------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.7.0-rc2-next-20231124-syzkaller #0 Not tainted
------------------------------------------------------
modprobe/1730 is trying to acquire lock:
ffffffff8cf9a9b8 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0x12/0x70 kernel/locking/semaphore.c:139
but task is already holding lock:
ffffffff8da73f98 (pool_rwlock){----}-{2:2}, at: stack_depot_put lib/stackdepot.c:621 [inline]
ffffffff8da73f98 (pool_rwlock){----}-{2:2}, at: stack_depot_put+0x24/0x110 lib/stackdepot.c:613
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (pool_rwlock){----}-{2:2}:
__raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
_raw_read_lock_irqsave+0x46/0x90 kernel/locking/spinlock.c:236
stack_depot_save_flags+0x169/0x740 lib/stackdepot.c:508
kasan_save_stack+0x42/0x50 mm/kasan/common.c:47
__kasan_record_aux_stack+0xc2/0xd0 mm/kasan/generic.c:508
task_work_add+0x88/0x2a0 kernel/task_work.c:48
task_tick_numa kernel/sched/fair.c:3512 [inline]
task_tick_fair+0x5a5/0xc30 kernel/sched/fair.c:12599
scheduler_tick+0x210/0x650 kernel/sched/core.c:5674
update_process_times+0x19e/0x220 kernel/time/timer.c:2076
tick_sched_handle+0x8e/0x170 kernel/time/tick-sched.c:255
tick_nohz_highres_handler+0xe9/0x110 kernel/time/tick-sched.c:1516
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x654/0xc20 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x10c/0x410 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
unwind_next_frame+0x622/0x2390 arch/x86/kernel/unwind_orc.c:512
__unwind_start+0x5a2/0x880 arch/x86/kernel/unwind_orc.c:760
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xaf/0x170 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x15e/0x1f0 mm/page_owner.c:130
__set_page_owner+0x1f/0x60 mm/page_owner.c:196
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1533
prep_new_page mm/page_alloc.c:1540 [inline]
get_page_from_freelist+0xa16/0x3690 mm/page_alloc.c:3344
__alloc_pages+0x22d/0x2400 mm/page_alloc.c:4600
alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
folio_alloc+0x1e/0xe0 mm/mempolicy.c:2211
filemap_alloc_folio+0x3b6/0x490 mm/filemap.c:974
page_cache_ra_unbounded+0x1aa/0x5e0 mm/readahead.c:247
do_page_cache_ra mm/readahead.c:299 [inline]
page_cache_ra_order+0x72b/0xa80 mm/readahead.c:546
ondemand_readahead+0x493/0x1130 mm/readahead.c:668
page_cache_async_ra mm/readahead.c:717 [inline]
page_cache_async_ra+0x123/0x150 mm/readahead.c:699
filemap_readahead mm/filemap.c:2472 [inline]
filemap_get_pages+0x359/0x1830 mm/filemap.c:2513
filemap_read+0x39b/0xcf0 mm/filemap.c:2593
generic_file_read_iter+0x346/0x450 mm/filemap.c:2772
ext4_file_read_iter+0x1dc/0x6c0 fs/ext4/file.c:147
__kernel_read+0x300/0x870 fs/read_write.c:428
integrity_kernel_read+0x7f/0xb0 security/integrity/iint.c:221
ima_calc_file_hash_tfm+0x2c5/0x3d0 security/integrity/ima/ima_crypto.c:485
ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
ima_calc_file_hash+0x1c6/0x4a0 security/integrity/ima/ima_crypto.c:573
ima_collect_measurement+0x85e/0xa20 security/integrity/ima/ima_api.c:290
process_measurement+0xe92/0x2260 security/integrity/ima/ima_main.c:359
ima_file_check+0xc1/0x100 security/integrity/ima/ima_main.c:557
do_open fs/namei.c:3636 [inline]
path_openat+0x181d/0x2c50 fs/namei.c:3791
do_filp_open+0x1dc/0x430 fs/namei.c:3821
do_sys_openat2+0x176/0x1e0 fs/open.c:1441
do_sys_open fs/open.c:1456 [inline]
__do_sys_openat fs/open.c:1472 [inline]
__se_sys_openat fs/open.c:1467 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1467
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x62/0x6a
-> #2 (&rq->__lock){-.-.}-{2:2}:
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558
raw_spin_rq_lock kernel/sched/sched.h:1374 [inline]
rq_lock kernel/sched/sched.h:1688 [inline]
