program: syz_init_net_socket$802154_raw(0x24, 0x3, 0x0) r0 = socket$nl_sock_diag(0x10, 0x3, 0x4) getsockopt$netlink(r0, 0x10e, 0x8, &(0x7f0000000300)=""/74, &(0x7f00000001c0)=0x4a) socket(0x10, 0x3, 0x0) (async) r1 = socket(0x10, 0x3, 0x0) socket$nl_route(0x10, 0x3, 0x0) (async) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = socket(0x10, 0x3, 0x0) socket(0x10, 0x803, 0x0) (async) r4 = socket(0x10, 0x803, 0x0) syz_genetlink_get_family_id$mptcp(&(0x7f00000000c0), r4) getsockname$packet(r4, &(0x7f00000001c0)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @broadcast}, &(0x7f0000000100)=0x14) sendmsg$nl_route_sched(r3, &(0x7f0000005840)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000020c0)=@newqdisc={0x44, 0x24, 0x5820a61ca228651, 0x0, 0x0, {0x0, 0x0, 0x0, r5, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_hfsc={{0x9}, {0x14, 0x2, @TCA_HFSC_RSC={0x10, 0x1, {0x2, 0x2, 0x6}}}}]}, 0x44}}, 0x0) (async) sendmsg$nl_route_sched(r3, &(0x7f0000005840)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000020c0)=@newqdisc={0x44, 0x24, 0x5820a61ca228651, 0x0, 0x0, {0x0, 0x0, 0x0, r5, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_hfsc={{0x9}, {0x14, 0x2, @TCA_HFSC_RSC={0x10, 0x1, {0x2, 0x2, 0x6}}}}]}, 0x44}}, 0x0) sendmsg$nl_route_sched(r2, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000002880)=@newtfilter={0x48, 0x28, 0x43f, 0x0, 0x100, {0x0, 0x0, 0x0, r5, {0xfff1}, {}, {0x3}}, [@filter_kind_options=@f_fw={{0x7}, {0x14, 0x2, [@TCA_FW_POLICE={0x10, 0x2, [@TCA_POLICE_RATE64={0xc, 0x8, 0x5}]}]}}, @TCA_RATE={0x6, 0x5, {0x0, 0x4}}]}, 0x48}}, 0x0) sendmmsg$alg(r1, &(0x7f0000000140), 0x4924b68, 0x0) syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r6 = creat(&(0x7f0000000240)='./file1\x00', 0x61) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r7, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r6, &(0x7f0000000000), 0x70000}]) bpf$PROG_LOAD(0x5, 0x0, 0x0) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, 0x0, 0x0) (async) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, 0x0, 0x0) openat$dir(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x220000, 0x8) socket$inet6_tcp(0xa, 0x1, 0x0) (async) r8 = socket$inet6_tcp(0xa, 0x1, 0x0) bind$inet6(r8, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c) listen(r8, 0x3) syz_emit_ethernet(0x66, &(0x7f0000000040)={@multicast, @empty, @void, {@ipv6={0x86dd, @udp={0x0, 0x6, "76b2af", 0x4, 0x2f, 0x0, @private0, @mcast2, {[], {0x0, 0x883e, 0x30, 0x0, @gue={{0x2}, "af963a8d459d3bc5643aa137774226737118865c4e84f9be74295da403ad3c39"}}}}}}}, 0x0) setsockopt$inet6_tcp_TCP_MD5SIG(r8, 0x6, 0xe, &(0x7f00000000c0)={@in={{0x2, 0x4e22, @multicast1}}, 0x0, 0x0, 0x16, 0x0, "e02095c002c037e2b12f5b579b2d0a59372a3b4979c475e0b90034e90080d7244b24a1e6fd6c4be86f419c41a187ce115802f18f9b5fb65980f087a56e757d6a49ce08e7aea8fda6b0bc25da0340e01a"}, 0xd8) (async) setsockopt$inet6_tcp_TCP_MD5SIG(r8, 0x6, 0xe, &(0x7f00000000c0)={@in={{0x2, 0x4e22, @multicast1}}, 0x0, 0x0, 0x16, 0x0, "e02095c002c037e2b12f5b579b2d0a59372a3b4979c475e0b90034e90080d7244b24a1e6fd6c4be86f419c41a187ce115802f18f9b5fb65980f087a56e757d6a49ce08e7aea8fda6b0bc25da0340e01a"}, 0xd8) r9 = socket$inet6_tcp(0xa, 0x1, 0x0) sendto$inet6(r9, 0x0, 0x0, 0x240540c7, &(0x7f0000000200)={0xa, 0x4e22, 0x0, @loopback}, 0x1c) (async) sendto$inet6(r9, 0x0, 0x0, 0x240540c7, &(0x7f0000000200)={0xa, 0x4e22, 0x0, @loopback}, 0x1c) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, 0x0, 0x0) (async) r10 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, 0x0, 0x0) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000002c0)={&(0x7f00000001c0)='kmem_cache_free\x00', r10}, 