INFO: task syz.3.118:6338 blocked for more than 143 seconds.
      Not tainted 6.11.0-rc7-syzkaller-00149-g0babf683783d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.118       state:D
 stack:23872 pid:6338  tgid:6300  ppid:5771   flags:0x00004004
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_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
 vfs_rename+0x6a2/0xf00 fs/namei.c:4937
 do_renameat2+0xd94/0x13f0 fs/namei.c:5123
 __do_sys_rename fs/namei.c:5170 [inline]
 __se_sys_rename fs/namei.c:5168 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5168
 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: 0033:0x7fc717b7def9
RSP: 002b:00007fc718928038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fc717d36130 RCX: 00007fc717b7def9
RDX: 0000000000000000 RSI: 0000000020000f40 RDI: 00000000200003c0
RBP: 00007fc717bf0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc717d36130 R15: 00007ffeac627068
 </TASK>

Showing all locks held in the system:
7 locks held by kworker/0:1/9:
3 locks held by kworker/u8:0/11:
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
4 locks held by kworker/u8:4/63:
 #0: ffff8880206c1948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff8880206c1948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc900015efd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc900015efd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffff8880324500e0 (&type->s_umount_key#72){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
 #3: ffff8880634dd2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2175 [inline]
 #3: ffff8880634dd2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x5b0/0x7a0 fs/f2fs/segment.c:440
2 locks held by getty/4977:
 #0: ffff8880305030a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:6/5770:
 #0: ffff88801a880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff88801a880948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc90004447d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc90004447d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffff888058588240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
6 locks held by syz.3.118/6337:
3 locks held by syz.3.118/6338:
 #0: ffff888032450420 (sb_writers#21){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
 #1: ffff88807cd59ba0 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
 #1: ffff88807cd59ba0 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3147 [inline]
 #1: ffff88807cd59ba0 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:5058
 #2: ffff88807cd5d050 (&sb->s_type->i_mutex_key#31/4){+.+.}-{3:3}, at: vfs_rename+0x6a2/0xf00 fs/namei.c:4937
2 locks held by syz.3.206/6866:
 #0: ffff8880324500e0 (&type->s_umount_key#72){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff8880324500e0 (&type->s_umount_key#72){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
 #1: ffff888025cfc7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
 #1: ffff888025cfc7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
2 locks held by syz.3.206/6907:
 #0: ffff8880324500e0 (
&type->s_umount_key
#72
){++++}-{3:3}
, at: __super_lock fs/super.c:58 [inline]
, at: super_lock+0x27c/0x400 fs/super.c:120
 #1: ffff888025cfc7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
 #1: ffff888025cfc7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
2 locks held by syz.2.239/7039:
 #0: ffff8880324500e0 (&type->s_umount_key#72){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff8880324500e0 (&type->s_umount_key#72){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
 #1: ffff888025cfc7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
 #1: ffff888025cfc7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
1 lock held by syz-executor/7121:
 #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
3 locks held by kworker/0:8/7341:
2 locks held by syz.0.258/7443:
 #0: ffff8880324500e0 (&type->s_umount_key#72){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff8880324500e0 (&type->s_umount_key#72){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
 #1: ffff888025cfc7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
 #1: ffff888025cfc7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
1 lock held by syz-executor/7671:
 #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.3.367/7959:
 #0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
 #0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3510

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00149-g0babf683783d #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: 6337 Comm: syz.3.118 Not tainted 6.11.0-rc7-syzkaller-00149-g0babf683783d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x1f/0x90 kernel/kcov.c:313
Code: 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 65 48 8b 14 25 c0 d6 03 00 65 8b 05 10 46 70 7e 25 00 01 ff 00 74 10 <3d> 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 8b 82 f8 15 00 00
RSP: 0018:ffffc90000a18580 EFLAGS: 00000206
RAX: 0000000000000100 RBX: 0000000000000001 RCX: ffffc90004c20000
RDX: ffff88802dbc0000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 1ffff920001430ce R08: ffffffff814137ed R09: ffffffff81413746
R10: 0000000000000003 R11: ffff88802dbc0000 R12: ffffc90004c26ed8
R13: ffffc90004c28000 R14: 1ffff920001430cd R15: dffffc0000000000
FS:  00007fc7189496c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0b2861440 CR3: 000000005ae82000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 on_stack arch/x86/include/asm/stacktrace.h:58 [inline]
 stack_access_ok arch/x86/kernel/unwind_orc.c:393 [inline]
 deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
 unwind_next_frame+0x109d/0x2a00 arch/x86/kernel/unwind_orc.c:585
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2256 [inline]
 slab_free mm/slub.c:4477 [inline]
 kmem_cache_free+0x145/0x350 mm/slub.c:4552
 skb_kfree_head net/core/skbuff.c:1082 [inline]
 skb_free_head net/core/skbuff.c:1096 [inline]
 skb_release_data+0x64d/0x880 net/core/skbuff.c:1123
 skb_release_all net/core/skbuff.c:1188 [inline]
 __kfree_skb net/core/skbuff.c:1202 [inline]
 consume_skb+0xb1/0x160 net/core/skbuff.c:1426
 mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2315
 __iterate_interfaces+0x222/0x510 net/mac80211/util.c:772
 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808
 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753
 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1770
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_is_held_type+0x13b/0x190
Code: 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 42 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc90004c263d8 EFLAGS: 00000206
RAX: 7b9242b58d6bc300 RBX: 0000000000000001 RCX: 0000000080000000
RDX: ffff88802dbc0000 RSI: ffffffff8beae6e0 RDI: ffffffff8c3fbb00
RBP: 0000000000000004 R08: ffffffff8bac22e7 R09: 1ffffffff27f4d08
R10: dffffc0000000000 R11: fffffbfff27f4d09 R12: 0000000000000246
R13: ffff88802dbc0000 R14: 00000000ffffffff R15: ffffffff8e738320
 xa_entry include/linux/xarray.h:1220 [inline]
 xas_descend lib/xarray.c:207 [inline]
 xas_load+0x478/0x5c0 lib/xarray.c:245
 filemap_get_entry+0x1f0/0x3b0 mm/filemap.c:1840
 __filemap_get_folio+0x79/0xc10 mm/filemap.c:1885
 pagecache_get_page+0x2c/0x200 mm/folio-compat.c:81
 find_get_page_flags include/linux/pagemap.h:732 [inline]
 f2fs_grab_cache_page+0x2b/0x320 fs/f2fs/f2fs.h:2756
 f2fs_ra_meta_pages+0x753/0xb10 fs/f2fs/checkpoint.c:303
 gc_data_segment fs/f2fs/gc.c:1535 [inline]
 do_garbage_collect+0x233f/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: 0033:0x7fc717b7def9
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:00007fc718949038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc717d36058 RCX: 00007fc717b7def9
RDX: 00000000200001c0 RSI: 0000000040305828 RDI: 0000000000000004
RBP: 00007fc717bf0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fc717d36058 R15: 00007ffeac627068
 </TASK>