task_fork_fair+0x70/0x240 kernel/sched/fair.c:12619
sched_cgroup_fork+0x3cf/0x510 kernel/sched/core.c:4835
copy_process+0x6a38/0x9770 kernel/fork.c:2601
kernel_clone+0xfd/0x940 kernel/fork.c:2899
user_mode_thread+0xb4/0xf0 kernel/fork.c:2977
rest_init+0x27/0x2b0 init/main.c:695
arch_call_rest_init+0x13/0x30 init/main.c:827
start_kernel+0x39e/0x480 init/main.c:1072
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:555
x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:536
secondary_startup_64_no_verify+0x166/0x16b
-> #1 (&p->pi_lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:522 [inline]
try_to_wake_up+0x9a/0x13d0 kernel/sched/core.c:4252
up+0x79/0xb0 kernel/locking/semaphore.c:191
__up_console_sem kernel/printk/printk.c:340 [inline]
__console_unlock kernel/printk/printk.c:2706 [inline]
console_unlock+0x1cf/0x260 kernel/printk/printk.c:3038
con_install+0x161/0x600 drivers/tty/vt/vt.c:3367
tty_driver_install_tty drivers/tty/tty_io.c:1306 [inline]
tty_init_dev.part.0+0x99/0x660 drivers/tty/tty_io.c:1418
tty_init_dev include/linux/err.h:61 [inline]
tty_open_by_driver drivers/tty/tty_io.c:2084 [inline]
tty_open+0xb21/0x1010 drivers/tty/tty_io.c:2131
chrdev_open+0x26d/0x6e0 fs/char_dev.c:414
do_dentry_open+0x8d6/0x18c0 fs/open.c:949
do_open fs/namei.c:3634 [inline]
path_openat+0x1e55/0x2c50 fs/namei.c:3791
do_filp_open+0x1dc/0x430 fs/namei.c:3821
do_sys_openat2+0x176/0x1e0 fs/open.c:1441
do_sys_open fs/open.c:1456 [inline]
__do_sys_openat fs/open.c:1472 [inline]
__se_sys_openat fs/open.c:1467 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1467
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x62/0x6a
-> #0 ((console_sem).lock){-.-.}-{2:2}:
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3868 [inline]
__lock_acquire+0x2466/0x3b10 kernel/locking/lockdep.c:5136
lock_acquire kernel/locking/lockdep.c:5753 [inline]
lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5718
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
down_trylock+0x12/0x70 kernel/locking/semaphore.c:139
__down_trylock_console_sem+0x40/0x140 kernel/printk/printk.c:323
console_trylock+0x73/0x130 kernel/printk/printk.c:2659
console_trylock_spinning kernel/printk/printk.c:1923 [inline]
vprintk_emit+0x162/0x5f0 kernel/printk/printk.c:2302
vprintk+0x7b/0x90 kernel/printk/printk_safe.c:45
_printk+0xc8/0x100 kernel/printk/printk.c:2328
__warn_printk+0x158/0x350 kernel/panic.c:721
refcount_warn_saturate+0x149/0x210 lib/refcount.c:28
__refcount_sub_and_test include/linux/refcount.h:283 [inline]
__refcount_dec_and_test include/linux/refcount.h:315 [inline]
refcount_dec_and_test include/linux/refcount.h:333 [inline]
stack_depot_put lib/stackdepot.c:627 [inline]
stack_depot_put+0xe4/0x110 lib/stackdepot.c:613
qlink_free mm/kasan/quarantine.c:151 [inline]
qlist_free_all+0x5e/0x1e0 mm/kasan/quarantine.c:201
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:308
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:307
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:763 [inline]
slab_alloc_node mm/slub.c:3452 [inline]
__kmem_cache_alloc_node+0x195/0x310 mm/slub.c:3491
__do_kmalloc_node mm/slab_common.c:1006 [inline]
__kmalloc+0x49/0x90 mm/slab_common.c:1020
kmalloc include/linux/slab.h:604 [inline]
tomoyo_realpath_from_path+0xb9/0x710 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x26f/0x450 security/tomoyo/file.c:822
security_inode_getattr+0xf1/0x150 security/security.c:2237
vfs_getattr fs/stat.c:173 [inline]
vfs_fstat+0x4f/0xc0 fs/stat.c:198
vfs_fstatat+0x130/0x140 fs/stat.c:300
__do_sys_newfstatat+0x98/0x110 fs/stat.c:468
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x62/0x6a
other info that might help us debug this:
Chain exists of:
