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', 0x0) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 85.694490][ T5320] loop0: detected capacity change from 0 to 1024 [ 85.772406][ T5320] [ 85.773517][ T5320] ============================================ [ 85.776155][ T5320] WARNING: possible recursive locking detected [ 85.778768][ T5320] syzkaller #0 Not tainted [ 85.780778][ T5320] -------------------------------------------- [ 85.783504][ T5320] syz.0.0/5320 is trying to acquire lock: [ 85.785932][ T5320] ffff888042de0e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 85.790681][ T5320] [ 85.790681][ T5320] but task is already holding lock: [ 85.793983][ T5320] ffff888042db62c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 85.798727][ T5320] [ 85.798727][ T5320] other info that might help us debug this: [ 85.802270][ T5320] Possible unsafe locking scenario: [ 85.802270][ T5320] [ 85.805303][ T5320] CPU0 [ 85.806721][ T5320] ---- [ 85.808110][ T5320] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.810713][ T5320] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.813241][ T5320] [ 85.813241][ T5320] *** DEADLOCK *** [ 85.813241][ T5320] [ 85.816614][ T5320] May be due to missing lock nesting notation [ 85.816614][ T5320] [ 85.820135][ T5320] 3 locks held by syz.0.0/5320: [ 85.822194][ T5320] #0: ffff888042db64b8 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680 [ 85.827099][ T5320] #1: ffff888042db62c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 85.831869][ T5320] #2: ffff8880124f40b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 85.836121][ T5320] [ 85.836121][ T5320] stack backtrace: [ 85.838673][ T5320] CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.838689][ T5320] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 85.838696][ T5320] Call Trace: [ 85.838729][ T5320] [ 85.838764][ T5320] dump_stack_lvl+0xe8/0x150 [ 85.838784][ T5320] print_deadlock_bug+0x279/0x290 [ 85.838804][ T5320] __lock_acquire+0x253f/0x2cf0 [ 85.838822][ T5320] ? unwind_next_frame+0xa5/0x23c0 [ 85.838859][ T5320] ? __bfs+0x153/0x290 [ 85.838873][ T5320] ? __pfx_hlock_conflict+0x10/0x10 [ 85.838890][ T5320] lock_acquire+0xf0/0x2e0 [ 85.838903][ T5320] ? hfsplus_file_extend+0x215/0x1d70 [ 85.838921][ T5320] __mutex_lock+0x19f/0x1300 [ 85.838985][ T5320] ? hfsplus_file_extend+0x215/0x1d70 [ 85.839002][ T5320] ? __bfs+0x153/0x290 [ 85.839016][ T5320] ? hfsplus_file_extend+0x215/0x1d70 [ 85.839030][ T5320] ? __pfx___mutex_lock+0x10/0x10 [ 85.839046][ T5320] ? lockdep_unlock+0x5d/0xd0 [ 85.839058][ T5320] ? __lock_acquire+0x146e/0x2cf0 [ 85.839070][ T5320] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 85.839085][ T5320] hfsplus_file_extend+0x215/0x1d70 [ 85.839101][ T5320] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.839115][ T5320] ? __pfx___mutex_trylock_common+0x10/0x10 [ 85.839131][ T5320] ? rcu_is_watching+0x15/0xb0 [ 85.839146][ T5320] ? trace_contention_end+0x3d/0x150 [ 85.839162][ T5320] ? __asan_memset+0x22/0x50 [ 85.839176][ T5320] ? hfsplus_brec_find+0x19d/0x520 [ 85.839189][ T5320] hfsplus_bmap_reserve+0x125/0x510 [ 85.839208][ T5320] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 85.839224][ T5320] __hfsplus_ext_cache_extent+0x89/0xe30 [ 85.839240][ T5320] hfsplus_file_extend+0x4af/0x1d70 [ 85.839257][ T5320] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.839272][ T5320] ? clean_bdev_aliases+0x62e/0x750 [ 85.839289][ T5320] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 85.839304][ T5320] hfsplus_get_block+0x42c/0x1670 [ 85.839320][ T5320] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.839334][ T5320] ? do_raw_spin_unlock+0x4d/0x210 [ 85.839346][ T5320] ? _raw_spin_unlock+0x28/0x50 [ 85.839360][ T5320] __block_write_begin_int+0x6c6/0x1910 [ 85.839376][ T5320] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.839385][ T5320] ? __pfx___block_write_begin_int+0x10/0x10 [ 85.839397][ T5320] cont_write_begin+0x737/0xae0 [ 85.839411][ T5320] ? irqentry_exit+0x59e/0x620 [ 85.839428][ T5320] ? __pfx_cont_write_begin+0x10/0x10 [ 85.839447][ T5320] hfsplus_write_begin+0x66/0xb0 [ 85.839458][ T5320] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.839473][ T5320] generic_perform_write+0x2e2/0x8f0 [ 85.839486][ T5320] ? __pfx_generic_perform_write+0x10/0x10 [ 85.839503][ T5320] ? file_update_time_flags+0x219/0x4a0 [ 85.839519][ T5320] ? __generic_file_write_iter+0xf9/0x230 [ 85.839526][ T5320] ? generic_file_write_iter+0x136/0x680 [ 85.839532][ T5320] generic_file_write_iter+0x14a/0x680 [ 85.839539][ T5320] ? __pfx_generic_file_write_iter+0x10/0x10 [ 85.839546][ T5320] ? __lock_acquire+0x6b5/0x2cf0 [ 85.839554][ T5320] ? lockdep_hardirqs_on+0x7a/0x110 [ 85.839563][ T5320] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 85.839573][ T5320] ? stack_depot_save_flags+0x3f3/0x810 [ 85.839633][ T5320] ? kasan_save_track+0x4f/0x80 [ 85.839648][ T5320] ? kasan_save_track+0x3e/0x80 [ 85.839664][ T5320] ? aio_write+0x547/0x870 [ 85.839680][ T5320] aio_write+0x5cd/0x870 [ 85.839694][ T5320] ? __pfx_aio_write+0x10/0x10 [ 85.839714][ T5320] io_submit_one+0x7bb/0x14c0 [ 85.839729][ T5320] ? irqentry_exit+0x59e/0x620 [ 85.839743][ T5320] ? trace_irq_disable+0x3b/0x150 [ 85.839759][ T5320] ? __pfx_io_submit_one+0x10/0x10 [ 85.839777][ T5320] ? __might_fault+0xaf/0x130 [ 85.839791][ T5320] __se_sys_io_submit+0x195/0x340 [ 85.839804][ T5320] ? __pfx___se_sys_io_submit+0x10/0x10 [ 85.839821][ T5320] do_syscall_64+0x14d/0xf80 [ 85.839835][ T5320] ? trace_irq_disable+0x3b/0x150 [ 85.839848][ T5320] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.839859][ T5320] ? clear_bhb_loop+0x40/0x90 [ 85.839871][ T5320] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.839884][ T5320] RIP: 0033:0x7f0d5a99c629 [ 85.839918][ T5320] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 85.839928][ T5320] RSP: 002b:00007f0d5b7a3028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 85.839942][ T5320] RAX: ffffffffffffffda RBX: 00007f0d5ac15fa0 RCX: 00007f0d5a99c629 [ 85.839951][ T5320] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f0d5b759000 [ 85.839959][ T5320] RBP: 00007f0d5aa32b39 R08: 0000000000000000 R09: 0000000000000000 [ 85.839965][ T5320] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.839979][ T5320] R13: 00007f0d5ac16038 R14: 00007f0d5ac15fa0 R15: 00007ffd722eb838 [ 85.839991][ T5320] [ 86.043122][ T45] Bluetooth: hci0: command tx timeout