Extracting prog: 4m16.050972701s
Minimizing prog: 25m23.727062276s
Simplifying prog options: 0s
Extracting C: 1m31.307653332s
Simplifying C: 10m17.54269104s
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f00000007c0), &(0x7f0000000740)='./file1\x00', 0x3000cc0, &(0x7f0000000800)=ANY=[@ANYBLOB="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"], 0x11, 0x308, &(0x7f0000000400)="$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")
r0 = openat(0xffffffffffffff9c, &(0x7f0000000440)='./file1\x00', 0x103a42, 0x32)
ftruncate(r0, 0x6000000)
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f00000007c0), &(0x7f0000000740)='./file1\x00', 0x3000cc0, &(0x7f0000000800)=ANY=[@ANYBLOB="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"], 0x11, 0x308, &(0x7f0000000400)="$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")
r0 = openat(0xffffffffffffff9c, &(0x7f0000000440)='./file1\x00', 0x103a42, 0x32)
ftruncate(r0, 0x6000000)
program crashed: possible deadlock in hfs_find_init
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=6m0s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f00000007c0), &(0x7f0000000740)='./file1\x00', 0x3000cc0, &(0x7f0000000800)=ANY=[@ANYBLOB="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"], 0x11, 0x308, &(0x7f0000000400)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000440)='./file1\x00', 0x103a42, 0x32)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-ftruncate
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f00000007c0), &(0x7f0000000740)='./file1\x00', 0x3000cc0, &(0x7f0000000800)=ANY=[@ANYBLOB="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"], 0x11, 0x308, &(0x7f0000000400)="$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")
ftruncate(0xffffffffffffffff, 0x6000000)
program did not crash
testing program (duration=6m0s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-ftruncate
detailed listing:
executing program 0:
r0 = openat(0xffffffffffffff9c, &(0x7f0000000440)='./file1\x00', 0x103a42, 0x32)
ftruncate(r0, 0x6000000)
program did not crash
testing program (duration=6m0s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f00000007c0), &(0x7f0000000740)='./file1\x00', 0x3000cc0, &(0x7f0000000800)=ANY=[@ANYBLOB="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"], 0x11, 0x308, &(0x7f0000000400)="$eJzs3U1rE0EcBvBndtNma0tdbUXwIFIN2ItovYiXSMmH8CRqk0JxqagtviBYxZOIvXv36NXPIF4UwXM9eRLP9SAj85Ls+ybV7m6qzw8aNjs7s//J7OzMBJoFEf23ljs7by5+U38CcOECLy4DDgAPaAA4huPe5vrG2kbQ6xYV5OJk0+QSMDlF6piV9V5WVg82h+Wrdw3MRPdROaSUV77WHQTVTvd+6cZ3ntJ3gqbtnTrRqym+PE/3nuXHFICtMoIZK8UtJXaxiweYrSwcIiIaS8KM744d52fs/N1xgJYdTPRsfNzG/z+1W3cApZOFqZHxX7erFKrdD+ukcL2nl3Aq3emvErPKept4P5F4PwlzZcVml2LYqlLH4kytrgW9cyu3g66DZ2hbkcPm9WvXXLp9sWibqaIXMtamBQalTeUeIrJnlNO6DhOqDksm/vsAYvHPFZ6xBOKD+CSuCR+v0R3M/xpSqGbSLeUnWsrEfz6/RF1LXx0Fe9tot9tO7JAj+iQn7BmsIbX04OadcdKWGfuCwB8Wp851NJHL1O7CkFxzmbmW9PYinJxc87Fcqjara8H7/FNVQrwSV8UCvuMdOpH5v6Pia6GwZ4a9RrTMUKA/cdU74y0b0WjZO5EeOTa/7Dw2+9PdZfAppjus9bP4nkZ78BI3cQmz9x4+uuUGQe+u2rgRqMtVbwz23JmxG0Fv4jkQTRqXDWyFe5qQWurg/qBUZWCL+1qgun9kJKmOFe5RvWxYgU/+Nh51Hyj1o5seoRZ1bnQ+7s+F1J82xJJ+SSkrrM627RjJpPpuTVSdsNFHOz5jqkMHm2pSYdZ/4XqlYSZ76sXPnKeP+EWALVGqOfZgBRfmlWZGDuBQwQouq9jcFVx6zZVaM+o11+mzwJnRz+jbOP8RooPPuM7v/4mIiIiIiIiIiIiIiIiIiIiIiIiIDpoq/l+i7joSERERERERERERERERERERERERERERER10yx7M716j//xfjPb83+SjWFzzk+D78vzf7XXw+b9E5fsdAAD//4BCdqE=")
