INFO: task syz.2.72:6406 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.72        state:D stack:15016 pid:6406  tgid:6405  ppid:5853   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x872/0xfe0
 down_write+0x1ab/0x1f0
 bch2_direct_write+0x192/0x2ce0
 bch2_write_iter+0x18f/0x2b90
 iter_file_splice_write+0x975/0x10e0
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x5a8/0xcc0
 do_splice_direct+0x181/0x270
 do_sendfile+0x4da/0x7e0
 __se_sys_sendfile64+0x13e/0x190
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd18278eba9
RSP: 002b:00007fd18369f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fd1829d5fa0 RCX: 00007fd18278eba9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007fd182811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd1829d6038 R14: 00007fd1829d5fa0 R15: 00007ffd4059dcf8
 </TASK>
INFO: task syz.2.72:6445 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.72        state:D stack:22856 pid:6445  tgid:6405  ppid:5853   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x872/0xfe0
 down_write+0x1ab/0x1f0
 vfs_unlink+0xf2/0x650
 do_unlinkat+0x345/0x560
 __x64_sys_unlinkat+0xd3/0xf0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd18278eba9
RSP: 002b:00007fd18367e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007fd1829d6090 RCX: 00007fd18278eba9
RDX: 0000000000000000 RSI: 0000200000000c40 RDI: ffffffffffffff9c
RBP: 00007fd182811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd1829d6128 R14: 00007fd1829d6090 R15: 00007ffd4059dcf8
 </TASK>
INFO: task syz.2.72:6453 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.72        state:D stack:24648 pid:6453  tgid:6405  ppid:5853   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x5fd/0x8f0
 down_read+0x98/0x2e0
 lookup_slow+0x46/0x70
 walk_component+0x2d2/0x400
 path_lookupat+0x163/0x430
 filename_lookup+0x212/0x570
 do_linkat+0x120/0x560
 __x64_sys_link+0x82/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd18278eba9
RSP: 002b:00007fd18363c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 00007fd1829d6270 RCX: 00007fd18278eba9
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 00002000000000c0
RBP: 00007fd182811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd1829d6308 R14: 00007fd1829d6270 R15: 00007ffd4059dcf8
 </TASK>
INFO: task syz.2.72:6454 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.72        state:D stack:27800 pid:6454  tgid:6405  ppid:5853   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x872/0xfe0
 down_write+0x1ab/0x1f0
 process_measurement+0x3d8/0x1a40
 ima_file_check+0xd7/0x120
 security_file_post_open+0xbb/0x290
 path_openat+0x2f26/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd18278eba9
RSP: 002b:00007fd18361b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd1829d6360 RCX: 00007fd18278eba9
RDX: 0000000000105042 RSI: 0000200000000080 RDI: ffffffffffffff9c
RBP: 00007fd182811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd1829d63f8 R14: 00007fd1829d6360 R15: 00007ffd4059dcf8
 </TASK>
INFO: task syz.2.72:6455 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.72        state:D stack:27800 pid:6455  tgid:6405  ppid:5853   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x872/0xfe0
 down_write+0x1ab/0x1f0
 process_measurement+0x3d8/0x1a40
 ima_file_check+0xd7/0x120
 security_file_post_open+0xbb/0x290
 path_openat+0x2f26/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd18278eba9
RSP: 002b:00007fd1835fa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd1829d6450 RCX: 00007fd18278eba9
RDX: 0000000000000441 RSI: 0000200000000180 RDI: ffffffffffffff9c
RBP: 00007fd182811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000020 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd1829d64e8 R14: 00007fd1829d6450 R15: 00007ffd4059dcf8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139f20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
4 locks held by kworker/u9:4/1090:
 #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90007217bc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f539b08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
 #3: ffffffff8e13f9b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730
2 locks held by dhcpcd/5595:
 #0: ffff8881129dc6d8 (nlk_cb_mutex-ROUTE){+.+.}-{4:4}, at: netlink_dump+0xbd/0xe90
 #1: ffffffff8f539b08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dumpit+0x92/0x200
2 locks held by getty/5676:
 #0: ffff88801f9fa0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029032f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
3 locks held by kworker/u8:3/5881:
