program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$eJzs3U1sHGf9B/DvbnbX3vz/Sp02SQOqRNRIBRGROLGSYi4NCKFIVKgqB8TRSpzGyiatHBc5EYLwfuDCoXeKRG5cQOIeVM7AqVcfKyFx6SmAxKKZnbXXr9l1Yq8tPp9odp5nnpd5nt/M7OzOKnKA/1nXzqXxOLVcO/fmcpFfeTTTWXk0c6efTjKRpJ40eqvU7ia1j5Kr6S35TLGx6q623X4+WJh9++NPVz7p5RrVUtav79Rukyv1LTY+rJacSXKkWj+Ddf1d39Bfa+TuaqszLAJ2th84GLdmku463z21VvJUw1+3wIFVK++bm6/5qeRoksnqc0Dvrti7Zx9qD8c9AAAAANgHL/yy/Ap/bNzjAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgMOk9/f/i1W51PvpM6n1//5/q9qWKn2oPR73AAAAAAAAAABgdN/8/w0bPvckT7KcY/18t1b+5v9qmTlRvv5f3s+9zGcx57OcuSxlKYu5mGSqLG+Wr63luaWlxYtDtLy02jIDLS8NOYP27icPAAAAAAAAAIdFY/QmP861td//AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADgIKglR3qrcjnRT0+l3kgymaRV1HuY/LWfPpB+/afBXPff3dKmao/3c0wAAAAwJi88yZMs51g/362V3/lPld/7J/N+7mYpC1lKJ/O5UT4L6H3rr688mumsPJq5Uyyb+/3qP0YaRtljes8ett7z6bJGOzezUG45n+t5N53cSL1sWTjdH8/W4/pRMabaG5UhR3ajWhcz/1WaI81qN2pD15wqI1KMqBeR6aptEY3jO0dixKPT31M/9hdTX33yc+J5xny5t3r9t711MZ+fjxSTvbYxEpcGzr5TK6ntEInk83/83Xdude7enrh579zBmdIIJgaeoG2MxMxAJF7e+ZxIM1Ukbh3WSAyaLiNxcjV/Ld/It3MuZ/JWFrOQ72UuS5nPmXw9czmSuep8Ll6ndo7U1XW5t542klZ5XJrVu+jwY1rKXF4t2x7LQr6Vd3Mj87lS/ruUi3m96jGrR/jkEFd9fbR32rNfGHiY/Isk7eHa7YNiYMdX706DZ/10eR0cX7dl7Tp48fnfjxqfrRLFPn4ycETGb2MkLg5E4qWdI/Gb8m3lXufu7cVbc+8Nub/XqnVxHf3sQN0livPlxeJglbn1Z0dR9tLGsslevFrVLy69svV33KLs5GrZ9lfq5VzObFn71JY9XSrLXt6ybKYsOz1Qtu7z1tXe5y0ADryjXzzaav+9/Zf2h+2ftm+135z82sSXJ15ppfnn5lca00deq79S+0M+zA/Wvv8DAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAC7d+/+g9tznc784oZEt9v94TZFe5hoJ+lvSZ7Wqpmn19mbRCtJmWj0E6P1MzFU5dba0Xnj988y5uaorZLnEqhGdZLdf3D7n91ud98P0xaJ5g7n/FqiW9lU1B2q+dgS/+o+vw7H/MYE7LkLS3feu3Dv/oMvLdyZe2f+nfm7s5cvz07PXr7ytws3Fzrz073XcY8S2AtrN/1xjwQAAAAAAAAAAAAY1n78t4Rtdv2ffZ4qAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAcEhdOzdRpc5PF68rj2Y6xdJPr1Ysq9WT1L6f1D5Krqa3ZGqgu9p2+/lgYfbtjz9d+aSXa1RLWb++rl1zN7N4WC05k+RItR40+Qz9Xa/WuxpZqbY6wyJgZ/uBg3H7bwAAAP//2wMQAg==") r0 = creat(&(0x7f0000000100)='./file1\x00', 0x184) syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f00000000c0)='./file1\x00', 0x10, &(0x7f0000000740), 0xfe, 0x49b, &(0x7f0000000300)="$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") io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 85.523550][ T5303] Bluetooth: hci0: command tx timeout [ 85.609085][ T5323] loop0: detected capacity change from 0 to 1024 [ 85.746582][ T5323] [ 85.747735][ T5323] ============================================ [ 85.750379][ T5323] WARNING: possible recursive locking detected [ 85.753017][ T5323] 6.15.0-rc6-syzkaller-00208-g3c21441eeffc #0 Not tainted [ 85.755984][ T5323] -------------------------------------------- [ 85.758631][ T5323] syz.0.0/5323 is trying to acquire lock: [ 85.761088][ T5323] ffff88803fc30108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 85.765991][ T5323] [ 85.765991][ T5323] but task is already holding lock: [ 85.769190][ T5323] ffff88803fc32988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 85.773934][ T5323] [ 85.773934][ T5323] other info that