INFO: task syz-executor725:5852 blocked for more than 143 seconds.
Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor725 state:D stack:29200 pid:5852 tgid:5836 ppid:5831 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x189f/0x4c80 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
inode_lock include/linux/fs.h:863 [inline]
__generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
generic_file_fsync+0x70/0xf0 fs/libfs.c:1574
vfs_fsync_range fs/sync.c:187 [inline]
vfs_fsync fs/sync.c:201 [inline]
do_fsync fs/sync.c:212 [inline]
__do_sys_fdatasync fs/sync.c:222 [inline]
__se_sys_fdatasync fs/sync.c:220 [inline]
__x64_sys_fdatasync+0xb6/0x110 fs/sync.c:220
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb304358c09
RSP: 002b:00007fb3042ee218 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00007fb3043ea6d8 RCX: 00007fb304358c09
RDX: 00007fb304332196 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fb3043ea6d0 R08: 00007ffcf5b58727 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3043ad0c0
R13: 0030656c69662f30 R14: 2f30656c69662f2e R15: 0031656c69662f2e
INFO: task syz-executor725:5854 blocked for more than 144 seconds.
Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor725 state:D stack:29200 pid:5854 tgid:5837 ppid:5832 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x189f/0x4c80 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
inode_lock include/linux/fs.h:863 [inline]
__generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
generic_file_fsync+0x70/0xf0 fs/libfs.c:1574
vfs_fsync_range fs/sync.c:187 [inline]
vfs_fsync fs/sync.c:201 [inline]
do_fsync fs/sync.c:212 [inline]
__do_sys_fdatasync fs/sync.c:222 [inline]
__se_sys_fdatasync fs/sync.c:220 [inline]
__x64_sys_fdatasync+0xb6/0x110 fs/sync.c:220
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb304358c09
RSP: 002b:00007fb3042ee218 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00007fb3043ea6d8 RCX: 00007fb304358c09
RDX: 00007fb304332196 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fb3043ea6d0 R08: 00007ffcf5b58727 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3043ad0c0
R13: 0030656c69662f30 R14: 2f30656c69662f2e R15: 0031656c69662f2e
INFO: task syz-executor725:5850 blocked for more than 145 seconds.
Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor725 state:D stack:29200 pid:5850 tgid:5838 ppid:5833 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x189f/0x4c80 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
inode_lock include/linux/fs.h:863 [inline]
__generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
generic_file_fsync+0x70/0xf0 fs/libfs.c:1574
vfs_fsync_range fs/sync.c:187 [inline]
vfs_fsync fs/sync.c:201 [inline]
do_fsync fs/sync.c:212 [inline]
__do_sys_fdatasync fs/sync.c:222 [inline]
__se_sys_fdatasync fs/sync.c:220 [inline]
__x64_sys_fdatasync+0xb6/0x110 fs/sync.c:220
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb304358c09
RSP: 002b:00007fb3042ee218 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00007fb3043ea6d8 RCX: 00007fb304358c09
RDX: 00007fb304332196 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fb3043ea6d0 R08: 00007ffcf5b58727 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3043ad0c0
R13: 0030656c69662f30 R14: 2f30656c69662f2e R15: 0031656c69662f2e
INFO: task syz-executor725:5849 blocked for more than 145 seconds.
Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor725 state:D stack:28632 pid:5849 tgid:5839 ppid:5834 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x189f/0x4c80 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
inode_lock include/linux/fs.h:863 [inline]
__generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
generic_file_fsync+0x70/0xf0 fs/libfs.c:1574
vfs_fsync_range fs/sync.c:187 [inline]
vfs_fsync fs/sync.c:201 [inline]
do_fsync fs/sync.c:212 [inline]
__do_sys_fdatasync fs/sync.c:222 [inline]
__se_sys_fdatasync fs/sync.c:220 [inline]
__x64_sys_fdatasync+0xb6/0x110 fs/sync.c:220
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb304358c09
RSP: 002b:00007fb3042ee218 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00007fb3043ea6d8 RCX: 00007fb304358c09
RDX: 00007fb304332196 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fb3043ea6d0 R08: 00007ffcf5b58727 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3043ad0c0
R13: 0030656c69662f30 R14: 2f30656c69662f2e R15: 0031656c69662f2e
INFO: task syz-executor725:5851 blocked for more than 146 seconds.
Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor725 state:D stack:29200 pid:5851 tgid:5840 ppid:5835 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x189f/0x4c80 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
inode_lock include/linux/fs.h:863 [inline]
__generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
generic_file_fsync+0x70/0xf0 fs/libfs.c:1574
vfs_fsync_range fs/sync.c:187 [inline]
vfs_fsync fs/sync.c:201 [inline]
do_fsync fs/sync.c:212 [inline]
__do_sys_fdatasync fs/sync.c:222 [inline]
__se_sys_fdatasync fs/sync.c:220 [inline]
__x64_sys_fdatasync+0xb6/0x110 fs/sync.c:220
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb304358c09
RSP: 002b:00007fb3042ee218 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 00007fb3043ea6d8 RCX: 00007fb304358c09
RDX: 00007fb304332196 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fb3043ea6d0 R08: 00007ffcf5b58727 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3043ad0c0
R13: 0030656c69662f30 R14: 2f30656c69662f2e R15: 0031656c69662f2e
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by kswapd0/89:
2 locks held by kswapd1/90:
2 locks held by getty/5583:
#0: ffff8880315040a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz-executor725/5842:
1 lock held by syz-executor725/5852:
#0: ffff888076468180 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock include/linux/fs.h:863 [inline]
#0: ffff888076468180 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: __generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
3 locks held by syz-executor725/5843:
1 lock held by syz-executor725/5854:
#0: ffff8880764686c0 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock include/linux/fs.h:863 [inline]
#0: ffff8880764686c0 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: __generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
1 lock held by syz-executor725/5845:
1 lock held by syz-executor725/5850:
#0: ffff88807645cc00 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock include/linux/fs.h:863 [inline]
#0: ffff88807645cc00 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: __generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
1 lock held by syz-executor725/5844:
1 lock held by syz-executor725/5849:
#0: ffff88807645c180 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock include/linux/fs.h:863 [inline]
#0: ffff88807645c180 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: __generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
2 locks held by syz-executor725/5846:
1 lock held by syz-executor725/5851:
#0: ffff88807645c6c0 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: inode_lock include/linux/fs.h:863 [inline]
#0: ffff88807645c6c0 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: __generic_file_fsync+0x97/0x1a0 fs/libfs.c:1537
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
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 UID: 0 PID: 90 Comm: kswapd1 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:unwind_next_frame+0xc0/0x22d0 arch/x86/kernel/unwind_orc.c:482
Code: 6c 24 78 48 89 8c 24 90 00 00 00 48 89 5c 24 20 bf 01 00 00 00 e8 00 dd 21 00 49 8d 6d 50 48 89 e8 48 c1 e8 03 48 89 44 24 38 <42> 80 3c 20 00 74 08 48 89 ef e8 f1 0f ba 00 48 8b 5d 00 48 85 db
RSP: 0018:ffffc900025ee490 EFLAGS: 00000a02
RAX: 1ffff920004bdcb6 RBX: 1ffff920004bdcac RCX: ffffffff8bf4de00
RDX: dffffc0000000000 RSI: ffffffff81aae558 RDI: ffffffff816b8f90
RBP: ffffc900025ee5b0 R08: 0000000000000000 R09: ffffc900025ee650
R10: ffffc900025ee5b0 R11: ffffffff81aae620 R12: dffffc0000000000
R13: ffffc900025ee560 R14: ffffffff81aae558 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560fbbc3a680 CR3: 0000000030234000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2353 [inline]
slab_free mm/slub.c:4609 [inline]
kmem_cache_free+0x195/0x410 mm/slub.c:4711
free_buffer_head+0x54/0x240 fs/buffer.c:3031
try_to_free_buffers+0x2fa/0x3b0 fs/buffer.c:2972
shrink_folio_list+0x1f83/0x5910 mm/vmscan.c:1472
evict_folios+0x4220/0x50b0 mm/vmscan.c:4612
try_to_shrink_lruvec+0x713/0x9b0 mm/vmscan.c:4768
shrink_one+0x3b9/0x850 mm/vmscan.c:4813
shrink_many mm/vmscan.c:4876 [inline]
lru_gen_shrink_node mm/vmscan.c:4954 [inline]
shrink_node+0x37c5/0x3e50 mm/vmscan.c:5925
kswapd_shrink_node mm/vmscan.c:6754 [inline]
balance_pgdat mm/vmscan.c:6946 [inline]
kswapd+0x20f3/0x3b10 mm/vmscan.c:7211
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.700 msecs