Extracting prog: 1m54.017090951s
Minimizing prog: 9m59.571668807s
Simplifying prog options: 0s
Extracting C: 36.438313532s
Simplifying C: 5m46.664298737s


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$hfs-unlinkat-mkdirat-mkdir
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000140), &(0x7f0000000280)='./file1\x00', 0x0, &(0x7f0000000000)=ANY=[], 0x8b, 0x2c4, &(0x7f00000003c0)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./file1\x00', 0x0)
mkdir(&(0x7f00000004c0)='./bus\x00', 0x0)

program crashed: KASAN: slab-out-of-bounds Write in hfs_bnode_read
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=1m5.293420323s, {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$hfs-unlinkat-mkdirat
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000140), &(0x7f0000000280)='./file1\x00', 0x0, &(0x7f0000000000)=ANY=[], 0x8b, 0x2c4, &(0x7f00000003c0)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./file1\x00', 0x0)

program did not crash
testing program (duration=1m5.293420323s, {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$hfs-unlinkat-mkdir
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000140), &(0x7f0000000280)='./file1\x00', 0x0, &(0x7f0000000000)=ANY=[], 0x8b, 0x2c4, &(0x7f00000003c0)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)
mkdir(&(0x7f00000004c0)='./bus\x00', 0x0)

program did not crash
testing program (duration=1m5.293420323s, {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$hfs-mkdirat-mkdir
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000140), &(0x7f0000000280)='./file1\x00', 0x0, &(0x7f0000000000)=ANY=[], 0x8b, 0x2c4, &(0x7f00000003c0)="$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")
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./file1\x00', 0x0)
mkdir(&(0x7f00000004c0)='./bus\x00', 0x0)

program did not crash
testing program (duration=1m5.293420323s, {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}}): unlinkat-mkdirat-mkdir
detailed listing:
executing program 0:
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./file1\x00', 0x0)
mkdir(&(0x7f00000004c0)='./bus\x00', 0x0)

program did not crash
testing program (duration=1m5.293420323s, {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$hfs-unlinkat-mkdirat-mkdir
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000140), &(0x7f0000000280)='./file1\x00', 0x0, &(0x7f0000000000)=ANY=[], 0x8b, 0x2c4, &(0x7f00000003c0)="$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")
unlinkat(0xffffffffffffff9c, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./file1\x00', 0x0)
mkdir(&(0x7f00000004c0)='./bus\x00', 0x0)

program did not crash
testing program (duration=1m5.293420323s, {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$hfs-unlinkat-mkdirat-mkdir
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000140), &(0x7f0000000280)='./file1\x00', 0x0, &(0x7f0000000000)=ANY=[], 0x8b, 0x2c4, &(0x7f00000003c0)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x0)
mkdir(&(0x7f00000004c0)='./bus\x00', 0x0)

