Extracting prog: 4m51.477819735s Minimizing prog: 80.693µs Simplifying prog options: 0s Extracting C: 54.303648042s Simplifying C: 10m0.886719236s 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:6 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(&(0x7f0000000000), &(0x7f0000000100)='./file1\x00', 0xa08800, &(0x7f0000000140)=ANY=[], 0x1, 0x671, &(0x7f0000000a40)="$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") program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus detailed listing: executing program 0: syz_mount_image$hfsplus(&(0x7f0000000000), &(0x7f0000000100)='./file1\x00', 0xa08800, &(0x7f0000000140)=ANY=[], 0x1, 0x671, &(0x7f0000000a40)="$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") program crashed: possible deadlock in hfsplus_get_block single: successfully extracted reproducer found reproducer with 1 syscalls minimizing guilty program extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$hfsplus program crashed: possible deadlock in hfsplus_get_block simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=6m0s, {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$hfsplus program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=6m0s, {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$hfsplus program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=6m0s, {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:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus program crashed: possible deadlock in hfsplus_get_block testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus program crashed: possible deadlock in hfsplus_get_block reproducing took 15m46.66829681s repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 1024 ============================================ WARNING: possible recursive locking detected 6.15.0-rc2-syzkaller #0 Not tainted -------------------------------------------- syz-executor908/5831 is trying to acquire lock: ffff888034588e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x272/0x9d0 fs/hfsplus/extents.c:260 but task is already holding lock: ffff888034588108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1ca/0x10f0 fs/hfsplus/extents.c:458 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 5 locks held by syz-executor908/5831: #0: ffff888032ad80e0 (&type->s_umount_key#41/1){+.+.}-{4:4}, at: alloc_super+0x235/0xbd0 fs/super.c:344 #1: ffff88803110f998 (&sbi->vh_mutex){+.+.}-{4:4}, at: hfsplus_fill_super+0x1683/0x1bf0 fs/hfsplus/super.c:554 #2: ffff88807e1860b0 (&tree->tree_lock){+.+.}-{4:4}, at: hfsplus_find_init+0x17b/0x1f0 fs/hfsplus/bfind.c:28 #3: ffff888034588108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1ca/0x10f0 fs/hfsplus/extents.c:458 #4: ffff88803110f8f8 (&sbi->alloc_mutex){+.+.}-{4:4}, at: hfsplus_block_allocate+0xe9/0x990 fs/hfsplus/bitmap.c:35 stack backtrace: CPU: 1 UID: 0 PID: 5831 Comm: syz-executor908 Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_deadlock_bug+0x1e9/0x240 kernel/locking/lockdep.c:3042 check_deadlock kernel/locking/lockdep.c:3094 [inline] validate_chain kernel/locking/lockdep.c:3896 [inline] __lock_acquire+0xff7/0x1ba0 kernel/locking/lockdep.c:5235 lock_acquire kernel/locking/lockdep.c:5866 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 hfsplus_get_block+0x272/0x9d0 fs/hfsplus/extents.c:260 block_read_full_folio+0x457/0x850 fs/buffer.c:2392 filemap_read_folio+0xc8/0x2a0 mm/filemap.c:2400 do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3884 do_read_cache_page mm/filemap.c:3950 [inline] read_cache_page+0x5b/0x160 mm/filemap.c:3959 read_mapping_page include/linux/pagemap.h:989 [inline] hfsplus_block_allocate+0x148/0x990 fs/hfsplus/bitmap.c:37 hfsplus_file_extend+0x459/0x10f0 fs/hfsplus/extents.c:469 hfsplus_bmap_reserve+0x31f/0x420 fs/hfsplus/btree.c:358 hfsplus_create_cat+0x20d/0x10d0 fs/hfsplus/catalog.c:272 hfsplus_fill_super+0x16fa/0x1bf0 fs/hfsplus/super.c:561 get_tree_bdev_flags+0x38c/0x620 fs/super.c:1636 vfs_get_tree+0x8e/0x340 