r0 = openat(0xffffffffffffff9c, 0x0, 0x103a42, 0x32)
ftruncate(r0, 0x6000000)
program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
program crashed: possible deadlock in hfs_find_init
simplifying C reproducer
testing compiled C program (duration=6m0s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
program crashed: possible deadlock in hfs_find_init
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
program crashed: possible deadlock in hfs_find_init
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
program crashed: possible deadlock in hfs_find_init
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
program crashed: possible deadlock in hfs_find_init
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
program crashed: possible deadlock in hfs_find_init
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
program crashed: possible deadlock in hfs_find_init
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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
program crashed: possible deadlock in hfs_find_init
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f00000007c0), &(0x7f0000000740)='./file1\x00', 0x3000cc0, &(0x7f0000000800)=ANY=[@ANYBLOB="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"], 0x11, 0x308, &(0x7f0000000400)="$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")
r0 = openat(0xffffffffffffff9c, &(0x7f0000000440)='./file1\x00', 0x103a42, 0x32)
ftruncate(r0, 0x6000000)
program crashed: possible deadlock in hfs_find_init
validation run: crashed=true
testing 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f00000007c0), &(0x7f0000000740)='./file1\x00', 0x3000cc0, &(0x7f0000000800)=ANY=[@ANYBLOB="66696c655f756d61736b3d30303030303030303030303030303030303030373737372c6469725f756d61736b3d30303030303030303030303030303030303030303030302c696f636861727365743d69736f383835392d362c636f6465706167653d63703835352c63726561746f723d4ddd71752c00eeabc72a9832436950c6116498dda8be60a94746ea68766f63d1d63944fbda2a9337439b37b6f2a694ba98f40070d09c3890bd28a2018f1adfe1e0a630020a9cac1a43800a70a9328ddb2a2f2e207da7cd3caf243b39eaff4966b7aa97cb6cc7d2cfc59e7a976de0a00d23c7ffaaa056cc4f8bc7b4c0f9a21db642b3e832e30a90ba1b9e7933b77c60f6a1b9ca9128f0a2d0e23373c9d15c79865bae97ddd82b98001b6aa9c5390e4deaf5f0ee492c6842b1c08486e479a889491459a257e9d4083634dac6cd58520f72e6c2f11bbd5b03655bb1863b16f3"], 0x11, 0x308, &(0x7f0000000400)="$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")
r0 = openat(0xffffffffffffff9c, &(0x7f0000000440)='./file1\x00', 0x103a42, 0x32)
ftruncate(r0, 0x6000000)
program crashed: possible deadlock in hfs_find_init
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat-ftruncate
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f00000007c0), &(0x7f0000000740)='./file1\x00', 0x3000cc0, &(0x7f0000000800)=ANY=[@ANYBLOB="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"], 0x11, 0x308, &(0x7f0000000400)="$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")
r0 = openat(0xffffffffffffff9c, &(0x7f0000000440)='./file1\x00', 0x103a42, 0x32)
ftruncate(r0, 0x6000000)
program crashed: possible deadlock in hfs_find_init
validation run: crashed=true
reproducing took 47m12.676988871s
repro crashed as (corrupted=false):
option from the mount to silence this warning.