(console_sem).lock --> &rq->__lock --> pool_rwlock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(pool_rwlock);
lock(&rq->__lock);
lock(pool_rwlock);
lock((console_sem).lock);
*** DEADLOCK ***
3 locks held by modprobe/1730:
#0: ffffffff8d8ff670 (tomoyo_ss){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline]
#0: ffffffff8d8ff670 (tomoyo_ss){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline]
#0: ffffffff8d8ff670 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_read_lock security/tomoyo/common.h:1108 [inline]
#0: ffffffff8d8ff670 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_perm+0x25b/0x450 security/tomoyo/file.c:821
#1: ffffffff8d1463f0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline]
#1: ffffffff8d1463f0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline]
#1: ffffffff8d1463f0 (remove_cache_srcu){.+.+}-{0:0}, at: kasan_quarantine_reduce+0x81/0x1d0 mm/kasan/quarantine.c:281
#2: ffffffff8da73f98 (pool_rwlock){----}-{2:2}, at: stack_depot_put lib/stackdepot.c:621 [inline]
#2: ffffffff8da73f98 (pool_rwlock){----}-{2:2}, at: stack_depot_put+0x24/0x110 lib/stackdepot.c:613
stack backtrace:
CPU: 0 PID: 1730 Comm: modprobe Not tainted 6.7.0-rc2-next-20231124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
check_noncircular+0x316/0x400 kernel/locking/lockdep.c:2187
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3868 [inline]
__lock_acquire+0x2466/0x3b10 kernel/locking/lockdep.c:5136
lock_acquire kernel/locking/lockdep.c:5753 [inline]
lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5718
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
down_trylock+0x12/0x70 kernel/locking/semaphore.c:139
__down_trylock_console_sem+0x40/0x140 kernel/printk/printk.c:323
console_trylock+0x73/0x130 kernel/printk/printk.c:2659
console_trylock_spinning kernel/printk/printk.c:1923 [inline]
vprintk_emit+0x162/0x5f0 kernel/printk/printk.c:2302
vprintk+0x7b/0x90 kernel/printk/printk_safe.c:45
_printk+0xc8/0x100 kernel/printk/printk.c:2328
__warn_printk+0x158/0x350 kernel/panic.c:721
refcount_warn_saturate+0x149/0x210 lib/refcount.c:28
__refcount_sub_and_test include/linux/refcount.h:283 [inline]
__refcount_dec_and_test include/linux/refcount.h:315 [inline]
refcount_dec_and_test include/linux/refcount.h:333 [inline]
stack_depot_put lib/stackdepot.c:627 [inline]
stack_depot_put+0xe4/0x110 lib/stackdepot.c:613
qlink_free mm/kasan/quarantine.c:151 [inline]
qlist_free_all+0x5e/0x1e0 mm/kasan/quarantine.c:201
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:308
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:307
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:763 [inline]
slab_alloc_node mm/slub.c:3452 [inline]
__kmem_cache_alloc_node+0x195/0x310 mm/slub.c:3491
__do_kmalloc_node mm/slab_common.c:1006 [inline]
__kmalloc+0x49/0x90 mm/slab_common.c:1020
kmalloc include/linux/slab.h:604 [inline]
tomoyo_realpath_from_path+0xb9/0x710 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x26f/0x450 security/tomoyo/file.c:822
security_inode_getattr+0xf1/0x150 security/security.c:2237
vfs_getattr fs/stat.c:173 [inline]
vfs_fstat+0x4f/0xc0 fs/stat.c:198
vfs_fstatat+0x130/0x140 fs/stat.c:300
__do_sys_newfstatat+0x98/0x110 fs/stat.c:468
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f9483f838a9
Code: 49 01 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 0c f7 d8 41 83 c8 ff 89 05 a1 49 01 00
RSP: 002b:00007fff90e0e1c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9483f838a9
RDX: 00007fff90e0e270 RSI: 00007f9483f8e3d4 RDI: 0000000000000000
RBP: 00007fff90e0e330 R08: 00007f9483f660a0 R09: 00007f9483f982a0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007f9483f982a0
R13: 00007fff90e0e3b8 R14: 00007f9483f982a0 R15: 0000000000000001
refcount_t: underflow; use-after-free.
