INFO: task kworker/u4:11:5271 blocked for more than 147 seconds.
Not tainted 6.2.0-syzkaller-10217-ga93e884edf61 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:11 state:D stack:21368 pid:5271 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:1)
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
__writeback_single_inode+0x1c4/0x15e0 fs/fs-writeback.c:1600
writeback_sb_inodes+0x92c/0x1360 fs/fs-writeback.c:1891
__writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:1962
wb_writeback+0x51c/0x1080 fs/fs-writeback.c:2067
wb_check_background_flush fs/fs-writeback.c:2133 [inline]
wb_do_writeback fs/fs-writeback.c:2221 [inline]
wb_workfn+0xd80/0x1100 fs/fs-writeback.c:2248
process_one_work+0x915/0x13a0 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
INFO: task syz-executor.1:29206 blocked for more than 147 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.1 state:D stack:26168 pid:29206 ppid:5091 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: 0033:0x7f8beec276f6
RSP: 002b:00007fff5a6ee438 EFLAGS: 00010287
RAX: 0000001b31128000 RBX: 00007f8beedac0e8 RCX: 0000001b31120000
RDX: 0000001b31128004 RSI: 0000001b31127310 RDI: 0000000062b71988
RBP: 0000000062b71988 R08: 0000001b31720000 R09: 0000000062b7198c
R10: 00007fff5a774080 R11: 000000000005f138 R12: 00007f8beeda0000
R13: 0000000000000001 R14: 0000000000003fea R15: ffffffff81cc48b1
INFO: task syz-executor.1:29209 blocked for more than 148 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.1 state:D stack:24552 pid:29209 ppid:5091 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
fat_file_fsync+0x7e/0x190 fs/fat/file.c:191
generic_write_sync include/linux/fs.h:2452 [inline]
generic_file_write_iter+0x2a1/0x310 mm/filemap.c:4090
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: 0033:0x7f8beec8c0f9
RSP: 002b:00007f8bef969168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8beedabf80 RCX: 00007f8beec8c0f9
RDX: 000000000208e24b RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f8beece7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff5a6ee49f R14: 00007f8bef969300 R15: 0000000000022000
INFO: task syz-executor.1:29219 blocked for more than 148 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.1 state:D stack:26504 pid:29219 ppid:5091 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]
exit_mm+0xd3/0x310 kernel/exit.c:539
do_exit+0x612/0x2290 kernel/exit.c:856
do_group_exit+0x206/0x2c0 kernel/exit.c:1019
get_signal+0x1701/0x17e0 kernel/signal.c:2859
arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x2e0 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8beec8c0f9
RSP: 002b:00007f8bef948218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f8beedac058 RCX: 00007f8beec8c0f9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8beedac058
RBP: 00007f8beedac050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8beedac05c
R13: 00007fff5a6ee49f R14: 00007f8bef948300 R15: 0000000000022000
INFO: task syz-executor.1:29220 blocked for more than 149 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.1 state:D stack:27064 pid:29220 ppid:5091 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: 0033:0x7f8beec8c0f9
RSP: 002b:00007f8bef927168 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f8beedac120 RCX: 00007f8beec8c0f9
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020001000
RBP: 00007f8beece7ae9 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff5a6ee49f R14: 00007f8bef927300 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/4748:
#0: ffff88802cc93098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:11/5271:
#0: ffff888144c7b138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77f/0x13a0
#1: ffffc90004fcfd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x13a0 kernel/workqueue.c:2365
#2: ffff88807b4080e0 (&type->s_umount_key#68){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:414
5 locks held by kworker/u4:27/11079:
#0: ffff888016612938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x77f/0x13a0
#1: ffffc900067b7d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7c6/0x13a0 kernel/workqueue.c:2365
#2: ffffffff8e284590 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf5/0xb80 net/core/net_namespace.c:575
