program: syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") r0 = openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000100), 0x80, 0x0) ioctl$SNDCTL_TMR_SELECT(r0, 0x40045408) r1 = creat(&(0x7f0000000140)='./file1\x00', 0x68) r2 = bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x19, 0x4, 0x4, 0x1, 0x0, 0x1}, 0x48) bpf$MAP_GET_NEXT_KEY(0x4, &(0x7f0000000940)={r2, &(0x7f0000000900), 0x0}, 0x20) io_setup(0x202, &(0x7f0000000200)=0x0) r4 = syz_open_procfs$namespace(0x0, &(0x7f0000001380)='ns/cgroup\x00') open_by_handle_at(r4, &(0x7f0000000000)=@FILEID_NILFS_WITHOUT_PARENT={0x20, 0xf1, {0xb, 0x0, 0x105, 0xfffffff8, 0x4}}, 0x0) io_submit(r3, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r1, &(0x7f0000000000), 0x70000}]) syz_mount_image$hfsplus(&(0x7f0000000040), &(0x7f0000000080)='./file1\x00', 0x400, &(0x7f0000000140)=ANY=[], 0x1, 0x694, &(0x7f0000001100)="$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") (async) openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000100), 0x80, 0x0) (async) ioctl$SNDCTL_TMR_SELECT(r0, 0x40045408) (async) creat(&(0x7f0000000140)='./file1\x00', 0x68) (async) bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x19, 0x4, 0x4, 0x1, 0x0, 0x1}, 0x48) (async) bpf$MAP_GET_NEXT_KEY(0x4, &(0x7f0000000940)={r2, &(0x7f0000000900), 0x0}, 0x20) (async) io_setup(0x202, &(0x7f0000000200)) (async) syz_open_procfs$namespace(0x0, &(0x7f0000001380)='ns/cgroup\x00') (async) open_by_handle_at(r4, &(0x7f0000000000)=@FILEID_NILFS_WITHOUT_PARENT={0x20, 0xf1, {0xb, 0x0, 0x105, 0xfffffff8, 0x4}}, 0x0) (async) io_submit(r3, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030000, 0x0, 0x1, 0x0, r1, &(0x7f0000000000), 0x70000}]) (async) [ 84.336489][ T45] Bluetooth: hci0: command tx timeout [ 84.451241][ T5321] loop0: detected capacity change from 0 to 1024 [ 84.595042][ T5321] [ 84.596041][ T5321] ============================================ [ 84.598403][ T5321] WARNING: possible recursive locking detected [ 84.600907][ T5321] syzkaller #0 Not tainted [ 84.602738][ T5321] -------------------------------------------- [ 84.605647][ T5321] syz.0.0/5321 is trying to acquire lock: [ 84.608240][ T5321] ffff888044438e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.614336][ T5321] [ 84.614336][ T5321] but task is already holding lock: [ 84.617406][ T5321] ffff8880372462c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.622207][ T5321] [ 84.622207][ T5321] other info that might help us debug this: [ 84.625984][ T5321] Possible unsafe locking scenario: [ 84.625984][ T5321] [ 84.629416][ T5321] CPU0 [ 84.631029][ T5321] ---- [ 84.632621][ T5321] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.635436][ T5321] lock(&HFSPLUS_I(inode)->extents_lock); [ 84.638009][ T5321] [ 84.638009][ T5321] *** DEADLOCK *** [ 84.638009][ T5321] [ 84.641703][ T5321] May be due to missing lock nesting notation [ 84.641703][ T5321] [ 84.645982][ T5321] 3 locks held by syz.0.0/5321: [ 84.649167][ T5321] #0: ffff8880372464b8 (&sb->s_type->i_mutex_key#25){+.+.}-{4:4}, at: generic_file_write_iter+0x11e/0x680 [ 84.654675][ T5321] #1: ffff8880372462c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x215/0x1d70 [ 84.660025][ T5321] #2: ffff888034cd80b0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfsplus_find_init+0x168/0x2d0 [ 84.665167][ T5321] [ 84.665167][ T5321] stack backtrace: [ 84.669122][ T5321] CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 84.669150][ T5321] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 84.669160][ T5321] Call Trace: [ 84.669171][ T5321] [ 84.669180][ T5321] dump_stack_lvl+0xe8/0x150 [ 84.669210][ T5321] print_deadlock_bug+0x279/0x290 [ 84.669234][ T5321] __lock_acquire+0x253f/0x2cf0 [ 84.669257][ T5321] ? unwind_next_frame+0xa5/0x23c0 [ 84.669278][ T5321] ? __bfs+0x153/0x290 [ 84.669296][ T5321] ? __pfx_hlock_conflict+0x10/0x10 [ 84.669319][ T5321] lock_acquire+0xf0/0x2e0 [ 84.669336][ T5321] ? hfsplus_file_extend+0x215/0x1d70 [ 84.669362][ T5321] __mutex_lock+0x19f/0x1300 [ 84.669453][ T5321] ? hfsplus_file_extend+0x215/0x1d70 [ 84.669475][ T5321] ? __bfs+0x153/0x290 [ 84.669493][ T5321] ? hfsplus_file_extend+0x215/0x1d70 [ 84.669515][ T5321] ? __pfx___mutex_lock+0x10/0x10 [ 84.669530][ T5321] ? lockdep_unlock+0x5d/0xd0 [ 84.669545][ T5321] ? __lock_acquire+0x146e/0x2cf0 [ 84.669563][ T5321] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 84.669585][ T5321] hfsplus_file_extend+0x215/0x1d70 [ 84.669611][ T5321] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.669631][ T5321] ? __pfx___mutex_trylock_common+0x10/0x10 [ 84.669655][ T5321] ? rcu_is_watching+0x15/0xb0 [ 84.669675][ T5321] ? trace_contention_end+0x3d/0x150 [ 84.669699][ T5321] ? __asan_memset+0x22/0x50 [ 84.669721][ T5321] ? hfsplus_brec_find+0x19d/0x520 [ 84.669740][ T5321] hfsplus_bmap_reserve+0x125/0x510 [ 84.669769][ T5321] __hfsplus_ext_write_extent+0x28d/0x5b0 [ 84.669792][ T5321] __hfsplus_ext_cache_extent+0x89/0xe30 [ 84.669816][ T5321] hfsplus_file_extend+0x4af/0x1d70 [ 84.669839][ T5321] ? __pfx_hfsplus_file_extend+0x10/0x10 [ 84.669861][ T5321] ? clean_bdev_aliases+0x62e/0x750 [ 84.669878][ T5321] ? __pfx_clean_bdev_aliases+0x10/0x10 [ 84.669894][ T5321] hfsplus_get_block+0x42c/0x1670 [ 84.669916][ T5321] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.669938][ T5321] ? do_raw_spin_unlock+0x4d/0x210 [ 84.669952][ T5321] ? _raw_spin_unlock+0x28/0x50 [ 84.669974][ T5321] __block_write_begin_int+0x6c6/0x1910 [ 84.669994][ T5321] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.670015][ T5321] ? __pfx___block_write_begin_int+0x10/0x10 [ 84.670031][ T5321] cont_write_begin+0x737/0xae0 [ 84.670047][ T5321] ? irqentry_exit+0x59e/0x620 [ 84.670071][ T5321] ? __pfx_cont_write_begin+0x10/0x10 [ 84.670089][ T5321] hfsplus_write_begin+0x66/0xb0 [ 84.670108][ T5321] ? __pfx_hfsplus_get_block+0x10/0x10 [ 84.670129][ T5321] generic_perform_write+0x2e2/0x8f0 [ 84.670149][ T5321] ? __pfx_generic_perform_write+0x10/0x10 [ 84.670165][ T5321] ? file_update_time_flags+0x219/0x4a0 [ 84.670187][ T5321] ? __generic_file_write_iter+0xf9/0x230 [ 84.670202][ T5321] ? generic_file_write_iter+0x136/0x680 [ 84.670218][ T5321] generic_file_write_iter+0x14a/0x680 [ 84.670234][ T5321] ? __pfx_generic_file_write_iter+0x10/0x10 [ 84.670249][ T5321] ? do_raw_spin_lock+0x12b/0x2f0 [ 84.670265][ T5321] ? __lock_acquire+0x6b5/0x2cf0 [ 84.670284][ T5321] ? lockdep_hardirqs_on+0x7a/0x110 [ 84.670308][ T5321] ? kasan_save_track+0x4f/0x80 [ 84.670333][ T5321] ? aio_write+0x547/0x870 [ 84.670345][ T5321] aio_write+0x5cd/0x870 [ 84.670358][ T5321] ? __pfx_aio_write+0x10/0x10 [ 84.670382][ T5321] io_submit_one+0x7bb/0x14c0 [ 84.670407][ T5321] ? irqentry_exit+0x59e/0x620 [ 84.670428][ T5321] ? trace_irq_disable+0x3b/0x150 [ 84.670453][ T5321] ? __pfx_io_submit_one+0x10/0x10 [ 84.670479][ T5321] ? __might_fault+0xaf/0x130 [ 84.670501][ T5321] __se_sys_io_submit+0x195/0x340 [ 84.670524][ T5321] ? __pfx___se_sys_io_submit+0x10/0x10 [ 84.670550][ T5321] do_syscall_64+0x14d/0xf80 [ 84.670572][ T5321] ? trace_irq_disable+0x3b/0x150 [ 84.670592][ T5321] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.670609][ T5321] ? clear_bhb_loop+0x40/0x90 [ 84.670625][ T5321] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.670642][ T5321] RIP: 0033:0x7fcac559c799 [ 84.670657][ T5321] 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 [ 84.670666][ T5321] RSP: 002b:00007fcac640ffe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 84.670681][ T5321] RAX: ffffffffffffffda RBX: 00007fcac5815fa0 RCX: 00007fcac559c799 [ 84.670688][ T5321] RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007fcac63c6000 [ 84.670695][ T5321] RBP: 00007fcac5632bd9 R08: 0000000000000000 R09: 0000000000000000 [ 84.670702][ T5321] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.670708][ T5321] R13: 00007fcac5816038 R14: 00007fcac5815fa0 R15: 00007ffdc36d71e8 [ 84.670737][ T5321]