 [ 75.951296][ T5324] ? __pfx_ext4_truncate+0x10/0x10 [ 75.953524][ T5324] ? __ext4_journal_stop+0x34/0x1a0 [ 75.955780][ T5324] ext4_write_begin+0x1150/0x19a0 [ 75.957944][ T5324] ? __pfx_ext4_write_begin+0x10/0x10 [ 75.960444][ T5324] ext4_da_write_begin+0x445/0xda0 [ 75.962796][ T5324] ? __pfx_ext4_da_write_begin+0x10/0x10 [ 75.965296][ T5324] generic_perform_write+0x2c5/0x900 [ 75.967716][ T5324] ? __pfx_generic_perform_write+0x10/0x10 [ 75.970284][ T5324] ? file_modified_flags+0x4bb/0x560 [ 75.972623][ T5324] ? ext4_write_checks+0x24b/0x2c0 [ 75.974872][ T5324] ext4_buffered_write_iter+0xce/0x3a0 [ 75.977263][ T5324] ext4_file_write_iter+0x298/0x1bc0 [ 75.979582][ T5324] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 75.982102][ T5324] vfs_write+0x5c9/0xb30 [ 75.984017][ T5324] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 75.986533][ T5324] ? __pfx_vfs_write+0x10/0x10 [ 75.988667][ T5324] ? __fget_files+0x2a/0x420 [ 75.990696][ T5324] ksys_write+0x145/0x250 [ 75.992616][ T5324] ? __pfx_ksys_write+0x10/0x10 [ 75.994731][ T5324] ? do_syscall_64+0xbe/0xfa0 [ 75.996849][ T5324] do_syscall_64+0xfa/0xfa0 [ 75.998945][ T5324] ? lockdep_hardirqs_on+0x9c/0x150 [ 76.001256][ T5324] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.003952][ T5324] ? clear_bhb_loop+0x60/0xb0 [ 76.006077][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.008677][ T5324] RIP: 0033:0x7f92c8f8efc9 [ 76.010623][ T5324] 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 [ 76.018811][ T5324] RSP: 002b:00007f92c9e96038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 76.022465][ T5324] RAX: ffffffffffffffda RBX: 00007f92c91e5fa0 RCX: 00007f92c8f8efc9 [ 76.026053][ T5324] RDX: 000000000208e24b RSI: 0000200000000000 RDI: 0000000000000008 [ 76.029521][ T5324] RBP: 00007f92c9011f91 R08: 0000000000000000 R09: 0000000000000000 [ 76.032987][ T5324] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.036484][ T5324] R13: 00007f92c91e6038 R14: 00007f92c91e5fa0 R15: 00007ffebd807078 [ 76.039752][ T5324] [ 76.041328][ T5324] Kernel Offset: disabled [ 76.043108][ T5324] Rebooting in 86400 seconds..