INFO: task syz.0.91:6097 blocked for more than 143 seconds.
      Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.91        state:D stack:27128 pid:6097  tgid:6086  ppid:5357   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
 inode_lock include/linux/fs.h:800 [inline]
 finish_preallocate_blocks fs/f2fs/file.c:561 [inline]
 f2fs_file_open+0x11b/0x3a0 fs/f2fs/file.c:614
 do_dentry_open+0x970/0x1440 fs/open.c:959
 vfs_open+0x3e/0x330 fs/open.c:1089
 do_open fs/namei.c:3727 [inline]
 path_openat+0x2b3e/0x3470 fs/namei.c:3886
 do_filp_open+0x235/0x490 fs/namei.c:3913
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_openat fs/open.c:1447 [inline]
 __se_sys_openat fs/open.c:1442 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1442
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa3d657def9
RSP: 002b:00007fa3d73ef038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa3d6736130 RCX: 00007fa3d657def9
RDX: 0000000000000000 RSI: 0000000020004280 RDI: ffffffffffffff9c
RBP: 00007fa3d65f09f6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa3d6736130 R15: 00007ffdb2b24d08
 </TASK>
INFO: task syz.0.91:6099 blocked for more than 144 seconds.
      Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.91        state:D stack:27392 pid:6099  tgid:6086  ppid:5357   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
 inode_lock include/linux/fs.h:800 [inline]
 do_lock_mount+0x112/0x3a0 fs/namespace.c:2580
 lock_mount fs/namespace.c:2622 [inline]
 do_new_mount_fc fs/namespace.c:3409 [inline]
 do_new_mount+0x43d/0xb40 fs/namespace.c:3474
 do_mount fs/namespace.c:3812 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3997
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa3d657def9
RSP: 002b:00007fa3d73ce038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa3d6736208 RCX: 00007fa3d657def9
RDX: 0000000020000000 RSI: 0000000020000980 RDI: 0000000000000000
RBP: 00007fa3d65f09f6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa3d6736208 R15: 00007ffdb2b24d08
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 #0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by kworker/u8:2/35:
4 locks held by kworker/u8:6/1063:
 #0: ffff888020ac2148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888020ac2148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc90004147d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc90004147d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
 #3: ffff888065aad2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2175 [inline]
 #3: ffff888065aad2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x5b0/0x7a0 fs/f2fs/segment.c:440
2 locks held by kworker/u8:11/1127:
2 locks held by getty/4974:
 #0: ffff88801bbf30a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/u9:2/5223:
 #0: ffff888058d38948 ((wq_completion)hci1){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888058d38948 ((wq_completion)hci1){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc9000359fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc9000359fd00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffff88806374cd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:327
6 locks held by syz.0.91/6096:
1 lock held by syz.0.91/6097:
 #0: ffff88805dacd050 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
 #0: ffff88805dacd050 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: finish_preallocate_blocks fs/f2fs/file.c:561 [inline]
 #0: ffff88805dacd050 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: f2fs_file_open+0x11b/0x3a0 fs/f2fs/file.c:614
1 lock held by syz.0.91/6099:
 #0: ffff88805dacd050 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
 #0: ffff88805dacd050 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: do_lock_mount+0x112/0x3a0 fs/namespace.c:2580
2 locks held by syz-executor/6632:
2 locks held by syz.4.155/6725:
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
 #1: ffff888025cda7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
 #1: ffff888025cda7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
2 locks held by syz.4.155/6727:
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
 #1: ffff888025cda7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
 #1: ffff888025cda7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
2 locks held by syz.0.164/6833:
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
 #1: ffff888025cda7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
 #1: ffff888025cda7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
2 locks held by syz.4.205/7208:
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
 #1: ffff888025cda7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
 #1: ffff888025cda7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
1 lock held by syz.0.212/7293:
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: super_lock+0x196/0x400 fs/super.c:120
1 lock held by syz-executor/7869:
 #0: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
 #0: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958
1 lock held by syz.4.323/8056:
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.2.276/8146:
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff888045cc80e0 (&type->s_umount_key#88){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
2 locks held by syz-executor/8186:
 #0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
 #1: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline]
 #1: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xff4/0x1040 kernel/hung_task.c:379
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6096 Comm: syz.0.91 Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
RIP: 0010:raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2629 [inline]
RIP: 0010:raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
RIP: 0010:atomic_long_set include/linux/atomic/atomic-instrumented.h:3224 [inline]
RIP: 0010:__rwsem_set_reader_owned kernel/locking/rwsem.c:176 [inline]
RIP: 0010:rwsem_set_reader_owned kernel/locking/rwsem.c:181 [inline]
RIP: 0010:rwsem_read_trylock kernel/locking/rwsem.c:249 [inline]
RIP: 0010:__down_read_common kernel/locking/rwsem.c:1249 [inline]
RIP: 0010:__down_read kernel/locking/rwsem.c:1263 [inline]
RIP: 0010:down_read+0x30f/0xa40 kernel/locking/rwsem.c:1528
Code: f6 48 8b 03 83 e0 02 49 09 c6 49 83 ce 01 48 89 df be 08 00 00 00 e8 f0 70 3d f6 43 80 3c 2f 00 74 08 48 89 df e8 31 6f 3d f6 <4c> 89 33 e9 0a 05 00 00 48 8d 9c 24 80 00 00 00 4c 8d 73 10 4c 89
RSP: 0018:ffffc9000362e6a0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff888024ca40c8 RCX: ffffffff8bba4150
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888024ca40c8
RBP: ffffc9000362e7f0 R08: ffff888024ca40cf R09: 1ffff11004994819
R10: dffffc0000000000 R11: ffffed100499481a R12: 1ffff920006c5ce0
R13: dffffc0000000000 R14: ffff888026c38001 R15: 1ffff11004994819
FS:  00007fa3d74106c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555558a58688 CR3: 000000006a70a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 f2fs_down_read fs/f2fs/f2fs.h:2159 [inline]
 f2fs_get_node_info+0xfd/0x1200 fs/f2fs/node.c:564
 is_alive fs/f2fs/gc.c:1118 [inline]
 gc_data_segment fs/f2fs/gc.c:1546 [inline]
 do_garbage_collect+0x2485/0x7d80 fs/f2fs/gc.c:1774
 f2fs_gc+0xf04/0x2fa0 fs/f2fs/gc.c:1877
 f2fs_balance_fs+0x5f8/0x7a0 fs/f2fs/segment.c:442
 f2fs_map_blocks+0x3dc5/0x4850 fs/f2fs/data.c:1781
 f2fs_expand_inode_data+0x622/0xbb0 fs/f2fs/file.c:1806
 f2fs_fallocate+0x448/0x960 fs/f2fs/file.c:1903
 vfs_fallocate+0x553/0x6c0 fs/open.c:334
 do_vfs_ioctl+0x2592/0x2e50 fs/ioctl.c:886
 __do_sys_ioctl fs/ioctl.c:905 [inline]
 __se_sys_ioctl+0x81/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa3d657def9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa3d7410038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa3d6736058 RCX: 00007fa3d657def9
RDX: 0000000020000200 RSI: 0000000040305828 RDI: 0000000000000004
RBP: 00007fa3d65f09f6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa3d6736058 R15: 00007ffdb2b24d08
 </TASK>