Extracting prog: 2m18.023311214s
Minimizing prog: 52.68µs
Simplifying prog options: 0s
Extracting C: 47.537457205s
Simplifying C: 9m57.772755757s
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$hfs
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000100), &(0x7f00000000c0)='./bus\x00', 0x410, &(0x7f0000000040)=ANY=[@ANYRES64=0x0, @ANYRES16=0x0, @ANYRES32=0x0, @ANYRES8, @ANYRES8], 0x1, 0x2d0, &(0x7f00000005c0)="$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")
program crashed: general protection fault in hfs_find_init
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
extracting C reproducer
testing compiled C program (duration=46.552267306s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs
program crashed: general protection fault in hfs_find_init
simplifying C reproducer
testing compiled C program (duration=46.552267306s, {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$hfs
program crashed: general protection fault in hfs_find_init
testing compiled C program (duration=46.552267306s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs
program crashed: general protection fault in hfs_find_init
testing compiled C program (duration=46.552267306s, {Threaded:false Repeat:false 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$hfs
program crashed: general protection fault in hfs_find_init
testing compiled C program (duration=46.552267306s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs
program crashed: general protection fault in hfs_find_init
testing compiled C program (duration=46.552267306s, {Threaded:false Repeat:false 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$hfs
program crashed: general protection fault in hfs_find_init
testing compiled C program (duration=46.552267306s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs
program crashed: general protection fault in hfs_find_init
testing compiled C program (duration=46.552267306s, {Threaded:false Repeat:false 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$hfs
program crashed: general protection fault in hfs_find_init
testing program (duration=46.552267306s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000100), &(0x7f00000000c0)='./bus\x00', 0x410, &(0x7f0000000040)=ANY=[@ANYRES64=0x0, @ANYRES16=0x0, @ANYRES32=0x0, @ANYRES8, @ANYRES8], 0x1, 0x2d0, &(0x7f00000005c0)="$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")
program crashed: general protection fault in hfs_find_init
validation run: crashed=true
testing program (duration=46.552267306s, {Threaded:false Repeat:false 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$hfs
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000100), &(0x7f00000000c0)='./bus\x00', 0x410, &(0x7f0000000040)=ANY=[@ANYRES64=0x0, @ANYRES16=0x0, @ANYRES32=0x0, @ANYRES8, @ANYRES8], 0x1, 0x2d0, &(0x7f00000005c0)="$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")
program crashed: general protection fault in hfs_find_init
validation run: crashed=true
testing program (duration=46.552267306s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000100), &(0x7f00000000c0)='./bus\x00', 0x410, &(0x7f0000000040)=ANY=[@ANYRES64=0x0, @ANYRES16=0x0, @ANYRES32=0x0, @ANYRES8, @ANYRES8], 0x1, 0x2d0, &(0x7f00000005c0)="$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")
program crashed: general protection fault in hfs_find_init
validation run: crashed=true
reproducing took 16m48.881078016s
repro crashed as (corrupted=false):
loop0: detected capacity change from 0 to 64