WARNING: CPU: 0 PID: 1730 at lib/refcount.c:28 refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Modules linked in:
CPU: 0 PID: 1730 Comm: modprobe Not tainted 6.7.0-rc2-next-20231124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Code: ff 89 de e8 78 4b 24 fd 84 db 0f 85 66 ff ff ff e8 3b 50 24 fd c6 05 7e 9b 9f 0a 01 90 48 c7 c7 e0 c1 2e 8b e8 57 42 ea fc 90 <0f> 0b 90 90 e9 43 ff ff ff e8 18 50 24 fd 0f b6 1d 59 9b 9f 0a 31
RSP: 0018:ffffc900150e7950 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff814e05d9
RDX: ffff888037d41dc0 RSI: ffffffff814e05e6 RDI: 0000000000000001
RBP: ffff888064a98abc R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000206b00 R12: ffff88803542b580
R13: ffff888019b923c0 R14: 0000000000000000 R15: ffff88803542b300
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9705469940 CR3: 00000000894d0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__refcount_sub_and_test include/linux/refcount.h:283 [inline]
__refcount_dec_and_test include/linux/refcount.h:315 [inline]
refcount_dec_and_test include/linux/refcount.h:333 [inline]
stack_depot_put lib/stackdepot.c:627 [inline]
stack_depot_put+0xe4/0x110 lib/stackdepot.c:613
qlink_free mm/kasan/quarantine.c:151 [inline]
qlist_free_all+0x5e/0x1e0 mm/kasan/quarantine.c:201
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:308
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:307
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:763 [inline]
slab_alloc_node mm/slub.c:3452 [inline]
__kmem_cache_alloc_node+0x195/0x310 mm/slub.c:3491
__do_kmalloc_node mm/slab_common.c:1006 [inline]
__kmalloc+0x49/0x90 mm/slab_common.c:1020
kmalloc include/linux/slab.h:604 [inline]
tomoyo_realpath_from_path+0xb9/0x710 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x26f/0x450 security/tomoyo/file.c:822
security_inode_getattr+0xf1/0x150 security/security.c:2237
vfs_getattr fs/stat.c:173 [inline]
vfs_fstat+0x4f/0xc0 fs/stat.c:198
vfs_fstatat+0x130/0x140 fs/stat.c:300
__do_sys_newfstatat+0x98/0x110 fs/stat.c:468
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f9483f838a9
Code: 49 01 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 0c f7 d8 41 83 c8 ff 89 05 a1 49 01 00
RSP: 002b:00007fff90e0e1c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9483f838a9
RDX: 00007fff90e0e270 RSI: 00007f9483f8e3d4 RDI: 0000000000000000
RBP: 00007fff90e0e330 R08: 00007f9483f660a0 R09: 00007f9483f982a0
R10: 0000000000001000 R11: 0000000000000246 R12: 00007f9483f982a0
R13: 00007fff90e0e3b8 R14: 00007f9483f982a0 R15: 0000000000000001