=======================================================
hfs: unable to locate alternate MDB
hfs: continuing without an alternate MDB
============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz.0.17/5935 is trying to acquire lock:
ffff8880355700a0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
but task is already holding lock:
ffff8880355700a0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&tree->tree_lock/1);
lock(&tree->tree_lock/1);
*** DEADLOCK ***
May be due to missing lock nesting notation
5 locks held by syz.0.17/5935:
#0: ffff888035b0c500 (sb_writers#12){.+.+}-{0:0}, at: class_super_write_constructor include/linux/fs/super.h:130 [inline]
#0: ffff888035b0c500 (sb_writers#12){.+.+}-{0:0}, at: do_ftruncate+0x480/0x590 fs/open.c:193
#1: ffff88803528b670 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:1029 [inline]
#1: ffff88803528b670 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: do_truncate+0x18f/0x250 fs/open.c:63
#2: ffff88803528b498 (&HFS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfs_extend_file+0xf9/0x1680 fs/hfs/extent.c:397
#3: ffff8880355700a0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
#4: ffff88803528c818 (&HFS_I(tree->inode)->extents_lock){+.+.}-{4:4}, at: hfs_extend_file+0xf9/0x1680 fs/hfs/extent.c:397
stack backtrace:
CPU: 1 UID: 0 PID: 5935 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_deadlock_bug+0x279/0x290 kernel/locking/lockdep.c:3041
check_deadlock kernel/locking/lockdep.c:3093 [inline]
validate_chain kernel/locking/lockdep.c:3895 [inline]
__lock_acquire+0x24df/0x2ce0 kernel/locking/lockdep.c:5237
lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
__mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline]
mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:578
hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
hfs_extend_file+0x35f/0x1680 fs/hfs/extent.c:401
hfs_bmap_reserve+0x108/0x430 fs/hfs/btree.c:269
__hfs_ext_write_extent+0x1fc/0x470 fs/hfs/extent.c:121
__hfs_ext_cache_extent+0x6e/0x9b0 fs/hfs/extent.c:174
hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
hfs_extend_file+0x3a0/0x1680 fs/hfs/extent.c:401
hfs_get_block+0x401/0xbe0 fs/hfs/extent.c:353
__block_write_begin_int+0x6c2/0x1900 fs/buffer.c:2123
block_write_begin fs/buffer.c:2234 [inline]
cont_write_begin+0x71b/0xac0 fs/buffer.c:2596
hfs_write_begin+0x66/0xb0 fs/hfs/inode.c:54
cont_expand_zero fs/buffer.c:2524 [inline]
cont_write_begin+0x2d6/0xac0 fs/buffer.c:2586
hfs_write_begin+0x66/0xb0 fs/hfs/inode.c:54
hfs_file_truncate+0x1cf/0xb60 fs/hfs/extent.c:495
hfs_inode_setattr+0x49a/0x6c0 fs/hfs/inode.c:669
notify_change+0xbb8/0xec0 fs/attr.c:556
do_truncate+0x1c2/0x250 fs/open.c:68
do_ftruncate+0x4e0/0x590 fs/open.c:194
ksys_ftruncate fs/open.c:206 [inline]
__do_sys_ftruncate fs/open.c:211 [inline]
__se_sys_ftruncate fs/open.c:209 [inline]
__x64_sys_ftruncate+0x8f/0xe0 fs/open.c:209
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f25dfc6de59
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
RSP: 002b:00007ffcd4e5f158 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f25dfef5fa0 RCX: 00007f25dfc6de59
RDX: 0000000000000000 RSI: 0000000006000000 RDI: 0000000000000004
RBP: 00007f25dfd03e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f25dfef5fac R14: 00007f25dfef5fa0 R15: 00007f25dfef5fa0
------------[ cut here ]------------
rtmutex deadlock detected
