Extracting prog: 2m38.896932822s Minimizing prog: 3m32.770499641s Simplifying prog options: 0s Extracting C: 1m8.947446916s Simplifying C: 8m40.744778327s 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)="$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") syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0) program crashed: possible deadlock in hfsplus_get_block single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=1m1.749672262s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus detailed listing: executing program 0: syz_mount_image$hfsplus(&(0x7f0000000140), &(0x7f0000000400)='./file0\x00', 0x3000c04, &(0x7f00000004c0)=ANY=[@ANYRES64=0x0, @ANYRES16=0x0, @ANYRESHEX, @ANYRES16=0x0, @ANYRES16, @ANYRES8, @ANYRES32, @ANYRES8], 0x1, 0x65f, &(0x7f0000002280)="$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") program did not crash testing program (duration=1m1.749672262s, {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=1m1.749672262s, {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$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block simplifying C reproducer testing compiled C program (duration=1m1.749672262s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m1.749672262s, {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$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m1.749672262s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m1.749672262s, {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$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m1.749672262s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program did not crash testing compiled C program (duration=1m1.749672262s, {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$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=1m1.749672262s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_clone program crashed: possible deadlock in hfsplus_get_block reproducing took 16m1.359698176s repro crashed as (corrupted=false): ============================================ WARNING: possible recursive locking detected 5.15.180-syzkaller #0 Not tainted -------------------------------------------- syz-executor261/4021 is trying to acquire lock: ffff0000cc969548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x2c4/0x1194 fs/hfsplus/extents.c:260 but task is already holding lock: ffff0000dd2d1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x250/0xa2c 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-executor261/4021: #0: ffff0000dd262460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff0000dd2d1080 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #1: ffff0000dd2d1080 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: do_unlinkat+0x2d0/0x830 fs/namei.c:4331 #2: ffff0000dd2d1740 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #2: ffff0000dd2d1740 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: vfs_unlink+0xd8/0x508 fs/namei.c:4269 #3: ffff0000ca3c5198 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_unlink+0x144/0x6a0 fs/hfsplus/dir.c:370 #4: ffff0000dd2d1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x250/0xa2c fs/hfsplus/extents.c:577 #5: ffff0000ca3c50f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xcc/0x514 fs/hfsplus/bitmap.c:182 stack backtrace: CPU: 1 PID: 4021 Comm: syz-executor261 Not tainted 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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 validate_chain kernel/locking/lockdep.c:-1 [inline] __lock_acquire+0x62bc/0x7638 kernel/locking/lockdep.c:5012 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 hfsplus_get_block+0x2c4/0x1194 fs/hfsplus/extents.c:260 block_read_full_page+0x2a0/0xc4c fs/buffer.c:2290 hfsplus_readpage+0x28/0x38 fs/hfsplus/inode.c:28 do_read_cache_page+0x60c/0x950 mm/filemap.c:-1 read_cache_page+0x68/0x84 mm/filemap.c:3574 read_mapping_page include/linux/pagemap.h:515 [inline] hfsplus_block_free+0x120/0x514 fs/hfsplus/bitmap.c:185 hfsplus_free_extents+0x148/0x8d4 fs/hfsplus/extents.c:363 hfsplus_file_truncate+0x678/0xa2c fs/hfsplus/extents.c:592 hfsplus_delete_inode+0x154/0x200 fs/hfsplus/inode.c:-1 hfsplus_unlink+0x414/0x6a0 fs/hfsplus/dir.c:405 vfs_unlink+0x2f0/0x508 fs/namei.c:4280 do_unlinkat+0x4cc/0x830 fs/namei.c:4348 __do_sys_unlinkat fs/namei.c:4391 [inline] __se_sys_unlinkat fs/namei.c:4384 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4384 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 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 5.15.180-syzkaller #0 Not tainted -------------------------------------------- syz-executor261/4021 is trying to acquire lock: ffff0000cc969548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x2c4/0x1194 fs/hfsplus/extents.c:260 but task is already holding lock: ffff0000dd2d1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x250/0xa2c 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-executor261/4021: #0: ffff0000dd262460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff0000dd2d1080 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #1: ffff0000dd2d1080 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: do_unlinkat+0x2d0/0x830 fs/namei.c:4331 #2: ffff0000dd2d1740 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #2: ffff0000dd2d1740 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: vfs_unlink+0xd8/0x508 fs/namei.c:4269 #3: ffff0000ca3c5198 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_unlink+0x144/0x6a0 fs/hfsplus/dir.c:370 #4: ffff0000dd2d1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x250/0xa2c fs/hfsplus/extents.c:577 #5: ffff0000ca3c50f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xcc/0x514 fs/hfsplus/bitmap.c:182 stack backtrace: CPU: 1 PID: 4021 Comm: syz-executor261 Not tainted 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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 validate_chain kernel/locking/lockdep.c:-1 [inline] __lock_acquire+0x62bc/0x7638 kernel/locking/lockdep.c:5012 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 hfsplus_get_block+0x2c4/0x1194 fs/hfsplus/extents.c:260 block_read_full_page+0x2a0/0xc4c fs/buffer.c:2290 hfsplus_readpage+0x28/0x38 fs/hfsplus/inode.c:28 do_read_cache_page+0x60c/0x950 mm/filemap.c:-1 read_cache_page+0x68/0x84 mm/filemap.c:3574 read_mapping_page include/linux/pagemap.h:515 [inline] hfsplus_block_free+0x120/0x514 fs/hfsplus/bitmap.c:185 hfsplus_free_extents+0x148/0x8d4 fs/hfsplus/extents.c:363 hfsplus_file_truncate+0x678/0xa2c fs/hfsplus/extents.c:592 hfsplus_delete_inode+0x154/0x200 fs/hfsplus/inode.c:-1 hfsplus_unlink+0x414/0x6a0 fs/hfsplus/dir.c:405 vfs_unlink+0x2f0/0x508 fs/namei.c:4280 do_unlinkat+0x4cc/0x830 fs/namei.c:4348 __do_sys_unlinkat fs/namei.c:4391 [inline] __se_sys_unlinkat fs/namei.c:4384 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4384 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 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