INFO: task syz-executor.3:20688 blocked for more than 144 seconds.
Not tainted 6.6.0-rc2-syzkaller-00244-g27bbf45eae9c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25424 pid:20688 ppid:5075 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x5a10 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
io_schedule+0xbe/0x130 kernel/sched/core.c:9026
folio_wait_bit_common+0x3dc/0x9c0 mm/filemap.c:1301
folio_lock include/linux/pagemap.h:1042 [inline]
clean_bdev_aliases+0x56b/0x610 fs/buffer.c:1725
clean_bdev_bh_alias include/linux/buffer_head.h:222 [inline]
__block_write_begin_int+0x8d6/0x1470 fs/buffer.c:2115
iomap_write_begin+0x5be/0x17b0 fs/iomap/buffered-io.c:772
iomap_write_iter fs/iomap/buffered-io.c:907 [inline]
iomap_file_buffered_write+0x3d6/0x9a0 fs/iomap/buffered-io.c:968
blkdev_buffered_write block/fops.c:634 [inline]
blkdev_write_iter+0x4f5/0xc90 block/fops.c:684
call_write_iter include/linux/fs.h:1956 [inline]
do_iter_readv_writev+0x21e/0x3c0 fs/read_write.c:735
do_iter_write+0x17f/0x830 fs/read_write.c:860
vfs_iter_write+0x7a/0xb0 fs/read_write.c:901
iter_file_splice_write+0x698/0xbf0 fs/splice.c:736
do_splice_from fs/splice.c:933 [inline]
direct_splice_actor+0x118/0x180 fs/splice.c:1142
splice_direct_to_actor+0x347/0xa30 fs/splice.c:1088
do_splice_direct+0x1af/0x280 fs/splice.c:1194
do_sendfile+0xb88/0x1390 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64 fs/read_write.c:1308 [inline]
__x64_sys_sendfile64+0x1d6/0x220 fs/read_write.c:1308
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7feaae47cae9
RSP: 002b:00007feaaf2250c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007feaae59c050 RCX: 00007feaae47cae9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007feaae4c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0100000000000042 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007feaae59c050 R15: 00007ffcf708ec18
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8cbab2e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/4793:
#0: ffff88814a9020a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206
1 lock held by syz-fuzzer/5196:
#0: ffff8880b993c718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558
2 locks held by kworker/1:7/5140:
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc900048ffd80 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
1 lock held by syz-executor.2/11688:
4 locks held by kworker/u4:3/19000:
2 locks held by syz-executor.1/21928:
#0: ffffffff8cc1b948 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register_prio_may_exist+0x9c/0x100 kernel/tracepoint.c:478
#1: ffffffff8cbb6bb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#1: ffffffff8cbb6bb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x69e/0x7e0 kernel/rcu/tree_exp.h:992
1 lock held by syz-executor.3/21932:
#0: ffffffff8cc1b948 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register_prio_may_exist+0x9c/0x100 kernel/tracepoint.c:478
1 lock held by syz-executor.4/21953:
#0: ffffffff8cc1b948 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register_prio_may_exist+0x9c/0x100 kernel/tracepoint.c:478
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc2-syzkaller-00244-g27bbf45eae9c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5140 Comm: kworker/1:7 Not tainted 6.6.0-rc2-syzkaller-00244-g27bbf45eae9c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: events cfg80211_wiphy_work
RIP: 0010:native_apic_mem_write+0xc/0x10 arch/x86/include/asm/apic.h:95
Code: bf 30 08 00 00 e8 24 d2 1c 03 48 89 d8 5b c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 f3 0f 1e fa 89 ff 89 b7 00 c0 5f ff 0f 1f 00 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 53 89 fb 48