WARNING: kernel/locking/rtmutex.c:1698 at rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1698, CPU#0: syz.0.17/5935
Modules linked in:
CPU: 0 UID: 0 PID: 5935 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1698
Code: 90 90 90 90 90 90 90 90 90 41 57 41 56 41 55 41 54 53 83 ff dd 0f 85 81 00 00 00 48 89 f7 e8 16 40 01 00 48 8d 3d 0f 2d 6f 04 <67> 48 0f b9 3a 4c 8d 3d 00 00 00 00 65 48 8b 1d 43 8d 59 07 4c 8d
RSP: 0018:ffffc9000402ed10 EFLAGS: 00010286
RAX: 0000000080000000 RBX: 00000000ffffffdd RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8bca5f60 RDI: ffffffff8fb2dfc0
RBP: ffffc9000402eea8 R08: ffffffff8faf74f7 R09: 1ffffffff1f5ee9e
R10: dffffc0000000000 R11: fffffbfff1f5ee9f R12: 1ffff92000805db0
R13: ffffffff8b43acf2 R14: ffff888035570048 R15: dffffc0000000000
FS: 000055555befd500(0000) GS:ffff888125c4c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe304b6e286 CR3: 0000000041a5e000 CR4: 00000000003526f0
Call Trace:
__rt_mutex_slowlock kernel/locking/rtmutex.c:1760 [inline]
__rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1787 [inline]
rt_mutex_slowlock+0x73c/0x780 kernel/locking/rtmutex.c:1827
__rt_mutex_lock kernel/locking/rtmutex.c:1842 [inline]
__mutex_lock_common kernel/locking/rtmutex_api.c:560 [inline]
mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:578
hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
hfs_extend_file+0x35f/0x1680 fs/hfs/extent.c:401
hfs_bmap_reserve+0x108/0x430 fs/hfs/btree.c:269
__hfs_ext_write_extent+0x1fc/0x470 fs/hfs/extent.c:121
__hfs_ext_cache_extent+0x6e/0x9b0 fs/hfs/extent.c:174
hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
hfs_extend_file+0x3a0/0x1680 fs/hfs/extent.c:401
hfs_get_block+0x401/0xbe0 fs/hfs/extent.c:353
__block_write_begin_int+0x6c2/0x1900 fs/buffer.c:2123
block_write_begin fs/buffer.c:2234 [inline]
cont_write_begin+0x71b/0xac0 fs/buffer.c:2596
hfs_write_begin+0x66/0xb0 fs/hfs/inode.c:54
cont_expand_zero fs/buffer.c:2524 [inline]
cont_write_begin+0x2d6/0xac0 fs/buffer.c:2586
hfs_write_begin+0x66/0xb0 fs/hfs/inode.c:54
hfs_file_truncate+0x1cf/0xb60 fs/hfs/extent.c:495
hfs_inode_setattr+0x49a/0x6c0 fs/hfs/inode.c:669
notify_change+0xbb8/0xec0 fs/attr.c:556
do_truncate+0x1c2/0x250 fs/open.c:68
do_ftruncate+0x4e0/0x590 fs/open.c:194
ksys_ftruncate fs/open.c:206 [inline]
__do_sys_ftruncate fs/open.c:211 [inline]
__se_sys_ftruncate fs/open.c:209 [inline]
__x64_sys_ftruncate+0x8f/0xe0 fs/open.c:209
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f25dfc6de59
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
RSP: 002b:00007ffcd4e5f158 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f25dfef5fa0 RCX: 00007f25dfc6de59
RDX: 0000000000000000 RSI: 0000000006000000 RDI: 0000000000000004
RBP: 00007f25dfd03e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f25dfef5fac R14: 00007f25dfef5fa0 R15: 00007f25dfef5fa0
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 41 57 push %r15
b: 41 56 push %r14
d: 41 55 push %r13
f: 41 54 push %r12
11: 53 push %rbx
12: 83 ff dd cmp $0xffffffdd,%edi
15: 0f 85 81 00 00 00 jne 0x9c
1b: 48 89 f7 mov %rsi,%rdi
1e: e8 16 40 01 00 call 0x14039
23: 48 8d 3d 0f 2d 6f 04 lea 0x46f2d0f(%rip),%rdi # 0x46f2d39
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 4c 8d 3d 00 00 00 00 lea 0x0(%rip),%r15 # 0x36
36: 65 48 8b 1d 43 8d 59 mov %gs:0x7598d43(%rip),%rbx # 0x7598d81
3d: 07
3e: 4c rex.WR
3f: 8d .byte 0x8d
final repro crashed as (corrupted=false):
option from the mount to silence this warning.