#3: ffffffff8e290b08 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_delete_nets+0xcd/0x340 net/ipv4/ip_tunnel.c:1121
#4: ffffffff8d12d1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#4: ffffffff8d12d1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:989
2 locks held by kworker/u4:34/11100:
2 locks held by kworker/0:4/15219:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77f/0x13a0
#1: ffffc9001594fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x13a0 kernel/workqueue.c:2365
1 lock held by syz-executor.1/29206:
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1358 [inline]
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1498 [inline]
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x558/0x8a0 arch/x86/mm/fault.c:1554
2 locks held by syz-executor.1/29209:
#0: ffff88802b8e1268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x254/0x2f0 fs/file.c:1046
#1: ffff88807b408460 (sb_writers#27){.+.+}-{0:0}, at: vfs_write+0x26d/0xbb0 fs/read_write.c:580
1 lock held by syz-executor.1/29219:
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: exit_mm+0xd3/0x310 kernel/exit.c:539
1 lock held by syz-executor.1/29220:
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline]
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: do_mbind mm/mempolicy.c:1312 [inline]
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: kernel_mbind mm/mempolicy.c:1485 [inline]
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: __do_sys_mbind mm/mempolicy.c:1559 [inline]
#0: ffff88804939ed98 (&mm->mmap_lock){++++}-{3:3}, at: __se_sys_mbind+0x47d/0x9c0 mm/mempolicy.c:1555
2 locks held by syz-executor.1/30376:
#0: ffffffff8e284590 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4af/0x790 net/core/net_namespace.c:486
#1: ffffffff8e290b08 (rtnl_mutex){+.+.}-{3:3}, at: cangw_pernet_exit_batch+0x20/0x90 net/can/gw.c:1257
2 locks held by syz-executor.2/30381:
#0: ffffffff8e284590 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4af/0x790 net/core/net_namespace.c:486
#1: ffffffff8e290b08 (rtnl_mutex){+.+.}-{3:3}, at: cangw_pernet_exit_batch+0x20/0x90 net/can/gw.c:1257
2 locks held by syz-executor.4/30401:
#0: ffffffff8e284590 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4af/0x790 net/core/net_namespace.c:486
#1: ffffffff8e290b08 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_delete_nets+0xcd/0x340 net/ipv4/ip_tunnel.c:1121
=============================================
NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11100 Comm: kworker/u4:34 Not tainted 6.2.0-syzkaller-10217-ga93e884edf61 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Workqueue: phy13 ieee80211_iface_work
RIP: 0010:unwind_next_frame+0x19c5/0x22b0
Code: 89 f0 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 44 08 00 00 48 0f bf 03 48 8b 34 24 48 01 c6 49 8d 54 24 40 4c 89 e7 e8 eb 08 00 00 <84> c0 49 bc 00 00 00 00 00 fc ff df 0f 84 3c 01 00 00 48 8b 44 24
RSP: 0018:ffffc90008eb6f20 EFLAGS: 00000286
RAX: 1ffff920011d6e01 RBX: ffffffff8f78ff9e RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffc90008eb0000 RDI: ffffc90008eb7bd0
RBP: dffffc0000000000 R08: ffffc90008eb7bd0 R09: ffffc90008eb7050
R10: 0000000000000002 R11: ffff88802a899d40 R12: ffffc90008eb7000
R13: 1ffffffff1ef1ff4 R14: ffffffff8f78ff9f R15: 1ffff920011d6e01
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003f79000 CR3: 000000000cf30000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383
kasan_kmalloc include/linux/kasan.h:196 [inline]
__do_kmalloc_node mm/slab_common.c:967 [inline]
__kmalloc+0xb3/0x1a0 mm/slab_common.c:980
kmalloc include/linux/slab.h:584 [inline]
kzalloc include/linux/slab.h:720 [inline]
ieee802_11_parse_elems_full+0x112/0x2a40 net/mac80211/util.c:1606
ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2262 [inline]
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2269 [inline]
ieee80211_bss_info_update+0x994/0xf00 net/mac80211/scan.c:212
ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1a3c/0x2e80 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1583 [inline]
ieee80211_iface_work+0x7bd/0xd00 net/mac80211/iface.c:1637
process_one_work+0x915/0x13a0 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