INFO: task syz-executor.2:11375 blocked for more than 143 seconds.
Not tainted 6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28512 pid:11375 tgid:11365 ppid:7731 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
bfs_lookup+0x15c/0x2c0 fs/bfs/dir.c:136
__lookup_slow+0x24f/0x460 fs/namei.c:1692
lookup_slow fs/namei.c:1709 [inline]
walk_component+0x350/0x5b0 fs/namei.c:2004
link_path_walk.part.0.constprop.0+0x77f/0xcd0 fs/namei.c:2331
link_path_walk fs/namei.c:2256 [inline]
path_parentat+0xaa/0x1b0 fs/namei.c:2532
__filename_parentat+0x1f0/0x630 fs/namei.c:2556
filename_parentat fs/namei.c:2574 [inline]
filename_create+0xba/0x530 fs/namei.c:3873
do_mkdirat+0xab/0x3a0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4161 [inline]
__se_sys_mkdirat fs/namei.c:4159 [inline]
__x64_sys_mkdirat+0x114/0x170 fs/namei.c:4159
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efcdbc7c9a7
RSP: 002b:00007efcdb7ddef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007efcdb7ddf80 RCX: 00007efcdbc7c9a7
RDX: 00000000000001ff RSI: 0000000020000540 RDI: 00000000ffffff9c
RBP: 0000000020000500 R08: 0000000020000640 R09: 0000000000000000
R10: 0000000020000500 R11: 0000000000000246 R12: 0000000020000540
R13: 00007efcdb7ddf40 R14: 0000000000000000 R15: 0000000020000580
Showing all locks held in the system:
3 locks held by kworker/0:0/7:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3229
#1: ffffc900000c7d80 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3230
#2: ffffffff8f7805e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x1b/0x160 net/rfkill/core.c:182
4 locks held by kworker/0:1/8:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3229
#1: ffffc900000d7d80 ((rfkill_op_work).work){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3230
#2: ffffffff8f7805e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_epo+0x55/0x1d0 net/rfkill/core.c:462
#3: ffff888069c41060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_poweroff net/bluetooth/hci_core.c:949 [inline]
#3: ffff888069c41060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_rfkill_set_block+0x1a7/0x360 net/bluetooth/hci_core.c:976
1 lock held by khungtaskd/29:
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:3/45:
2 locks held by getty/4832:
#0: ffff88802a6e60a0 (&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+0xfc8/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.2/11369:
2 locks held by syz-executor.2/11375:
#0: ffff888077f9c690 (&type->i_mutex_dir_key#23){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff888077f9c690 (&type->i_mutex_dir_key#23){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
#0: ffff888077f9c690 (&type->i_mutex_dir_key#23){.+.+}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
#1: ffff8880292448d8 (&info->bfs_lock){+.+.}-{3:3}, at: bfs_lookup+0x15c/0x2c0 fs/bfs/dir.c:136
2 locks held by kworker/u8:0/11835:
#0: ffff88801b350948 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3229
#1: ffffc900037f7d80 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3230
2 locks held by kworker/u8:7/11836:
#0: ffff88801b350948 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3229
#1: ffffc90003807d80 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3230
1 lock held by syz-executor.3/12588:
#0: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#0: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x403/0x7a0 kernel/rcu/tree_exp.h:939
3 locks held by syz-executor.4/13307:
#0: ffff88805de70810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#0: ffff88805de70810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x270 net/socket.c:658
#1: ffff88802dc58e58 (sk_lock-AF_PHONET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1671 [inline]
#1: ffff88802dc58e58 (sk_lock-AF_PHONET){+.+.}-{0:0}, at: pep_sock_unhash+0x1c/0x3f0 net/phonet/pep.c:1325
#2: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#2: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x403/0x7a0 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.1/13295:
#0: ffff8880406b8400 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#0: ffff8880406b8400 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: do_lock_mount+0xb0/0x5b0 fs/namespace.c:2460
2 locks held by syz-executor.2/13297:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf86/0x1240 kernel/hung_task.c:380
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12588 Comm: syz-executor.3 Not tainted 6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:217 [inline]
RIP: 0010:unwind_next_frame+0x26b/0x23a0 arch/x86/kernel/unwind_orc.c:494
Code: 83 f8 19 00 00 e8 35 a9 50 00 45 89 ee 48 b8 00 00 00 00 00 fc ff df 4a 8d 3c b5 68 42 df 90 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 af d1 ab 00
RSP: 0018:ffffc900031f7588 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: ffffc900031f7608 RCX: ffffffff813d190d
RDX: 0000000000000000 RSI: ffffffff813d191b RDI: ffffffff9106ad40
RBP: 0000000000000001 R08: 0000000000000004 R09: 000000000009dab6
R10: 00000000000a0000 R11: 0000000000000004 R12: ffffffff8adab6de
R13: 000000000009dab6 R14: 000000000009dab6 R15: ffffc900031f763d
FS: 0000555588311480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f41aaed56c6 CR3: 00000000790a4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3798 [inline]
slab_alloc_node mm/slub.c:3845 [inline]
kmem_cache_alloc+0x136/0x320 mm/slub.c:3852
anon_vma_chain_alloc mm/rmap.c:142 [inline]
anon_vma_clone+0xe1/0x5e0 mm/rmap.c:289
anon_vma_fork+0x7a/0x620 mm/rmap.c:352
dup_mmap kernel/fork.c:714 [inline]
dup_mm kernel/fork.c:1688 [inline]
copy_mm kernel/fork.c:1737 [inline]
copy_process+0x8261/0x9090 kernel/fork.c:2390
kernel_clone+0xfd/0x980 kernel/fork.c:2797
__do_sys_clone+0xba/0x100 kernel/fork.c:2940
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f41aa27aed3
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007fff95b50a78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f41aa27aed3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000555588311750 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001