INFO: task syz-executor.0:7533 blocked for more than 143 seconds.
Not tainted 6.9.0-rc7-syzkaller-00188-gba16c1cf11c9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:22616 pid:7533 tgid:7532 ppid:6387 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1796/0x4a00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
__wait_on_freeing_inode fs/inode.c:2246 [inline]
find_inode_fast+0x31a/0x450 fs/inode.c:939
iget_locked+0xb8/0x850 fs/inode.c:1267
__ext4_iget+0x264/0x3ff0 fs/ext4/inode.c:4689
ext4_xattr_inode_cache_find fs/ext4/xattr.c:1542 [inline]
ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1581 [inline]
ext4_xattr_set_entry+0xeb6/0x4330 fs/ext4/xattr.c:1718
ext4_xattr_block_set+0xb15/0x3480 fs/ext4/xattr.c:2037
ext4_xattr_move_to_block fs/ext4/xattr.c:2654 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2729 [inline]
ext4_expand_extra_isize_ea+0x12d7/0x1cf0 fs/ext4/xattr.c:2821
__ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5789
ext4_try_to_expand_extra_isize fs/ext4/inode.c:5832 [inline]
__ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5910
ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:5942
__mark_inode_dirty+0x325/0xe20 fs/fs-writeback.c:2477
generic_update_time fs/inode.c:1907 [inline]
inode_update_time fs/inode.c:1920 [inline]
touch_atime+0x42c/0x670 fs/inode.c:1992
file_accessed include/linux/fs.h:2459 [inline]
filemap_read+0xdc5/0xfa0 mm/filemap.c:2669
__kernel_read+0x5c8/0xab0 fs/read_write.c:434
prepare_binprm fs/exec.c:1713 [inline]
search_binary_handler fs/exec.c:1762 [inline]
exec_binprm fs/exec.c:1820 [inline]
bprm_execve+0xa2b/0x17c0 fs/exec.c:1872
do_execveat_common+0x553/0x700 fs/exec.c:1979
do_execve fs/exec.c:2053 [inline]
__do_sys_execve fs/exec.c:2129 [inline]
__se_sys_execve fs/exec.c:2124 [inline]
__x64_sys_execve+0x92/0xb0 fs/exec.c:2124
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5d7c27dd69
RSP: 002b:00007f5d7cf0a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00007f5d7c3abf80 RCX: 00007f5d7c27dd69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f5d7c2ca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5d7c3abf80 R15: 00007fff6a9d71c8
INFO: task syz-executor.0:7543 blocked for more than 144 seconds.
Not tainted 6.9.0-rc7-syzkaller-00188-gba16c1cf11c9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:22072 pid:7543 tgid:7532 ppid:6387 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1796/0x4a00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
mb_cache_entry_wait_unused+0x166/0x250 fs/mbcache.c:148
ext4_evict_ea_inode+0x14a/0x2f0 fs/ext4/xattr.c:480
ext4_evict_inode+0x194/0xf50 fs/ext4/inode.c:180
evict+0x2a8/0x630 fs/inode.c:667
ext4_xattr_inode_array_free+0x7b/0x100 fs/ext4/xattr.c:3015
ext4_evict_inode+0xc63/0xf50 fs/ext4/inode.c:307
evict+0x2a8/0x630 fs/inode.c:667
do_unlinkat+0x512/0x830 fs/namei.c:4406
__do_sys_unlink fs/namei.c:4447 [inline]
__se_sys_unlink fs/namei.c:4445 [inline]
__x64_sys_unlink+0x49/0x60 fs/namei.c:4445
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5d7c27dd69
RSP: 002b:00007f5d7bdff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f5d7c3ac050 RCX: 00007f5d7c27dd69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5d7c2ca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f5d7c3ac050 R15: 00007fff6a9d71c8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4824:
#0: ffff88807b4a00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f0e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
5 locks held by kworker/0:6/5137:
1 lock held by syz-executor.3/7123:
2 locks held by syz-executor.1/7178:
#0: ffff88807b530420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88807b530610 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1664 [inline]
#1: ffff88807b530610 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1847 [inline]
#1: ffff88807b530610 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x2f4/0xf50 fs/ext4/inode.c:212
3 locks held by syz-executor.0/7533:
#0: ffff88802b52adc8 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: prepare_bprm_creds fs/exec.c:1494 [inline]
#0: ffff88802b52adc8 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: bprm_execve+0xd1/0x17c0 fs/exec.c:1852
#1: ffff88805d114420 (sb_writers#4){.+.+}-{0:0}, at: file_accessed include/linux/fs.h:2459 [inline]