program did not crash
testing program (duration=1m5.293420323s, {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$hfs-unlinkat-mkdirat-mkdir
detailed listing:
executing program 0:
syz_mount_image$hfs(&(0x7f0000000140), &(0x7f0000000280)='./file1\x00', 0x0, &(0x7f0000000000)=ANY=[], 0x8b, 0x2c4, &(0x7f00000003c0)="$eJzs3U9rE0EYx/Hf7KZpamtdbUUQD1ItepK2XsRLQYqvwYuiNhGKocVaQb0YPIsvwLsXX4AvwpMInvXkyRfQ28psJmY2mU2a2GZb/H4gZrM7f57ZbHbnCaYrAP+tOxs/Pt78ZR9GihVLui1FdtNlVSSd14Xai+29rb1moz6ooViqKXsYKatp+spsbjdCVW29rIaT2FcVzfnrcDTSNE1/lh0EylRzz3FoYyRNu09n7Bc+SaZ6XrdiqVVSLMeF2de+Xmq+7DgAAOUy7et75K7zc27+HkXSsrvs+9f/76dLjndU+ev9Ne2XFsnx4F3/sywrNfb9PZNt6uZ7WQpnt0edLHHUfuzksar2kZWbYJp8VtmfLGaxRDNPtpqNG5s7zXqkt1p3vGKLktZVdzmrk4u2v+mlwLq8qopaG8lsNoYpO4a1gvgXQp2O3+Nw5ov5ah6YRB9U/zv/q6TGH7N7p+5OdeNfKWpu59l9+5y0SxWM8mzWycX8jh04yrgoI5HbU2ms/BcEST7OarBWVT212qNbLerJtbMQrLU2pNairfXJq9U9motrHqrp/lXmvblnlvRbn7Xhzf8ju7eX1f/JDDJZSXdkdMYTzA0rWcnEX9W6FGwzOuCYML7uPn6nx7ql+eevXj991Gw2die9YGOYeKcstBc6B8GhNJiWNQp7jvXXKGnsVibTe/Wfd11Nw8pM+4XzI+1d6HysD9B75yQ9NMIJn5lQiu6bXlzmzSQDwqTZk4dp539evrKSpUj2n2TAPD0dNm3zWlwN5Abd+ekpryXj8vXiDGg2mMG1NELOdeW6dNVbOSTnSnROmhk41pPEbOibHvL9PwAAAAAAAAAAAAAAAAAAwElzRD+T6Pzeq/d/lvMXfQAAAAAAAAAAAAAAAAAAAAAAGEPx/X9rOsL7/+Z+B3Dg+/8G7mYDYHx/AgAA///eonD7")
unlinkat(0xffffffffffffff9c, &(0x7f0000000380)='./file1\x00', 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000340)='./file1\x00', 0x0)
mkdir(0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m5.293420323s, {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$hfs-unlinkat-mkdirat-mkdir
program crashed: KASAN: slab-out-of-bounds Write in hfs_bnode_read
simplifying C reproducer
testing compiled C program (duration=1m5.293420323s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-unlinkat-mkdirat-mkdir
program crashed: KASAN: slab-out-of-bounds Write in hfs_bnode_read
testing compiled C program (duration=1m5.293420323s, {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$hfs-unlinkat-mkdirat-mkdir
program crashed: KASAN: slab-out-of-bounds Write in hfs_bnode_read
testing compiled C program (duration=1m5.293420323s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-unlinkat-mkdirat-mkdir
program crashed: KASAN: slab-out-of-bounds Write in hfs_bnode_read
testing compiled C program (duration=1m5.293420323s, {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$hfs-unlinkat-mkdirat-mkdir
program crashed: KASAN: slab-out-of-bounds Write in hfs_bnode_read
testing compiled C program (duration=1m5.293420323s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-unlinkat-mkdirat-mkdir
program crashed: KASAN: slab-out-of-bounds Write in hfs_bnode_read
testing compiled C program (duration=1m5.293420323s, {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$hfs-unlinkat-mkdirat-mkdir
program crashed: KASAN: slab-out-of-bounds Write in hfs_bnode_read
testing compiled C program (duration=1m5.293420323s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-unlinkat-mkdirat-mkdir
program crashed: KASAN: slab-out-of-bounds Write in hfs_bnode_read
reproducing took 18m16.691397626s
repro crashed as (corrupted=false):
loop0: detected capacity change from 0 to 64
==================================================================
BUG: KASAN: slab-out-of-bounds in memcpy_from_page include/linux/highmem.h:423 [inline]
BUG: KASAN: slab-out-of-bounds in hfs_bnode_read+0x167/0x200 fs/hfs/bnode.c:35
Write of size 94 at addr ffff8880405be780 by task syz-executor197/5308

