INFO: task syz-executor.3:3683 blocked for more than 143 seconds.
Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23584 pid:3683 tgid:3683 ppid:32539 flags:0x00004006
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
wb_wait_for_completion+0x1ae/0x270 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d8/0x270 fs/fs-writeback.c:2672
try_to_writeback_inodes_sb+0x97/0xc0 fs/fs-writeback.c:2720
ext4_nonda_switch+0x1a9/0x1f0 fs/ext4/inode.c:2846
ext4_da_write_begin+0x16e/0x8c0 fs/ext4/inode.c:2873
generic_perform_write+0x278/0x600 mm/filemap.c:3918
ext4_buffered_write_iter+0x11f/0x3c0 fs/ext4/file.c:299
ext4_file_write_iter+0x819/0x1950 fs/ext4/file.c:696
__kernel_write_iter+0x261/0x7b0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x299/0x790 fs/coredump.c:915
elf_core_dump+0x2706/0x3900 fs/binfmt_elf.c:2077
do_coredump+0x2c97/0x3fd0 fs/coredump.c:764
get_signal+0x2438/0x2790 kernel/signal.c:2890
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x121/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0xa/0x40 kernel/entry/common.c:309
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007efea4f9bf80 RCX: 00007efea4e7cae9
RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007efea4ec847a R08: 0000000020000140 R09: 0000000020000140
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007efea4f9bf80 R15: 00007ffed2e0bb48
INFO: task syz-executor.3:3923 blocked for more than 143 seconds.
Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23616 pid:3923 tgid:3923 ppid:32539 flags:0x00004006
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
wb_wait_for_completion+0x1ae/0x270 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d8/0x270 fs/fs-writeback.c:2672
try_to_writeback_inodes_sb+0x97/0xc0 fs/fs-writeback.c:2720
ext4_nonda_switch+0x1a9/0x1f0 fs/ext4/inode.c:2846
ext4_da_write_begin+0x16e/0x8c0 fs/ext4/inode.c:2873
generic_perform_write+0x278/0x600 mm/filemap.c:3918
ext4_buffered_write_iter+0x11f/0x3c0 fs/ext4/file.c:299
ext4_file_write_iter+0x819/0x1950 fs/ext4/file.c:696
__kernel_write_iter+0x261/0x7b0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x299/0x790 fs/coredump.c:915
elf_core_dump+0x2706/0x3900 fs/binfmt_elf.c:2077
do_coredump+0x2c97/0x3fd0 fs/coredump.c:764
get_signal+0x2438/0x2790 kernel/signal.c:2890
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x121/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0xa/0x40 kernel/entry/common.c:309
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007efea4f9bf80 RCX: 00007efea4e7cae9
RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007efea4ec847a R08: 0000000020000140 R09: 0000000020000140
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007efea4f9bf80 R15: 00007ffed2e0bb48
INFO: task syz-executor.3:4514 blocked for more than 144 seconds.
Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24784 pid:4514 tgid:4514 ppid:32539 flags:0x00004006
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
wb_wait_for_completion+0x1ae/0x270 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d8/0x270 fs/fs-writeback.c:2672
try_to_writeback_inodes_sb+0x97/0xc0 fs/fs-writeback.c:2720
ext4_nonda_switch+0x1a9/0x1f0 fs/ext4/inode.c:2846
ext4_da_write_begin+0x16e/0x8c0 fs/ext4/inode.c:2873
generic_perform_write+0x278/0x600 mm/filemap.c:3918
ext4_buffered_write_iter+0x11f/0x3c0 fs/ext4/file.c:299
ext4_file_write_iter+0x819/0x1950 fs/ext4/file.c:696
__kernel_write_iter+0x261/0x7b0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x299/0x790 fs/coredump.c:915
elf_core_dump+0x2706/0x3900 fs/binfmt_elf.c:2077
do_coredump+0x2c97/0x3fd0 fs/coredump.c:764
get_signal+0x2438/0x2790 kernel/signal.c:2890
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x121/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0xa/0x40 kernel/entry/common.c:309
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007efea4f9bf80 RCX: 00007efea4e7cae9
RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007efea4ec847a R08: 0000000020000140 R09: 0000000020000140
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007efea4f9bf80 R15: 00007ffed2e0bb48
INFO: task syz-executor.0:4517 blocked for more than 144 seconds.
Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24688 pid:4517 tgid:4517 ppid:31272 flags:0x00004006
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
wb_wait_for_completion+0x1ae/0x270 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d8/0x270 fs/fs-writeback.c:2672
try_to_writeback_inodes_sb+0x97/0xc0 fs/fs-writeback.c:2720
ext4_nonda_switch+0x1a9/0x1f0 fs/ext4/inode.c:2846
ext4_da_write_begin+0x16e/0x8c0 fs/ext4/inode.c:2873
generic_perform_write+0x278/0x600 mm/filemap.c:3918
ext4_buffered_write_iter+0x11f/0x3c0 fs/ext4/file.c:299
ext4_file_write_iter+0x819/0x1950 fs/ext4/file.c:696
__kernel_write_iter+0x261/0x7b0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x299/0x790 fs/coredump.c:915
elf_core_dump+0x2706/0x3900 fs/binfmt_elf.c:2077
do_coredump+0x2c97/0x3fd0 fs/coredump.c:764
get_signal+0x2438/0x2790 kernel/signal.c:2890
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x121/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0xa/0x40 kernel/entry/common.c:309
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:0000000020000408 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fa92cd9bf80 RCX: 00007fa92cc7cae9
RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000200000
RBP: 00007fa92ccc847a R08: 0000000020000500 R09: 0000000020000500
R10: 00000000200004c0 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa92cd9bf80 R15: 00007fff8cea5488
INFO: task syz-executor.3:4518 blocked for more than 145 seconds.
Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24688 pid:4518 tgid:4518 ppid:32539 flags:0x00004006
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
wb_wait_for_completion+0x1ae/0x270 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d8/0x270 fs/fs-writeback.c:2672
try_to_writeback_inodes_sb+0x97/0xc0 fs/fs-writeback.c:2720
ext4_nonda_switch+0x1a9/0x1f0 fs/ext4/inode.c:2846
ext4_da_write_begin+0x16e/0x8c0 fs/ext4/inode.c:2873
generic_perform_write+0x278/0x600 mm/filemap.c:3918
ext4_buffered_write_iter+0x11f/0x3c0 fs/ext4/file.c:299
ext4_file_write_iter+0x819/0x1950 fs/ext4/file.c:696
__kernel_write_iter+0x261/0x7b0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x299/0x790 fs/coredump.c:915
elf_core_dump+0x2706/0x3900 fs/binfmt_elf.c:2077
do_coredump+0x2c97/0x3fd0 fs/coredump.c:764
get_signal+0x2438/0x2790 kernel/signal.c:2890
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x121/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0xa/0x40 kernel/entry/common.c:309
asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0033:0x7efea4e7caf1
RSP: 002b:00000000200002b0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007efea4f9c050 RCX: 00007efea4e7cae9
RDX: 00000000200002c0 RSI: 00000000200002b0 RDI: 0000000000000000
RBP: 00007efea4ec847a R08: 0000000020000340 R09: 0000000020000340
R10: 0000000020000300 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007efea4f9c050 R15: 00007ffed2e0bb48
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cfabce0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8cfabce0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8cfabce0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/4821:
#0: ffff8880265f50a0 (&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+0xfc6/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.2/16832:
#0: ffff888063f22d48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1177
#1: ffff888087c28e00 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: iterate_dir+0xe4/0x5b0 fs/readdir.c:99
2 locks held by syz-executor.5/2597:
#0: ffff888063f225c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1177
#1: ffff888041293600 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: iterate_dir+0xe4/0x5b0 fs/readdir.c:99
3 locks held by syz-executor.3/3683:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888087c02200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888087c02200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
1 lock held by syz-executor.3/3923:
3 locks held by kworker/u4:8/4491:
#0: ffff888140054538 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2605
#1: ffffc9000d977d80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2606
#2: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
3 locks held by syz-executor.3/4514:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888034c3ca00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888034c3ca00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
3 locks held by syz-executor.0/4517:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888034aa8400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888034aa8400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
3 locks held by syz-executor.3/4518:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff8880575a4a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880575a4a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
3 locks held by syz-executor.3/4542:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88808502c000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88808502c000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
3 locks held by syz-executor.5/4540:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88808502f200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88808502f200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
3 locks held by syz-executor.3/4543:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888048fb8400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888048fb8400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
3 locks held by syz-executor.0/4548:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88808502de00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88808502de00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
2 locks held by syz-executor.1/4549:
#0: ffff88808a10cac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1177
#1: ffff888087c2b600 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: iterate_dir+0xe4/0x5b0 fs/readdir.c:99
3 locks held by syz-executor.5/4563:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff8880358fe800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880358fe800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
2 locks held by syz-executor.4/4571:
#0: ffff88808a10dc48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1177
#1: ffff888041290400 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: iterate_dir+0xe4/0x5b0 fs/readdir.c:99
3 locks held by syz-executor.3/4567:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88808502ca00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88808502ca00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
3 locks held by syz-executor.3/4573:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888085028400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888085028400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
3 locks held by syz-executor.5/4574:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888049b0c000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888049b0c000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88814ca7e0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2717
1 lock held by syz-executor.2/5171:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/5217:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.5/5257:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/5266:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.5/5267:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/5268:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.5/5299:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/5302:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/5322:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.5/5345:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.5/5347:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/5377:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/5378:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/5382:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/5383:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by syz-executor.5/5396:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888042898e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888042898e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
