INFO: task syz-executor.4:28721 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-10217-ga93e884edf61 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27008 pid:28721 ppid:5111 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x17d8/0x4990 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
rwsem_down_read_slowpath+0x5f4/0x950 kernel/locking/rwsem.c:1086
__down_read_common+0x61/0x2c0 kernel/locking/rwsem.c:1250
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
do_user_addr_fault arch/x86/mm/fault.c:1358 [inline]
handle_page_fault arch/x86/mm/fault.c:1498 [inline]
exc_page_fault+0x558/0x8a0 arch/x86/mm/fault.c:1554
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f21d142bd79
RSP: 002b:00007ffc51923f40 EFLAGS: 00010246
RAX: 00000000200000c0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000555556cf52e8
RBP: 00007ffc51924038 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f21d1001c80 R11: 00000000000503f4 R12: 0000000000196385
R13: 00007ffc51924060 R14: 00007ffc51924080 R15: 0000000000000032
INFO: task syz-executor.4:28728 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-10217-ga93e884edf61 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24840 pid:28728 ppid:5111 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x17d8/0x4990 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
io_schedule+0x8c/0x100 kernel/sched/core.c:8884
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301
folio_lock include/linux/pagemap.h:952 [inline]
write_cache_pages+0x58f/0x1450 mm/page-writeback.c:2440
mpage_writepages+0x107/0x1d0 fs/mpage.c:653
do_writepages+0x3a6/0x670 mm/page-writeback.c:2551
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:390
__filemap_fdatawrite_range mm/filemap.c:423 [inline]
file_write_and_wait_range+0x20f/0x300 mm/filemap.c:781
__generic_file_fsync+0x72/0x190 fs/libfs.c:1132
generic_file_fsync+0x73/0xf0 fs/libfs.c:1173
generic_write_sync include/linux/fs.h:2452 [inline]
udf_file_write_iter+0x55b/0x660 fs/udf/file.c:126
call_write_iter include/linux/fs.h:1851 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7b2/0xbb0 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f21d148c0f9
RSP: 002b:00007f21d2139168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f21d15abf80 RCX: 00007f21d148c0f9
RDX: 000000000208e24b RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f21d14e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc51923eff R14: 00007f21d2139300 R15: 0000000000022000
INFO: task syz-executor.4:28750 blocked for more than 145 seconds.
Not tainted 6.2.0-syzkaller-10217-ga93e884edf61 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26504 pid:28750 ppid:5111 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x17d8/0x4990 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
io_schedule+0x8c/0x100 kernel/sched/core.c:8884
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301
folio_wait_writeback+0xec/0x1f0 mm/page-writeback.c:3127
migrate_folio_unmap mm/migrate.c:1192 [inline]
migrate_pages_batch mm/migrate.c:1685 [inline]
migrate_pages+0x2d50/0x6610 mm/migrate.c:1973
do_mbind mm/mempolicy.c:1338 [inline]
kernel_mbind mm/mempolicy.c:1485 [inline]
__do_sys_mbind mm/mempolicy.c:1559 [inline]
__se_sys_mbind+0x75a/0x9c0 mm/mempolicy.c:1555
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f21d148c0f9
RSP: 002b:00007f21d2118168 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f21d15ac050 RCX: 00007f21d148c0f9
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020001000
RBP: 00007f21d14e7ae9 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc51923eff R14: 00007f21d2118300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d127cb0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d1284b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8d127ae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4743:
#0: ffff88802c549098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
2 locks held by kworker/1:0/10509:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77f/0x13a0
#1: ffffc90014bd7d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x13a0 kernel/workqueue.c:2365
3 locks held by kworker/u4:7/11997:
#0: ffff88801759b138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77f/0x13a0
#1: ffffc90004befd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x13a0 kernel/workqueue.c:2365
#2: ffff888079ce80e0 (&type->s_umount_key#100){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:414
3 locks held by kworker/1:15/15293:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x13a0
#1: ffffc900033c7d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x13a0 kernel/workqueue.c:2365
#2: ffffffff8d12d1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#2: ffffffff8d12d1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:989
3 locks held by kworker/1:18/20229:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77f/0x13a0
#1: ffffc90007fffd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x13a0 kernel/workqueue.c:2365
#2: ffffffff8d12d1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#2: ffffffff8d12d1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:989
2 locks held by kworker/u4:10/26224:
1 lock held by syz-executor.4/28721:
#0: ffff8880767d6498 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff8880767d6498 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1358 [inline]
#0: ffff8880767d6498 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1498 [inline]
#0: ffff8880767d6498 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x558/0x8a0 arch/x86/mm/fault.c:1554
2 locks held by syz-executor.4/28728:
#0: ffff8880205d0fe8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x254/0x2f0 fs/file.c:1046
#1: ffff888079ce8460 (sb_writers#26){.+.+}-{0:0}, at: vfs_write+0x26d/0xbb0 fs/read_write.c:580
1 lock held by syz-executor.4/28750:
#0: ffff8880767d6498 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff8880767d6498 (&mm->mmap_lock){++++}-{3:3}, at: do_mbind mm/mempolicy.c:1312 [inline]
#0: ffff8880767d6498 (&mm->mmap_lock){++++}-{3:3}, at: kernel_mbind mm/mempolicy.c:1485 [inline]
#0: ffff8880767d6498 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_mbind mm/mempolicy.c:1559 [inline]
#0: ffff8880767d6498 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_mbind+0x47d/0x9c0 mm/mempolicy.c:1555
1 lock held by syz-executor.2/32013:
#0: ffffffff8d12d080 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x5f0 kernel/rcu/tree.c:3945
1 lock held by syz-executor.5/32036:
#0: ffffffff8d12d080 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x5f0 kernel/rcu/tree.c:3945
1 lock held by syz-executor.3/32043:
#0: ffffffff8d12d080 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x5f0 kernel/rcu/tree.c:3945
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-syzkaller-10217-ga93e884edf61 #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+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e5/0x560 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x1b4/0x410 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+0x1024/0x1070 kernel/hung_task.c:379
kthread+0x270/0x300 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: 5211 Comm: syz-fuzzer Not tainted 6.2.0-syzkaller-10217-ga93e884edf61 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
RIP: 0033:0x40cb36
Code: 00 e9 07 02 00 00 48 3d f8 03 00 00 77 23 4c 8d 50 07 49 c1 ea 03 49 81 fa 81 00 00 00 0f 83 d6 04 00 00 4c 8d 1d 8a c9 d5 00 <47> 0f b6 14 1a eb 24 4c 8d 90 7f fc ff ff 49 c1 ea 07 49 81 fa f9
RSP: 002b:000000c017720c80 EFLAGS: 00000283
RAX: 0000000000000030 RBX: 0000000000a3a520 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 000000c026e6d000 RDI: 0000000000000000
RBP: 000000c017720cf0 R08: 00007f5d5f1cb5b8 R09: 000000000132f300
R10: 0000000000000006 R11: 00000000011694c0 R12: 0000000000000000
R13: 0000000000203007 R14: 000000c0000001a0 R15: 00007f5d36a16c7b
FS: 000000c026e6d090 GS: 0000000000000000