INFO: task syz-executor.3:19792 blocked for more than 143 seconds.
Not tainted 6.6.0-rc3-syzkaller-00038-g0e945134b680 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:26000 pid:19792 ppid:5092 flags:0x20004006
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+0x8d6/0x14d0 fs/buffer.c:2118
iomap_write_begin+0x5be/0x1800 fs/iomap/buffered-io.c:774
iomap_write_iter fs/iomap/buffered-io.c:909 [inline]
iomap_file_buffered_write+0x3d6/0x9a0 fs/iomap/buffered-io.c:970
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_compat_sys_sendfile fs/read_write.c:1343 [inline]
__se_compat_sys_sendfile fs/read_write.c:1326 [inline]
__ia32_compat_sys_sendfile+0x1e3/0x220 fs/read_write.c:1326
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f17579
RSP: 002b:00000000f7f125ac EFLAGS: 00000292 ORIG_RAX: 00000000000000bb
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000003
RDX: 0000000000000000 RSI: 0000000024002de8 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
2 locks held by kworker/u4:1/12:
#0: ffff8880b983c718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558
#1: ffff8880b9828888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:999
1 lock held by khungtaskd/29:
#0: ffffffff8cbab2a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8cbab2a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8cbab2a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/4801:
#0: ffff888025fa40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206
3 locks held by syz-executor.2/5094:
4 locks held by kworker/u4:17/11408:
3 locks held by kworker/u4:0/23571:
3 locks held by syz-executor.0/23576:
2 locks held by syz-executor.3/23593:
3 locks held by syz-executor.2/23598:
#0: ffff8880b983c718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558
#1: ffff8880b9828888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:999
#2: ffff8880b983c718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc3-syzkaller-00038-g0e945134b680 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 13364 Comm: kworker/u4:20 Not tainted 6.6.0-rc3-syzkaller-00038-g0e945134b680 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Workqueue: bat_events batadv_tt_purge
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5753 [inline]
RIP: 0010:lock_acquire+0x1a1/0x510 kernel/locking/lockdep.c:5718
Code: ea 65 ff 05 d1 f6 99 7e 6a 00 25 00 02 00 00 4c 89 f7 6a 00 41 0f 94 c1 48 89 c5 6a 00 45 0f b6 c9 ff b4 24 00 01 00 00 41 57 <8b> 4c 24 2c 8b 74 24 28 e8 f2 8c ff ff 48 c7 c7 a0 ad 8c 8a 48 83
RSP: 0018:ffffc90000007ac8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff92000000f60 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8a8cad60 RDI: ffffffff8cc159f8
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8ece5217 R11: ffffffff8187c7a7 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff8cc159f8 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 000000005e9d9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
kcov_remote_start+0x16d/0x6c0 kernel/kcov.c:874
kcov_remote_start_common include/linux/kcov.h:48 [inline]
ieee80211_rx_list+0x470/0x2dd0 net/mac80211/rx.c:5377
ieee80211_rx_napi+0xdd/0x400 net/mac80211/rx.c:5418
ieee80211_rx include/net/mac80211.h:4952 [inline]
ieee80211_tasklet_handler+0xd2/0x130 net/mac80211/main.c:316
tasklet_action_common.constprop.0+0x242/0x3d0 kernel/softirq.c:780
__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
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:batadv_tt_local_purge+0x10c/0x3c0 net/batman-adv/translation-table.c:1351
Code: 89 c1 49 89 c6 48 c1 e9 03 48 89 54 24 40 4c 01 f9 48 89 4c 24 28 48 89 d1 48 c1 e9 03 4c 01 f9 48 89 4c 24 30 e8 e4 c8 7c f7 <48> 8b 44 24 28 80 38 00 0f 85 5d 02 00 00 49 8b 06 44 89 e3 48 8d
RSP: 0018:ffffc90014917b08 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000400 RCX: 0000000000000000
RDX: ffff88801c855940 RSI: ffffffff8a0afddc RDI: 0000000000000004
RBP: ffff888042210fc8 R08: 0000000000000004 R09: 0000000000000400
R10: 00000000000001fa R11: 0000000000000000 R12: 00000000000001fa
R13: ffff888042257e40 R14: ffff888140aea100 R15: dffffc0000000000
batadv_tt_purge+0x8b/0xbb0 net/batman-adv/translation-table.c:3560
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