program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = creat(&(0x7f0000000100)='./file1\x00', 0x62) io_setup(0x202, &(0x7f0000000200)=0x0) r2 = socket$caif_seqpacket(0x25, 0x5, 0x3) r3 = openat$comedi(0xffffff9c, &(0x7f0000000040)='/dev/comedi3\x00', 0x2000, 0x0) ioctl$COMEDI_DEVCONFIG(r3, 0x40946400, &(0x7f0000000080)={'dt2817\x00', [0x2f00, 0x80008000, 0x1, 0xa, 0x0, 0x0, 0x1, 0xf, 0x1000, 0x1, 0x8, 0x1, 0x1006, 0x4, 0xffff, 0x6, 0xffffffa7, 0x9, 0xfffffffd, 0x1, 0x3ff, 0x10000, 0x800, 0xe2df, 0x9, 0x1, 0x4, 0x3, 0x7, 0x5, 0x5]}) recvmmsg(r2, &(0x7f0000000b80)=[{{&(0x7f0000000140)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}}}, 0x80, &(0x7f0000000f00)=[{&(0x7f0000000cc0)=""/66, 0x42}, {&(0x7f0000001000)=""/220, 0xdc}, {&(0x7f0000000780)=""/7, 0x7}, {&(0x7f00000007c0)=""/91, 0x5b}], 0x4, &(0x7f0000000240)=""/154, 0x9a}, 0x101}, {{&(0x7f0000000300)=@in6, 0x80, &(0x7f00000004c0)=[{&(0x7f0000000380)=""/67, 0x43}, {&(0x7f0000000f40)=""/178, 0xb2}, {&(0x7f0000000580)=""/171, 0xab}, {&(0x7f00000001c0)=""/51, 0x33}, {&(0x7f0000000640)=""/182, 0xb6}], 0x5}}, {{&(0x7f0000000700)=@can, 0x80, &(0x7f0000000900)=[{&(0x7f0000000d40)=""/180, 0xb4}, {&(0x7f0000000840)=""/185, 0xb9}], 0x2}, 0xb8f5}, {{&(0x7f0000000940)=@qipcrtr, 0x80, &(0x7f0000000ac0)=[{&(0x7f0000000e00)=""/201, 0xc9}], 0x1, &(0x7f0000000b00)=""/97, 0x61}, 0x9}], 0x4, 0x10262, &(0x7f0000000c80)={0x77359400}) io_submit(r1, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r0, &(0x7f0000000000), 0x70000}]) [ 73.792037][ T46] Bluetooth: hci0: command tx timeout [ 73.873359][ T5337] loop0: detected capacity change from 0 to 1024 [ 73.954964][ T5337] [ 73.956146][ T5337] ============================================ [ 73.958736][ T5337] WARNING: possible recursive locking detected [ 73.961241][ T5337] syzkaller #0 Not tainted [ 73.963121][ T5337] -------------------------------------------- [ 73.965641][ T5337] syz.0.0/5337 is trying to acquire lock: [ 73.967951][ T5337] ffff888010ef4108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1c30 [ 73.972590][ T5337] [ 73.972590][ T5337] but task is already holding lock: [ 73.975969][ T5337] ffff888010ef6988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1c30 [ 73.980946][ T5337] [ 73.980946][ T5337] other info that might help us debug this: [ 73.984739][ T5337] Possible unsafe locking scenario: [ 73.984739][ T5337] [ 73.988160][ T5337] CPU0 [ 73.989807][ T5337] ---- [ 73.991391][ T5337] lock(&HFSPLUS_I(inode)->extents_lock); [ 73.994041][ T5337] lock(&HFSPLUS_I(inode)->extents_lock); [ 73.996745][ T5337] [ 73.996745][ T5337] *** DEADLOCK *** [ 73.996745][ T5337] [ 74.000287][ T5337] May be due to missing lock nesting notation [ 74.000287][ T5337] [ 74.003925][ T5337] 3 locks held by syz.0.0/5337: [ 74.006080][ T5337] #0: ffff888010ef6b78 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: generic_file_write_iter+0xeb/0x550 [ 74.011207][ T5337] #1: ffff888010ef6988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1f8/0x1c30 [ 74.016552][ T5337] #2: ffff8880369040b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 74.021184][ T5337] [ 74.021184][ T5337] stack backtrace: [ 74.024066][ T5337] CPU: 0 UID: 0 PID: 5337 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 74.024085][ T5337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 74.024093][ T5337] Call Trace: [ 74.024102][ T5337] [ 74.024109][ T5337] dump_stack_lvl+0xe8/0x150 [ 74.024127][ T5337] print_deadlock_bug+0x279/0x290 [ 74.024141][ T5337] __lock_acquire+0x2540/0x2cf0 [ 74.024154][ T5337] ? unwind_next_frame+0xa5/0x23d0 [ 74.024167][ T5337] ? unwind_next_frame+0xa5/0x23d0 [ 74.024179][ T5337] ? __bfs+0x154/0x290 [ 74.024187][ T5337] ? __pfx_hlock_conflict+0x10/0x10 [ 74.024199][ T5337] ? hfsplus_file_extend+0x1f8/0x1c30 [ 74.024210][ T5337] lock_acquire+0x107/0x340 [ 74.024219][ T5337] ? hfsplus_file_extend+0x1f8/0x1c30 [ 74.024231][ T5337] __mutex_lock+0x187/0x1350 [ 74.024290][ T5337] ? hfsplus_file_extend+0x1f8/0x1c30 [ 74.024303][ T5337] ? __bfs+0x154/0x290 [ 74.024313][ T5337] ? __pfx_hlock_conflict+0x10/0x10 [ 74.024326][ T5337] ? hfsplus_file_extend+0x1f8/0x1c30 [ 74.024336][ T5337] ? check_noncircular+0xda/0x150 [ 74.024347][ T5337] ? __pfx___mutex_lock+0x10/0x10 [ 74.024359][ T5337] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 74.024375][ T5337] hfsplus_file_extend+0x1f8/0x1c30 [ 74.024389][ T5337] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 74.024400][ T5337] ? __pfx___mutex_trylock_common+0x10/0x10 [ 74.024413][ T5337] ? rcu_is_watching+0x15/0xb0 [ 74.024423][ T5337] ? trace_contention_end+0x39/0x100 [ 74.024431][ T5337] ? __asan_memset+0x22/0x50 [ 74.024439][ T5337] ? hfsplus_brec_find+0x1a9/0x510 [ 74.024453][ T5337] hfsplus_bmap_reserve+0x125/0x510 [ 74.024467][ T5337] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 74.024480][ T5337] __hfsplus_ext_cache_extent+0x89/0xe30 [ 74.024494][ T5337] hfsplus_file_extend+0x437/0x1c30 [ 74.024507][ T5337] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 74.024519][ T5337] ? clean_bdev_aliases+0x5c9/0x6b0 [ 74.024536][ T5337] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 74.024551][ T5337] hfsplus_get_block+0x40a/0x1600 [ 74.024562][ T5337] ? __pfx_hfsplus_get_block+0x10/0x10 [ 74.024572][ T5337] ? do_raw_spin_unlock+0x4d/0x240 [ 74.024586][ T5337] ? _raw_spin_unlock+0x28/0x50 [ 74.024600][ T5337] __block_write_begin_int+0x6b5/0x1900 [ 74.024617][ T5337] ? __pfx_hfsplus_get_block+0x10/0x10 [ 74.024628][ T5337] ? __pfx___block_write_begin_int+0x10/0x10 [ 74.024642][ T5337] cont_write_begin+0x78c/0xb50 [ 74.024657][ T5337] ? __pfx_cont_write_begin+0x10/0x10 [ 74.024672][ T5337] hfsplus_write_begin+0x66/0xb0 [ 74.024681][ T5337] ? __pfx_hfsplus_get_block+0x10/0x10 [ 74.024691][ T5337] generic_perform_write+0x2c5/0x900 [ 74.024705][ T5337] ? __pfx_generic_perform_write+0x10/0x10 [ 74.024714][ T5337] ? file_update_time_flags+0x448/0x4e0 [ 74.024727][ T5337] ? __generic_file_write_iter+0xf9/0x230 [ 74.024736][ T5337] ? generic_file_write_iter+0x103/0x550 [ 74.024746][ T5337] generic_file_write_iter+0x117/0x550 [ 74.024756][ T5337] ? __pfx_generic_file_write_iter+0x10/0x10 [ 74.024767][ T5337] ? __lock_acquire+0x6b6/0x2cf0 [ 74.024778][ T5337] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 74.024792][ T5337] ? lockdep_hardirqs_on+0x7b/0x110 [ 74.024801][ T5337] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 74.024814][ T5337] ? stack_depot_save_flags+0x3f3/0x810 [ 74.024831][ T5337] ? io_submit_one+0x775/0x1430 [ 74.024844][ T5337] ? aio_write+0x4c4/0x7a0 [ 74.024855][ T5337] aio_write+0x535/0x7a0 [ 74.024867][ T5337] ? __pfx_aio_write+0x10/0x10 [ 74.024881][ T5337] ? __might_fault+0xb0/0x130 [ 74.024898][ T5337] io_submit_one+0x775/0x1430 [ 74.024912][ T5337] ? irqentry_exit+0x5e8/0x670 [ 74.024921][ T5337] ? __pfx_io_submit_one+0x10/0x10 [ 74.024934][ T5337] ? __might_fault+0xb0/0x130 [ 74.024949][ T5337] ? __might_fault+0xb0/0x130 [ 74.024963][ T5337] __se_sys_io_submit+0x185/0x320 [ 74.024973][ T5337] ? __pfx___se_sys_io_submit+0x10/0x10 [ 74.024987][ T5337] do_syscall_64+0xec/0xf80 [ 74.024996][ T5337] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.025006][ T5337] ? trace_irq_disable+0x37/0x100 [ 74.025021][ T5337] ? clear_bhb_loop+0x60/0xb0 [ 74.025040][ T5337] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.025050][ T5337] RIP: 0033:0x7fe9a538f7c9 [ 74.025064][ T5337] 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 [ 74.025074][ T5337] RSP: 002b:00007fe9a6212038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 74.025089][ T5337] RAX: ffffffffffffffda RBX: 00007fe9a55e5fa0 RCX: 00007fe9a538f7c9 [ 74.025098][ T5337] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007fe9a61c8000 [ 74.025104][ T5337] RBP: 00007fe9a5413f91 R08: 0000000000000000 R09: 0000000000000000 [ 74.025110][ T5337] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 74.025115][ T5337] R13: 00007fe9a55e6038 R14: 00007fe9a55e5fa0 R15: 00007fffbfa98798 [ 74.025125][ T5337] [ 74.255415][ T5336] caif:caif_disconnect_client(): nothing to disconnect