RSP: 0018:ffffc900001f0128 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffff8880b9928240 RCX: 0000000000000020
RDX: 1ffff11017325049 RSI: 000000000000154d RDI: 0000000000000380
RBP: 000000000000154d R08: 0000000000000005 R09: 000000000000003f
R10: 0000000000000020 R11: 0000000000001000 R12: 0000000000000000
R13: 0000000000000020 R14: 0000000000000000 R15: 0000015bc69d2beb
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01c1f9000 CR3: 0000000073180000 CR4: 0000000000350ee0
Call Trace:
apic_write arch/x86/include/asm/apic.h:402 [inline]
lapic_next_event+0x10/0x20 arch/x86/kernel/apic/apic.c:446
clockevents_program_event+0x262/0x370 kernel/time/clockevents.c:334
tick_program_event+0xa5/0x130 kernel/time/tick-oneshot.c:44
hrtimer_interrupt+0x36d/0x800 kernel/time/hrtimer.c:1827
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
__sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
sysvec_apic_timer_interrupt+0x42/0xc0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:unwind_next_frame+0x5c0/0x2390 arch/x86/kernel/unwind_orc.c:505
Code: 85 c0 49 89 c4 0f 84 99 fd ff ff e8 1a 79 4d 00 4d 8d 6c 24 05 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04 02 <4c> 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 1d 19 00 00 45 0f b6 74
RSP: 0018:ffffc900001f0328 EFLAGS: 00000217
RAX: 0000000000000000 RBX: ffffc900001f03a8 RCX: 0000000000000100
RDX: 1ffffffff1fe4b81 RSI: ffffffff813a4bd6 RDI: 0000000000000006
RBP: 0000000000000001 R08: 0000000000000006 R09: ffffffff89b64dbc
R10: ffffffff89b64a35 R11: dffffc0000000000 R12: ffffffff8ff25c0a
R13: ffffffff8ff25c0f R14: 00000000001b0115 R15: ffffc900001f03dd
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:128
__set_page_owner+0x1f/0x60 mm/page_owner.c:192
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170
__alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426
__alloc_pages_node include/linux/gfp.h:237 [inline]
alloc_pages_node include/linux/gfp.h:260 [inline]
page_frag_alloc_1k net/core/skbuff.c:235 [inline]
__napi_alloc_skb+0x4d2/0x6f0 net/core/skbuff.c:816
napi_alloc_skb include/linux/skbuff.h:3282 [inline]
page_to_skb+0x150/0xac0 drivers/net/virtio_net.c:540
receive_mergeable drivers/net/virtio_net.c:1651 [inline]
receive_buf+0x11bc/0x52b0 drivers/net/virtio_net.c:1772
virtnet_receive drivers/net/virtio_net.c:2076 [inline]
virtnet_poll+0x9cb/0x1630 drivers/net/virtio_net.c:2148
__napi_poll.constprop.0+0xb4/0x530 net/core/dev.c:6527
napi_poll net/core/dev.c:6594 [inline]
net_rx_action+0x956/0xe90 net/core/dev.c:6727
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
common_interrupt+0xae/0xd0 arch/x86/kernel/irq.c:247
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:636
RIP: 0010:kcov_remote_start+0x3f8/0x6c0 kernel/kcov.c:923
Code: 8e e8 7c 23 cc 02 e9 4a ff ff ff e8 e2 a9 06 00 e9 95 fc ff ff e8 68 a9 06 00 9c 58 f6 c4 02 0f 85 99 02 00 00 fb 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 be 02 00 00 00 4c 89 e7 e8 f0 36
RSP: 0018:ffffc900048ffc08 EFLAGS: 00000282
RAX: 0000000000000006 RBX: ffff8880b992c528 RCX: 1ffffffff23433b0
RDX: 0000000000000000 RSI: ffffffff8a8cab20 RDI: ffffffff8ae92e60
RBP: ffff888014ffbb80 R08: 0000000000000001 R09: fffffbfff233dddd
R10: ffffffff919eeeef R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000200 R14: 0000000000000000 R15: ffff888014ffbb80
kcov_remote_start_common include/linux/kcov.h:48 [inline]
ieee80211_iface_work+0x39d/0xd40 net/mac80211/iface.c:1653
cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:435
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304