------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.7.0-rc3-next-20231201-syzkaller #0 Not tainted
------------------------------------------------------
jbd2/sda1-8/4477 is trying to acquire lock:
ffffffff8d19b138 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0x12/0x70 kernel/locking/semaphore.c:139

but task is already holding lock:
ffffffff8dc76ab8 (pool_rwlock){----}-{2:2}, at: stack_depot_put lib/stackdepot.c:621 [inline]
ffffffff8dc76ab8 (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:48
       __kasan_record_aux_stack+0xc2/0xd0 mm/kasan/generic.c:517
       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
       __raw_read_unlock_irqrestore include/linux/rwlock_api_smp.h:241 [inline]
       _raw_read_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:268
       stack_depot_save_flags+0x2a1/0x740 lib/stackdepot.c:523
       kasan_save_stack+0x42/0x50 mm/kasan/common.c:48
       __kasan_record_aux_stack+0xc2/0xd0 mm/kasan/generic.c:517
       __call_rcu_common.constprop.0+0x9a/0x7a0 kernel/rcu/tree.c:2681
       mas_free lib/maple_tree.c:1304 [inline]
       mas_replace_node lib/maple_tree.c:1738 [inline]
       mas_wr_node_store+0xd76/0x1740 lib/maple_tree.c:3956
       mas_wr_modify lib/maple_tree.c:4189 [inline]
       mas_wr_store_entry.isra.0+0x666/0x1610 lib/maple_tree.c:4229
       mas_store_prealloc+0xb6/0x2a0 lib/maple_tree.c:5427
       vma_complete+0x8ff/0xdf0 mm/mmap.c:532
       __split_vma+0xd66/0x1190 mm/mmap.c:2376
       do_vmi_align_munmap+0x2c2/0x1ad0 mm/mmap.c:2531
       do_vmi_munmap+0x20b/0x440 mm/mmap.c:2690
       __vm_munmap+0x145/0x390 mm/mmap.c:2977
       elf_map fs/binfmt_elf.c:383 [inline]
       elf_load+0x4ce/0x870 fs/binfmt_elf.c:408
       load_elf_binary+0xc5d/0x4e10 fs/binfmt_elf.c:1132
       search_binary_handler fs/exec.c:1736 [inline]
       exec_binprm fs/exec.c:1778 [inline]
       bprm_execve fs/exec.c:1853 [inline]
       bprm_execve+0x7ef/0x1a80 fs/exec.c:1809
       kernel_execve+0x3d7/0x4e0 fs/exec.c:2021
       try_to_run_init_process init/main.c:1364 [inline]
       kernel_init+0x137/0x2a0 init/main.c:1497
       ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

-> #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:1385 [inline]
       rq_lock kernel/sched/sched.h:1699 [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
       vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2303
       vprintk+0x7b/0x90 kernel/printk/printk_safe.c:45
       _printk+0xc8/0x100 kernel/printk/printk.c:2328
       fib6_add+0x7c5/0x4710 net/ipv6/ip6_fib.c:1396
       __ip6_ins_rt net/ipv6/route.c:1303 [inline]
       ip6_route_add+0x8d/0x150 net/ipv6/route.c:3847
       inet6_rtm_newroute+0x160/0x170 net/ipv6/route.c:5510
       rtnetlink_rcv_msg+0x3c7/0xe00 net/core/rtnetlink.c:6558
       netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2544
       netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
       netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367
       netlink_sendmsg+0x8b4/0xd70 net/netlink/af_netlink.c:1909
       sock_sendmsg_nosec net/socket.c:730 [inline]
       __sock_sendmsg+0xd5/0x180 net/socket.c:745
       ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584
       ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
       __sys_sendmsg+0x117/0x1e0 net/socket.c:2667
       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:3869 [inline]
       __lock_acquire+0x246e/0x3b30 kernel/locking/lockdep.c:5137
       lock_acquire kernel/locking/lockdep.c:5754 [inline]
       lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5719
       __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
       __kasan_record_aux_stack+0xb3/0xd0 mm/kasan/generic.c:515
       insert_work+0x38/0x230 kernel/workqueue.c:1653
       __queue_work+0x633/0x11d0 kernel/workqueue.c:1802
       __queue_delayed_work+0x1bf/0x270 kernel/workqueue.c:1953
       mod_delayed_work_on+0xcc/0x1a0 kernel/workqueue.c:2027
       kblockd_mod_delayed_work_on+0x29/0x40 block/blk-core.c:1038
       blk_kick_flush block/blk-flush.c:348 [inline]
       blk_flush_complete_seq+0xa66/0x10c0 block/blk-flush.c:213
       blk_insert_flush+0x349/0x6d0 block/blk-flush.c:456
       blk_mq_submit_bio+0x16cd/0x2150 block/blk-mq.c:2992
       __submit_bio+0xfd/0x310 block/blk-core.c:599
       __submit_bio_noacct_mq block/blk-core.c:678 [inline]
       submit_bio_noacct_nocheck+0x852/0xbb0 block/blk-core.c:707
       submit_bio_noacct+0x87b/0x1b90 block/blk-core.c:801
       journal_submit_commit_record+0x73b/0xab0 fs/jbd2/commit.c:156
       jbd2_journal_commit_transaction+0x39fd/0x63c0 fs/jbd2/commit.c:880
       kjournald2+0x1f8/0x8f0 fs/jbd2/journal.c:201
       kthread+0x2c1/0x3a0 kernel/kthread.c:389
       ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

