INFO: task jfsCommit:118 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit       state:D stack:27136 pid:118   tgid:118   ppid:2      task_flags:0x200040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x61e/0x920
 down_read_nested+0x9b/0x2e0
 diUpdatePMap+0x9b/0xe60
 txUpdateMap+0x7da/0x9c0
 jfs_lazycommit+0x43d/0xaa0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task kworker/u9:3:3869 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:3    state:D stack:24704 pid:3869  tgid:3869  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: writeback wb_workfn (flush-7:3)
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 lmGroupCommit+0x764/0xb90
 txCommit+0x4909/0x5410
 jfs_commit_inode+0x2ef/0x530
 jfs_write_inode+0x145/0x220
 __writeback_single_inode+0x75a/0x11a0
 writeback_sb_inodes+0x992/0x1a20
 wb_writeback+0x456/0xb70
 wb_workfn+0x414/0xf50
 process_scheduled_works+0xb6e/0x18c0
 worker_thread+0xa53/0xfc0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task syz.3.400:7589 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.400       state:D stack:24384 pid:7589  tgid:7588  ppid:6231   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 txLock+0xfd9/0x1cc0
 diWrite+0x444/0x1f40
 txCommit+0x869/0x5410
 duplicateIXtree+0x299/0x490
 diAllocAG+0x179e/0x1db0
 diAlloc+0x1d5/0x1680
 ialloc+0x8c/0x8f0
 jfs_create+0x1da/0xb10
 path_openat+0x1395/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_open+0x11e/0x150
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd0bc79c799
RSP: 002b:00007fd0bd695028 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fd0bca15fa0 RCX: 00007fd0bc79c799
RDX: 0000000000000022 RSI: 0000000000145142 RDI: 0000200000000000
RBP: 00007fd0bc832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd0bca16038 R14: 00007fd0bca15fa0 R15: 00007ffe05e8abb8
 </TASK>
INFO: task syz.3.400:7612 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.400       state:D stack:28160 pid:7612  tgid:7588  ppid:6231   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 wb_wait_for_completion+0x3e8/0x790
 sync_inodes_sb+0x1de/0xbd0
 sync_filesystem+0x17a/0x230
 jfs_reconfigure+0xc6/0xa00
 reconfigure_super+0x227/0x8a0
 path_mount+0xdc5/0x10e0
 __se_sys_mount+0x31d/0x420
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd0bc79da0a
RSP: 002b:00007fd0bd673e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fd0bd673ee0 RCX: 00007fd0bc79da0a
RDX: 0000200000000f40 RSI: 0000200000000f00 RDI: 0000000000000000
RBP: 0000200000000f40 R08: 00007fd0bd673ee0 R09: 0000000001a5a438
R10: 0000000001a5a438 R11: 0000000000000246 R12: 0000200000000f00
R13: 00007fd0bd673ea0 R14: 0000000000000000 R15: 0000200000006900
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e75e520 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u11:0/56:
 #0: ffff8881781c6148 ((wq_completion)hci1){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc9000100fc40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffff88816a708ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400
1 lock held by jfsCommit/118:
 #0: ffff8881be71c150 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diUpdatePMap+0x9b/0xe60
3 locks held by kworker/u9:3/3869:
 #0: ffff8881626a6948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc90004447c40 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffff88801f0dcb08 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x1ca/0x530
2 locks held by getty/5635:
 #0: ffff88810fb360a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
5 locks held by syz.3.400/7589:
 #0: ffff88801e740420 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff8881be71bc68 (&type->i_mutex_dir_key#19){++++}-{4:4}, at: path_openat+0xb4c/0x3860
 #2: ffff8881b42809b0 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diAlloc+0x1b5/0x1680
 #3: ffff8881b4280890 (&imap->im_freelock){+.+.}-{4:4}, at: diAllocAG+0x718/0x1db0
 #4: ffff8881be71c150 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocAG+0xac4/0x1db0
2 locks held by syz.3.400/7612:
 #0: ffff88801e7400e0 (&type->s_umount_key#65){++++}-{4:4}, at: path_mount+0xd7d/0x10e0
 #1: ffff888103f48820 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x1c2/0xbd0
1 lock held by syz.7.797/9199:
 #0: ffff88801e7400e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.797/9200:
 #0: ffff88801e7400e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.3.1380/11994:
 #0: ffff88801e7400e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
6 locks held by syz-executor/12100:
 #0: ffff88810dfd8420 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x227/0xb90
 #1: ffff88816b5e6088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1de/0x540
 #2: ffff88816dc00788 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x231/0x540
 #3: ffffffff8f442b68 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd7/0x370
 #4: ffff8881122b30e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb6/0x860
 #5: ffff8881122b2250 (&devlink->lock_key#5){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x170

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 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+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 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: 5554 Comm: dhcpcd 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:sched_cgroup_fork+0x0/0x3d0
Code: 8c ee fe ff ff e8 90 0d 9b 00 e9 e4 fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 55 41 57 41 56 41 55 41 54 53 48 83 ec 38 48 89 f3 49
RSP: 0018:ffffc90003b47a38 EFLAGS: 00000246
RAX: ffffffff8185bf14 RBX: 0000000000002f9a RCX: 0000000000000000
RDX: ffff88810639d7c0 RSI: ffffc90003b47da0 RDI: ffff888169b1ba80
RBP: ffffc90003b47c10 R08: ffffffff81bfdeba R09: ffffffff8e75e520
R10: dffffc0000000000 R11: ffffffff81bf3a80 R12: ffff88810639e150
R13: ffff8881072bc180 R14: 0000000000000000 R15: ffff888169b1cfd0
FS:  00007f42b9dfe740(0000) GS:ffff88818de5d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f8f2b5fa18 CR3: 0000000114d14000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 copy_process+0x2381/0x3cd0
 kernel_clone+0x248/0x8e0
 __x64_sys_clone+0x1b6/0x230
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f42b9eaea12
Code: 41 5d 41 5e 41 5f c3 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 e7 43 0f 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd23407548 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000561aa83d5e01 RCX: 00007f42b9eaea12
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd23427ab8 R08: 0000000000000000 R09: 0000561aa83d5de0
R10: 00007f42b9dfea10 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000561aa83d5e14
 </TASK>