general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 1 PID: 4425 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:hfs_find_init+0x64/0x1d0 fs/hfs/bfind.c:21
Code: 8d 7e 18 4c 89 f8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ff e8 fe c8 88 ff 49 c7 07 00 00 00 00 4c 8d 63 40 4d 89 e7 49 c1 ef 03 <41> 0f b6 04 2f 84 c0 0f 85 f6 00 00 00 41 8b 04 24 8d 7c 00 04 be
RSP: 0018:ffffc90003367448 EFLAGS: 00010202
RAX: 1ffff9200066cea7 RBX: 0000000000000000 RCX: ffff8880735f3c00
RDX: 0000000000000000 RSI: ffffc90003367520 RDI: ffffc90003367530
RBP: dffffc0000000000 R08: ffffc90003367557 R09: ffffc90003367520
R10: dffffc0000000000 R11: fffff5200066ceab R12: 0000000000000040
R13: ffffc90003367520 R14: ffffc90003367520 R15: 0000000000000008
FS: 00005555614a3500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f739784b945 CR3: 00000000207ed000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
hfs_get_block+0x4f8/0xbe0 fs/hfs/extent.c:366
block_read_full_folio+0x405/0xf80 fs/buffer.c:2271
filemap_read_folio+0x164/0x7a0 mm/filemap.c:2490
do_read_cache_folio+0x29e/0x790 mm/filemap.c:3659
do_read_cache_page+0x32/0x230 mm/filemap.c:3701
read_mapping_page include/linux/pagemap.h:793 [inline]
hfs_btree_open+0x568/0x10b0 fs/hfs/btree.c:78
hfs_mdb_get+0x13d8/0x2150 fs/hfs/mdb.c:199
hfs_fill_super+0xeaf/0x14e0 fs/hfs/super.c:406
mount_bdev+0x28a/0x3c0 fs/super.c:1443
legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
vfs_get_tree+0x88/0x270 fs/super.c:1573
do_new_mount+0x247/0xa40 fs/namespace.c:3078
do_mount fs/namespace.c:3421 [inline]
__do_sys_mount fs/namespace.c:3629 [inline]
__se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f739779e0ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe27f935d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe27f93660 RCX: 00007f739779e0ca
RDX: 0000200000000100 RSI: 00002000000000c0 RDI: 00007ffe27f93620
RBP: 0000200000000100 R08: 00007ffe27f93660 R09: 0000000000000410
R10: 0000000000000410 R11: 0000000000000246 R12: 00002000000000c0
R13: 00007ffe27f93620 R14: 00000000000002d0 R15: 0000200000000040
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfs_find_init+0x64/0x1d0 fs/hfs/bfind.c:21
Code: 8d 7e 18 4c 89 f8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ff e8 fe c8 88 ff 49 c7 07 00 00 00 00 4c 8d 63 40 4d 89 e7 49 c1 ef 03 <41> 0f b6 04 2f 84 c0 0f 85 f6 00 00 00 41 8b 04 24 8d 7c 00 04 be
RSP: 0018:ffffc90003367448 EFLAGS: 00010202
RAX: 1ffff9200066cea7 RBX: 0000000000000000 RCX: ffff8880735f3c00
RDX: 0000000000000000 RSI: ffffc90003367520 RDI: ffffc90003367530
RBP: dffffc0000000000 R08: ffffc90003367557 R09: ffffc90003367520
R10: dffffc0000000000 R11: fffff5200066ceab R12: 0000000000000040
R13: ffffc90003367520 R14: ffffc90003367520 R15: 0000000000000008
FS: 00005555614a3500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f79387aa000 CR3: 00000000207ed000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 8d 7e 18 lea 0x18(%rsi),%edi
3: 4c 89 f8 mov %r15,%rax
6: 48 c1 e8 03 shr $0x3,%rax
a: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1)
e: 74 08 je 0x18
10: 4c 89 ff mov %r15,%rdi
13: e8 fe c8 88 ff call 0xff88c916
18: 49 c7 07 00 00 00 00 movq $0x0,(%r15)
1f: 4c 8d 63 40 lea 0x40(%rbx),%r12
23: 4d 89 e7 mov %r12,%r15
26: 49 c1 ef 03 shr $0x3,%r15
* 2a: 41 0f b6 04 2f movzbl (%r15,%rbp,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 f6 00 00 00 jne 0x12d
37: 41 8b 04 24 mov (%r12),%eax
3b: 8d 7c 00 04 lea 0x4(%rax,%rax,1),%edi
3f: be .byte 0xbe
final repro crashed as (corrupted=false):
loop0: detected capacity change from 0 to 64
