INFO: task syz.4.31:5889 blocked for more than 143 seconds.
Not tainted 6.11.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.31 state:D stack:26336 pid:5889 tgid:5862 ppid:5496 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
percpu_rwsem_wait+0x3c2/0x450 kernel/locking/percpu-rwsem.c:162
__percpu_down_read+0xee/0x130 kernel/locking/percpu-rwsem.c:177
percpu_down_read include/linux/percpu-rwsem.h:65 [inline]
__sb_start_write include/linux/fs.h:1675 [inline]
sb_start_write include/linux/fs.h:1811 [inline]
file_start_write+0x1fd/0x250 include/linux/fs.h:2881
direct_splice_actor+0x49/0x220 fs/splice.c:1163
splice_direct_to_actor+0x58e/0xc90 fs/splice.c:1108
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x28c/0x3e0 fs/splice.c:1233
do_sendfile+0x56d/0xe20 fs/read_write.c:1295
__do_sys_sendfile64 fs/read_write.c:1362 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1348
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2ba579e79
RSP: 002b:00007fa2bb2d7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fa2ba716058 RCX: 00007fa2ba579e79
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000008
RBP: 00007fa2ba5e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000100800001 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa2ba716058 R15: 00007ffe27b8d5a8
INFO: task syz.4.31:5891 blocked for more than 144 seconds.
Not tainted 6.11.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.31 state:D stack:27392 pid:5891 tgid:5862 ppid:5496 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
percpu_rwsem_wait+0x3c2/0x450 kernel/locking/percpu-rwsem.c:162
__percpu_down_read+0xee/0x130 kernel/locking/percpu-rwsem.c:177
percpu_down_read include/linux/percpu-rwsem.h:65 [inline]
__sb_start_write include/linux/fs.h:1675 [inline]
sb_start_write+0x184/0x1c0 include/linux/fs.h:1811
mnt_want_write_file+0x61/0x200 fs/namespace.c:559
f2fs_ioc_start_atomic_write+0x153/0xaa0 fs/f2fs/file.c:2132
__f2fs_ioctl+0x1b4d/0xb650
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2ba579e79
RSP: 002b:00007fa2bb2b6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa2ba716130 RCX: 00007fa2ba579e79
RDX: 0000000000000000 RSI: 000000000000f501 RDI: 0000000000000004
RBP: 00007fa2ba5e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa2ba716130 R15: 00007ffe27b8d5a8
INFO: task syz.4.31:5892 blocked for more than 144 seconds.
Not tainted 6.11.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.31 state:D stack:27392 pid:5892 tgid:5862 ppid:5496 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
percpu_rwsem_wait+0x3c2/0x450 kernel/locking/percpu-rwsem.c:162
__percpu_down_read+0xee/0x130 kernel/locking/percpu-rwsem.c:177
percpu_down_read include/linux/percpu-rwsem.h:65 [inline]
__sb_start_write include/linux/fs.h:1675 [inline]
sb_start_write+0x184/0x1c0 include/linux/fs.h:1811
mnt_want_write+0x3f/0x90 fs/namespace.c:515
open_last_lookups fs/namei.c:3636 [inline]
path_openat+0x779/0x3470 fs/namei.c:3883
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_open fs/open.c:1439 [inline]
__se_sys_open fs/open.c:1435 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1435
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2ba579e79
RSP: 002b:00007fa2bb295038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fa2ba716208 RCX: 00007fa2ba579e79
RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000080
RBP: 00007fa2ba5e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa2ba716208 R15: 00007ffe27b8d5a8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by getty/4966:
#0: ffff88802af950a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.4.31/5889:
#0: ffff88802d7e0420 (sb_writers#22){++++}-{0:0}, at: direct_splice_actor+0x49/0x220 fs/splice.c:1163
1 lock held by syz.4.31/5891:
#0: ffff88802d7e0420 (sb_writers#22){++++}-{0:0}, at: mnt_want_write_file+0x61/0x200 fs/namespace.c:559
1 lock held by syz.4.31/5892:
#0: ffff88802d7e0420 (sb_writers#22){++++}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
1 lock held by syz.1.75/6125:
#0: ffff88801faec420 (sb_writers#22){++++}-{0:0}, at: direct_splice_actor+0x49/0x220 fs/splice.c:1163
1 lock held by syz.1.75/6126:
#0: ffff88801faec420 (sb_writers#22){++++}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
1 lock held by syz.0.146/6817:
#0: ffff88805cd4e420 (sb_writers#22){++++}-{0:0}, at: mnt_want_write_file+0x61/0x200 fs/namespace.c:559
1 lock held by syz.0.146/6818:
#0: ffff88805cd4e420 (sb_writers#22){++++}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
1 lock held by syz.2.341/7996:
#0: ffff888077d94420 (sb_writers#22){++++}-{0:0}, at: mnt_want_write_file+0x61/0x200 fs/namespace.c:559
1 lock held by syz.2.341/7997:
#0: ffff888077d94420 (sb_writers#22){++++}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
1 lock held by syz.3.396/8325:
1 lock held by syz.2.397/8315:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6425 Comm: kworker/u8:9 Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:separate_irq_context kernel/locking/lockdep.c:4627 [inline]
RIP: 0010:__lock_acquire+0xd70/0x2040 kernel/locking/lockdep.c:5126
Code: 41 8b 5d 00 48 85 db 74 58 83 fb 31 0f 83 1a 11 00 00 48 8d 04 9b 48 8b 0c 24 48 8d 5c c1 f8 48 89 d8 48 c1 e8 03 0f b6 04 38 <84> c0 0f 85 57 0d 00 00 8b 1b 48 8b 44 24 20 0f b6 04 38 84 c0 0f
RSP: 0018:ffffc90002dcf750 EFLAGS: 00000806
RAX: 0000000000000000 RBX: ffff8880254b8b50 RCX: ffff8880254b8ae0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: ffff8880254b8b58 R08: ffffffff934f7937 R09: 1ffffffff269ef26
R10: dffffc0000000000 R11: fffffbfff269ef27 R12: 0000000000000000
R13: ffff8880254b8ad8 R14: ed5c806bb69518d5 R15: ffff8880254b8b78
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac89cbb000 CR3: 000000004a99a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
ieee80211_ibss_work+0xdc/0x14c0 net/mac80211/ibss.c:1653
cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244