=======================================================
hfs: unable to locate alternate MDB
hfs: continuing without an alternate MDB
============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz.0.17/5935 is trying to acquire lock:
ffff8880355700a0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
but task is already holding lock:
ffff8880355700a0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&tree->tree_lock/1);
lock(&tree->tree_lock/1);
*** DEADLOCK ***
May be due to missing lock nesting notation
5 locks held by syz.0.17/5935:
#0: ffff888035b0c500 (sb_writers#12){.+.+}-{0:0}, at: class_super_write_constructor include/linux/fs/super.h:130 [inline]
#0: ffff888035b0c500 (sb_writers#12){.+.+}-{0:0}, at: do_ftruncate+0x480/0x590 fs/open.c:193
#1: ffff88803528b670 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:1029 [inline]
#1: ffff88803528b670 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: do_truncate+0x18f/0x250 fs/open.c:63
#2: ffff88803528b498 (&HFS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfs_extend_file+0xf9/0x1680 fs/hfs/extent.c:397
#3: ffff8880355700a0 (&tree->tree_lock/1){+.+.}-{4:4}, at: hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
#4: ffff88803528c818 (&HFS_I(tree->inode)->extents_lock){+.+.}-{4:4}, at: hfs_extend_file+0xf9/0x1680 fs/hfs/extent.c:397
stack backtrace:
CPU: 1 UID: 0 PID: 5935 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_deadlock_bug+0x279/0x290 kernel/locking/lockdep.c:3041
check_deadlock kernel/locking/lockdep.c:3093 [inline]
validate_chain kernel/locking/lockdep.c:3895 [inline]
__lock_acquire+0x24df/0x2ce0 kernel/locking/lockdep.c:5237
lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
__mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline]
mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:578
hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
hfs_extend_file+0x35f/0x1680 fs/hfs/extent.c:401
hfs_bmap_reserve+0x108/0x430 fs/hfs/btree.c:269
__hfs_ext_write_extent+0x1fc/0x470 fs/hfs/extent.c:121
__hfs_ext_cache_extent+0x6e/0x9b0 fs/hfs/extent.c:174
hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
hfs_extend_file+0x3a0/0x1680 fs/hfs/extent.c:401
hfs_get_block+0x401/0xbe0 fs/hfs/extent.c:353
__block_write_begin_int+0x6c2/0x1900 fs/buffer.c:2123
block_write_begin fs/buffer.c:2234 [inline]
cont_write_begin+0x71b/0xac0 fs/buffer.c:2596
hfs_write_begin+0x66/0xb0 fs/hfs/inode.c:54
cont_expand_zero fs/buffer.c:2524 [inline]
cont_write_begin+0x2d6/0xac0 fs/buffer.c:2586
hfs_write_begin+0x66/0xb0 fs/hfs/inode.c:54
hfs_file_truncate+0x1cf/0xb60 fs/hfs/extent.c:495
hfs_inode_setattr+0x49a/0x6c0 fs/hfs/inode.c:669
notify_change+0xbb8/0xec0 fs/attr.c:556
do_truncate+0x1c2/0x250 fs/open.c:68
do_ftruncate+0x4e0/0x590 fs/open.c:194
ksys_ftruncate fs/open.c:206 [inline]
__do_sys_ftruncate fs/open.c:211 [inline]
__se_sys_ftruncate fs/open.c:209 [inline]
__x64_sys_ftruncate+0x8f/0xe0 fs/open.c:209
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f25dfc6de59
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
RSP: 002b:00007ffcd4e5f158 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f25dfef5fa0 RCX: 00007f25dfc6de59
RDX: 0000000000000000 RSI: 0000000006000000 RDI: 0000000000000004
RBP: 00007f25dfd03e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f25dfef5fac R14: 00007f25dfef5fa0 R15: 00007f25dfef5fa0
------------[ cut here ]------------
rtmutex deadlock detected
