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(&(0x7f0000000000)='./file1\x00', 0x8d) io_setup(0x202, &(0x7f0000000200)=0x0) mmap(&(0x7f0000ffb000/0x2000)=nil, 0x2000, 0xa, 0x14010, r0, 0xd8675000) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 85.011328][ T5300] Bluetooth: hci0: command tx timeout [ 85.126349][ T5323] loop0: detected capacity change from 0 to 1024 [ 85.244952][ T5323] [ 85.246197][ T5323] ============================================ [ 85.249012][ T5323] WARNING: possible recursive locking detected [ 85.251637][ T5323] syzkaller #0 Not tainted [ 85.253466][ T5323] -------------------------------------------- [ 85.255935][ T5323] syz.0.0/5323 is trying to acquire lock: [ 85.258129][ T5323] ffff888041f9c108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 85.262723][ T5323] [ 85.262723][ T5323] but task is already holding lock: [ 85.265622][ T5323] ffff888041f9e988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 85.270210][ T5323] [ 85.270210][ T5323] other info that might help us debug this: [ 85.273600][ T5323] Possible unsafe locking scenario: [ 85.273600][ T5323] [ 85.276684][ T5323] CPU0 [ 85.278068][ T5323] ---- [ 85.279604][ T5323] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.282104][ T5323] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.284585][ T5323] [ 85.284585][ T5323] *** DEADLOCK *** [ 85.284585][ T5323] [ 85.287965][ T5323] May be due to missing lock nesting notation [ 85.287965][ T5323] [ 85.291596][ T5323] 3 locks held by syz.0.0/5323: [ 85.293699][ T5323] #0: ffff888041f9eb78 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680 [ 85.298205][ T5323] #1: ffff888041f9e988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 85.302883][ T5323] #2: ffff888011f500b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 85.306806][ T5323] [ 85.306806][ T5323] stack backtrace: [ 85.309156][ T5323] CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.309173][ T5323] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 85.309230][ T5323] Call Trace: [ 85.309240][ T5323] [ 85.309246][ T5323] dump_stack_lvl+0xe8/0x150 [ 85.309292][ T5323] print_deadlock_bug+0x279/0x290 [ 85.309328][ T5323] __lock_acquire+0x253f/0x2cf0 [ 85.309349][ T5323] ? unwind_next_frame+0xa5/0x23c0 [ 85.309363][ T5323] ? __bfs+0x153/0x290 [ 85.309379][ T5323] ? __pfx_hlock_conflict+0x10/0x10 [ 85.309392][ T5323] ? hfsplus_file_extend+0x215/0x1d70 [ 85.309411][ T5323] lock_acquire+0x106/0x330 [ 85.309427][ T5323] ? hfsplus_file_extend+0x215/0x1d70 [ 85.309448][ T5323] __mutex_lock+0x19f/0x1300 [ 85.309635][ T5323] ? hfsplus_file_extend+0x215/0x1d70 [ 85.309653][ T5323] ? __bfs+0x153/0x290 [ 85.309668][ T5323] ? __pfx_hlock_conflict+0x10/0x10 [ 85.309679][ T5323] ? hfsplus_file_extend+0x215/0x1d70 [ 85.309694][ T5323] ? check_path+0x21/0x40 [ 85.309702][ T5323] ? check_noncircular+0xda/0x150 [ 85.309712][ T5323] ? __pfx___mutex_lock+0x10/0x10 [ 85.309725][ T5323] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 85.309743][ T5323] hfsplus_file_extend+0x215/0x1d70 [ 85.309761][ T5323] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.309777][ T5323] ? __pfx___mutex_trylock_common+0x10/0x10 [ 85.309791][ T5323] ? rcu_is_watching+0x15/0xb0 [ 85.309803][ T5323] ? trace_contention_end+0x39/0x100 [ 85.309814][ T5323] ? __asan_memset+0x22/0x50 [ 85.309850][ T5323] ? hfsplus_brec_find+0x19d/0x520 [ 85.309866][ T5323] hfsplus_bmap_reserve+0x125/0x510 [ 85.309883][ T5323] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 85.309895][ T5323] __hfsplus_ext_cache_extent+0x89/0xe30 [ 85.309907][ T5323] hfsplus_file_extend+0x4af/0x1d70 [ 85.309932][ T5323] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.309951][ T5323] ? clean_bdev_aliases+0x62e/0x750 [ 85.309970][ T5323] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 85.309986][ T5323] hfsplus_get_block+0x42c/0x1670 [ 85.310005][ T5323] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.310020][ T5323] ? do_raw_spin_unlock+0x4d/0x210 [ 85.310033][ T5323] ? _raw_spin_unlock+0x28/0x50 [ 85.310050][ T5323] __block_write_begin_int+0x6c6/0x1910 [ 85.310067][ T5323] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.310083][ T5323] ? __pfx___block_write_begin_int+0x10/0x10 [ 85.310100][ T5323] cont_write_begin+0x737/0xae0 [ 85.310114][ T5323] ? irqentry_exit+0x59c/0x620 [ 85.310127][ T5323] ? __pfx_cont_write_begin+0x10/0x10 [ 85.310145][ T5323] hfsplus_write_begin+0x66/0xb0 [ 85.310162][ T5323] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.310180][ T5323] generic_perform_write+0x2e2/0x8f0 [ 85.310197][ T5323] ? __pfx_generic_perform_write+0x10/0x10 [ 85.310209][ T5323] ? file_update_time_flags+0x2cb/0x4d0 [ 85.310224][ T5323] ? __generic_file_write_iter+0xf9/0x230 [ 85.310235][ T5323] ? generic_file_write_iter+0x136/0x680 [ 85.310247][ T5323] generic_file_write_iter+0x14a/0x680 [ 85.310261][ T5323] ? __pfx_generic_file_write_iter+0x10/0x10 [ 85.310273][ T5323] ? __lock_acquire+0x6b5/0x2cf0 [ 85.310290][ T5323] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 85.310308][ T5323] ? lockdep_hardirqs_on+0x7a/0x110 [ 85.310320][ T5323] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 85.310337][ T5323] ? stack_depot_save_flags+0x3f3/0x810 [ 85.310536][ T5323] ? io_submit_one+0x7bb/0x14c0 [ 85.310555][ T5323] ? aio_write+0x547/0x870 [ 85.310570][ T5323] aio_write+0x5cd/0x870 [ 85.310585][ T5323] ? __pfx_aio_write+0x10/0x10 [ 85.310609][ T5323] ? __might_fault+0xaf/0x130 [ 85.310627][ T5323] io_submit_one+0x7bb/0x14c0 [ 85.310639][ T5323] ? irqentry_exit+0x59c/0x620 [ 85.310652][ T5323] ? __pfx_io_submit_one+0x10/0x10 [ 85.310666][ T5323] ? __might_fault+0xaf/0x130 [ 85.310682][ T5323] ? __might_fault+0xaf/0x130 [ 85.310697][ T5323] __se_sys_io_submit+0x195/0x340 [ 85.310709][ T5323] ? __pfx___se_sys_io_submit+0x10/0x10 [ 85.310723][ T5323] do_syscall_64+0xe2/0xf80 [ 85.310735][ T5323] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.310768][ T5323] ? trace_irq_disable+0x37/0x100 [ 85.310781][ T5323] ? clear_bhb_loop+0x60/0xb0 [ 85.310794][ T5323] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.310806][ T5323] RIP: 0033:0x7fe46cd9aeb9 [ 85.310819][ T5323] 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 [ 85.310828][ T5323] RSP: 002b:00007fe46dc48028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 85.310841][ T5323] RAX: ffffffffffffffda RBX: 00007fe46d015fa0 RCX: 00007fe46cd9aeb9 [ 85.310850][ T5323] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007fe46dbfe000 [ 85.310858][ T5323] RBP: 00007fe46ce08c1f R08: 0000000000000000 R09: 0000000000000000 [ 85.310865][ T5323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.310872][ T5323] R13: 00007fe46d016038 R14: 00007fe46d015fa0 R15: 00007ffc7c969928 [ 85.310885][ T5323]