program: syz_mount_image$hfsplus(&(0x7f0000000100), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = creat(&(0x7f0000000180)='./file1\x00', 0x0) r1 = socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000000), 0xffffffffffffffff) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$sock_SIOCGIFINDEX_80211(r3, 0x8933, &(0x7f0000000040)={'wlan0\x00', 0x0}) r5 = bpf$MAP_CREATE(0x100000000000000, &(0x7f0000000140)=@base={0xa, 0x16, 0xb3, 0x7f}, 0x48) r6 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) ioctl$sock_bt_hci(r6, 0x400448ca, 0x0) ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="1700000007"], 0x50) r7 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) bind$bt_hci(r7, &(0x7f0000000100)={0x1f, 0xffff, 0x3}, 0x6) write$binfmt_misc(r7, &(0x7f0000000000), 0xd) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000440)={0x11, 0xb, &(0x7f0000000080)=@framed={{0x18, 0x3, 0x0, 0x0, 0x1000}, [@func={0x85, 0x0, 0x1, 0x0, 0x6}, @map_fd={0x18, 0x0, 0x1, 0x0, r5}, @generic={0x66}, @initr0, @exit, @alu={0x4, 0x0, 0x9, 0x3, 0x0, 0x0, 0xffffffffffffffff}]}, &(0x7f0000000000)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) r8 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000400), 0x0, 0x0) ioctl$TIOCSETD(r8, 0x5423, &(0x7f0000000040)=0x14) ioctl$TIOCSETD(r8, 0x5423, &(0x7f00000000c0)=0x3) ioctl$TIOCVHANGUP(r8, 0x5437, 0x0) sendmsg$NL80211_CMD_JOIN_IBSS(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000080)=ANY=[@ANYBLOB=',\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="010100000000000000002b00000008000300", @ANYRES32=r4, @ANYBLOB="100000"], 0x2c}}, 0x0) ioctl$CDROMSEEK(r0, 0x5316, &(0x7f0000000140)={0x5, 0x3, 0x4, 0x4, 0xb5, 0x3}) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r9, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) ioctl$KVM_CREATE_PIT2(r0, 0x4040ae77, &(0x7f0000000040)) [ 84.189900][ T5304] Bluetooth: hci0: command tx timeout [ 84.341681][ T5327] loop0: detected capacity change from 0 to 1024 [ 84.580327][ T5327] [ 84.581592][ T5327] ============================================ [ 84.585083][ T5327] WARNING: possible recursive locking detected [ 84.588009][ T5327] syzkaller #0 Not tainted [ 84.590064][ T5327] -------------------------------------------- [ 84.592669][ T5327] syz.0.0/5327 is trying to acquire lock: [ 84.595618][ T5327] ffff888011afce88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.602017][ T5327] [ 84.602017][ T5327] but task is already holding lock: [ 84.605579][ T5327] ffff888011ae62c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.610007][ T5327] [ 84.610007][ T5327] other info that might help us debug this: [ 84.613958][ T5327] Possible unsafe locking scenario: [ 84.613958][ T5327] [ 84.617794][ T5327] CPU0 [ 84.619144][ T5327] ---- [ 84.620564][ T5327] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.622986][ T5327] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.625605][ T5327] [ 84.625605][ T5327] *** DEADLOCK *** [ 84.625605][ T5327] [ 84.629723][ T5327] May be due to missing lock nesting notation [ 84.629723][ T5327] [ 84.633909][ T5327] 3 locks held by syz.0.0/5327: [ 84.635997][ T5327] #0: ffff888011ae64b8 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680 [ 84.641215][ T5327] #1: ffff888011ae62c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.647317][ T5327] #2: ffff8880356be0b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 84.651982][ T5327] [ 84.651982][ T5327] stack backtrace: [ 84.654460][ T5327] CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 84.654481][ T5327] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 84.654490][ T5327] Call Trace: [ 84.654499][ T5327] [ 84.654506][ T5327] dump_stack_lvl+0xe8/0x150 [ 84.654591][ T5327] print_deadlock_bug+0x279/0x290 [ 84.654616][ T5327] __lock_acquire+0x253f/0x2cf0 [ 84.654637][ T5327] ? unwind_next_frame+0xa5/0x23c0 [ 84.654658][ T5327] ? __bfs+0x153/0x290 [ 84.654672][ T5327] ? __pfx_hlock_conflict+0x10/0x10 [ 84.654689][ T5327] lock_acquire+0xf0/0x2e0 [ 84.654701][ T5327] ? hfsplus_file_extend+0x215/0x1d70 [ 84.654715][ T5327] __mutex_lock+0x19f/0x1300 [ 84.654768][ T5327] ? hfsplus_file_extend+0x215/0x1d70 [ 84.654782][ T5327] ? __bfs+0x153/0x290 [ 84.654800][ T5327] ? hfsplus_file_extend+0x215/0x1d70 [ 84.654815][ T5327] ? __pfx___mutex_lock+0x10/0x10 [ 84.654833][ T5327] ? lockdep_unlock+0x5d/0xd0 [ 84.654847][ T5327] ? __lock_acquire+0x146e/0x2cf0 [ 84.654863][ T5327] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 84.654878][ T5327] hfsplus_file_extend+0x215/0x1d70 [ 84.654892][ T5327] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.654904][ T5327] ? __pfx___mutex_trylock_common+0x10/0x10 [ 84.654925][ T5327] ? rcu_is_watching+0x15/0xb0 [ 84.654941][ T5327] ? trace_contention_end+0x3d/0x150 [ 84.654954][ T5327] ? __asan_memset+0x22/0x50 [ 84.654972][ T5327] ? hfsplus_brec_find+0x19d/0x520 [ 84.654989][ T5327] hfsplus_bmap_reserve+0x125/0x510 [ 84.655007][ T5327] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 84.655021][ T5327] __hfsplus_ext_cache_extent+0x89/0xe30 [ 84.655036][ T5327] hfsplus_file_extend+0x4af/0x1d70 [ 84.655050][ T5327] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.655064][ T5327] ? clean_bdev_aliases+0x62e/0x750 [ 84.655080][ T5327] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 84.655095][ T5327] hfsplus_get_block+0x42c/0x1670 [ 84.655116][ T5327] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.655128][ T5327] ? do_raw_spin_unlock+0x4d/0x210 [ 84.655141][ T5327] ? _raw_spin_unlock+0x28/0x50 [ 84.655155][ T5327] __block_write_begin_int+0x6c6/0x1910 [ 84.655173][ T5327] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.655185][ T5327] ? __pfx___block_write_begin_int+0x10/0x10 [ 84.655201][ T5327] cont_write_begin+0x737/0xae0 [ 84.655214][ T5327] ? irqentry_exit+0x59e/0x620 [ 84.655233][ T5327] ? __pfx_cont_write_begin+0x10/0x10 [ 84.655252][ T5327] hfsplus_write_begin+0x66/0xb0 [ 84.655271][ T5327] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.655283][ T5327] generic_perform_write+0x2e2/0x8f0 [ 84.655303][ T5327] ? __pfx_generic_perform_write+0x10/0x10 [ 84.655317][ T5327] ? file_update_time_flags+0x219/0x4a0 [ 84.655330][ T5327] ? __generic_file_write_iter+0xf9/0x230 [ 84.655343][ T5327] ? generic_file_write_iter+0x136/0x680 [ 84.655357][ T5327] generic_file_write_iter+0x14a/0x680 [ 84.655370][ T5327] ? __pfx_generic_file_write_iter+0x10/0x10 [ 84.655384][ T5327] ? do_raw_spin_lock+0x12b/0x2f0 [ 84.655397][ T5327] ? __lock_acquire+0x6b5/0x2cf0 [ 84.655414][ T5327] ? lockdep_hardirqs_on+0x7a/0x110 [ 84.655430][ T5327] ? kasan_save_track+0x4f/0x80 [ 84.655445][ T5327] ? aio_write+0x547/0x870 [ 84.655458][ T5327] aio_write+0x5cd/0x870 [ 84.655471][ T5327] ? __pfx_aio_write+0x10/0x10 [ 84.655493][ T5327] io_submit_one+0x7bb/0x14c0 [ 84.655505][ T5327] ? irqentry_exit+0x59e/0x620 [ 84.655520][ T5327] ? trace_irq_disable+0x3b/0x150 [ 84.655533][ T5327] ? __pfx_io_submit_one+0x10/0x10 [ 84.655549][ T5327] ? __might_fault+0xaf/0x130 [ 84.655567][ T5327] __se_sys_io_submit+0x195/0x340 [ 84.655586][ T5327] ? __pfx___se_sys_io_submit+0x10/0x10 [ 84.655608][ T5327] do_syscall_64+0x14d/0xf80 [ 84.655622][ T5327] ? trace_irq_disable+0x3b/0x150 [ 84.655631][ T5327] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.655641][ T5327] ? clear_bhb_loop+0x40/0x90 [ 84.655650][ T5327] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.655660][ T5327] RIP: 0033:0x7f133c39c819 [ 84.655673][ T5327] 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 [ 84.655682][ T5327] RSP: 002b:00007f133d25dfe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 84.655695][ T5327] RAX: ffffffffffffffda RBX: 00007f133c615fa0 RCX: 00007f133c39c819 [ 84.655704][ T5327] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f133d214000 [ 84.655711][ T5327] RBP: 00007f133c432c91 R08: 0000000000000000 R09: 0000000000000000 [ 84.655716][ T5327] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.655722][ T5327] R13: 00007f133c616038 R14: 00007f133c615fa0 R15: 00007ffe3d1fe8a8 [ 84.655731][ T5327]