loop0: detected capacity change from 0 to 4096
ntfs3: loop0: Different NTFS sector size (4096) and media sector size (512).
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.5.0-rc3-syzkaller-g18b44bc5a672 #0 Not tainted
------------------------------------------------------
syz-executor.0/5968 is trying to acquire lock:
ffffffff8d31cf60 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x2c/0x60 kernel/printk/printk.c:1855

but task is already holding lock:
ffff8880b984003f (&c->lock){-.-.}-{2:2}, at: local_lock_acquire+0x0/0x70

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&c->lock){-.-.}-{2:2}:
       local_lock_acquire+0x21/0x70 include/linux/local_lock_internal.h:29
       ___slab_alloc+0x1fa/0x1100 mm/slub.c:3134
       __slab_alloc mm/slub.c:3314 [inline]
       __slab_alloc_node mm/slub.c:3367 [inline]
       slab_alloc_node mm/slub.c:3460 [inline]
       slab_alloc mm/slub.c:3478 [inline]
       __kmem_cache_alloc_lru mm/slub.c:3485 [inline]
       kmem_cache_alloc+0x1bf/0x300 mm/slub.c:3494
       kmem_cache_zalloc include/linux/slab.h:693 [inline]
       fill_pool lib/debugobjects.c:168 [inline]
       debug_objects_fill_pool+0x6f1/0x990 lib/debugobjects.c:615
       debug_object_activate+0x12b/0x530 lib/debugobjects.c:713
       debug_work_activate kernel/workqueue.c:549 [inline]
       __queue_work+0xb26/0xf10 kernel/workqueue.c:1713
       queue_delayed_work_on+0x15a/0x260 kernel/workqueue.c:1900
       process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
       worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
       kthread+0x2b8/0x350 kernel/kthread.c:389
       ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
       ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296

-> #3 (&pool->lock){-.-.}-{2:2}:
       __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
       _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
       __queue_work+0x537/0xf10
       queue_work_on+0x14f/0x250 kernel/workqueue.c:1744
       queue_work include/linux/workqueue.h:506 [inline]
       rpm_suspend+0x11bb/0x1c00 drivers/base/power/runtime.c:660
       __pm_runtime_idle+0x131/0x1a0 drivers/base/power/runtime.c:1102
       pm_runtime_put include/linux/pm_runtime.h:462 [inline]
       __device_attach+0x3e1/0x510 drivers/base/dd.c:1046
       bus_probe_device+0x185/0x260 drivers/base/bus.c:532
       device_add+0xb75/0xf60 drivers/base/core.c:3625
       serial_base_port_add+0x1ff/0x2a0 drivers/tty/serial/serial_base_bus.c:145
       serial_core_port_device_add drivers/tty/serial/serial_core.c:3316 [inline]
       serial_core_register_port+0x38d/0x1e40 drivers/tty/serial/serial_core.c:3357
       serial8250_register_8250_port+0x1436/0x1cb0 drivers/tty/serial/8250/8250_core.c:1137
       serial_pnp_probe+0x7d5/0xa20 drivers/tty/serial/8250/8250_pnp.c:478
       pnp_device_probe+0x2b0/0x460 drivers/pnp/driver.c:111
       really_probe+0x294/0xc30 drivers/base/dd.c:658
       __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:798
       driver_probe_device+0x50/0x420 drivers/base/dd.c:828
       __driver_attach+0x45c/0x710 drivers/base/dd.c:1214
       bus_for_each_dev+0x236/0x2b0 drivers/base/bus.c:368
       bus_add_driver+0x343/0x620 drivers/base/bus.c:673
       driver_register+0x23a/0x320 drivers/base/driver.c:246
       serial8250_init+0x9a/0x170 drivers/tty/serial/8250/8250_core.c:1237
       do_one_initcall+0x23d/0x7d0 init/main.c:1232
       do_initcall_level+0x157/0x210 init/main.c:1294
       do_initcalls+0x3f/0x80 init/main.c:1310
       kernel_init_freeable+0x43b/0x5d0 init/main.c:1546
       kernel_init+0x1d/0x2a0 init/main.c:1437
       ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
       ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296