might help us debug this: [ 85.777347][ T5323] Possible unsafe locking scenario: [ 85.777347][ T5323] [ 85.780606][ T5323] CPU0 [ 85.782100][ T5323] ---- [ 85.783493][ T5323] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.786008][ T5323] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.788485][ T5323] [ 85.788485][ T5323] *** DEADLOCK *** [ 85.788485][ T5323] [ 85.791918][ T5323] May be due to missing lock nesting notation [ 85.791918][ T5323] [ 85.795314][ T5323] 3 locks held by syz.0.0/5323: [ 85.797351][ T5323] #0: ffff88803fc32b78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xe3/0x540 [ 85.801959][ T5323] #1: ffff88803fc32988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 85.806725][ T5323] #2: ffff88803e7ce0b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 [ 85.811090][ T5323] [ 85.811090][ T5323] stack backtrace: [ 85.813623][ T5323] CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.15.0-rc6-syzkaller-00208-g3c21441eeffc #0 PREEMPT(full) [ 85.813640][ T5323] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.813648][ T5323] Call Trace: [ 85.813655][ T5323] [ 85.813661][ T5323] dump_stack_lvl+0x189/0x250 [ 85.813682][ T5323] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.813700][ T5323] ? __pfx__printk+0x10/0x10 [ 85.813712][ T5323] ? print_lock_name+0xde/0x100 [ 85.813732][ T5323] print_deadlock_bug+0x28b/0x2a0 [ 85.813746][ T5323] validate_chain+0x1a3f/0x2140 [ 85.813759][ T5323] ? unwind_next_frame+0xa5/0x2390 [ 85.813775][ T5323] ? check_path+0x21/0x40 [ 85.813786][ T5323] ? check_noncircular+0xe0/0x160 [ 85.813797][ T5323] ? look_up_lock_class+0x74/0x170 [ 85.813862][ T5323] ? register_lock_class+0x51/0x320 [ 85.813880][ T5323] __lock_acquire+0xaac/0xd20 [ 85.813898][ T5323] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.813914][ T5323] lock_acquire+0x120/0x360 [ 85.813930][ T5323] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.813950][ T5323] __mutex_lock+0x182/0xe80 [ 85.813965][ T5323] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.813982][ T5323] ? check_path+0x21/0x40 [ 85.813992][ T5323] ? check_noncircular+0xe0/0x160 [ 85.814004][ T5323] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.814021][ T5323] ? __pfx___mutex_lock+0x10/0x10 [ 85.814040][ T5323] hfsplus_file_extend+0x1fc/0x1990 [ 85.814058][ T5323] ? __lock_acquire+0xaac/0xd20 [ 85.814075][ T5323] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.814091][ T5323] ? __mutex_trylock_common+0x153/0x260 [ 85.814103][ T5323] ? __pfx___mutex_trylock_common+0x10/0x10 [ 85.814117][ T5323] ? rcu_is_watching+0x15/0xb0 [ 85.814128][ T5323] ? trace_contention_end+0x39/0x120 [ 85.814140][ T5323] ? __mutex_lock+0x330/0xe80 [ 85.814154][ T5323] ? hfsplus_brec_find+0x191/0x500 [ 85.814169][ T5323] hfsplus_bmap_reserve+0x122/0x500 [ 85.814184][ T5323] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 85.814203][ T5323] __hfsplus_ext_cache_extent+0x89/0xe30 [ 85.814222][ T5323] hfsplus_file_extend+0x444/0x1990 [ 85.814242][ T5323] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.814260][ T5323] ? clean_bdev_aliases+0x5c9/0x6b0 [ 85.814279][ T5323] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 85.814296][ T5323] hfsplus_get_block+0x411/0x1530 [ 85.814325][ T5323] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.814342][ T5323] ? do_raw_spin_unlock+0x4d/0x240 [ 85.814357][ T5323] ? _raw_spin_unlock+0x28/0x50 [ 85.814373][ T5323] __block_write_begin_int+0x6b5/0x1900 [ 85.814394][ T5323] ? folio_add_lru+0x1b3/0x3d0 [ 85.814408][ T5323] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.814426][ T5323] ? __pfx___block_write_begin_int+0x10/0x10 [ 85.814447][ T5323] cont_write_begin+0x789/0xb50 [ 85.814468][ T5323] ? __pfx_cont_write_begin+0x10/0x10 [ 85.814486][ T5323] ? __pfx___might_resched+0x10/0x10 [ 85.814498][ T5323] ? folio_unlock+0x101/0x160 [ 85.814518][ T5323] hfsplus_write_begin+0x66/0xb0 [ 85.814533][ T5323] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.814550][ T5323] generic_perform_write+0x2c4/0x910 [ 85.814565][ T5323] ? __pfx_generic_perform_write+0x10/0x10 [ 85.814579][ T5323] ? file_update_time+0x2da/0x490 [ 85.814591][ T5323] ? __generic_file_write_iter+0xf9/0x230 [ 85.814603][ T5323] ? generic_file_write_iter+0xfb/0x540 [ 85.814617][ T5323] generic_file_write_iter+0x10f/0x540 [ 85.814630][ T5323] ? aa_file_perm+0x11f/0xed0 [ 85.814645][ T5323] ? __pfx_generic_file_write_iter+0x10/0x10 [ 85.814660][ T5323] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 85.814672][ T5323] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 85.814689][ T5323] ? __lock_acquire+0xaac/0xd20 [ 85.814709][ T5323] ? aio_write+0x4c4/0x790 [ 85.814725][ T5323] aio_write+0x535/0x790 [ 85.814741][ T5323] ? __pfx_aio_write+0x10/0x10 [ 85.814759][ T5323] ? __might_fault+0xb0/0x130 [ 85.814780][ T5323] io_submit_one+0x70a/0x1240 [ 85.814796][ T5323] ? __lock_acquire+0xaac/0xd20 [ 85.814813][ T5323] ? __pfx_io_submit_one+0x10/0x10 [ 85.814828][ T5323] ? __might_fault+0xb0/0x130 [ 85.814845][ T5323] ? __might_fault+0xb0/0x130 [ 85.814860][ T5323] __se_sys_io_submit+0x185/0x2f0 [ 85.814874][ T5323] ? __pfx___se_sys_io_submit+0x10/0x10 [ 85.814890][ T5323] ? do_syscall_64+0xba/0x210 [ 85.814906][ T5323] do_syscall_64+0xf6/0x210 [ 85.814922][ T5323] ? clear_bhb_loop+0x60/0xb0 [ 85.814935][ T5323] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.814947][ T5323] RIP: 0033:0x7f5a9298e969 [ 85.814960][ T5323] 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 [ 85.814970][ T5323] RSP: 002b:00007f5a93741038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 85.814984][ T5323] RAX: ffffffffffffffda RBX: 00007f5a92bb5fa0 RCX: 00007f5a9298e969 [ 85.814993][ T5323] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f5a936f7000 [ 85.815002][ T5323] RBP: 00007f5a92a10ab1 R08: 0000000000000000 R09: 0000000000000000 [ 85.815010][ T5323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.815016][ T5323] R13: 0000000000000000 R14: 00007f5a92bb5fa0 R15: 00007ffdc73bfd08 [ 85.815024][ T5323]