Extracting prog: 2m44.790382402s Minimizing prog: 2m51.298785915s Simplifying prog options: 0s Extracting C: 43.331553244s Simplifying C: 8m42.170989707s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone detailed listing: executing program 0: syz_mount_image$hfsplus(&(0x7f0000000140), &(0x7f0000000400)='./file0\x00', 0x3000c04, &(0x7f00000004c0)=ANY=[@ANYRES64=0x0, @ANYRES16=0x0, @ANYRESHEX, @ANYRES16=0x0, @ANYRES16, @ANYRES8, @ANYRES32, @ANYRES8], 0x1, 0x65f, &(0x7f0000002280)="$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") syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0) program crashed: possible deadlock in hfsplus_get_block single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=1m2.384982732s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus detailed listing: executing program 0: syz_mount_image$hfsplus(&(0x7f0000000140), &(0x7f0000000400)='./file0\x00', 0x3000c04, &(0x7f00000004c0)=ANY=[@ANYRES64=0x0, @ANYRES16=0x0, @ANYRESHEX, @ANYRES16=0x0, @ANYRES16, @ANYRES8, @ANYRES32, @ANYRES8], 0x1, 0x65f, &(0x7f0000002280)="$eJzs3U9sHFcdB/DvrNd2NpTUTZM2RZUSNRIgIhI7VgquhAgIoRwqVJUDZytxGiubtDguSitEw/9rD+GIVA6+cULiHqlcuMCNIz4iIbhwwVxYNLOz9sbe9Z/K9trl84lm35t5M+/93m9md3bXijbA/60bl9J8kiI3Lr3+sFxfXZltr67M3uvVk0wmaSTNqihS/LvT6XycXE93yUtJirq7Ytg4jxfn3vzLv1b/1u1rXVGvDz1udx7VSy4kGavL/erv5k79ndipu2J9hmXCLvYSB6M2nqRT+cfj7pbv//GZ9ZY+rUFH73jlA8dA0b1vbjGVnKyf6OX7gO5d8el7+LH0aNQBAAAAwCF4di1reZhTo44DAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAjpP69/+Lemn06hdS9H7/f6Lelrp+tJzf2+5PDioOAAAAAAAAADhE59eq4lRvvVNUf/N/pVo5Uz1+Ju/mQRaylMt5mPksZzlLmUky1dfRxMP55eWlmf4jJwcfeXXgkVd3CHSyLlv7Mm0AAAAAAAAA+LT5SW5s/P0fAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACOgiIZ6xbVcqZXn0qjmeREkolyv0fJn3v14+zJqAMAAACAQ/DsWtbyMKd6652i+sz/QvW5/0Tezf0sZzHLaWcht6rvArqf+hurK7Pt1ZXZe+Wytd9v/HNPYVQ9pvvdw+CRz1V7tHI7i9WWy7mZt9POrTSqI0vnevEMjuvHZUzF12u7jOxWXZYz/7Aut/hgT5MdZo9fpkxVGRlfz8h0HVuZjee2z8Qez87mkWbSWA/2zKaRNk3iE+X8ZF2W8/nFsJyPxOZMXO27+l7YPufJF37/2+/dad+/e+f2g0tHZ0q7M1aXneqxtTUTs32ZePHTnIktpqtMnF1fv5Fv57u5lAt5I0tZzA8yn+Us5EK+VdXm6+u5fJysjxmSqetPrb2xUyQT9RXaPVl7i+mV6thTWcx38nZuZSGvVv+uZiZfybVcy1zfGT67i1faxpBnfeezA4O/+MW60kryy7o8Gsq8PteX1/7X3KmqrX/LRpZO7//9qPm5ulKO8dO6PBo2Z2KmLxPPb5+J31QvKw/a9+8u3Zl/Z3fDnf6wrpTPo58fqbtEeb2cLk9Wtfb01VG2PT+wbaZqO7Pe1tjSdrbX9tdf/+q1ap9hz9SJ+j1c82tzW+5YZduLA0eZrdrO9bUNer8FwJF38ksnJ1p/b/2p9VHrZ607rddPfHPyq5MvT2T8D+OvNafHPt94ufhdPsqPNj7/AwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAn9yD996/O99uLyxtqnQ6nQ+GNB1I5b+HM1bv58yG7jO+74O+9ExyQNMZ22mfiSSHdQa3r/yn0+nUW4qjEM/2lU5pMp0DH6uZZFDT+dEnYcQvTMCBu7J8750rD957/8uL9+bfWnhr4f7ctWtz03PXXp29cnuxvTDdfRx1lMBB2LjpjzoSAAAAAAAAAAAAYLcO478TDB/9xGFOFQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADimblxK80mKzExfni7XV1dm2+XSq2/s2UzSSFL8MCk+Tq6nu2Sqr7ti2DiPF+feHH+qr2Zv/8Z2x+3Oo3rJhSRjdblf/d3csb+JHbor1mdYJuxiL3Ewav8LAAD//wVhAus=") program did not crash testing program (duration=1m2.384982732s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_clone detailed listing: executing program 0: syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=1m2.384982732s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block simplifying C reproducer testing compiled C program (duration=1m2.384982732s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m2.384982732s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m2.384982732s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m2.384982732s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m2.384982732s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program did not crash testing compiled C program (duration=1m2.384982732s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m2.384982732s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block reproducing took 15m1.591739249s repro crashed as (corrupted=false): ============================================ WARNING: possible recursive locking detected 6.1.130-syzkaller #0 Not tainted -------------------------------------------- syz-executor308/4291 is trying to acquire lock: ffff0000d9e39548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x2c4/0x1168 fs/hfsplus/extents.c:260 but task is already holding lock: ffff0000d9fc0e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x24c/0xa18 fs/hfsplus/extents.c:577 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&HFSPLUS_I(inode)->extents_lock); lock(&HFSPLUS_I(inode)->extents_lock); *** DEADLOCK *** May be due to missing lock nesting notation 6 locks held by syz-executor308/4291: #0: ffff0000da3c4460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393 #1: ffff0000d9fc09c0 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #1: ffff0000d9fc09c0 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: do_unlinkat+0x2d0/0x70c