INFO: task syz-executor.5:18002 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-13413-g0a3f9a6b0265 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27296 pid:18002 ppid:12594 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xcce/0x5b20 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common+0x7df/0xf30 kernel/locking/rwsem.c:1250
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
do_user_addr_fault+0xa51/0x1230 arch/x86/mm/fault.c:1358
handle_page_fault arch/x86/mm/fault.c:1498 [inline]
exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1554
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7fa3c28276f6
RSP: 002b:00007ffee1ef8b48 EFLAGS: 00010287
RAX: 0000001b2e832000 RBX: 00007fa3c29ac018 RCX: 0000001b2e820000
RDX: 0000001b2e832004 RSI: 0000001b2e8314c0 RDI: 00000000aaec7baf
RBP: 00000000aaec7baf R08: 0000001b2ee20000 R09: 00000000aaec7bb3
R10: 00007ffee1f2d090 R11: 000000000003f7dc R12: 00007fa3c29a0000
R13: 0000000000000001 R14: 0000000000000e20 R15: ffffffff817e3925
INFO: task syz-executor.5:18003 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-13413-g0a3f9a6b0265 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:26312 pid:18003 ppid:12594 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xcce/0x5b20 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
io_schedule+0xbe/0x130 kernel/sched/core.c:8884
folio_wait_bit_common+0x394/0x9b0 mm/filemap.c:1301
folio_lock include/linux/pagemap.h:952 [inline]
write_cache_pages+0x5e5/0xe70 mm/page-writeback.c:2440
mpage_writepages+0xc6/0x170 fs/mpage.c:653
do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
filemap_fdatawrite_wbc mm/filemap.c:390 [inline]
filemap_fdatawrite_wbc+0x147/0x1b0 mm/filemap.c:380
__filemap_fdatawrite_range+0xb8/0xf0 mm/filemap.c:423
file_write_and_wait_range+0xce/0x140 mm/filemap.c:781
__generic_file_fsync+0x78/0x1f0 fs/libfs.c:1132
fat_file_fsync+0x77/0x200 fs/fat/file.c:191
vfs_fsync_range+0x13e/0x230 fs/sync.c:188
generic_write_sync include/linux/fs.h:2452 [inline]
generic_file_write_iter+0x25a/0x350 mm/filemap.c:4090
call_write_iter include/linux/fs.h:1851 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x9ed/0xe10 fs/read_write.c:584
ksys_write+0x12b/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa3c288c0f9
RSP: 002b:00007fa3c35eb168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa3c29abf80 RCX: 00007fa3c288c0f9
RDX: 000000000208e24b RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007fa3c28e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffee1ef8b7f R14: 00007fa3c35eb300 R15: 0000000000022000
INFO: task syz-executor.5:18011 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-13413-g0a3f9a6b0265 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27176 pid:18011 ppid:12594 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xcce/0x5b20 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
io_schedule+0xbe/0x130 kernel/sched/core.c:8884
folio_wait_bit_common+0x394/0x9b0 mm/filemap.c:1301
folio_wait_writeback+0x47/0x3b0 mm/page-writeback.c:3127
migrate_folio_unmap mm/migrate.c:1192 [inline]
migrate_pages_batch+0x1281/0x3660 mm/migrate.c:1685
migrate_pages+0x1b73/0x2300 mm/migrate.c:1973
do_mbind mm/mempolicy.c:1338 [inline]
kernel_mbind+0x4df/0x7c0 mm/mempolicy.c:1485
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa3c288c0f9
RSP: 002b:00007fa3c35ca168 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007fa3c29ac050 RCX: 00007fa3c288c0f9
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020001000
RBP: 00007fa3c28e7ae9 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffee1ef8b7f R14: 00007fa3c35ca300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c794e30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c794b30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8c795980 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
4 locks held by klogd/4431:
#0: ffff8880b993c298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:539
#1: ffff888027a74ab0 (&mm->cid_lock){....}-{2:2}, at: fs_reclaim_acquire+0xb6/0x160 mm/page_alloc.c:4729
#2: ffff88807e6f8970 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xae/0x1fd0 kernel/sched/core.c:4159
#3: ffff8880b993c298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:539
2 locks held by getty/4758:
#0: ffff88802c0e4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:7/5244:
#0: ffff88814018e138 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88814018e138 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88814018e138 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff88814018e138 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff88814018e138 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff88814018e138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x86d/0x1820 kernel/workqueue.c:2361
#1: ffffc90004d9fda8 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1820 kernel/workqueue.c:2365
#2: ffff88806fe220e0 (&type->s_umount_key#71){++++}-{3:3}, at: trylock_super+0x21/0x110 fs/super.c:414
1 lock held by syz-executor.5/18002:
#0: ffff88802bff2fd8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88802bff2fd8 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0xa51/0x1230 arch/x86/mm/fault.c:1358
2 locks held by syz-executor.5/18003:
#0: ffff88804d1385e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x100 fs/file.c:1046
#1: ffff88806fe22460 (sb_writers#20){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
1 lock held by syz-executor.5/18011:
#0: ffff88802bff2fd8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff88802bff2fd8 (&mm->mmap_lock){++++}-{3:3}, at: do_mbind mm/mempolicy.c:1312 [inline]
#0: ffff88802bff2fd8 (&mm->mmap_lock){++++}-{3:3}, at: kernel_mbind+0x318/0x7c0 mm/mempolicy.c:1485
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-syzkaller-13413-g0a3f9a6b0265 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x316/0x3e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x33f/0x460 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe94/0x11e0 kernel/hung_task.c:379
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5828 Comm: kworker/u4:18 Not tainted 6.2.0-syzkaller-13413-g0a3f9a6b0265 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:preempt_count_sub+0x63/0x150 kernel/sched/core.c:5811
Code: 82 10 85 c9 75 1b 65 8b 05 c2 25 ab 7e 89 c2 81 e2 ff ff ff 7f 39 da 7c 13 81 fb fe 00 00 00 76 63 f7 db 65 01 1d a5 25 ab 7e <5b> c3 e8 96 b5 c1 02 85 c0 74 f5 48 c7 c0 ac 79 78 8e 48 ba 00 00
RSP: 0018:ffffc90014a3fbf0 EFLAGS: 00000097
RAX: 0000000080000001 RBX: 00000000ffffffff RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffffff89e3e7ac R08: 0000000000000000 R09: ffffffff8e784497
R10: fffffbfff1cf0892 R11: 0000000000000000 R12: ffff8880453f97a8
R13: ffff8880453f8c80 R14: dffffc0000000000 R15: ffffffff89e3eb00
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e05e2b11c0 CR3: 000000004700a000 CR4: 0000000000350ee0
Call Trace:
__local_bh_enable_ip+0x9f/0x130 kernel/softirq.c:399
spin_unlock_bh include/linux/spinlock.h:395 [inline]
batadv_nc_purge_paths+0x1cc/0x3c0 net/batman-adv/network-coding.c:471
batadv_nc_worker+0x8fa/0xfe0 net/batman-adv/network-coding.c:720
process_one_work+0x9bf/0x1820 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308