exFAT-fs (loop1): failed to load upcase table (idx : 0x00010000, chksum : 0xe3157ffd, utbl_chksum : 0xe619d30d)
======================================================
WARNING: possible circular locking dependency detected
5.15.117-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.1/25444 is trying to acquire lock:
ffff8880a39e3850 (mapping.invalidate_lock#9){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:842 [inline]
ffff8880a39e3850 (mapping.invalidate_lock#9){.+.+}-{3:3}, at: filemap_fault+0x708/0x1470 mm/filemap.c:3072
but task is already holding lock:
ffff8880952a1628 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
ffff8880952a1628 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
ffff8880952a1628 (&mm->mmap_lock#2){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1485 [inline]
ffff8880952a1628 (&mm->mmap_lock#2){++++}-{3:3}, at: exc_page_fault+0x181/0x740 arch/x86/mm/fault.c:1541
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&mm->mmap_lock#2){++++}-{3:3}:
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
down_read+0x45/0x2e0 kernel/locking/rwsem.c:1488
mmap_read_lock+0x1c/0x50 include/linux/mmap_lock.h:117
do_user_addr_fault arch/x86/mm/fault.c:1348 [inline]
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0x5ce/0x740 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
user_access_begin arch/x86/include/asm/uaccess.h:574 [inline]
filldir+0x32b/0x720 fs/readdir.c:249
dir_emit_dot include/linux/fs.h:3605 [inline]
dir_emit_dots include/linux/fs.h:3616 [inline]
exfat_iterate+0x2ef/0x3290 fs/exfat/dir.c:232
iterate_dir+0x224/0x570
__do_sys_getdents fs/readdir.c:286 [inline]
__se_sys_getdents+0x1e8/0x4c0 fs/readdir.c:271
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
-> #1 (&sbi->s_lock#2){+.+.}-{3:3}:
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
__mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
exfat_get_block+0x1ca/0x22c0 fs/exfat/inode.c:303
do_mpage_readpage+0x6c8/0x1f70 fs/mpage.c:231
mpage_readahead+0x427/0x9b0 fs/mpage.c:389
read_pages+0x159/0x8e0 mm/readahead.c:130
page_cache_ra_unbounded+0x7b0/0x930 mm/readahead.c:239
page_cache_sync_readahead include/linux/pagemap.h:833 [inline]
filemap_get_pages mm/filemap.c:2551 [inline]
filemap_read+0x71c/0x2980 mm/filemap.c:2634
__kernel_read+0x5ac/0xa60 fs/read_write.c:443
integrity_kernel_read+0xac/0xf0 security/integrity/iint.c:199
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0xa5d/0x1c00 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x293/0x530 security/integrity/ima/ima_api.c:254
process_measurement+0x1038/0x1d60 security/integrity/ima/ima_main.c:337
ima_file_check+0xf3/0x180 security/integrity/ima/ima_main.c:519
do_open fs/namei.c:3540 [inline]
path_openat+0x2745/0x2f20 fs/namei.c:3672
do_filp_open+0x21c/0x460 fs/namei.c:3699
do_sys_openat2+0x13b/0x500 fs/open.c:1211
do_sys_open fs/open.c:1227 [inline]
__do_sys_openat fs/open.c:1243 [inline]
__se_sys_openat fs/open.c:1238 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1238
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
-> #0 (mapping.invalidate_lock#9){.+.+}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain+0x1646/0x58b0 kernel/locking/lockdep.c:3787
__lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5011
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
down_read+0x45/0x2e0 kernel/locking/rwsem.c:1488
filemap_invalidate_lock_shared include/linux/fs.h:842 [inline]
filemap_fault+0x708/0x1470 mm/filemap.c:3072
__do_fault+0x139/0x340 mm/memory.c:3885
do_read_fault mm/memory.c:4221 [inline]
do_fault mm/memory.c:4349 [inline]
handle_pte_fault mm/memory.c:4608 [inline]
__handle_mm_fault mm/memory.c:4743 [inline]
handle_mm_fault+0x376f/0x5950 mm/memory.c:4841
do_user_addr_fault arch/x86/mm/fault.c:1397 [inline]
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0x271/0x740 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
