==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: use-after-free in atomic_long_add_return_acquire include/linux/atomic/atomic-instrumented.h:1309 [inline]
BUG: KASAN: use-after-free in rwsem_read_trylock kernel/locking/rwsem.c:243 [inline]
BUG: KASAN: use-after-free in __down_read_common kernel/locking/rwsem.c:1259 [inline]
BUG: KASAN: use-after-free in __down_read kernel/locking/rwsem.c:1269 [inline]
BUG: KASAN: use-after-free in down_read+0xa5/0x450 kernel/locking/rwsem.c:1511
Write of size 8 at addr ffff888145282b08 by task syz-executor225/14126
CPU: 0 PID: 14126 Comm: syz-executor225 Not tainted 6.1.0-rc4-syzkaller-00308-gf5020a08b2b3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:284 [inline]
print_report+0x15e/0x45d mm/kasan/report.c:395
kasan_report+0xbb/0x1f0 mm/kasan/report.c:495
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189
instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
atomic_long_add_return_acquire include/linux/atomic/atomic-instrumented.h:1309 [inline]
rwsem_read_trylock kernel/locking/rwsem.c:243 [inline]
__down_read_common kernel/locking/rwsem.c:1259 [inline]
__down_read kernel/locking/rwsem.c:1269 [inline]
down_read+0xa5/0x450 kernel/locking/rwsem.c:1511
hugetlb_vma_lock_read mm/hugetlb.c:6816 [inline]
hugetlb_fault+0x40a/0x2060 mm/hugetlb.c:5859
handle_mm_fault+0x640/0x780 mm/memory.c:5216
do_user_addr_fault+0x475/0x1210 arch/x86/mm/fault.c:1428
handle_page_fault arch/x86/mm/fault.c:1519 [inline]
exc_page_fault+0x94/0x170 arch/x86/mm/fault.c:1575
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:copy_user_short_string+0xa/0x40 arch/x86/lib/copy_user_64.S:232
Code: 83 f8 12 74 0a 89 d1 f3 a4 89 c8 0f 01 ca c3 89 d0 0f 01 ca c3 01 ca eb e7 0f 1f 80 00 00 00 00 89 d1 83 e2 07 c1 e9 03 74 12 <4c> 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10
RSP: 0018:ffffc9000668fbb8 EFLAGS: 00050202
RAX: 0000000000000001 RBX: 0000000000000010 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffc9000668fda8
RBP: ffffc9000668fda8 R08: 0000000000000001 R09: ffffc9000668fdb7
R10: fffff52000cd1fb6 R11: 0000000000000001 R12: 00007fffffffeff0
R13: 00000000200000c0 R14: 0000000000000010 R15: ffffc9000668fda8
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline]
_copy_from_user+0x137/0x170 lib/usercopy.c:16
copy_from_user include/linux/uaccess.h:161 [inline]
copy_iovec_from_user lib/iov_iter.c:1720 [inline]
iovec_from_user lib/iov_iter.c:1755 [inline]
iovec_from_user+0x149/0x3a0 lib/iov_iter.c:1730
__import_iovec+0x65/0x610 lib/iov_iter.c:1773
import_iovec+0x10c/0x150 lib/iov_iter.c:1838
vfs_writev+0xc1/0x630 fs/read_write.c:931
do_writev+0x133/0x2f0 fs/read_write.c:977
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8e25ce5aa9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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:00007f8e25c76208 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f8e25d6d3f8 RCX: 00007f8e25ce5aa9
RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f8e25d6d3f0 R08: 00007f8e25d6d3f0 R09: 0000000000000000
R10: 00007f8e25c76210 R11: 0000000000000246 R12: 00007f8e25d6d3fc
R13: 00007ffc28a02c1f R14: 00007f8e25c76300 R15: 0000000000022000
</TASK>
Allocated by task 14125:
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
kasan_set_track+0x21/0x30 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:371 [inline]
____kasan_kmalloc mm/kasan/common.c:330 [inline]
__kasan_kmalloc+0xa1/0xb0 mm/kasan/common.c:380
kmalloc include/linux/slab.h:553 [inline]
hugetlb_vma_lock_alloc.part.0+0x3f/0x130 mm/hugetlb.c:6926
hugetlb_vma_lock_alloc mm/hugetlb.c:6682 [inline]
hugetlb_reserve_pages+0xa3f/0xe80 mm/hugetlb.c:6551
hugetlbfs_file_mmap+0x40c/0x5c0 fs/hugetlbfs/inode.c:167
call_mmap include/linux/fs.h:2196 [inline]
mmap_region+0x6bf/0x1c00 mm/mmap.c:2625
do_mmap+0x825/0xf50 mm/mmap.c:1412
vm_mmap_pgoff+0x1ab/0x270 mm/util.c:520
ksys_mmap_pgoff+0x1c3/0x5a0 mm/mmap.c:1458
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Freed by task 14125:
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