#1: ffff88805d114420 (sb_writers#4){.+.+}-{0:0}, at: filemap_read+0xdc5/0xfa0 mm/filemap.c:2669
#2: ffff88805d526ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline]
#2: ffff88805d526ec8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5829 [inline]
#2: ffff88805d526ec8 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x491/0x880 fs/ext4/inode.c:5910
1 lock held by syz-executor.0/7543:
#0: ffff88805d114420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
1 lock held by syz-executor.4/7538:
#0: ffffffff8e33a138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#0: ffffffff8e33a138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x463/0x820 kernel/rcu/tree_exp.h:939
2 locks held by syz-executor.0/8130:
#0: ffff88807b530420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880621f4a00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:830 [inline]
#1: ffff8880621f4a00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_rmdir+0x263/0x580 fs/namei.c:4253
2 locks held by kworker/u8:0/10014:
#0: ffff88801ab3c148 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff88801ab3c148 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc900032a7d00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc900032a7d00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
1 lock held by syz-executor.2/10044:
#0: ffffffff8e380b08 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register_prio_may_exist+0xbb/0x190 kernel/tracepoint.c:478
2 locks held by syz-executor.3/10045:
#0: ffff8880b953e658 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9528948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
2 locks held by syz-executor.3/10046:
#0: ffff88807b530420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff888062228400 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#1: ffff888062228400 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline]
#1: ffff888062228400 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7d3/0x3240 fs/namei.c:3796
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc7-syzkaller-00188-gba16c1cf11c9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f0/0x390 kernel/kthread.c:388
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 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc7-syzkaller-00188-gba16c1cf11c9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:4252 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x87/0x120 kernel/rcu/tree.c:4293
Code: 3c 30 00 74 08 48 89 df e8 76 b8 7a 00 48 8b 03 48 8d 98 40 f5 03 00 48 8d b8 60 f5 03 00 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <74> 05 e8 52 b8 7a 00 4c 8b 7b 20 48 83 c3 18 48 89 d8 48 c1 e8 03
RSP: 0018:ffffc90000007a70 EFLAGS: 00000046
RAX: 1ffff11017287eac RBX: ffff8880b943f540 RCX: 0000000080010003
RDX: dffffc0000000000 RSI: ffffffff8c1eae00 RDI: ffff8880b943f560
RBP: ffffc90000007bf0 R08: ffffffff92efe507 R09: 1ffffffff25dfca0
R10: dffffc0000000000 R11: fffffbfff25dfca1 R12: ffff88801bbeda00
R13: ffffffff816a5d75 R14: dffffc0000000000 R15: ffff8880162ba400
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200000c0 CR3: 000000002f4a4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
rcu_read_lock_held+0x1e/0x50 kernel/rcu/update.c:349
select_task_rq_fair+0x491/0x3b40 kernel/sched/fair.c:8189
select_task_rq kernel/sched/core.c:3637 [inline]
try_to_wake_up+0x648/0x1470 kernel/sched/core.c:4363
hrtimer_wakeup+0x62/0x80 kernel/time/hrtimer.c:1946
__run_hrtimer kernel/time/hrtimer.c:1692 [inline]
__hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 80 d3 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d f5 b2 b0 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007ca8 EFLAGS: 00000246
RAX: ffffffff8e0946c0 RBX: ffff88801caf0064 RCX: 00000000000723c9
RDX: 0000000000000001 RSI: ffff88801caf0000 RDI: ffff88801caf0064
RBP: 000000000003a438 R08: ffff8880b9437ccb R09: 1ffff11017286f99
R10: dffffc0000000000 R11: ffffffff8b77c2a0 R12: ffff888018763800
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eab1800
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:332
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430
rest_init+0x2dc/0x300 init/main.c:739
start_kernel+0x47a/0x500 init/main.c:1081
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147