INFO: task syz-executor.2:12873 blocked for more than 143 seconds.
Not tainted 6.3.0-rc1-syzkaller-00274-g134231664868 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27064 pid:12873 ppid:5109 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x179d/0x4690 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+0x54c/0x890 arch/x86/mm/fault.c:1554
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f4c0ac2bd79
RSP: 002b:00007ffed55305e0 EFLAGS: 00010246
RAX: 0000000020002480 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005555561592e8
RBP: 00007ffed55306d8 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f4c0a801c80 R11: 000000000005c762 R12: 00000000001d418c
R13: 00007ffed5530700 R14: 00007ffed5530720 R15: 0000000000000032
INFO: task syz-executor.2:12881 blocked for more than 143 seconds.
Not tainted 6.3.0-rc1-syzkaller-00274-g134231664868 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24808 pid:12881 ppid:5109 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x179d/0x4690 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+0x570/0x1390 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: 0033:0x7f4c0ac8c0f9
RSP: 002b:00007f4c0ba31168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4c0adabf80 RCX: 00007f4c0ac8c0f9
RDX: 000000000208e24b RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f4c0ace7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed553059f R14: 00007f4c0ba31300 R15: 0000000000022000
INFO: task syz-executor.2:12897 blocked for more than 144 seconds.
Not tainted 6.3.0-rc1-syzkaller-00274-g134231664868 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26264 pid:12897 ppid:5109 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x179d/0x4690 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:1198 [inline]
migrate_pages_batch mm/migrate.c:1691 [inline]
migrate_pages+0x2b60/0x61f0 mm/migrate.c:1979
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: 0033:0x7f4c0ac8c0f9
RSP: 002b:00007f4c0ba10168 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f4c0adac050 RCX: 00007f4c0ac8c0f9
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020001000
RBP: 00007f4c0ace7ae9 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffed553059f R14: 00007f4c0ba10300 R15: 0000000000022000
Showing all locks held in the system:
2 locks held by kworker/u4:0/9:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25f30 (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: ffffffff8cf26730 (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: ffffffff8cf25d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4748:
#0: ffff88802890d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:16/5406:
#0: ffff888144b6c138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x788/0x1280 kernel/workqueue.c:2363
#1: ffffc90005397d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7d2/0x1280 kernel/workqueue.c:2365
#2: ffff888075d420e0 (&type->s_umount_key#97){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:414
2 locks held by kworker/1:3/10443:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x788/0x1280 kernel/workqueue.c:2363
#1: ffffc9001525fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d2/0x1280 kernel/workqueue.c:2365
1 lock held by syz-executor.2/12873:
#0: ffff88802bf18198 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88802bf18198 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1358 [inline]
#0: ffff88802bf18198 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1498 [inline]
#0: ffff88802bf18198 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x54c/0x890 arch/x86/mm/fault.c:1554
2 locks held by syz-executor.2/12881:
#0: ffff88803e6725e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x254/0x2f0 fs/file.c:1047
#1: ffff888075d42460 (sb_writers#26){.+.+}-{0:0}, at: vfs_write+0x26d/0xbb0 fs/read_write.c:580
1 lock held by syz-executor.2/12897:
#0: ffff88802bf18198 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff88802bf18198 (&mm->mmap_lock){++++}-{3:3}, at: do_mbind mm/mempolicy.c:1312 [inline]
#0: ffff88802bf18198 (&mm->mmap_lock){++++}-{3:3}, at: kernel_mbind mm/mempolicy.c:1485 [inline]
#0: ffff88802bf18198 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_mbind mm/mempolicy.c:1559 [inline]
#0: ffff88802bf18198 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_mbind+0x47d/0x9c0 mm/mempolicy.c:1555
2 locks held by syz-executor.2/13277:
#0: ffffffff8e084b50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4af/0x790 net/core/net_namespace.c:486
#1: ffffffff8e090ee8 (rtnl_mutex){+.+.}-{3:3}, at: ppp_exit_net+0xe4/0x3b0 drivers/net/ppp/ppp_generic.c:1129
3 locks held by syz-executor.0/13265:
#0: ffffffff8e084b50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4af/0x790 net/core/net_namespace.c:486
#1: ffffffff8e090ee8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_delete_nets+0xcd/0x340 net/ipv4/ip_tunnel.c:1121
#2: ffffffff8cf2b238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#2: ffffffff8cf2b238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:989
2 locks held by syz-executor.5/13274:
#0: ffffffff8e084b50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4af/0x790 net/core/net_namespace.c:486
#1: ffffffff8cf2b100 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x540 kernel/rcu/tree.c:3945
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc1-syzkaller-00274-g134231664868 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 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+0xf9d/0xfe0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11505 Comm: kworker/u4:17 Not tainted 6.3.0-rc1-syzkaller-00274-g134231664868 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: phy4 ieee80211_iface_work
RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:105 [inline]
RIP: 0010:do_raw_spin_unlock+0xf5/0x8b0 kernel/locking/spinlock_debug.c:140
Code: 7e 39 c8 0f 85 c5 02 00 00 48 bd 00 00 00 00 00 fc ff df 41 80 3c 2c 00 74 08 4c 89 ef e8 b3 18 75 00 49 c7 45 00 ff ff ff ff <0f> b6 04 2b 84 c0 0f 85 c9 03 00 00 41 c7 06 ff ff ff ff 48 c7 c0
RSP: 0018:ffffc900168ef860 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff110173252b1 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880b9929580
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffed10173252b1
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110173252b2
R13: ffff8880b9929590 R14: ffff8880b9929588 R15: ffff8880b9929580
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020333030 CR3: 000000000cd30000 CR4: 00000000003506e0
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock_irqrestore+0x81/0x140 kernel/locking/spinlock.c:194
__mod_timer+0xb10/0xf40 kernel/time/timer.c:1134
ieee80211_sta_merge_ibss net/mac80211/ibss.c:1296 [inline]
ieee80211_ibss_work+0x48f/0x1490 net/mac80211/ibss.c:1708
process_one_work+0x90c/0x1280 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308