program: r0 = syz_open_dev$dmmidi(&(0x7f0000000180), 0x9, 0x8000) r1 = socket$packet(0x11, 0x2, 0x300) r2 = ioctl$NS_GET_PARENT(0xffffffffffffffff, 0xb702, 0x0) r3 = syz_open_dev$vivid(&(0x7f00000001c0), 0x1, 0x2) r4 = syz_open_procfs$pagemap(0xffffffffffffffff, &(0x7f0000000240)) r5 = syz_init_net_socket$bt_hidp(0x1f, 0x3, 0x6) r6 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r6, &(0x7f00000004c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000240)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a28000000000a010400000000000000000100000008000240000000020900010073797a300000000014000000110001"], 0x50}}, 0x0) io_uring_register$IORING_REGISTER_FILES_UPDATE(0xffffffffffffffff, 0x6, &(0x7f00000002c0)={0x4, 0x0, &(0x7f0000000280)=[r0, r1, r2, 0xffffffffffffffff, r3, r4, r5, r6]}, 0x8) syz_mount_image$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==") r7 = creat(&(0x7f0000000000)='./file1\x00', 0x1b1) r8 = socket$kcm(0x10, 0x2, 0x0) r9 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route(r9, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000009c0)=ANY=[@ANYBLOB="2800000010005fba00"/20, @ANYRES32=0x0, @ANYBLOB="80000200"/16], 0x28}}, 0x0) r10 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route(r10, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)=ANY=[@ANYBLOB="4c0000001000010800"/20, @ANYRES32=0x0, @ANYBLOB="000004001004000024001a80200002801c00018008001a00060000000800160002000000080010000004000008001b"], 0x4c}, 0x1, 0x0, 0x0, 0x1}, 0x0) sendmsg$kcm(r8, &(0x7f0000000600)={0x0, 0xfe80, &(0x7f00000005c0)=[{&(0x7f0000000940)="2e00000010008188e6b62aa73772cc9f1ba1f8482e0000005e140602000000000e000a001000000002800000128c", 0x2e}], 0x1}, 0x0) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r11, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r7, &(0x7f0000000000), 0x70000}]) [ 85.480196][ T4658] Bluetooth: hci0: command tx timeout [ 85.565944][ T5313] loop0: detected capacity change from 0 to 1024 [ 85.633333][ T5313] netlink: 8 bytes leftover after parsing attributes in process `syz.0.0'. [ 85.658640][ T5313] netlink: 'syz.0.0': attribute type 10 has an invalid length. [ 85.670213][ T5313] team0: Device hsr_slave_0 failed to register rx_handler [ 85.691687][ T5313] [ 85.692833][ T5313] ============================================ [ 85.695438][ T5313] WARNING: possible recursive locking detected [ 85.698035][ T5313] 6.15.0-rc4-syzkaller-00296-ge8ab83e34bdc #0 Not tainted [ 85.700922][ T5313] -------------------------------------------- [ 85.703691][ T5313] syz.0.0/5313 is trying to acquire lock: [ 85.706195][ T5313] ffff8880421e0108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 85.710931][ T5313] [ 85.710931][ T5313] but task is already holding lock: [ 85.714314][ T5313] ffff8880421e2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 85.718962][ T5313] [ 85.718962][ T5313] other info that might help us debug this: [ 85.722263][ T5313] Possible unsafe locking scenario: [ 85.722263][ T5313] [ 85.725564][ T5313] CPU0 [ 85.727009][ T5313] ---- [ 85.728423][ T5313] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.730973][ T5313] lock(&HFSPLUS_I(inode)->extents_lock); [ 85.733466][ T5313] [ 85.733466][ T5313] *** DEADLOCK *** [ 85.733466][ T5313] [ 85.737033][ T5313] May be due to missing lock nesting notation [ 85.737033][ T5313] [ 85.740685][ T5313] 3 locks held by syz.0.0/5313: [ 85.743302][ T5313] #0: ffff8880421e2b78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xe3/0x540 [ 85.748152][ T5313] #1: ffff8880421e2988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 85.752990][ T5313] #2: ffff8880377a40b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 [ 85.757344][ T5313] [ 85.757344][ T5313] stack backtrace: [ 85.759861][ T5313] CPU: 0 UID: 0 PID: 5313 Comm: syz.0.0 Not tainted 6.15.0-rc4-syzkaller-00296-ge8ab83e34bdc #0 PREEMPT(full) [ 85.759876][ T5313] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.759883][ T5313] Call Trace: [ 85.759890][ T5313] [ 85.759895][ T5313] dump_stack_lvl+0x189/0x250 [ 85.759915][ T5313] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.759930][ T5313] ? __pfx__printk+0x10/0x10 [ 85.759942][ T5313] ? print_lock_name+0xde/0x100 [ 85.759964][ T5313] print_deadlock_bug+0x28b/0x2a0 [ 85.759976][ T5313] validate_chain+0x1a3f/0x2140 [ 85.759986][ T5313] ? unwind_next_frame+0xa5/0x2390 [ 85.759997][ T5313] ? check_path+0x21/0x40 [ 85.760006][ T5313] ? check_noncircular+0xe0/0x160 [ 85.760015][ T5313] ? look_up_lock_class+0x74/0x170 [ 85.760071][ T5313] ? register_lock_class+0x51/0x320 [ 85.760086][ T5313] __lock_acquire+0xaac/0xd20 [ 85.760100][ T5313] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.760114][ T5313] lock_acquire+0x120/0x360 [ 85.760127][ T5313] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.760141][ T5313] __mutex_lock+0x182/0xe80 [ 85.760151][ T5313] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.760164][ T5313] ? check_path+0x21/0x40 [ 85.760173][ T5313] ? check_noncircular+0xe0/0x160 [ 85.760182][ T5313] ? hfsplus_file_extend+0x1fc/0x1990 [ 85.760195][ T5313] ? __pfx___mutex_lock+0x10/0x10 [ 85.760210][ T5313] hfsplus_file_extend+0x1fc/0x1990 [ 85.760224][ T5313] ? __lock_acquire+0xaac/0xd20 [ 85.760236][ T5313] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.760247][ T5313] ? __mutex_trylock_common+0x153/0x260 [ 85.760258][ T5313] ? __pfx___mutex_trylock_common+0x10/0x10 [ 85.760268][ T5313] ? rcu_is_watching+0x15/0xb0 [ 85.760284][ T5313] ? trace_contention_end+0x39/0x120 [ 85.760294][ T5313] ? __mutex_lock+0x330/0xe80 [ 85.760304][ T5313] ? hfsplus_brec_find+0x191/0x500 [ 85.760316][ T5313] hfsplus_bmap_reserve+0x122/0x500 [ 85.760333][ T5313] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 85.760347][ T5313] __hfsplus_ext_cache_extent+0x89/0xe30 [ 85.760362][ T5313] hfsplus_file_extend+0x444/0x1990 [ 85.760377][ T5313] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 85.760391][ T5313] ? clean_bdev_aliases+0x5c9/0x6b0 [ 85.760407][ T5313] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 85.760421][ T5313] hfsplus_get_block+0x411/0x1530 [ 85.760436][ T5313] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.760449][ T5313] ? do_raw_spin_unlock+0x4d/0x240 [ 85.760461][ T5313] ? _raw_spin_unlock+0x28/0x50 [ 85.760471][ T5313] __block_write_begin_int+0x6b2/0x1900 [ 85.760487][ T5313] ? folio_add_lru+0x1b3/0x3d0 [ 85.760497][ T5313] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.760510][ T5313] ? __pfx___block_write_begin_int+0x10/0x10 [ 85.760527][ T5313] cont_write_begin+0x789/0xb50 [ 85.760544][ T5313] ? __pfx_cont_write_begin+0x10/0x10 [ 85.760559][ T5313] ? __pfx___might_resched+0x10/0x10 [ 85.760569][ T5313] ? folio_unlock+0x101/0x160 [ 85.760584][ T5313] hfsplus_write_begin+0x66/0xb0 [ 85.760595][ T5313] ? __pfx_hfsplus_get_block+0x10/0x10 [ 85.760642][ T5313] generic_perform_write+0x2c4/0x910 [ 85.760658][ T5313] ? __pfx_generic_perform_write+0x10/0x10 [ 85.760668][ T5313] ? file_update_time+0x2da/0x490 [ 85.760683][ T5313] ? __generic_file_write_iter+0xf9/0x230 [ 85.760692][ T5313] ? generic_file_write_iter+0xfb/0x540 [ 85.760702][ T5313] generic_file_write_iter+0x10f/0x540 [ 85.760713][ T5313] ? aa_file_perm+0x11f/0xed0 [ 85.760725][ T5313] ? __pfx_generic_file_write_iter+0x10/0x10 [ 85.760738][ T5313] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 85.760749][ T5313] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 85.760762][ T5313] ? __lock_acquire+0xaac/0xd20 [ 85.760778][ T5313] ? aio_write+0x4c4/0x790 [ 85.760791][ T5313] aio_write+0x532/0x790 [ 85.760803][ T5313] ? __pfx_aio_write+0x10/0x10 [ 85.760817][ T5313] ? __might_fault+0xb0/0x130 [ 85.760832][ T5313] io_submit_one+0x70a/0x1240 [ 85.760844][ T5313] ? __lock_acquire+0xaac/0xd20 [ 85.760857][ T5313] ? __pfx_io_submit_one+0x10/0x10 [ 85.760869][ T5313] ? __might_fault+0xb0/0x130 [ 85.760883][ T5313] ? __might_fault+0xb0/0x130 [ 85.760895][ T5313] __se_sys_io_submit+0x185/0x2f0 [ 85.760906][ T5313] ? __pfx___se_sys_io_submit+0x10/0x10 [ 85.760918][ T5313] ? do_syscall_64+0xba/0x210 [ 85.760930][ T5313] do_syscall_64+0xf6/0x210 [ 85.760941][ T5313] ? clear_bhb_loop+0x45/0xa0 [ 85.760963][ T5313] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.760974][ T5313] RIP: 0033:0x7fa46f58e969 [ 85.760985][ T5313] 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 [ 85.760995][ T5313] RSP: 002b:00007fa47044c038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 85.761006][ T5313] RAX: ffffffffffffffda RBX: 00007fa46f7b5fa0 RCX: 00007fa46f58e969 [ 85.761014][ T5313] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007fa470402000 [ 85.761021][ T5313] RBP: 00007fa46f610ab1 R08: 0000000000000000 R09: 0000000000000000 [ 85.761027][ T5313] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.761033][ T5313] R13: 0000000000000000 R14: 00007fa46f7b5fa0 R15: 00007ffdc9b8e718 [ 85.761042][ T5313]