fs/namei.c:4373 #2: ffff0000d9fc1080 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff0000d9fc1080 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: vfs_unlink+0xd8/0x508 fs/namei.c:4311 #3: ffff0000c3416198 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_unlink+0x144/0x6a0 fs/hfsplus/dir.c:370 #4: ffff0000d9fc0e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x24c/0xa18 fs/hfsplus/extents.c:577 #5: ffff0000c34160f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xcc/0x4b0 fs/hfsplus/bitmap.c:182 stack backtrace: CPU: 0 PID: 4291 Comm: syz-executor308 Not tainted 6.1.130-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 __lock_acquire+0x6310/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 hfsplus_get_block+0x2c4/0x1168 fs/hfsplus/extents.c:260 block_read_full_folio+0x2f4/0x98c fs/buffer.c:2271 hfsplus_read_folio+0x28/0x38 fs/hfsplus/inode.c:28 filemap_read_folio+0x14c/0x39c mm/filemap.c:2489 do_read_cache_folio+0x24c/0x544 mm/filemap.c:3626 do_read_cache_page mm/filemap.c:3668 [inline] read_cache_page+0x6c/0x180 mm/filemap.c:3677 read_mapping_page include/linux/pagemap.h:791 [inline] hfsplus_block_free+0x11c/0x4b0 fs/hfsplus/bitmap.c:185 hfsplus_free_extents+0x148/0x8d4 fs/hfsplus/extents.c:363 hfsplus_file_truncate+0x674/0xa18 fs/hfsplus/extents.c:592 hfsplus_delete_inode+0x154/0x200 hfsplus_unlink+0x414/0x6a0 fs/hfsplus/dir.c:405 vfs_unlink+0x2f0/0x508 fs/namei.c:4322 do_unlinkat+0x4cc/0x70c fs/namei.c:4390 __do_sys_unlinkat fs/namei.c:4433 [inline] __se_sys_unlinkat fs/namei.c:4426 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4426 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 hfsplus: unable to mark blocks free: error -5 hfsplus: can't free extent hfsplus: unable to mark blocks free: error -5 hfsplus: can't free extent hfsplus: unable to mark blocks free: error -5 hfsplus: can't free extent final repro crashed as (corrupted=false): ============================================ WARNING: possible recursive locking detected 6.1.130-syzkaller #0 Not tainted -------------------------------------------- syz-executor308/4291 is trying to acquire lock: ffff0000d9e39548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x2c4/0x1168 fs/hfsplus/extents.c:260 but task is already holding lock: ffff0000d9fc0e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x24c/0xa18 fs/hfsplus/extents.c:577 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&HFSPLUS_I(inode)->extents_lock); lock(&HFSPLUS_I(inode)->extents_lock); *** DEADLOCK *** May be due to missing lock nesting notation 6 locks held by syz-executor308/4291: #0: ffff0000da3c4460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393 #1: ffff0000d9fc09c0 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #1: ffff0000d9fc09c0 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: do_unlinkat+0x2d0/0x70c fs/namei.c:4373 #2: ffff0000d9fc1080 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff0000d9fc1080 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: vfs_unlink+0xd8/0x508 fs/namei.c:4311 #3: ffff0000c3416198 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_unlink+0x144/0x6a0 fs/hfsplus/dir.c:370 #4: ffff0000d9fc0e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x24c/0xa18 fs/hfsplus/extents.c:577 #5: ffff0000c34160f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xcc/0x4b0 fs/hfsplus/bitmap.c:182 stack backtrace: CPU: 0 PID: 4291 Comm: syz-executor308 Not tainted 6.1.130-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 __lock_acquire+0x6310/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 hfsplus_get_block+0x2c4/0x1168 fs/hfsplus/extents.c:260 block_read_full_folio+0x2f4/0x98c fs/buffer.c:2271 hfsplus_read_folio+0x28/0x38 fs/hfsplus/inode.c:28 filemap_read_folio+0x14c/0x39c mm/filemap.c:2489 do_read_cache_folio+0x24c/0x544 mm/filemap.c:3626 do_read_cache_page mm/filemap.c:3668 [inline] read_cache_page+0x6c/0x180 mm/filemap.c:3677 read_mapping_page include/linux/pagemap.h:791 [inline] hfsplus_block_free+0x11c/0x4b0 fs/hfsplus/bitmap.c:185 hfsplus_free_extents+0x148/0x8d4 fs/hfsplus/extents.c:363 hfsplus_file_truncate+0x674/0xa18 fs/hfsplus/extents.c:592 hfsplus_delete_inode+0x154/0x200 hfsplus_unlink+0x414/0x6a0 fs/hfsplus/dir.c:405 vfs_unlink+0x2f0/0x508 fs/namei.c:4322 do_unlinkat+0x4cc/0x70c fs/namei.c:4390 __do_sys_unlinkat fs/namei.c:4433 [inline] __se_sys_unlinkat fs/namei.c:4426 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4426 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 hfsplus: unable to mark blocks free: error -5 hfsplus: can't free extent hfsplus: unable to mark blocks free: error -5 hfsplus: can't free extent hfsplus: unable to mark blocks free: error -5 hfsplus: can't free extent