CPU: 0 UID: 0 PID: 5308 Comm: syz-executor197 Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0x16e/0x5b0 mm/kasan/report.c:521
 kasan_report+0x143/0x180 mm/kasan/report.c:634
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106
 memcpy_from_page include/linux/highmem.h:423 [inline]
 hfs_bnode_read+0x167/0x200 fs/hfs/bnode.c:35
 hfs_bnode_read_key+0x172/0x240 fs/hfs/bnode.c:70
 hfs_brec_insert+0x7f3/0xbd0 fs/hfs/brec.c:159
 hfs_cat_create+0x3dc/0x760 fs/hfs/catalog.c:118
 hfs_mkdir+0x6c/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4313
 do_mkdirat+0x264/0x3a0 fs/namei.c:4336
 __do_sys_mkdir fs/namei.c:4356 [inline]
 __se_sys_mkdir fs/namei.c:4354 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4354
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f50f97bbad9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffc9dc7d08 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f50f97bbad9
RDX: 00007f50f97bbad9 RSI: 0000000000000000 RDI: 00004000000004c0
RBP: 00007f50f982f5f0 R08: 000055556baeb4c0 R09: 000055556baeb4c0
R10: 000055556baeb4c0 R11: 0000000000000246 R12: 00007fffc9dc7d30
R13: 00007fffc9dc7f58 R14: 431bde82d7b634db R15: 00007f50f980403b
 </TASK>

Allocated by task 5308:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4294 [inline]
 __kmalloc_noprof+0x285/0x4c0 mm/slub.c:4306
 kmalloc_noprof include/linux/slab.h:905 [inline]
 hfs_find_init+0x90/0x1f0 fs/hfs/bfind.c:21
 hfs_cat_create+0x17f/0x760 fs/hfs/catalog.c:96
 hfs_mkdir+0x6c/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4313
 do_mkdirat+0x264/0x3a0 fs/namei.c:4336
 __do_sys_mkdir fs/namei.c:4356 [inline]
 __se_sys_mkdir fs/namei.c:4354 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4354
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8880405be780
 which belongs to the cache kmalloc-96 of size 96
The buggy address is located 0 bytes inside of
 allocated 78-byte region [ffff8880405be780, ffff8880405be7ce)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x405be
flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000000 ffff88801b041280 dead000000000100 dead000000000122
raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 4740, tgid 4740 (udevadm), ts 27775161619, free_ts 27649736147
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
 prep_new_page mm/page_alloc.c:1559 [inline]
 get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477
 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab+0x8f/0x3a0 mm/slub.c:2587
 new_slab mm/slub.c:2640 [inline]
 ___slab_alloc+0xc27/0x14a0 mm/slub.c:3826
 __slab_alloc+0x58/0xa0 mm/slub.c:3916
 __slab_alloc_node mm/slub.c:3991 [inline]
 slab_alloc_node mm/slub.c:4152 [inline]
 __do_kmalloc_node mm/slub.c:4293 [inline]
 __kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4306
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
 tomoyo_encode+0x26f/0x540 security/tomoyo/realpath.c:80
 tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x258/0x4f0 security/tomoyo/file.c:771
 security_file_open+0xac/0x250 security/security.c:3114
 do_dentry_open+0x320/0x1960 fs/open.c:933
 vfs_open+0x3b/0x370 fs/open.c:1086
 do_open fs/namei.c:3830 [inline]
 path_openat+0x2c81/0x3590 fs/namei.c:3989
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
page last free pid 4740 tgid 4740 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_frozen_pages+0xe0d/0x10e0 mm/page_alloc.c:2660
 rcu_do_batch kernel/rcu/tree.c:2546 [inline]
 rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2802
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702

Memory state around the buggy address:
 ffff8880405be680: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8880405be700: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff8880405be780: 00 00 00 00 00 00 00 00 00 06 fc fc fc fc fc fc
                                              ^
 ffff8880405be800: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8880405be880: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
==================================================================

final repro crashed as (corrupted=false):
loop0: detected capacity change from 0 to 64
==================================================================
BUG: KASAN: slab-out-of-bounds in memcpy_from_page include/linux/highmem.h:423 [inline]
BUG: KASAN: slab-out-of-bounds in hfs_bnode_read+0x167/0x200 fs/hfs/bnode.c:35
Write of size 94 at addr ffff8880405be780 by task syz-executor197/5308