WARNING: kernel/locking/rtmutex.c:1698 at rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1698, CPU#0: syz.0.17/5935
Modules linked in:
CPU: 0 UID: 0 PID: 5935 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1698
Code: 90 90 90 90 90 90 90 90 90 41 57 41 56 41 55 41 54 53 83 ff dd 0f 85 81 00 00 00 48 89 f7 e8 16 40 01 00 48 8d 3d 0f 2d 6f 04 <67> 48 0f b9 3a 4c 8d 3d 00 00 00 00 65 48 8b 1d 43 8d 59 07 4c 8d
RSP: 0018:ffffc9000402ed10 EFLAGS: 00010286
RAX: 0000000080000000 RBX: 00000000ffffffdd RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8bca5f60 RDI: ffffffff8fb2dfc0
RBP: ffffc9000402eea8 R08: ffffffff8faf74f7 R09: 1ffffffff1f5ee9e
R10: dffffc0000000000 R11: fffffbfff1f5ee9f R12: 1ffff92000805db0
R13: ffffffff8b43acf2 R14: ffff888035570048 R15: dffffc0000000000
FS: 000055555befd500(0000) GS:ffff888125c4c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe304b6e286 CR3: 0000000041a5e000 CR4: 00000000003526f0
Call Trace:
__rt_mutex_slowlock kernel/locking/rtmutex.c:1760 [inline]
__rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1787 [inline]
rt_mutex_slowlock+0x73c/0x780 kernel/locking/rtmutex.c:1827
__rt_mutex_lock kernel/locking/rtmutex.c:1842 [inline]
__mutex_lock_common kernel/locking/rtmutex_api.c:560 [inline]
mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:578
hfs_find_init+0x18d/0x300 fs/hfs/bfind.c:-1
hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
hfs_extend_file+0x35f/0x1680 fs/hfs/extent.c:401
hfs_bmap_reserve+0x108/0x430 fs/hfs/btree.c:269
__hfs_ext_write_extent+0x1fc/0x470 fs/hfs/extent.c:121
__hfs_ext_cache_extent+0x6e/0x9b0 fs/hfs/extent.c:174
hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
hfs_extend_file+0x3a0/0x1680 fs/hfs/extent.c:401
hfs_get_block+0x401/0xbe0 fs/hfs/extent.c:353
__block_write_begin_int+0x6c2/0x1900 fs/buffer.c:2123
block_write_begin fs/buffer.c:2234 [inline]
cont_write_begin+0x71b/0xac0 fs/buffer.c:2596
hfs_write_begin+0x66/0xb0 fs/hfs/inode.c:54
cont_expand_zero fs/buffer.c:2524 [inline]
cont_write_begin+0x2d6/0xac0 fs/buffer.c:2586
hfs_write_begin+0x66/0xb0 fs/hfs/inode.c:54
hfs_file_truncate+0x1cf/0xb60 fs/hfs/extent.c:495
hfs_inode_setattr+0x49a/0x6c0 fs/hfs/inode.c:669
notify_change+0xbb8/0xec0 fs/attr.c:556
do_truncate+0x1c2/0x250 fs/open.c:68
do_ftruncate+0x4e0/0x590 fs/open.c:194
ksys_ftruncate fs/open.c:206 [inline]
__do_sys_ftruncate fs/open.c:211 [inline]
__se_sys_ftruncate fs/open.c:209 [inline]
__x64_sys_ftruncate+0x8f/0xe0 fs/open.c:209
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f25dfc6de59
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
RSP: 002b:00007ffcd4e5f158 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f25dfef5fa0 RCX: 00007f25dfc6de59
RDX: 0000000000000000 RSI: 0000000006000000 RDI: 0000000000000004
RBP: 00007f25dfd03e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f25dfef5fac R14: 00007f25dfef5fa0 R15: 00007f25dfef5fa0
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 41 57 push %r15
b: 41 56 push %r14
d: 41 55 push %r13
f: 41 54 push %r12
11: 53 push %rbx
12: 83 ff dd cmp $0xffffffdd,%edi
15: 0f 85 81 00 00 00 jne 0x9c
1b: 48 89 f7 mov %rsi,%rdi
1e: e8 16 40 01 00 call 0x14039
23: 48 8d 3d 0f 2d 6f 04 lea 0x46f2d0f(%rip),%rdi # 0x46f2d39
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 4c 8d 3d 00 00 00 00 lea 0x0(%rip),%r15 # 0x36
36: 65 48 8b 1d 43 8d 59 mov %gs:0x7598d43(%rip),%rbx # 0x7598d81
3d: 07
3e: 4c rex.WR
3f: 8d .byte 0x8d