general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 1 PID: 4425 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:hfs_find_init+0x64/0x1d0 fs/hfs/bfind.c:21
Code: 8d 7e 18 4c 89 f8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ff e8 fe c8 88 ff 49 c7 07 00 00 00 00 4c 8d 63 40 4d 89 e7 49 c1 ef 03 <41> 0f b6 04 2f 84 c0 0f 85 f6 00 00 00 41 8b 04 24 8d 7c 00 04 be
RSP: 0018:ffffc90003367448 EFLAGS: 00010202
RAX: 1ffff9200066cea7 RBX: 0000000000000000 RCX: ffff8880735f3c00
RDX: 0000000000000000 RSI: ffffc90003367520 RDI: ffffc90003367530
RBP: dffffc0000000000 R08: ffffc90003367557 R09: ffffc90003367520
R10: dffffc0000000000 R11: fffff5200066ceab R12: 0000000000000040
R13: ffffc90003367520 R14: ffffc90003367520 R15: 0000000000000008
FS: 00005555614a3500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f739784b945 CR3: 00000000207ed000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hfs_ext_read_extent fs/hfs/extent.c:200 [inline]
hfs_get_block+0x4f8/0xbe0 fs/hfs/extent.c:366
block_read_full_folio+0x405/0xf80 fs/buffer.c:2271
filemap_read_folio+0x164/0x7a0 mm/filemap.c:2490
do_read_cache_folio+0x29e/0x790 mm/filemap.c:3659
do_read_cache_page+0x32/0x230 mm/filemap.c:3701
read_mapping_page include/linux/pagemap.h:793 [inline]
hfs_btree_open+0x568/0x10b0 fs/hfs/btree.c:78
hfs_mdb_get+0x13d8/0x2150 fs/hfs/mdb.c:199
hfs_fill_super+0xeaf/0x14e0 fs/hfs/super.c:406
mount_bdev+0x28a/0x3c0 fs/super.c:1443
legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
vfs_get_tree+0x88/0x270 fs/super.c:1573
do_new_mount+0x247/0xa40 fs/namespace.c:3078
do_mount fs/namespace.c:3421 [inline]
__do_sys_mount fs/namespace.c:3629 [inline]
__se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f739779e0ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe27f935d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe27f93660 RCX: 00007f739779e0ca
RDX: 0000200000000100 RSI: 00002000000000c0 RDI: 00007ffe27f93620
RBP: 0000200000000100 R08: 00007ffe27f93660 R09: 0000000000000410
R10: 0000000000000410 R11: 0000000000000246 R12: 00002000000000c0
R13: 00007ffe27f93620 R14: 00000000000002d0 R15: 0000200000000040
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfs_find_init+0x64/0x1d0 fs/hfs/bfind.c:21
Code: 8d 7e 18 4c 89 f8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ff e8 fe c8 88 ff 49 c7 07 00 00 00 00 4c 8d 63 40 4d 89 e7 49 c1 ef 03 <41> 0f b6 04 2f 84 c0 0f 85 f6 00 00 00 41 8b 04 24 8d 7c 00 04 be
RSP: 0018:ffffc90003367448 EFLAGS: 00010202
RAX: 1ffff9200066cea7 RBX: 0000000000000000 RCX: ffff8880735f3c00
RDX: 0000000000000000 RSI: ffffc90003367520 RDI: ffffc90003367530
RBP: dffffc0000000000 R08: ffffc90003367557 R09: ffffc90003367520
R10: dffffc0000000000 R11: fffff5200066ceab R12: 0000000000000040
R13: ffffc90003367520 R14: ffffc90003367520 R15: 0000000000000008
FS: 00005555614a3500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f79387aa000 CR3: 00000000207ed000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 8d 7e 18 lea 0x18(%rsi),%edi
3: 4c 89 f8 mov %r15,%rax
6: 48 c1 e8 03 shr $0x3,%rax
a: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1)
e: 74 08 je 0x18
10: 4c 89 ff mov %r15,%rdi
13: e8 fe c8 88 ff call 0xff88c916
18: 49 c7 07 00 00 00 00 movq $0x0,(%r15)
1f: 4c 8d 63 40 lea 0x40(%rbx),%r12
23: 4d 89 e7 mov %r12,%r15
26: 49 c1 ef 03 shr $0x3,%r15
* 2a: 41 0f b6 04 2f movzbl (%r15,%rbp,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 f6 00 00 00 jne 0x12d
37: 41 8b 04 24 mov (%r12),%eax
3b: 8d 7c 00 04 lea 0x4(%rax,%rax,1),%edi
3f: be .byte 0xbe