-> #2 (&dev->power.lock){-...}-{2:2}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
       __pm_runtime_resume+0x112/0x180 drivers/base/power/runtime.c:1169
       pm_runtime_get include/linux/pm_runtime.h:410 [inline]
       __uart_start+0x18f/0x3c0 drivers/tty/serial/serial_core.c:149
       uart_write+0x44e/0x5e0 drivers/tty/serial/serial_core.c:622
       process_output_block drivers/tty/n_tty.c:585 [inline]
       n_tty_write+0xd39/0x1200 drivers/tty/n_tty.c:2366
       do_tty_write drivers/tty/tty_io.c:1027 [inline]
       file_tty_write+0x51c/0x960 drivers/tty/tty_io.c:1098
       call_write_iter include/linux/fs.h:1871 [inline]
       new_sync_write fs/read_write.c:491 [inline]
       vfs_write+0x782/0xaf0 fs/read_write.c:584
       ksys_write+0x1a0/0x2c0 fs/read_write.c:637
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #1 (&port_lock_key){-.-.}-{2:2}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
       serial8250_console_write+0x1a8/0x18a0 drivers/tty/serial/8250/8250_port.c:3403
       console_emit_next_record kernel/printk/printk.c:2877 [inline]
       console_flush_all+0x75e/0xd70 kernel/printk/printk.c:2933
       console_unlock+0xff/0x270 kernel/printk/printk.c:3007
       vprintk_emit+0xd5/0x1f0 kernel/printk/printk.c:2307
       _printk+0xd5/0x120 kernel/printk/printk.c:2328
       register_console+0xd52/0x1140 kernel/printk/printk.c:3458
       univ8250_console_init+0x45/0x50 drivers/tty/serial/8250/8250_core.c:716
       console_init+0x193/0x670 kernel/printk/printk.c:3601
       start_kernel+0x2d2/0x4f0 init/main.c:1004
       x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:556
       x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:537
       secondary_startup_64_no_verify+0x168/0x16b

-> #0 (console_owner){....}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3142 [inline]
       check_prevs_add kernel/locking/lockdep.c:3261 [inline]
       validate_chain kernel/locking/lockdep.c:3876 [inline]
       __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5144
       lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5761
       console_lock_spinning_enable+0x55/0x60 kernel/printk/printk.c:1858
       console_emit_next_record kernel/printk/printk.c:2871 [inline]
       console_flush_all+0x727/0xd70 kernel/printk/printk.c:2933
       console_unlock+0xff/0x270 kernel/printk/printk.c:3007
       vprintk_emit+0xd5/0x1f0 kernel/printk/printk.c:2307
       _printk+0xd5/0x120 kernel/printk/printk.c:2328
       __report_bug lib/bug.c:195 [inline]
       report_bug+0x346/0x500 lib/bug.c:219
       handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:324
       exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:345
       asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:568
       arch_local_irq_restore arch/x86/include/asm/irqflags.h:134 [inline]
       ___slab_alloc+0x608/0x1100 mm/slub.c:3148
       __slab_alloc mm/slub.c:3314 [inline]
       __slab_alloc_node mm/slub.c:3367 [inline]
       slab_alloc_node mm/slub.c:3460 [inline]
       __kmem_cache_alloc_node+0x1af/0x270 mm/slub.c:3509
       __do_kmalloc_node mm/slab_common.c:984 [inline]
       __kmalloc+0xa8/0x230 mm/slab_common.c:998
       kmalloc_array include/linux/slab.h:619 [inline]
       kcalloc include/linux/slab.h:650 [inline]
       iter_file_splice_write+0x2a9/0x1010 fs/splice.c:679
       do_splice_from fs/splice.c:934 [inline]
       direct_splice_actor+0xea/0x1c0 fs/splice.c:1143
       splice_direct_to_actor+0x376/0x9e0 fs/splice.c:1089
       do_splice_direct+0x2ac/0x3f0 fs/splice.c:1195
       do_sendfile+0x623/0x1070 fs/read_write.c:1254
       __do_sys_sendfile64 fs/read_write.c:1322 [inline]
       __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

other info that might help us debug this:

Chain exists of:
  console_owner --> &pool->lock --> &c->lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&c->lock);
                               lock(&pool->lock);
                               lock(&c->lock);
  lock(console_owner);

 *** DEADLOCK ***

4 locks held by syz-executor.0/5968:
 #0: ffff888140be0410 (sb_writers#14){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
 #1: ffff8880b984003f (&c->lock){-.-.}-{2:2}, at: local_lock_acquire+0x0/0x70
 #2: ffffffff8d204880 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0xbc/0x1f0 kernel/printk/printk.c:2306
 #3: ffffffff8d2044b0 (console_srcu){....}-{0:0}, at: rcu_lock_acquire+0x9/0x40 include/linux/rcupdate.h:303