 #0: ffff88802275e948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000416fbc0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f539b08 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x112/0x14b0
4 locks held by kworker/u8:4/5882:
 #0: ffff88801b2f7148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000417fbc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f52cc50 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800
 #3: ffffffff8f539b08 (rtnl_mutex){+.+.}-{4:4}, at: wg_destruct+0x25/0x2f0
2 locks held by syz.2.72/6406:
 #0: ffff8880220e2428 (sb_writers#14){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160
 #1: ffff888111b688e0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: bch2_direct_write+0x192/0x2ce0
3 locks held by syz.2.72/6445:
 #0: ffff8880220e2428 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff888111b69fa8 (&sb->s_type->i_mutex_key#20/1){+.+.}-{4:4}, at: do_unlinkat+0x1c7/0x560
 #2: ffff888111b688e0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: vfs_unlink+0xf2/0x650
2 locks held by syz.2.72/6452:
 #0: ffff8880220e2428 (sb_writers#14){.+.+}-{0:0}, at: vfs_fallocate+0x5f0/0x7e0
 #1: ffff888111b688e0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: bch2_fallocate_dispatch+0x10e/0x410
1 lock held by syz.2.72/6453:
 #0: ffff888111b69fa8 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: lookup_slow+0x46/0x70
1 lock held by syz.2.72/6454:
 #0: ffff888111b688e0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: process_measurement+0x3d8/0x1a40
1 lock held by syz.2.72/6455:
 #0: ffff888111b688e0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: process_measurement+0x3d8/0x1a40
2 locks held by syz-executor/6711:
2 locks held by syz-executor/7173:
 #0: ffff88803b6ae0e0 (&type->s_umount_key#104){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56e9c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
3 locks held by kworker/1:6/7326:
 #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000332fbc0 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8e13f9b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730
2 locks held by syz-executor/8645:
 #0: ffff8880350ba0e0 (&type->s_umount_key#104){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56e9c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz.9.351/9007:
 #0: ffff888048f800e0 (&type->s_umount_key#104){++++}-{4:4}, at: path_mount+0xcd2/0xfe0
 #1: ffffffff8e56e9c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
4 locks held by syz-executor/9137:
 #0: ffff888044c64dc0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x212/0x510
 #1: ffff888044c640b8 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x66a/0x1330
 #2: ffffffff8f69e888 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_hash_flush+0xa1/0x230
 #3: ffff88811bcd4338 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x70/0x680
2 locks held by syz-executor/9227:
 #0: ffffffff8f52cc50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x304/0x4d0
 #1: ffffffff8f539b08 (rtnl_mutex){+.+.}-{4:4}, at: wg_netns_pre_exit+0x1c/0x1d0

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6711 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:kasan_check_range+0x57/0x2c0
Code: 80 ff ff eb 11 cc cc cc f3 0f 1e fa 49 b9 00 00 00 00 00 00 00 ff f3 0f 1e fa 4c 39 cf 0f 82 58 02 00 00 49 89 ff 49 c1 ef 03 <49> ba 00 00 00 00 00 fc ff df 4f 8d 1c 17 49 ff c8 4d 89 c1 49 c1
RSP: 0018:ffffc9000323f648 EFLAGS: 00000a02
RAX: ffffffff840fb501 RBX: ffffea0001220580 RCX: ffffffff840fb5b3
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffea0001220580
RBP: ffffc9000323f7b0 R08: ffffea0001220588 R09: ffff800000000000
R10: 00000000ffffffff R11: 0000000000000000 R12: 00000000ffffffff
R13: ffffea0001220588 R14: 1ffff92000647ed4 R15: 1ffffd40002440b0
FS:  00005555811c4500(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f614dd07d60 CR3: 000000001f9f2000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 read_node_folio+0x323/0x3f0
 __get_node_folio+0x22a/0x1410
 f2fs_update_inode_page+0x82/0x190
 f2fs_write_checkpoint+0xb6e/0x1df0
 kill_f2fs_super+0x2c3/0x6c0
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9f0e18fed7
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffcaf9b7a18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f9f0e211c05 RCX: 00007f9f0e18fed7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcaf9b7ad0
RBP: 00007ffcaf9b7ad0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcaf9b8b60
R13: 00007f9f0e211c05 R14: 0000000000022c01 R15: 00007ffcaf9b8ba0
 </TASK>
