INFO: task syz-executor.3:21228 blocked for more than 143 seconds.
Not tainted 6.6.0-rc6-syzkaller-00330-gd537ae43f8a1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24040 pid:21228 ppid:5075 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0xee6/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:802 [inline]
f2fs_ioc_commit_atomic_write fs/f2fs/file.c:2172 [inline]
__f2fs_ioctl+0x35a0/0xb9b0 fs/f2fs/file.c:4224
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xf8/0x170 fs/ioctl.c:857
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: 0033:0x7fb0c467cae9
RSP: 002b:00007fb0c53e30c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb0c479bf80 RCX: 00007fb0c467cae9
RDX: 0000000000008301 RSI: 000000000000f502 RDI: 0000000000000005
RBP: 00007fb0c46c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb0c479bf80 R15: 00007ffed2f49ca8
Showing all locks held in the system:
4 locks held by kworker/u4:1/12:
#0: ffff888019255d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888019255d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc90000117d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc90000117d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#2: ffff888040ab60e0 (&type->s_umount_key#80){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:607
#3: ffff8880760752a8 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2132 [inline]
#3: ffff8880760752a8 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x500/0x730 fs/f2fs/segment.c:437
1 lock held by khungtaskd/29:
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
5 locks held by kworker/u4:6/1080:
2 locks held by getty/4786:
#0: ffff88802a7390a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
4 locks held by syz-executor.4/5072:
2 locks held by kworker/u4:0/9750:
1 lock held by syz-executor.0/15396:
#0: ffffffff8d331df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8d331df8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
2 locks held by syz-executor.3/21228:
#0: ffff888040ab6410 (sb_writers#24){.+.+}-{0:0}, at: mnt_want_write_file+0x61/0x200 fs/namespace.c:447
#1: ffff8880352b1bd8 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880352b1bd8 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: f2fs_ioc_commit_atomic_write fs/f2fs/file.c:2172 [inline]
#1: ffff8880352b1bd8 (&sb->s_type->i_mutex_key#31){+.+.}-{3:3}, at: __f2fs_ioctl+0x35a0/0xb9b0 fs/f2fs/file.c:4224
7 locks held by syz-executor.3/21242:
1 lock held by udevd/21263:
4 locks held by syz-executor.3/21294:
#0: ffff888025e3c410 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:403
#1: ffff888025e3c600 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1571 [inline]
#1: ffff888025e3c600 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1693 [inline]
#1: ffff888025e3c600 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x2e3/0xf20 fs/ext4/inode.c:212
#2: ffff8880b993c318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#3: ffff88814be78988 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x2030/0x2290 fs/jbd2/transaction.c:463
2 locks held by syz-executor.5/22304:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc6-syzkaller-00330-gd537ae43f8a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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+0x198/0x310 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+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22304 Comm: syz-executor.5 Not tainted 6.6.0-rc6-syzkaller-00330-gd537ae43f8a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:shmem_add_to_page_cache+0xb9d/0x1d70
Code: e8 68 61 c4 ff 49 8d 46 48 48 89 84 24 80 00 00 00 49 8d 46 40 48 89 44 24 78 48 8b 44 24 60 48 05 10 01 00 00 48 89 44 24 60 <48> c1 e8 03 48 89 44 24 40 48 b8 00 00 00 00 00 fc ff df 80 3c 03
RSP: 0018:ffffc9000a377720 EFLAGS: 00000286
RAX: ffff88801bee6188 RBX: 1ffff9200146eefc RCX: ffff888021a40000
RDX: ffffc900056d9000 RSI: 0000000000000740 RDI: 0000000000000000
RBP: ffffc9000a377890 R08: ffffffff81c9b038 R09: 1ffffffff1d3350d
R10: dffffc0000000000 R11: fffffbfff1d3350e R12: 0000000000000000
R13: 0000000000000001 R14: ffffea0000c8e740 R15: 0000000000000cc0
FS: 00007f51ed71f6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa799f77978 CR3: 000000007d32f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
shmem_get_folio_gfp+0x108e/0x2b60 mm/shmem.c:2050
shmem_get_folio mm/shmem.c:2143 [inline]
shmem_write_begin+0x170/0x300 mm/shmem.c:2688
generic_perform_write+0x31b/0x630 mm/filemap.c:3969
shmem_file_write_iter+0xfc/0x120 mm/shmem.c:2865
call_write_iter include/linux/fs.h:1956 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x782/0xaf0 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
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: 0033:0x7f51eca7b82f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 b9 80 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 0c 81 02 00 48
RSP: 002b:00007f51ed71ee70 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000013bd7ef RCX: 00007f51eca7b82f
RDX: 00000000013bd7ef RSI: 00007f51e31ff000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000054f3
R10: 000000002000ab42 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f51ed71ef3c R14: 00007f51ed71ef40 R15: 00007f51e31ff000