fs/super.c:1759 do_new_mount fs/namespace.c:3879 [inline] path_mount+0x14d4/0x1f30 fs/namespace.c:4206 do_mount fs/namespace.c:4219 [inline] __do_sys_mount fs/namespace.c:4430 [inline] __se_sys_mount fs/namespace.c:4407 [inline] __x64_sys_mount+0x28d/0x310 fs/namespace.c:4407 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2ba0979e2a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffe53a4828 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fffe53a4840 RCX: 00007f2ba0979e2a RDX: 0000200000000000 RSI: 0000200000000100 RDI: 00007fffe53a4840 RBP: 0000200000000100 R08: 00007fffe53a4880 R09: 000000000000066c R10: 0000000000a08800 R11: 0000000000000286 R12: 0000200000000000 R13: 00007fffe53a4880 R14: 0000000000000003 R15: 0000000000a08800 final repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 1024 ============================================ WARNING: possible recursive locking detected 6.15.0-rc2-syzkaller #0 Not tainted -------------------------------------------- syz-executor908/5831 is trying to acquire lock: ffff888034588e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x272/0x9d0 fs/hfsplus/extents.c:260 but task is already holding lock: ffff888034588108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1ca/0x10f0 fs/hfsplus/extents.c:458 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 5 locks held by syz-executor908/5831: #0: ffff888032ad80e0 (&type->s_umount_key#41/1){+.+.}-{4:4}, at: alloc_super+0x235/0xbd0 fs/super.c:344 #1: ffff88803110f998 (&sbi->vh_mutex){+.+.}-{4:4}, at: hfsplus_fill_super+0x1683/0x1bf0 fs/hfsplus/super.c:554 #2: ffff88807e1860b0 (&tree->tree_lock){+.+.}-{4:4}, at: hfsplus_find_init+0x17b/0x1f0 fs/hfsplus/bfind.c:28 #3: ffff888034588108 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_extend+0x1ca/0x10f0 fs/hfsplus/extents.c:458 #4: ffff88803110f8f8 (&sbi->alloc_mutex){+.+.}-{4:4}, at: hfsplus_block_allocate+0xe9/0x990 fs/hfsplus/bitmap.c:35 stack backtrace: CPU: 1 UID: 0 PID: 5831 Comm: syz-executor908 Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_deadlock_bug+0x1e9/0x240 kernel/locking/lockdep.c:3042 check_deadlock kernel/locking/lockdep.c:3094 [inline] validate_chain kernel/locking/lockdep.c:3896 [inline] __lock_acquire+0xff7/0x1ba0 kernel/locking/lockdep.c:5235 lock_acquire kernel/locking/lockdep.c:5866 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823 __mutex_lock_common kernel/locking/mutex.c:601 [inline] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746 hfsplus_get_block+0x272/0x9d0 fs/hfsplus/extents.c:260 block_read_full_folio+0x457/0x850 fs/buffer.c:2392 filemap_read_folio+0xc8/0x2a0 mm/filemap.c:2400 do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3884 do_read_cache_page mm/filemap.c:3950 [inline] read_cache_page+0x5b/0x160 mm/filemap.c:3959 read_mapping_page include/linux/pagemap.h:989 [inline] hfsplus_block_allocate+0x148/0x990 fs/hfsplus/bitmap.c:37 hfsplus_file_extend+0x459/0x10f0 fs/hfsplus/extents.c:469 hfsplus_bmap_reserve+0x31f/0x420 fs/hfsplus/btree.c:358 hfsplus_create_cat+0x20d/0x10d0 fs/hfsplus/catalog.c:272 hfsplus_fill_super+0x16fa/0x1bf0 fs/hfsplus/super.c:561 get_tree_bdev_flags+0x38c/0x620 fs/super.c:1636 vfs_get_tree+0x8e/0x340 fs/super.c:1759 do_new_mount fs/namespace.c:3879 [inline] path_mount+0x14d4/0x1f30 fs/namespace.c:4206 do_mount fs/namespace.c:4219 [inline] __do_sys_mount fs/namespace.c:4430 [inline] __se_sys_mount fs/namespace.c:4407 [inline] __x64_sys_mount+0x28d/0x310 fs/namespace.c:4407 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2ba0979e2a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffe53a4828 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fffe53a4840 RCX: 00007f2ba0979e2a RDX: 0000200000000000 RSI: 0000200000000100 RDI: 00007fffe53a4840 RBP: 0000200000000100 R08: 00007fffe53a4880 R09: 000000000000066c R10: 0000000000a08800 R11: 0000000000000286 R12: 0000200000000000 R13: 00007fffe53a4880 R14: 0000000000000003 R15: 0000000000a08800