INFO: task syz-executor.3:1469 blocked for more than 143 seconds.
Not tainted 6.4.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:26880 pid:1469 ppid:5025 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:810 [inline]
ext4_rename fs/ext4/namei.c:3842 [inline]
ext4_rename2+0x106b/0x4400 fs/ext4/namei.c:4221
vfs_rename+0xb1b/0xfa0 fs/namei.c:4849
do_renameat2+0xd78/0x1660 fs/namei.c:5002
__do_sys_rename fs/namei.c:5048 [inline]
__se_sys_rename fs/namei.c:5046 [inline]
__x64_sys_rename+0x86/0x90 fs/namei.c:5046
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2d8fc8c169
RSP: 002b:00007f2d90a1e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f2d8fdac050 RCX: 00007f2d8fc8c169
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000100
RBP: 00007f2d8fce7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde33a7a1f R14: 00007f2d90a1e300 R15: 0000000000022000
INFO: task syz-executor.3:1470 blocked for more than 143 seconds.
Not tainted 6.4.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27200 pid:1470 ppid:5025 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:810 [inline]
lock_two_directories+0x116/0x120 fs/namei.c:3032
ovl_workdir_ok fs/overlayfs/super.c:981 [inline]
ovl_get_workdir+0x211/0x17c0 fs/overlayfs/super.c:1416
ovl_fill_super+0x1c64/0x2bd0 fs/overlayfs/super.c:1992
mount_nodev+0x56/0xe0 fs/super.c:1426
legacy_get_tree+0xef/0x190 fs/fs_context.c:610
vfs_get_tree+0x8c/0x270 fs/super.c:1510
do_new_mount+0x28f/0xae0 fs/namespace.c:3039
do_mount fs/namespace.c:3382 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2d8fc8c169
RSP: 002b:00007f2d909fd168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2d8fdac120 RCX: 00007f2d8fc8c169
RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f2d8fce7ca1 R08: 0000000020000280 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde33a7a1f R14: 00007f2d909fd300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf276f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27ab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8cf27520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4749:
#0: ffff88802d0b2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
2 locks held by syz-fuzzer/5042:
#0: ffff888015bcb4e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x254/0x2f0 fs/file.c:1047
#1: ffff88807d50de00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: iterate_dir+0x10e/0x570 fs/readdir.c:55
4 locks held by syz-executor.3/1469:
#0: ffff88802a0dc460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:394
#1: ffff88807d50de00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:810 [inline]
#1: ffff88807d50de00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3042 [inline]
#1: ffff88807d50de00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_renameat2+0x615/0x1660 fs/namei.c:4941
#2: ffff88807a692c00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#2: ffff88807a692c00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: vfs_rename+0x617/0xfa0 fs/namei.c:4821
#3: ffff88807a690e00 (&type->i_mutex_dir_key#3/4){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:810 [inline]
#3: ffff88807a690e00 (&type->i_mutex_dir_key#3/4){+.+.}-{3:3}, at: ext4_rename fs/ext4/namei.c:3842 [inline]
#3: ffff88807a690e00 (&type->i_mutex_dir_key#3/4){+.+.}-{3:3}, at: ext4_rename2+0x106b/0x4400 fs/ext4/namei.c:4221
4 locks held by syz-executor.3/1470:
#0: ffff88802d1140e0 (&type->s_umount_key#90/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228
#1: ffff88802a0dc748 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: lock_rename+0x52/0xa0 fs/namei.c:3046
#2: ffff88807a690e00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_two_directories+0xc3/0x120
#3: ffff88807a692c00 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:810 [inline]
#3: ffff88807a692c00 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: lock_two_directories+0x116/0x120 fs/namei.c:3032
2 locks held by syz-executor.4/1600:
#0: ffff8880332840e0 (&type->s_umount_key#90/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228
#1: ffff88802a0dc748 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: lock_rename+0x52/0xa0 fs/namei.c:3046
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
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+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10 Comm: kworker/u4:0 Not tainted 6.4.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: phy10 ieee80211_iface_work
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:52 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:192 [inline]
RIP: 0010:unwind_next_frame+0x49d/0x2200 arch/x86/kernel/unwind_orc.c:466
Code: b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 27 48 63 03 48 01 d8 48 8d 4b 04 4c 39 f8 4c 0f 46 e9 48 8d 43 fc 48 0f 47 e8 <4c> 0f 46 e3 49 39 ed 76 a8 e9 aa fd ff ff 89 d9 80 e1 07 80 c1 03
RSP: 0018:ffffc900000f6d10 EFLAGS: 00000293
RAX: ffffffff8e618dc8 RBX: ffffffff8e618dcc RCX: ffffffff8e618dd0
RDX: ffffffff8ecc1cd2 RSI: 000000000009e001 RDI: 0000000000000001
RBP: ffffffff8e618e10 R08: 0000000000000022 R09: ffffc900000f6ed0
R10: ffffc900000f6e30 R11: dffffc0000000001 R12: ffffffff8e618d8c
R13: ffffffff8e618dd0 R14: ffffffff8e618d8c R15: ffffffff810060de
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c003bce8e0 CR3: 000000000cd30000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491
kvfree_call_rcu+0x109/0x8d0 kernel/rcu/tree.c:3332
cfg80211_update_known_bss+0x166/0x9e0
cfg80211_bss_update+0x171/0x20d0 net/wireless/scan.c:1732
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2482 [inline]
cfg80211_inform_bss_frame_data+0xc5b/0x22c0 net/wireless/scan.c:2515
ieee80211_bss_info_update+0x801/0xf00 net/mac80211/scan.c:190
ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
ieee80211_ibss_rx_queued_mgmt+0x192f/0x2cf0 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1594 [inline]
ieee80211_iface_work+0x7bd/0xd00 net/mac80211/iface.c:1648
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308