program: r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$devlink(&(0x7f0000000380), 0xffffffffffffffff) sendmsg$DEVLINK_CMD_RATE_NEW(r0, &(0x7f00000004c0)={0x0, 0x0, &(0x7f0000000480)={&(0x7f0000000280)={0x20, r1, 0x905, 0x0, 0x2, {0x2a}, [@DEVLINK_ATTR_RATE_TX_SHARE={0xc, 0xa6, 0xfffffffffffffff9}]}, 0x20}}, 0x0) syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f0000000380)=ANY=[@ANYBLOB="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"], 0xfe, 0xc24, &(0x7f0000001480)="$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") r2 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x10) ftruncate(r2, 0x2007ffc) sendfile(r2, r2, 0x0, 0x800000009) r3 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) r4 = open(&(0x7f0000000080)='./bus\x00', 0x107382, 0x1d0) ftruncate(r4, 0x2007ffb) sendfile(r3, r4, 0x0, 0x1000000201005) r5 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000140)=ANY=[@ANYBLOB="1201500200000040cb06682940000102030109020500010102200505000000000000000009210700010122f8090905810340000180b5"], 0x0) truncate(&(0x7f00000013c0)='./file1\x00', 0x0) syz_mount_image$ocfs2(&(0x7f0000004440), &(0x7f0000000040)='./file1\x00', 0x2008c0, &(0x7f00000007c0)=ANY=[@ANYBLOB="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", @ANYRESDEC=0x0, @ANYRES16, @ANYRES64, @ANYRES64=r5, @ANYRES16], 0x1, 0x446a, 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VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVhB44FAAAAAIT5W0fRtwEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMCvAAAA//9A7BtH") r6 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000001c0)='cpuset.effective_mems\x00', 0x275a, 0x0) fcntl$setstatus(r6, 0x4, 0x0) r7 = dup(r6) pwritev2(r7, &(0x7f0000000000)=[{&(0x7f00000000c0)="aa", 0x1}], 0x1, 0x0, 0x0, 0x4) sendto$ax25(r6, &(0x7f0000000200)="56ce2f8f2faa6573e383d285450c9a68df8ffd7ec89e4b09bacaf57b3adfe79282d1a5421e2e5cbeb216f286870ef7338dc050ee6dcf2adca9e98431166790dae98aa60cae6e813fcccb2583467bd453be587a6299c5238586737eb7f71c7a93ab3041225d4667560e642db171e59083de9f8e63dcec9ddd1d861bca23d918", 0x7f, 0xc041, 0x0, 0x0) copy_file_range(r6, 0x0, r7, &(0x7f0000000640)=0xe000, 0xd8c2, 0x0) [ 85.258325][ T4703] Bluetooth: hci0: command tx timeout [ 85.330388][ T5364] loop0: detected capacity change from 0 to 2048 [ 85.367747][ T5364] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 85.382781][ T5364] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 85.396769][ T5364] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 85.406805][ T5364] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 85.428088][ T25] audit: type=1800 audit(1756954461.308:2): pid=5364 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="file1" dev="loop0" ino=1346 res=0 errno=0 [ 85.795376][ T5348] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 86.566236][ T10] cfg80211: failed to load regulatory.db [ 86.583238][ T5364] [ 86.584255][ T5364] ============================================ [ 86.586725][ T5364] WARNING: possible recursive locking detected [ 86.588880][ T5364] syzkaller #0 Not tainted [ 86.590754][ T5364] -------------------------------------------- [ 86.593159][ T5364] syz.0.0/5364 is trying to acquire lock: [ 86.595473][ T5364] ffff88803fed7128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_free_blocks+0x9e2/0x17f0 [ 86.599285][ T5364] [ 86.599285][ T5364] but task is already holding lock: [ 86.602135][ T5364] ffff88803fed7128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 86.605848][ T5364] [ 86.605848][ T5364] other info that might help us debug this: [ 86.608914][ T5364] Possible unsafe locking scenario: [ 86.608914][ T5364] [ 86.611816][ T5364] CPU0 [ 86.613206][ T5364] ---- [ 86.614574][ T5364] lock(&sbi->s_alloc_mutex); [ 86.616471][ T5364] lock(&sbi->s_alloc_mutex); [ 86.618432][ T5364] [ 86.618432][ T5364] *** DEADLOCK *** [ 86.618432][ T5364] [ 86.621543][ T5364] May be due to missing lock nesting notation [ 86.621543][ T5364] [ 86.624789][ T5364] 4 locks held by syz.0.0/5364: [ 86.626792][ T5364] #0: ffff888037f6e428 (sb_writers#12){.+.+}-{0:0}, at: vfs_writev+0x288/0x960 [ 86.630237][ T5364] #1: ffff8880524ddc20 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: udf_file_write_iter+0x6e/0x6c0 [ 86.634422][ T5364] #2: ffff8880524dda50 (&ei->i_data_sem#2){++++}-{4:4}, at: udf_map_block+0x283/0x45f0 [ 86.638237][ T5364] #3: ffff88803fed7128 (&sbi->s_alloc_mutex){+.+.}-{4:4}, at: udf_prealloc_blocks+0x8d0/0x10b0 [ 86.642147][ T5364] [ 86.642147][ T5364] stack backtrace: [ 86.644505][ T5364] CPU: 0 UID: 0 PID: 5364 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 86.644520][ T5364] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 86.644528][ T5364] Call Trace: [ 86.644536][ T5364] [ 86.644542][ T5364] dump_stack_lvl+0x189/0x250 [ 86.644562][ T5364] ? __pfx_dump_stack_lvl+0x10/0x10 [ 86.644576][ T5364] ? __pfx__printk+0x10/0x10 [ 86.644594][ T5364] ? print_lock_name+0xde/0x100 [ 86.644608][ T5364] print_deadlock_bug+0x28b/0x2a0 [ 86.644620][ T5364] validate_chain+0x1a3f/0x2140 [ 86.644632][ T5364] ? __lock_acquire+0xab9/0xd20 [ 86.644650][ T5364] ? __lock_acquire+0xab9/0xd20 [ 86.644670][ T5364] __lock_acquire+0xab9/0xd20 [ 86.644687][ T5364] ? udf_free_blocks+0x9e2/0x17f0 [ 86.644700][ T5364] lock_acquire+0x120/0x360 [ 86.644713][ T5364] ? udf_free_blocks+0x9e2/0x17f0 [ 86.644731][ T5364] __mutex_lock+0x187/0x1350 [ 86.644791][ T5364] ? udf_free_blocks+0x9e2/0x17f0 [ 86.644807][ T5364] ? folio_mark_accessed+0x3d8/0x8b0 [ 86.644826][ T5364] ? __pfx_folio_mark_accessed+0x10/0x10 [ 86.644843][ T5364] ? udf_free_blocks+0x9e2/0x17f0 [ 86.644861][ T5364] ? __pfx___mutex_lock+0x10/0x10 [ 86.644875][ T5364] ? __pfx___might_resched+0x10/0x10 [ 86.644886][ T5364] ? fs_reclaim_acquire+0x7d/0x100 [ 86.644902][ T5364] udf_free_blocks+0x9e2/0x17f0 [ 86.644919][ T5364] ? udf_get_fileshortad+0x6e/0x1b0 [ 86.644935][ T5364] ? __pfx_udf_free_blocks+0x10/0x10 [ 86.644957][ T5364] udf_delete_aext+0x4df/0xbc0 [ 86.644967][ T5364] ? udf_get_fileshortad+0xcb/0x1b0 [ 86.644990][ T5364] ? __pfx_udf_delete_aext+0x10/0x10 [ 86.645005][ T5364] udf_prealloc_blocks+0xb7e/0x10b0 [ 86.645022][ T5364] ? udf_get_filelongad+0x6e/0x1b0 [ 86.645038][ T5364] ? __pfx_udf_new_block+0x10/0x10 [ 86.645053][ T5364] ? udf_current_aext+0x660/0xad0 [ 86.645064][ T5364] ? __pfx_udf_prealloc_blocks+0x10/0x10 [ 86.645084][ T5364] udf_map_block+0x1f70/0x45f0 [ 86.645101][ T5364] ? percpu_ref_get_many+0x19/0x140 [ 86.645115][ T5364] ? __pfx_udf_map_block+0x10/0x10 [ 86.645125][ T5364] ? percpu_ref_get_many+0x19/0x140 [ 86.645137][ T5364] ? register_lock_class+0x51/0x320 [ 86.645155][ T5364] ? do_raw_spin_lock+0x121/0x290 [ 86.645170][ T5364] ? do_raw_spin_unlock+0x4d/0x240 [ 86.645183][ T5364] __udf_get_block+0x52/0x250 [ 86.645192][ T5364] ? create_empty_buffers+0x465/0x530 [ 86.645209][ T5364] __block_write_begin_int+0x6b5/0x1900 [ 86.645223][ T5364] ? folio_add_lru+0x1b2/0x3d0 [ 86.645240][ T5364] ? __pfx_udf_get_block+0x10/0x10 [ 86.645251][ T5364] ? __pfx___block_write_begin_int+0x10/0x10 [ 86.645265][ T5364] ? __pfx_udf_get_block+0x10/0x10 [ 86.645275][ T5364] block_write_begin+0x8a/0x120 [ 86.645286][ T5364] ? udf_write_begin+0x92/0x270 [ 86.645292][ T5364] udf_write_begin+0x115/0x270 [ 86.645301][ T5364] generic_perform_write+0x2c5/0x900 [ 86.645314][ T5364] ? __pfx_generic_perform_write+0x10/0x10 [ 86.645325][ T5364] ? file_update_time+0x2da/0x490 [ 86.645336][ T5364] ? __generic_file_write_iter+0xf9/0x230 [ 86.645345][ T5364] ? udf_file_write_iter+0x1a3/0x6c0 [ 86.645361][ T5364] udf_file_write_iter+0x2d5/0x6c0 [ 86.645376][ T5364] do_iter_readv_writev+0x61c/0x8b0 [ 86.645392][ T5364] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 86.645404][ T5364] ? rcu_read_lock_any_held+0xb3/0x120 [ 86.645420][ T5364] vfs_writev+0x31a/0x960 [ 86.645436][ T5364] ? __lock_acquire+0xab9/0xd20 [ 86.645451][ T5364] ? __pfx_vfs_writev+0x10/0x10 [ 86.645463][ T5364] ? __fget_files+0x2a/0x420 [ 86.645477][ T5364] ? __fget_files+0x3a0/0x420 [ 86.645490][ T5364] ? __fget_files+0x2a/0x420 [ 86.645506][ T5364] __se_sys_pwritev2+0x179/0x290 [ 86.645520][ T5364] ? __pfx___se_sys_pwritev2+0x10/0x10 [ 86.645533][ T5364] ? rcu_is_watching+0x15/0xb0 [ 86.645542][ T5364] ? do_syscall_64+0xbe/0x3b0 [ 86.645555][ T5364] ? __x64_sys_pwritev2+0x20/0xc0 [ 86.645568][ T5364] do_syscall_64+0xfa/0x3b0 [ 86.645584][ T5364] ? lockdep_hardirqs_on+0x9c/0x150 [ 86.645599][ T5364] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.645611][ T5364] ? clear_bhb_loop+0x60/0xb0 [ 86.645623][ T5364] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.645635][ T5364] RIP: 0033:0x7eff7758ebe9 [ 86.645647][ T5364] 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 [ 86.645657][ T5364] RSP: 002b:00007eff78363038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 [ 86.645671][ T5364] RAX: ffffffffffffffda RBX: 00007eff777c5fa0 RCX: 00007eff7758ebe9 [ 86.645679][ T5364] RDX: 0000000000000001 RSI: 0000200000000000 RDI: 000000000000000a [ 86.645686][ T5364] RBP: 00007eff77611e19 R08: 0000000000000000 R09: 0000000000000004 [ 86.645693][ T5364] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.645698][ T5364] R13: 00007eff777c6038 R14: 00007eff777c5fa0 R15: 00007ffc504faea8 [ 86.645710][ T5364] [ 87.275253][ T4703] Bluetooth: hci0: command tx timeout [ 89.355154][ T4703] Bluetooth: hci0: command tx timeout [ 90.954975][ T5348] usb 5-1: unable to get BOS descriptor or descriptor too short [ 90.960046][ T5348] usb 5-1: unable to read config index 0 descriptor/start: -32 [ 90.963499][ T5348] usb 5-1: chopping to 0 config(s) [ 90.966102][ T5348] usb 5-1: can't read configurations, error -32 [ 91.094869][ T5348] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 91.224761][ T5348] usb 5-1: device descriptor read/64, error -32 [ 91.335520][ T5348] usb usb5-port1: attempt power cycle [ 91.434875][ T4703] Bluetooth: hci0: command tx timeout [ 91.674997][ T5348] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 91.695340][ T5348] usb 5-1: device descriptor read/8, error -32 [ 91.934887][ T5348] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 91.955163][ T5348] usb 5-1: device descriptor read/8, error -32 [ 92.064853][ T5348] usb usb5-port1: unable to enumerate USB device