INFO: task syz-executor.2:11734 blocked for more than 143 seconds.
      Not tainted 6.3.0-rc7-syzkaller-00181-g8e41e0a57566 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:27184 pid:11734 ppid:5097   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5307 [inline]
 __schedule+0xc91/0x5770 kernel/sched/core.c:6625
 schedule+0xde/0x1a0 kernel/sched/core.c:6701
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
 __down_read_common+0x7df/0xf30 kernel/locking/rwsem.c:1250
 inode_lock_shared include/linux/fs.h:768 [inline]
 lookup_slow fs/namei.c:1702 [inline]
 walk_component+0x332/0x5a0 fs/namei.c:1994
 lookup_last fs/namei.c:2451 [inline]
 path_lookupat+0x1ba/0x840 fs/namei.c:2475
 do_tmpfile fs/namei.c:3665 [inline]
 path_openat+0x1633/0x2750 fs/namei.c:3706
 do_filp_open+0x1ba/0x410 fs/namei.c:3742
 do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
 do_sys_open fs/open.c:1364 [inline]
 __do_sys_openat fs/open.c:1380 [inline]
 __se_sys_openat fs/open.c:1375 [inline]
 __x64_sys_openat+0x143/0x1f0 fs/open.c:1375
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe45a28c169
RSP: 002b:00007fe45aefe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe45a3ac050 RCX: 00007fe45a28c169
RDX: 0000000000414081 RSI: 0000000020000cc0 RDI: ffffffffffffff9c
RBP: 00007fe45a2e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffff705ae4f R14: 00007fe45aefe300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8c794a70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8c794770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/27:
 #0: ffffffff8c7955c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
1 lock held by kswapd0/80:
2 locks held by getty/4747:
 #0: ffff88814a1d2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.3/5101:
 #0: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
 #0: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:989
3 locks held by kworker/u4:12/6057:
2 locks held by kworker/0:2/30323:
 #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
 #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
 #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
 #1: ffffc900035bfda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
2 locks held by syz-executor.5/11459:
2 locks held by syz-executor.2/11722:
1 lock held by syz-executor.2/11734:
 #0: ffff888074164c30 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
 #0: ffff888074164c30 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
 #0: ffff888074164c30 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
3 locks held by kworker/0:3/12530:
 #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
 #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
 #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
 #1: ffffc900035dfda8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
 #2: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
 #2: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:989

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.3.0-rc7-syzkaller-00181-g8e41e0a57566 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xe16/0x1090 kernel/hung_task.c:379
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11459 Comm: syz-executor.5 Not tainted 6.3.0-rc7-syzkaller-00181-g8e41e0a57566 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:unwind_next_frame+0xa8/0x1ef0 arch/x86/kernel/unwind_orc.c:452
Code: 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 42 17 00 00 49 8b 45 38 bf 01 00 00 00 48 89 44 24 10 <e8> a3 e4 1e 00 4d 8d 65 50 48 b8 00 00 00 00 00 fc ff df 4c 89 e2
RSP: 0018:ffffc90005b76f58 EFLAGS: 00000246
RAX: ffffc90005b77a68 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 1ffff92000b6ee00 RSI: ffffffff81e6854f RDI: 0000000000000001
RBP: ffffc90005b77010 R08: ffffffff8f0b5016 R09: ffffc90005b76ffc
R10: 0000000000000001 R11: ffffc90005b77a60 R12: ffffc90005b77080
R13: ffffc90005b76fc8 R14: ffff888027d557c0 R15: ffffea0002866a40
FS:  00007f45c1e83700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f107fe65ba0 CR3: 000000002779d000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 ____kasan_kmalloc mm/kasan/common.c:333 [inline]
 __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:196 [inline]
 __do_kmalloc_node mm/slab_common.c:967 [inline]
 __kmalloc_node+0x61/0x1a0 mm/slab_common.c:974
 kmalloc_array_node include/linux/slab.h:697 [inline]
 kcalloc_node include/linux/slab.h:702 [inline]
 memcg_alloc_slab_cgroups+0x8f/0x150 mm/memcontrol.c:2899
 memcg_slab_post_alloc_hook+0xa9/0x390 mm/slab.h:546
 slab_post_alloc_hook mm/slab.h:777 [inline]
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x1af/0x3b0 mm/slub.c:3476
 kmem_cache_zalloc include/linux/slab.h:710 [inline]
 alloc_buffer_head+0x24/0x150 fs/buffer.c:2947
 alloc_page_buffers+0x284/0x790 fs/buffer.c:872
 create_empty_buffers+0x30/0xf30 fs/buffer.c:1586
 create_page_buffers+0x440/0x640 fs/buffer.c:1703
 block_read_full_folio+0x20a/0xab0 fs/buffer.c:2299
 filemap_read_folio+0xdb/0x2c0 mm/filemap.c:2424
 do_read_cache_folio+0x1df/0x510 mm/filemap.c:3683
 do_read_cache_page mm/filemap.c:3749 [inline]
 read_cache_page+0x5d/0x160 mm/filemap.c:3758
 read_mapping_page include/linux/pagemap.h:769 [inline]
 dir_get_page fs/minix/dir.c:76 [inline]
 minix_find_entry+0x207/0x5f0 fs/minix/dir.c:176
 minix_inode_by_name+0x75/0x260 fs/minix/dir.c:460
 minix_lookup fs/minix/namei.c:30 [inline]
 minix_lookup+0x107/0x190 fs/minix/namei.c:22
 __lookup_slow+0x24c/0x460 fs/namei.c:1686
 lookup_slow fs/namei.c:1703 [inline]
 walk_component+0x33f/0x5a0 fs/namei.c:1994
 lookup_last fs/namei.c:2451 [inline]
 path_lookupat+0x1ba/0x840 fs/namei.c:2475
 do_tmpfile fs/namei.c:3665 [inline]
 path_openat+0x1633/0x2750 fs/namei.c:3706
 do_filp_open+0x1ba/0x410 fs/namei.c:3742
 do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
 do_sys_open fs/open.c:1364 [inline]
 __do_sys_openat fs/open.c:1380 [inline]
 __se_sys_openat fs/open.c:1375 [inline]
 __x64_sys_openat+0x143/0x1f0 fs/open.c:1375
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f45c108c169
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:00007f45c1e83168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f45c11ac050 RCX: 00007f45c108c169
RDX: 0000000000414081 RSI: 0000000020000cc0 RDI: ffffffffffffff9c
RBP: 00007f45c10e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffff6c43af R14: 00007f45c1e83300 R15: 0000000000022000
 </TASK>