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 ***

4 locks held by jbd2/sda1-8/4477:
 #0: ffff88801df78618 (&fq->mq_flush_lock){..-.}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
 #0: ffff88801df78618 (&fq->mq_flush_lock){..-.}-{2:2}, at: blk_insert_flush+0x337/0x6d0 block/blk-flush.c:455
 #1: ffffffff8d1ad6e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
 #1: ffffffff8d1ad6e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
 #1: ffffffff8d1ad6e0 (rcu_read_lock){....}-{1:2}, at: __queue_work+0xf2/0x11d0 kernel/workqueue.c:1730
 #2: ffff8880b983c2f8 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x38e/0x11d0 kernel/workqueue.c:1763
 #3: ffffffff8dc76ab8 (pool_rwlock){----}-{2:2}, at: stack_depot_put lib/stackdepot.c:621 [inline]
 #3: ffffffff8dc76ab8 (pool_rwlock){----}-{2:2}, at: stack_depot_put+0x24/0x110 lib/stackdepot.c:613

stack backtrace:
CPU: 0 PID: 4477 Comm: jbd2/sda1-8 Not tainted 6.7.0-rc3-next-20231201-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
 <TASK>
 __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:3869 [inline]
 __lock_acquire+0x246e/0x3b30 kernel/locking/lockdep.c:5137
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5719
 __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
 __kasan_record_aux_stack+0xb3/0xd0 mm/kasan/generic.c:515
 insert_work+0x38/0x230 kernel/workqueue.c:1653
 __queue_work+0x633/0x11d0 kernel/workqueue.c:1802
 __queue_delayed_work+0x1bf/0x270 kernel/workqueue.c:1953
 mod_delayed_work_on+0xcc/0x1a0 kernel/workqueue.c:2027
 kblockd_mod_delayed_work_on+0x29/0x40 block/blk-core.c:1038
 blk_kick_flush block/blk-flush.c:348 [inline]
 blk_flush_complete_seq+0xa66/0x10c0 block/blk-flush.c:213
 blk_insert_flush+0x349/0x6d0 block/blk-flush.c:456
 blk_mq_submit_bio+0x16cd/0x2150 block/blk-mq.c:2992
 __submit_bio+0xfd/0x310 block/blk-core.c:599
 __submit_bio_noacct_mq block/blk-core.c:678 [inline]
 submit_bio_noacct_nocheck+0x852/0xbb0 block/blk-core.c:707
 submit_bio_noacct+0x87b/0x1b90 block/blk-core.c:801
 journal_submit_commit_record+0x73b/0xab0 fs/jbd2/commit.c:156
 jbd2_journal_commit_transaction+0x39fd/0x63c0 fs/jbd2/commit.c:880
 kjournald2+0x1f8/0x8f0 fs/jbd2/journal.c:201
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
refcount_t: underflow; use-after-free.
WARNING: CPU: 0 PID: 4477 at lib/refcount.c:28 refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Modules linked in:
CPU: 0 PID: 4477 Comm: jbd2/sda1-8 Not tainted 6.7.0-rc3-next-20231201-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 c8 60 23 fd 84 db 0f 85 66 ff ff ff e8 8b 65 23 fd c6 05 31 e6 be 0a 01 90 48 c7 c7 20 b9 2e 8b e8 e7 53 e9 fc 90 <0f> 0b 90 90 e9 43 ff ff ff e8 68 65 23 fd 0f b6 1d 0c e6 be 0a 31
RSP: 0018:ffffc9000ea6f300 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff814e15d9
RDX: ffff88802b569dc0 RSI: ffffffff814e15e6 RDI: 0000000000000001
RBP: ffff88807d8e0cdc R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000034478 R12: ffff8881432a53c0
R13: ffff888016ad5c00 R14: ffff888016ad5c5c R15: ffff8880b983c340
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc68bbb6d58 CR3: 00000000213ee000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __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
 __kasan_record_aux_stack+0xb3/0xd0 mm/kasan/generic.c:515
 insert_work+0x38/0x230 kernel/workqueue.c:1653
 __queue_work+0x633/0x11d0 kernel/workqueue.c:1802
 __queue_delayed_work+0x1bf/0x270 kernel/workqueue.c:1953
 mod_delayed_work_on+0xcc/0x1a0 kernel/workqueue.c:2027
 kblockd_mod_delayed_work_on+0x29/0x40 block/blk-core.c:1038
 blk_kick_flush block/blk-flush.c:348 [inline]
 blk_flush_complete_seq+0xa66/0x10c0 block/blk-flush.c:213
 blk_insert_flush+0x349/0x6d0 block/blk-flush.c:456
 blk_mq_submit_bio+0x16cd/0x2150 block/blk-mq.c:2992
 __submit_bio+0xfd/0x310 block/blk-core.c:599
 __submit_bio_noacct_mq block/blk-core.c:678 [inline]
 submit_bio_noacct_nocheck+0x852/0xbb0 block/blk-core.c:707
 submit_bio_noacct+0x87b/0x1b90 block/blk-core.c:801
 journal_submit_commit_record+0x73b/0xab0 fs/jbd2/commit.c:156
 jbd2_journal_commit_transaction+0x39fd/0x63c0 fs/jbd2/commit.c:880
 kjournald2+0x1f8/0x8f0 fs/jbd2/journal.c:201
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>