INFO: task syz-executor.2:14943 blocked for more than 143 seconds.
Not tainted 6.6.0-syzkaller-15029-gbe3ca57cfb77 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24744 pid:14943 tgid:14941 ppid:5102 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1960/0x4a80 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:812 [inline]
dir_relax_shared include/linux/fs.h:3437 [inline]
ext4_readdir+0x1d55/0x37e0 fs/ext4/dir.c:302
iterate_dir+0x1cd/0x540 fs/readdir.c:106
__do_sys_getdents64 fs/readdir.c:405 [inline]
__se_sys_getdents64+0x20d/0x4f0 fs/readdir.c:390
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f115847cae9
RSP: 002b:00007f11592bf0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007f115859bf80 RCX: 00007f115847cae9
RDX: 00000000000000d6 RSI: 0000000020000280 RDI: 0000000000000005
RBP: 00007f11584c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f115859bf80 R15: 00007ffd0f533bd8
INFO: task syz-executor.2:14962 blocked for more than 143 seconds.
Not tainted 6.6.0-syzkaller-15029-gbe3ca57cfb77 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26120 pid:14962 tgid:14941 ppid:5102 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1960/0x4a80 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:812 [inline]
dir_relax_shared include/linux/fs.h:3437 [inline]
ext4_readdir+0x1d55/0x37e0 fs/ext4/dir.c:302
iterate_dir+0x1cd/0x540 fs/readdir.c:106
__do_sys_getdents fs/readdir.c:322 [inline]
__se_sys_getdents+0x1ef/0x4c0 fs/readdir.c:307
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f115847cae9
RSP: 002b:00007f115929e0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f115859c050 RCX: 00007f115847cae9
RDX: 00000000000000c2 RSI: 00000000200049c0 RDI: 0000000000000007
RBP: 00007f11584c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f115859c050 R15: 00007ffd0f533bd8
INFO: task syz-executor.2:14968 blocked for more than 144 seconds.
Not tainted 6.6.0-syzkaller-15029-gbe3ca57cfb77 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28968 pid:14968 tgid:14941 ppid:5102 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1960/0x4a80 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:747
__fdget_pos+0x2b0/0x340 fs/file.c:1177
fdget_pos include/linux/file.h:74 [inline]
__do_sys_getdents fs/readdir.c:318 [inline]
__se_sys_getdents+0x1c3/0x4c0 fs/readdir.c:307
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f115847cae9
RSP: 002b:00007f115925c0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f115859c1f0 RCX: 00007f115847cae9
RDX: 00000000000000e8 RSI: 0000000020002600 RDI: 0000000000000007
RBP: 00007f11584c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f115859c1f0 R15: 00007ffd0f533bd8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92d0a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4809:
#0: ffff88814b3fd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015c72f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.2/14943:
#0: ffff88807c4f1c48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1177
#1: ffff88803f13ac00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#1: ffff88803f13ac00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: dir_relax_shared include/linux/fs.h:3437 [inline]
#1: ffff88803f13ac00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: ext4_readdir+0x1d55/0x37e0 fs/ext4/dir.c:302
2 locks held by syz-executor.2/14962:
#0: ffff888018f07248 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1177
#1: ffff88803f13ac00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#1: ffff88803f13ac00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: dir_relax_shared include/linux/fs.h:3437 [inline]
#1: ffff88803f13ac00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: ext4_readdir+0x1d55/0x37e0 fs/ext4/dir.c:302
1 lock held by syz-executor.2/14968:
#0: ffff888018f07248 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2b0/0x340 fs/file.c:1177
6 locks held by syz-executor.2/14973:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-syzkaller-15029-gbe3ca57cfb77 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
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+0x198/0x310 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+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4501 Comm: klogd Not tainted 6.6.0-syzkaller-15029-gbe3ca57cfb77 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:memset_orig+0x72/0xac arch/x86/lib/memset_64.S:89
Code: 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d8 0f 1f 84 00 00 00 00 00 89 d1 83 e1 38 74 14 c1 e9 03 66 0f 1f 44 00 00 ff c9 <48> 89 07 48 8d 7f 08 75 f5 83 e2 07 74 0a ff ca 88 07 48 8d 7f 01
RSP: 0018:ffffc9000313f978 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000004
RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc9000313fa20
RBP: ffffc9000313fad0 R08: ffffc9000313fa47 R09: 0000000000000000
R10: ffffc9000313fa20 R11: fffff52000627f49 R12: dffffc0000000000
R13: ffffffff8d808b00 R14: 0000000000000000 R15: 0000000000000030
FS: 00007f3986852380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005646e4a79040 CR3: 0000000018b5e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__mutex_lock_common kernel/locking/mutex.c:573 [inline]
__mutex_lock+0xb0/0xd60 kernel/locking/mutex.c:747
syslog_print+0x7d9/0x9b0 kernel/printk/printk.c:1628
do_syslog+0x505/0x890 kernel/printk/printk.c:1728
__do_sys_syslog kernel/printk/printk.c:1820 [inline]
__se_sys_syslog kernel/printk/printk.c:1818 [inline]
__x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1818
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f39869b3fa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd8335c388 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f3986b524a0 RCX: 00007f39869b3fa7
RDX: 00000000000003ff RSI: 00007f3986b524a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 6770b60ae6650665
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f3986b524a0
R13: 00007f3986b42212 R14: 00007f3986b524fb R15: 00007f3986b524fb