kasan_set_track+0x21/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2a/0x40 mm/kasan/generic.c:511
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1724 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1750
slab_free mm/slub.c:3661 [inline]
__kmem_cache_free+0xab/0x3b0 mm/slub.c:3674
hugetlb_vma_lock_release mm/hugetlb.c:6871 [inline]
kref_put include/linux/kref.h:65 [inline]
__hugetlb_vma_unlock_write_put mm/hugetlb.c:6886 [inline]
__hugetlb_vma_unlock_write_free mm/hugetlb.c:6894 [inline]
__unmap_hugepage_range_final+0x2ad/0x340 mm/hugetlb.c:5215
unmap_single_vma+0x23d/0x2a0 mm/memory.c:1690
zap_page_range+0x38a/0x520 mm/memory.c:1762
madvise_dontneed_single_vma mm/madvise.c:793 [inline]
madvise_dontneed_free mm/madvise.c:886 [inline]
madvise_vma_behavior+0x11ca/0x1e60 mm/madvise.c:1025
madvise_walk_vmas+0x1c7/0x2b0 mm/madvise.c:1250
do_madvise.part.0+0x24a/0x340 mm/madvise.c:1429
do_madvise mm/madvise.c:1442 [inline]
__do_sys_madvise mm/madvise.c:1442 [inline]
__se_sys_madvise mm/madvise.c:1440 [inline]
__x64_sys_madvise+0x113/0x150 mm/madvise.c:1440
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
The buggy address belongs to the object at ffff888145282b00
which belongs to the cache kmalloc-192 of size 192
The buggy address is located 8 bytes inside of
192-byte region [ffff888145282b00, ffff888145282bc0)
The buggy address belongs to the physical page:
page:ffffea000514a080 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x145282
flags: 0x57ff00000000200(slab|node=1|zone=2|lastcpupid=0x7ff)
raw: 057ff00000000200 dead000000000100 dead000000000122 ffff888011841a00
raw: 0000000000000000 0000000080100010 00000001ffffffff 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 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (swapper/0), ts 1956926677, free_ts 0
prep_new_page mm/page_alloc.c:2539 [inline]
get_page_from_freelist+0x10b5/0x2d50 mm/page_alloc.c:4288
__alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5555
alloc_page_interleave+0x1e/0x200 mm/mempolicy.c:2118
alloc_pages+0x22f/0x270 mm/mempolicy.c:2280
alloc_slab_page mm/slub.c:1794 [inline]
allocate_slab+0x213/0x300 mm/slub.c:1939
new_slab mm/slub.c:1992 [inline]
___slab_alloc+0xa91/0x1400 mm/slub.c:3180
__slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3279
slab_alloc_node mm/slub.c:3364 [inline]
__kmem_cache_alloc_node+0x191/0x3e0 mm/slub.c:3437
kmalloc_trace+0x22/0x60 mm/slab_common.c:1045
kmalloc include/linux/slab.h:553 [inline]
kzalloc include/linux/slab.h:689 [inline]
call_usermodehelper_setup+0x97/0x340 kernel/umh.c:366
kobject_uevent_env+0xecf/0x1620 lib/kobject_uevent.c:614
kernel_add_sysfs_param kernel/params.c:816 [inline]
param_sysfs_builtin kernel/params.c:851 [inline]
param_sysfs_init+0x367/0x43b kernel/params.c:970
do_one_initcall+0x13d/0x780 init/main.c:1303
do_initcall_level init/main.c:1376 [inline]
do_initcalls init/main.c:1392 [inline]
do_basic_setup init/main.c:1411 [inline]
kernel_init_freeable+0x6ff/0x788 init/main.c:1631
kernel_init+0x1a/0x1d0 init/main.c:1519
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
page_owner free stack trace missing
Memory state around the buggy address:
ffff888145282a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888145282a80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888145282b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888145282b80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff888145282c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 83 f8 12 cmp $0x12,%eax
3: 74 0a je 0xf
5: 89 d1 mov %edx,%ecx
7: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi)
9: 89 c8 mov %ecx,%eax
b: 0f 01 ca clac
e: c3 retq
f: 89 d0 mov %edx,%eax
11: 0f 01 ca clac
14: c3 retq
15: 01 ca add %ecx,%edx
17: eb e7 jmp 0x0
19: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
20: 89 d1 mov %edx,%ecx
22: 83 e2 07 and $0x7,%edx
25: c1 e9 03 shr $0x3,%ecx
28: 74 12 je 0x3c
* 2a: 4c 8b 06 mov (%rsi),%r8 <-- trapping instruction
2d: 4c 89 07 mov %r8,(%rdi)
30: 48 8d 76 08 lea 0x8(%rsi),%rsi
34: 48 8d 7f 08 lea 0x8(%rdi),%rdi
38: ff c9 dec %ecx
3a: 75 ee jne 0x2a
3c: 21 d2 and %edx,%edx
3e: 74 10 je 0x50