CPU: 0 UID: 0 PID: 5308 Comm: syz-executor197 Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0x16e/0x5b0 mm/kasan/report.c:521
 kasan_report+0x143/0x180 mm/kasan/report.c:634
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106
 memcpy_from_page include/linux/highmem.h:423 [inline]
 hfs_bnode_read+0x167/0x200 fs/hfs/bnode.c:35
 hfs_bnode_read_key+0x172/0x240 fs/hfs/bnode.c:70
 hfs_brec_insert+0x7f3/0xbd0 fs/hfs/brec.c:159
 hfs_cat_create+0x3dc/0x760 fs/hfs/catalog.c:118
 hfs_mkdir+0x6c/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4313
 do_mkdirat+0x264/0x3a0 fs/namei.c:4336
 __do_sys_mkdir fs/namei.c:4356 [inline]
 __se_sys_mkdir fs/namei.c:4354 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4354
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f50f97bbad9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffc9dc7d08 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f50f97bbad9
RDX: 00007f50f97bbad9 RSI: 0000000000000000 RDI: 00004000000004c0
RBP: 00007f50f982f5f0 R08: 000055556baeb4c0 R09: 000055556baeb4c0
R10: 000055556baeb4c0 R11: 0000000000000246 R12: 00007fffc9dc7d30
R13: 00007fffc9dc7f58 R14: 431bde82d7b634db R15: 00007f50f980403b
 </TASK>

Allocated by task 5308:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4294 [inline]
 __kmalloc_noprof+0x285/0x4c0 mm/slub.c:4306
 kmalloc_noprof include/linux/slab.h:905 [inline]
 hfs_find_init+0x90/0x1f0 fs/hfs/bfind.c:21
 hfs_cat_create+0x17f/0x760 fs/hfs/catalog.c:96
 hfs_mkdir+0x6c/0xe0 fs/hfs/dir.c:232
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4313
 do_mkdirat+0x264/0x3a0 fs/namei.c:4336
 __do_sys_mkdir fs/namei.c:4356 [inline]
 __se_sys_mkdir fs/namei.c:4354 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4354
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8880405be780
 which belongs to the cache kmalloc-96 of size 96
The buggy address is located 0 bytes inside of
 allocated 78-byte region [ffff8880405be780, ffff8880405be7ce)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x405be
flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000000 ffff88801b041280 dead000000000100 dead000000000122
raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 4740, tgid 4740 (udevadm), ts 27775161619, free_ts 27649736147
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
 prep_new_page mm/page_alloc.c:1559 [inline]
 get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477
 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab+0x8f/0x3a0 mm/slub.c:2587
 new_slab mm/slub.c:2640 [inline]
 ___slab_alloc+0xc27/0x14a0 mm/slub.c:3826
 __slab_alloc+0x58/0xa0 mm/slub.c:3916
 __slab_alloc_node mm/slub.c:3991 [inline]
 slab_alloc_node mm/slub.c:4152 [inline]
 __do_kmalloc_node mm/slub.c:4293 [inline]
 __kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4306
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
 tomoyo_encode+0x26f/0x540 security/tomoyo/realpath.c:80
 tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_check_open_permission+0x258/0x4f0 security/tomoyo/file.c:771
 security_file_open+0xac/0x250 security/security.c:3114
 do_dentry_open+0x320/0x1960 fs/open.c:933
 vfs_open+0x3b/0x370 fs/open.c:1086
 do_open fs/namei.c:3830 [inline]
 path_openat+0x2c81/0x3590 fs/namei.c:3989
 do_filp_open+0x27f/0x4e0 fs/namei.c:4016
page last free pid 4740 tgid 4740 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_frozen_pages+0xe0d/0x10e0 mm/page_alloc.c:2660
 rcu_do_batch kernel/rcu/tree.c:2546 [inline]
 rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2802
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702

Memory state around the buggy address:
 ffff8880405be680: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8880405be700: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff8880405be780: 00 00 00 00 00 00 00 00 00 06 fc fc fc fc fc fc
                                              ^
 ffff8880405be800: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8880405be880: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
==================================================================