strncpy_from_user+0x170/0x370 lib/strncpy_from_user.c:139
getname_flags+0xf5/0x4e0 fs/namei.c:149
do_sys_openat2+0xd2/0x500 fs/open.c:1205
do_sys_open fs/open.c:1227 [inline]
__do_sys_openat fs/open.c:1243 [inline]
__se_sys_openat fs/open.c:1238 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1238
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
other info that might help us debug this:
Chain exists of:
mapping.invalidate_lock#9 --> &sbi->s_lock#2 --> &mm->mmap_lock#2
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&mm->mmap_lock#2);
lock(&sbi->s_lock#2);
lock(&mm->mmap_lock#2);
lock(mapping.invalidate_lock#9);
*** DEADLOCK ***
1 lock held by syz-executor.1/25444:
#0: ffff8880952a1628 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff8880952a1628 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
#0: ffff8880952a1628 (&mm->mmap_lock#2){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1485 [inline]
#0: ffff8880952a1628 (&mm->mmap_lock#2){++++}-{3:3}, at: exc_page_fault+0x181/0x740 arch/x86/mm/fault.c:1541
stack backtrace:
CPU: 0 PID: 25444 Comm: syz-executor.1 Not tainted 5.15.117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain+0x1646/0x58b0 kernel/locking/lockdep.c:3787
__lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5011
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
down_read+0x45/0x2e0 kernel/locking/rwsem.c:1488
filemap_invalidate_lock_shared include/linux/fs.h:842 [inline]
filemap_fault+0x708/0x1470 mm/filemap.c:3072
__do_fault+0x139/0x340 mm/memory.c:3885
do_read_fault mm/memory.c:4221 [inline]
do_fault mm/memory.c:4349 [inline]
handle_pte_fault mm/memory.c:4608 [inline]
__handle_mm_fault mm/memory.c:4743 [inline]
handle_mm_fault+0x376f/0x5950 mm/memory.c:4841
do_user_addr_fault arch/x86/mm/fault.c:1397 [inline]
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0x271/0x740 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:41 [inline]
RIP: 0010:strncpy_from_user+0x170/0x370 lib/strncpy_from_user.c:139
Code: 4c 89 ee e8 42 96 58 fd 49 83 fd 07 0f 86 a2 00 00 00 4c 89 7c 24 08 48 c7 44 24 10 f8 ff ff ff 45 31 e4 4c 89 f5 48 8b 04 24 <4e> 8b 3c 20 48 b8 ff fe fe fe fe fe fe fe 49 8d 1c 07 4d 89 fe 49
RSP: 0018:ffffc90008767c98 EFLAGS: 00050246
RAX: 0000000020000000 RBX: 00007ffffffff000 RCX: ffff88807779d940
RDX: ffffc90005b51000 RSI: 0000000000000fe0 RDI: 0000000000000007
RBP: ffff88809e51b320 R08: ffffffff842766ee R09: 0000000000001000
R10: ffff888011dc6500 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000fe0 R14: ffff88809e51b320 R15: 0000000000000fe0
getname_flags+0xf5/0x4e0 fs/namei.c:149
do_sys_openat2+0xd2/0x500 fs/open.c:1205
do_sys_open fs/open.c:1227 [inline]
__do_sys_openat fs/open.c:1243 [inline]
__se_sys_openat fs/open.c:1238 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1238
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fe8fe9c3389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007fe8fcf35168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe8feae2f80 RCX: 00007fe8fe9c3389
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007fe8fea0e493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1b03876f R14: 00007fe8fcf35300 R15: 0000000000022000
</TASK>
----------------
Code disassembly (best guess):
0: 4c 89 ee mov %r13,%rsi
3: e8 42 96 58 fd callq 0xfd58964a
8: 49 83 fd 07 cmp $0x7,%r13
c: 0f 86 a2 00 00 00 jbe 0xb4
12: 4c 89 7c 24 08 mov %r15,0x8(%rsp)
17: 48 c7 44 24 10 f8 ff movq $0xfffffffffffffff8,0x10(%rsp)
1e: ff ff
20: 45 31 e4 xor %r12d,%r12d
23: 4c 89 f5 mov %r14,%rbp
26: 48 8b 04 24 mov (%rsp),%rax
* 2a: 4e 8b 3c 20 mov (%rax,%r12,1),%r15 <-- trapping instruction
2e: 48 b8 ff fe fe fe fe movabs $0xfefefefefefefeff,%rax
35: fe fe fe
38: 49 8d 1c 07 lea (%r15,%rax,1),%rbx
3c: 4d 89 fe mov %r15,%r14
3f: 49 rex.WB