INFO: task syz-executor.5:12917 blocked for more than 143 seconds.
Not tainted 6.7.0-rc8-syzkaller-00177-g52b1853b080a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:26368 pid:12917 tgid:12914 ppid:5443 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x948/0x1400 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:837 [inline]
filename_create+0x1c2/0x530 fs/namei.c:3875
do_mkdirat+0xab/0x3a0 fs/namei.c:4121
__do_sys_mkdir fs/namei.c:4149 [inline]
__se_sys_mkdir fs/namei.c:4147 [inline]
__x64_sys_mkdir+0xf2/0x140 fs/namei.c:4147
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f0c9547cae9
RSP: 002b:00007f0c9626a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f0c9559bf80 RCX: 00007f0c9547cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f0c954c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f0c9559bf80 R15: 00007ffca61ff498
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8cfab760 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
1 lock held by udevd/4522:
2 locks held by getty/4818:
#0: ffff8880299f20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.5/12917:
#0: ffff888067aac418 (sb_writers#13){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:3868
#1: ffff888063da1630 (&sb->s_type->i_mutex_key#21/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888063da1630 (&sb->s_type->i_mutex_key#21/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:3875
3 locks held by syz-executor.5/12929:
1 lock held by syz-executor.5/12980:
3 locks held by syz-executor.5/16918:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc8-syzkaller-00177-g52b1853b080a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 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+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5437 Comm: syz-executor.1 Not tainted 6.7.0-rc8-syzkaller-00177-g52b1853b080a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1d/0x60 kernel/kcov.c:207
Code: 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 48 8b 14 25 c0 bc 03 00 65 8b 05 24 4a 7c 7e a9 00 01 ff 00 48 8b 34 24 <74> 0f f6 c4 01 74 35 8b 82 fc 15 00 00 85 c0 74 2b 8b 82 d8 15 00
RSP: 0018:ffffc90004e2f408 EFLAGS: 00000246
RAX: 0000000080000001 RBX: ffffffff8f31726c RCX: ffffffff8139ebf4
RDX: ffff88807e378000 RSI: ffffffff8139ebaa RDI: 0000000000000006
RBP: ffffffff8f317270 R08: 0000000000000006 R09: ffffffff81de1b3a
R10: ffffffff81de1b02 R11: 0000000000000005 R12: ffffffff81de1b3a
R13: ffffffff81de1b02 R14: dffffc0000000000 R15: ffffffff8f317268
FS: 000055555567e480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555568f978 CR3: 000000002676a000 CR4: 0000000000350ef0
Call Trace:
__orc_find+0x7a/0x130 arch/x86/kernel/unwind_orc.c:100
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x329/0x2390 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
slab_free mm/slub.c:3809 [inline]
__kmem_cache_free+0xc0/0x180 mm/slub.c:3822
ext4_free_ext_path fs/ext4/extents.c:125 [inline]
ext4_ext_remove_space+0x915/0x43a0 fs/ext4/extents.c:3066
ext4_ext_truncate+0x243/0x2e0 fs/ext4/extents.c:4408
ext4_truncate+0xd81/0x1310 fs/ext4/inode.c:4169
ext4_evict_inode+0x7a3/0x1a40 fs/ext4/inode.c:258
evict+0x2ed/0x6b0 fs/inode.c:666
iput_final fs/inode.c:1777 [inline]
iput.part.0+0x560/0x7b0 fs/inode.c:1803
iput+0x5c/0x80 fs/inode.c:1793
d_delete_notify include/linux/fsnotify.h:262 [inline]
vfs_rmdir fs/namei.c:4202 [inline]
vfs_rmdir+0x454/0x650 fs/namei.c:4166
do_rmdir+0x39e/0x410 fs/namei.c:4248
__do_sys_unlinkat fs/namei.c:4424 [inline]
__se_sys_unlinkat fs/namei.c:4418 [inline]
__x64_sys_unlinkat+0xef/0x130 fs/namei.c:4418
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f59ab27c2c7
Code: 73 01 c3 48 c7 c1 b0 ff ff ff 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 07 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdac763468 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f59ab27c2c7
RDX: 0000000000000200 RSI: 00007ffdac764610 RDI: 00000000ffffff9c
RBP: 00007f59ab2c73b9 R08: 000055555568799b R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000207 R12: 00007ffdac764610
R13: 00007f59ab2c73b9 R14: 0000000000066cc2 R15: 0000000000000004