INFO: task syz-executor.1:12290 blocked for more than 143 seconds.
Not tainted 6.1.0-rc4-next-20221109-syzkaller-06615-g94db6b12c18d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23456 pid:12290 ppid:5311 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5211 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6528
schedule+0xda/0x1b0 kernel/sched/core.c:6604
io_schedule+0xba/0x130 kernel/sched/core.c:8784
folio_wait_bit_common+0x394/0x9b0 mm/filemap.c:1296
folio_lock include/linux/pagemap.h:938 [inline]
invalidate_inode_pages2_range+0x600/0x10b0 mm/truncate.c:659
iomap_dio_complete+0x518/0x920 fs/iomap/direct-io.c:115
iomap_dio_rw+0x6f/0xa0 fs/iomap/direct-io.c:694
ext4_dio_write_iter fs/ext4/file.c:587 [inline]
ext4_file_write_iter+0x1040/0x16e0 fs/ext4/file.c:698
call_write_iter include/linux/fs.h:2159 [inline]
do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735
do_iter_write+0x182/0x700 fs/read_write.c:861
vfs_iter_write+0x70/0xa0 fs/read_write.c:902
iter_file_splice_write+0x741/0xc90 fs/splice.c:686
do_splice_from fs/splice.c:764 [inline]
direct_splice_actor+0x110/0x180 fs/splice.c:931
splice_direct_to_actor+0x331/0x8a0 fs/splice.c:886
do_splice_direct+0x1a7/0x270 fs/splice.c:974
do_sendfile+0xb19/0x1270 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x45f679
RSP: 002b:00007f3eb2fad1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 000000000052bf00 RCX: 000000000045f679
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000006
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00008000fffffffe R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004f0998 R14: 00000000004b0443 R15: 00007f3eb2fad6bc
Showing all locks held in the system:
3 locks held by kworker/u4:1/11:
#0: ffff8880b9a3a2d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:537
#1: ffff8880b9a27748 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x212/0x930 kernel/sched/psi.c:964
#2: ffff8880b9a28358 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:999
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8bf884b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8bf881b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8bf89000 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6494
2 locks held by getty/4914:
#0: ffff88814a4ce098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by syz-executor.1/12290:
#0: ffff88814b93e460 (sb_writers#4){.+.+}-{0:0}, at: __do_sys_sendfile64 fs/read_write.c:1323 [inline]
#0: ffff88814b93e460 (sb_writers#4){.+.+}-{0:0}, at: __se_sys_sendfile64 fs/read_write.c:1309 [inline]
#0: ffff88814b93e460 (sb_writers#4){.+.+}-{0:0}, at: __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1309
#1: ffff8880707c5e48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880707c5e48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_dio_write_iter fs/ext4/file.c:525 [inline]
#1: ffff8880707c5e48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_file_write_iter+0xcae/0x16e0 fs/ext4/file.c:698
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc4-next-20221109-syzkaller-06615-g94db6b12c18d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x32f/0x3c0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xc71/0xfc0 kernel/hung_task.c:377
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.1.0-rc4-next-20221109-syzkaller-06615-g94db6b12c18d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: bat_events batadv_nc_worker
RIP: 0010:debug_lockdep_rcu_enabled+0x0/0x30 kernel/rcu/update.c:280
Code: c7 20 a2 ec 89 e8 80 14 00 00 65 c7 05 25 3c 61 76 00 00 00 00 eb bc e8 0e fb ff ff eb bc cc cc cc cc cc cc cc cc cc cc cc cc <8b> 05 b2 17 42 04 85 c0 74 21 8b 05 ac 4b 42 04 85 c0 74 17 65 48
RSP: 0018:ffffc90000107ba8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff815fea05
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff8de35310
RBP: 1ffff92000020f7a R08: 0000000000000000 R09: ffffffff8de35317
R10: fffffbfff1bc6a62 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000194
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000487000 CR3: 000000000bc8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:104 [inline]
rcu_read_lock_sched_held+0xd/0x70 kernel/rcu/update.c:123
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x5cb/0x810 kernel/locking/lockdep.c:5679
rcu_lock_release include/linux/rcupdate.h:330 [inline]
rcu_read_unlock include/linux/rcupdate.h:792 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x869/0xfa0 net/batman-adv/network-coding.c:719
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308