0x10) accept4(r8, 0x0, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="0703000000000000000040000100000000000000", @ANYRES32, @ANYBLOB='\x00'/20, @ANYRES32=0x0, @ANYRES32, @ANYBLOB='\x00'/28], 0x48) (async) bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="0703000000000000000040000100000000000000", @ANYRES32, @ANYBLOB='\x00'/20, @ANYRES32=0x0, @ANYRES32, @ANYBLOB='\x00'/28], 0x48) [ 67.650748][ T5324] netlink: 4 bytes leftover after parsing attributes in process `syz.0.0'. [ 67.672555][ T4670] Bluetooth: hci0: command tx timeout [ 67.712060][ T5323] Zero length message leads to an empty skb [ 67.727697][ T5323] loop0: detected capacity change from 0 to 1024 [ 67.802464][ T5323] [ 67.803607][ T5323] ============================================ [ 67.806477][ T5323] WARNING: possible recursive locking detected [ 67.809356][ T5323] 6.16.0-rc3-syzkaller-00044-g7595b66ae9de #0 Not tainted [ 67.812439][ T5323] -------------------------------------------- [ 67.815077][ T5323] syz.0.0/5323 is trying to acquire lock: [ 67.817597][ T5323] ffff888052e14108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 67.822369][ T5323] [ 67.822369][ T5323] but task is already holding lock: [ 67.825786][ T5323] ffff888052e16988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 67.830768][ T5323] [ 67.830768][ T5323] other info that might help us debug this: [ 67.834300][ T5323] Possible unsafe locking scenario: [ 67.834300][ T5323] [ 67.837476][ T5323] CPU0 [ 67.839012][ T5323] ---- [ 67.840471][ T5323] lock(&HFSPLUS_I(inode)->extents_lock); [ 67.843407][ T5323] lock(&HFSPLUS_I(inode)->extents_lock); [ 67.846164][ T5323] [ 67.846164][ T5323] *** DEADLOCK *** [ 67.846164][ T5323] [ 67.849295][ T5323] May be due to missing lock nesting notation [ 67.849295][ T5323] [ 67.852801][ T5323] 3 locks held by syz.0.0/5323: [ 67.854832][ T5323] #0: ffff888052e16b78 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: generic_file_write_iter+0xe3/0x540 [ 67.859755][ T5323] #1: ffff888052e16988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1fc/0x1990 [ 67.864639][ T5323] #2: ffff8880356080b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x15a/0x1d0 [ 67.869325][ T5323] [ 67.869325][ T5323] stack backtrace: [ 67.871907][ T5323] CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.16.0-rc3-syzkaller-00044-g7595b66ae9de #0 PREEMPT(full) [ 67.871923][ T5323] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 67.871930][ T5323] Call Trace: [ 67.871938][ T5323] [ 67.871944][ T5323] dump_stack_lvl+0x189/0x250 [ 67.871965][ T5323] ? __pfx_dump_stack_lvl+0x10/0x10 [ 67.871979][ T5323] ? __pfx__printk+0x10/0x10 [ 67.871990][ T5323] ? print_lock_name+0xde/0x100 [ 67.872000][ T5323] print_deadlock_bug+0x28b/0x2a0 [ 67.872011][ T5323] validate_chain+0x1a3f/0x2140 [ 67.872020][ T5323] ? check_path+0x21/0x40 [ 67.872027][ T5323] ? check_noncircular+0xe0/0x160 [ 67.872036][ T5323] ? look_up_lock_class+0x74/0x170 [ 67.872102][ T5323] ? register_lock_class+0x51/0x320 [ 67.872114][ T5323] __lock_acquire+0xab9/0xd20 [ 67.872127][ T5323] ? hfsplus_file_extend+0x1fc/0x1990 [ 67.872138][ T5323] lock_acquire+0x120/0x360 [ 67.872149][ T5323] ? hfsplus_file_extend+0x1fc/0x1990 [ 67.872162][ T5323] __mutex_lock+0x182/0xe80 [ 67.872177][ T5323] ? hfsplus_file_extend+0x1fc/0x1990 [ 67.872188][ T5323] ? check_path+0x21/0x40 [ 67.872195][ T5323] ? check_noncircular+0xe0/0x160 [ 67.872203][ T5323] ? hfsplus_file_extend+0x1fc/0x1990 [ 67.872215][ T5323] ? __pfx___mutex_lock+0x10/0x10 [ 67.872230][ T5323] hfsplus_file_extend+0x1fc/0x1990 [ 67.872243][ T5323] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 67.872254][ T5323] ? __mutex_trylock_common+0x153/0x260 [ 67.872263][ T5323] ? __pfx___mutex_trylock_common+0x10/0x10 [ 67.872280][ T5323] ? rcu_is_watching+0x15/0xb0 [ 67.872296][ T5323] ? trace_contention_end+0x39/0x120 [ 67.872305][ T5323] ? __mutex_lock+0x330/0xe80 [ 67.872317][ T5323] ? hfsplus_brec_find+0x191/0x500 [ 67.872327][ T5323] hfsplus_bmap_reserve+0x122/0x500 [ 67.872342][ T5323] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 67.872356][ T5323] __hfsplus_ext_cache_extent+0x89/0xe30 [ 67.872369][ T5323] hfsplus_file_extend+0x444/0x1990 [ 67.872382][ T5323] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 67.872394][ T5323] ? clean_bdev_aliases+0x5c9/0x6b0 [ 67.872407][ T5323] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 67.872420][ T5323] hfsplus_get_block+0x411/0x1530 [ 67.872432][ T5323] ? __pfx_hfsplus_get_block+0x10/0x10 [ 67.872443][ T5323] ? do_raw_spin_unlock+0x4d/0x240 [ 67.872454][ T5323] ? _raw_spin_unlock+0x28/0x50 [ 67.872467][ T5323] __block_write_begin_int+0x6b5/0x1900 [ 67.872481][ T5323] ? folio_add_lru+0x1b2/0x3d0 [ 67.872493][ T5323] ? __pfx_hfsplus_get_block+0x10/0x10 [ 67.872504][ T5323] ? __pfx___block_write_begin_int+0x10/0x10 [ 67.872518][ T5323] cont_write_begin+0x789/0xb50 [ 67.872531][ T5323] ? __pfx_cont_write_begin+0x10/0x10 [ 67.872542][ T5323] ? __pfx___might_resched+0x10/0x10 [ 67.872557][ T5323] ? folio_unlock+0x101/0x160 [ 67.872567][ T5323] hfsplus_write_begin+0x66/0xb0 [ 67.872577][ T5323] ? __pfx_hfsplus_get_block+0x10/0x10 [ 67.872589][ T5323] generic_perform_write+0x2c7/0x910 [ 67.872604][ T5323] ? __pfx_generic_perform_write+0x10/0x10 [ 67.872647][ T5323] ? file_update_time+0x2da/0x490 [ 67.872660][ T5323] ? __generic_file_write_iter+0xf9/0x230 [ 67.872672][ T5323] ? generic_file_write_iter+0xfb/0x540 [ 67.872685][ T5323] generic_file_write_iter+0x10f/0x540 [ 67.872696][ T5323] ? aa_file_perm+0x11f/0xed0 [ 67.872710][ T5323] ? __pfx_generic_file_write_iter+0x10/0x10 [ 67.872725][ T5323] ? __lock_acquire+0xab9/0xd20 [ 67.872743][ T5323] ? aio_write+0x4c4/0x7a0 [ 67.872756][ T5323] aio_write+0x532/0x7a0 [ 67.872767][ T5323] ? __pfx_aio_write+0x10/0x10 [ 67.872779][ T5323] ? __might_fault+0xb0/0x130 [ 67.872792][ T5323] io_submit_one+0x78b/0x1310 [ 67.872805][ T5323] ? __pfx_io_submit_one+0x10/0x10 [ 67.872815][ T5323] ? __might_fault+0xb0/0x130 [ 67.872825][ T5323] ? __might_fault+0xb0/0x130 [ 67.872835][ T5323] __se_sys_io_submit+0x185/0x2f0 [ 67.872844][ T5323] ? __pfx___se_sys_io_submit+0x10/0x10 [ 67.872854][ T5323] ? do_syscall_64+0xbe/0x3b0 [ 67.872865][ T5323] do_syscall_64+0xfa/0x3b0 [ 67.872873][ T5323] ? lockdep_hardirqs_on+0x9c/0x150 [ 67.872886][ T5323] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 67.872896][ T5323] ? clear_bhb_loop+0x60/0xb0 [ 67.872905][ T5323] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 67.872915][ T5323] RIP: 0033:0x7f4498b8e929 [ 67.872927][ 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 [ 67.872935][ T5323] RSP: 002b:00007f4499a06038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 67.872947][ T5323] RAX: ffffffffffffffda RBX: 00007f4498db5fa0 RCX: 00007f4498b8e929 [ 67.872955][ T5323] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f44999bc000 [ 67.872961][ T5323] RBP: 00007f4498c10b39 R08: 0000000000000000 R09: 0000000000000000 [ 67.872967][ T5323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 67.872971][ T5323] R13: 0000000000000000 R14: 00007f4498db5fa0 R15: 00007ffcc70df0f8 [ 67.872980][ T5323]