stack backtrace:
CPU: 0 PID: 5968 Comm: syz-executor.0 Not tainted 6.5.0-rc3-syzkaller-g18b44bc5a672 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 check_noncircular+0x375/0x4a0 kernel/locking/lockdep.c:2195
 check_prev_add kernel/locking/lockdep.c:3142 [inline]
 check_prevs_add kernel/locking/lockdep.c:3261 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5144
 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5761
 console_lock_spinning_enable+0x55/0x60 kernel/printk/printk.c:1858
 console_emit_next_record kernel/printk/printk.c:2871 [inline]
 console_flush_all+0x727/0xd70 kernel/printk/printk.c:2933
 console_unlock+0xff/0x270 kernel/printk/printk.c:3007
 vprintk_emit+0xd5/0x1f0 kernel/printk/printk.c:2307
 _printk+0xd5/0x120 kernel/printk/printk.c:2328
 __report_bug lib/bug.c:195 [inline]
 report_bug+0x346/0x500 lib/bug.c:219
 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:324
 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:345
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:568
RIP: 0010:get_freelist mm/slub.c:3048 [inline]
RIP: 0010:___slab_alloc+0x608/0x1100 mm/slub.c:3143
Code: 02 00 00 8b 54 24 10 0f 84 61 fa ff ff fb e9 5b fa ff ff e8 3a 67 d8 08 41 f7 c6 00 02 00 00 0f 85 68 fd ff ff e9 64 fd ff ff <0f> 0b e9 47 fc ff ff e8 1c 67 d8 08 e9 59 fb ff ff e8 12 67 d8 08
RSP: 0018:ffffc90008c476b8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b9840040 RCX: ffffffff816b85c5
RDX: 0000000000000000 RSI: ffffffff8b0aa240 RDI: ffffffff8b58a580
RBP: 0000000000000000 R08: dffffc0000000000 R09: 1ffffffff20f6260
R10: dffffc0000000000 R11: fffffbfff20f6261 R12: ffffea0000859c00
R13: 0000000000000000 R14: 0000000000000246 R15: ffff8880b9840020
 __slab_alloc mm/slub.c:3314 [inline]
 __slab_alloc_node mm/slub.c:3367 [inline]
 slab_alloc_node mm/slub.c:3460 [inline]
 __kmem_cache_alloc_node+0x1af/0x270 mm/slub.c:3509
 __do_kmalloc_node mm/slab_common.c:984 [inline]
 __kmalloc+0xa8/0x230 mm/slab_common.c:998
 kmalloc_array include/linux/slab.h:619 [inline]
 kcalloc include/linux/slab.h:650 [inline]
 iter_file_splice_write+0x2a9/0x1010 fs/splice.c:679
 do_splice_from fs/splice.c:934 [inline]
 direct_splice_actor+0xea/0x1c0 fs/splice.c:1143
 splice_direct_to_actor+0x376/0x9e0 fs/splice.c:1089
 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1195
 do_sendfile+0x623/0x1070 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc43e47c899
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc43f1ef0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fc43e59bf80 RCX: 00007fc43e47c899
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fc43e4d8ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 00008400fffffffa R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc43e59bf80 R15: 00007ffd229592b8
 </TASK>
WARNING: CPU: 0 PID: 5968 at mm/slub.c:3048 arch_local_irq_restore arch/x86/include/asm/irqflags.h:134 [inline]
WARNING: CPU: 0 PID: 5968 at mm/slub.c:3048 ___slab_alloc+0x608/0x1100 mm/slub.c:3148
Modules linked in:
CPU: 0 PID: 5968 Comm: syz-executor.0 Not tainted 6.5.0-rc3-syzkaller-g18b44bc5a672 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:get_freelist mm/slub.c:3048 [inline]
RIP: 0010:___slab_alloc+0x608/0x1100 mm/slub.c:3143
Code: 02 00 00 8b 54 24 10 0f 84 61 fa ff ff fb e9 5b fa ff ff e8 3a 67 d8 08 41 f7 c6 00 02 00 00 0f 85 68 fd ff ff e9 64 fd ff ff <0f> 0b e9 47 fc ff ff e8 1c 67 d8 08 e9 59 fb ff ff e8 12 67 d8 08
RSP: 0018:ffffc90008c476b8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b9840040 RCX: ffffffff816b85c5
RDX: 0000000000000000 RSI: ffffffff8b0aa240 RDI: ffffffff8b58a580
RBP: 0000000000000000 R08: dffffc0000000000 R09: 1ffffffff20f6260
R10: dffffc0000000000 R11: fffffbfff20f6261 R12: ffffea0000859c00
R13: 0000000000000000 R14: 0000000000000246 R15: ffff8880b9840020
FS:  00007fc43f1ef6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc43e505dae CR3: 0000000077786000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __slab_alloc mm/slub.c:3314 [inline]
 __slab_alloc_node mm/slub.c:3367 [inline]
 slab_alloc_node mm/slub.c:3460 [inline]
 __kmem_cache_alloc_node+0x1af/0x270 mm/slub.c:3509
 __do_kmalloc_node mm/slab_common.c:984 [inline]
 __kmalloc+0xa8/0x230 mm/slab_common.c:998
 kmalloc_array include/linux/slab.h:619 [inline]
 kcalloc include/linux/slab.h:650 [inline]
 iter_file_splice_write+0x2a9/0x1010 fs/splice.c:679
 do_splice_from fs/splice.c:934 [inline]
 direct_splice_actor+0xea/0x1c0 fs/splice.c:1143
 splice_direct_to_actor+0x376/0x9e0 fs/splice.c:1089
 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1195
 do_sendfile+0x623/0x1070 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc43e47c899
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc43f1ef0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fc43e59bf80 RCX: 00007fc43e47c899
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fc43e4d8ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 00008400fffffffa R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc43e59bf80 R15: 00007ffd229592b8
 </TASK>