======================================================
WARNING: possible circular locking dependency detected
5.15.106-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.5/8052 is trying to acquire lock:
ffff0001258db850 (mapping.invalidate_lock#8){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:842 [inline]
ffff0001258db850 (mapping.invalidate_lock#8){.+.+}-{3:3}, at: filemap_fault+0x52c/0xf5c mm/filemap.c:3072
but task is already holding lock:
ffff0000d14e9dd8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
ffff0000d14e9dd8 (&mm->mmap_lock){++++}-{3:3}, at: __mm_populate+0x19c/0x41c mm/gup.c:1618
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&mm->mmap_lock){++++}-{3:3}:
__might_fault+0xc8/0x128 mm/memory.c:5297
filldir64+0x2bc/0x9e4 fs/readdir.c:335
dir_emit_dot include/linux/fs.h:3605 [inline]
dir_emit_dots include/linux/fs.h:3616 [inline]
exfat_iterate+0x25c/0x27a0 fs/exfat/dir.c:232
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
-> #1 (&sbi->s_lock#2){+.+.}-{3:3}:
__mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743
exfat_get_block+0x16c/0x1b40 fs/exfat/inode.c:303
do_mpage_readpage+0x6f8/0x1c68 fs/mpage.c:231
mpage_readahead+0x35c/0x844 fs/mpage.c:389
exfat_readahead+0x28/0x38 fs/exfat/inode.c:366
read_pages+0x13c/0x420 mm/readahead.c:130
page_cache_ra_unbounded+0x534/0x654 mm/readahead.c:239
do_page_cache_ra mm/readahead.c:269 [inline]
ondemand_readahead+0x62c/0xd0c mm/readahead.c:552
page_cache_sync_ra+0x130/0x180 mm/readahead.c:580
page_cache_sync_readahead include/linux/pagemap.h:833 [inline]
filemap_get_pages mm/filemap.c:2551 [inline]
filemap_read+0x52c/0x1bd4 mm/filemap.c:2634
generic_file_read_iter+0xa0/0x3c4 mm/filemap.c:2785
__kernel_read+0x488/0x8b0 fs/read_write.c:443
kernel_read+0xd8/0x1d4 fs/read_write.c:461
prepare_binprm fs/exec.c:1664 [inline]
search_binary_handler fs/exec.c:1718 [inline]
exec_binprm fs/exec.c:1775 [inline]
bprm_execve+0x740/0x1578 fs/exec.c:1844
do_execveat_common+0x668/0x814 fs/exec.c:1949
do_execveat fs/exec.c:2030 [inline]
__do_sys_execveat fs/exec.c:2104 [inline]
__se_sys_execveat fs/exec.c:2098 [inline]
__arm64_sys_execveat+0xd0/0xec fs/exec.c:2098
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
-> #0 (mapping.invalidate_lock#8){.+.+}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3787 [inline]
__lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011
lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
down_read+0xbc/0x11c kernel/locking/rwsem.c:1488
filemap_invalidate_lock_shared include/linux/fs.h:842 [inline]
filemap_fault+0x52c/0xf5c mm/filemap.c:3072
__do_fault+0x120/0x5d0 mm/memory.c:3871
do_read_fault mm/memory.c:4207 [inline]
do_fault mm/memory.c:4335 [inline]
handle_pte_fault mm/memory.c:4594 [inline]
__handle_mm_fault mm/memory.c:4729 [inline]
handle_mm_fault+0x21ec/0x33c4 mm/memory.c:4827
faultin_page mm/gup.c:976 [inline]
__get_user_pages+0x39c/0x92c mm/gup.c:1197
populate_vma_page_range+0x200/0x290 mm/gup.c:1529
__mm_populate+0x278/0x41c mm/gup.c:1638
mm_populate include/linux/mm.h:2632 [inline]
vm_mmap_pgoff+0x1fc/0x2b4 mm/util.c:556
ksys_mmap_pgoff+0x458/0x668 mm/mmap.c:1624
__do_sys_mmap arch/arm64/kernel/sys.c:28 [inline]
__se_sys_mmap arch/arm64/kernel/sys.c:21 [inline]
__arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
other info that might help us debug this:
Chain exists of:
mapping.invalidate_lock#8 --> &sbi->s_lock#2 --> &mm->mmap_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&mm->mmap_lock);
lock(&sbi->s_lock#2);
lock(&mm->mmap_lock);
lock(mapping.invalidate_lock#8);
*** DEADLOCK ***
1 lock held by syz-executor.5/8052:
#0: ffff0000d14e9dd8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff0000d14e9dd8 (&mm->mmap_lock){++++}-{3:3}, at: __mm_populate+0x19c/0x41c mm/gup.c:1618
stack backtrace:
CPU: 0 PID: 8052 Comm: syz-executor.5 Not tainted 5.15.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call trace:
dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
dump_stack+0x1c/0x58 lib/dump_stack.c:113
print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2011
check_noncircular+0x2cc/0x378 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 kernel/locking/lockdep.c:3787 [inline]
__lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011
lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
down_read+0xbc/0x11c kernel/locking/rwsem.c:1488
filemap_invalidate_lock_shared include/linux/fs.h:842 [inline]
filemap_fault+0x52c/0xf5c mm/filemap.c:3072
__do_fault+0x120/0x5d0 mm/memory.c:3871
do_read_fault mm/memory.c:4207 [inline]
do_fault mm/memory.c:4335 [inline]
handle_pte_fault mm/memory.c:4594 [inline]
__handle_mm_fault mm/memory.c:4729 [inline]
handle_mm_fault+0x21ec/0x33c4 mm/memory.c:4827
faultin_page mm/gup.c:976 [inline]
__get_user_pages+0x39c/0x92c mm/gup.c:1197
populate_vma_page_range+0x200/0x290 mm/gup.c:1529
__mm_populate+0x278/0x41c mm/gup.c:1638
mm_populate include/linux/mm.h:2632 [inline]
vm_mmap_pgoff+0x1fc/0x2b4 mm/util.c:556
ksys_mmap_pgoff+0x458/0x668 mm/mmap.c:1624
__do_sys_mmap arch/arm64/kernel/sys.c:28 [inline]
__se_sys_mmap arch/arm64/kernel/sys.c:21 [inline]
__arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584