1 lock held by syz-executor.1/5398:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.4/5399:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.4/5400:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/5411:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/5415:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by syz-executor.2/5439:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff8880575a0400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880575a0400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
1 lock held by syz-executor.5/5448:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/5452:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by syz-executor.4/5471:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff8880358fc000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880358fc000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.3/5476:
#0: ffff88805bbd0348 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x170 fs/file.c:1177
#1: ffff888087c28400 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: iterate_dir+0xe4/0x5b0 fs/readdir.c:99
2 locks held by syz-executor.2/5494:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88803bddb600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88803bddb600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.5/5497:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888041036800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888041036800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.5/5498:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888041030400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888041030400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.4/5501:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888034c3b600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888034c3b600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.2/5503:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888034c3a200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888034c3a200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.4/5504:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888041032c00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888041032c00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.5/5505:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888041031800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888041031800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.4/5507:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888041032200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888041032200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.2/5508:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888034c3c000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888034c3c000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
1 lock held by syz-executor.3/5515:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by syz-executor.3/5516:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88804b4a5e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88804b4a5e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.1/5522:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888049ad7200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888049ad7200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
1 lock held by syz-executor.1/5527:
#0: ffff88814cb00b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by syz-executor.1/5530:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88804b4a1800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88804b4a1800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.3/5535:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888034fd9800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888034fd9800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.5/5536:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88804b4a5400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88804b4a5400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.3/5539:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff8880354db600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880354db600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.5/5540:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888062b64a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888062b64a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.4/5541:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888062b64000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888062b64000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.5/5546:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888062b60e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888062b60e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.2/5551:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888034ce8e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888034ce8e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
3 locks held by syz-executor.0/5562:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: do_unlinkat+0x1cf/0x740 fs/namei.c:4365
#1: ffff888087c2c000 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888087c2c000 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x284/0x740 fs/namei.c:4369
#2: ffff8880358f9800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff8880358f9800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_unlink+0xd3/0x900 fs/namei.c:4307
2 locks held by syz-executor.4/5577:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888034ced400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888034ced400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.5/5578:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888087c2ca00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888087c2ca00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.1/5580:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff8880575a2c00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880575a2c00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.4/5581:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff8880575a3600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880575a3600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.1/5588:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888087c2d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888087c2d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.0/5600:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888041292200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888041292200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.0/5601:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888041294a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888041294a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.0/5602:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff8880358f9800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880358f9800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.3/5612:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888081784000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888081784000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
3 locks held by syz-executor.3/5615:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: do_unlinkat+0x1cf/0x740 fs/namei.c:4365
#1: ffff888087c28400 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888087c28400 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x284/0x740 fs/namei.c:4369
#2: ffff888081784000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888081784000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_unlink+0xd3/0x900 fs/namei.c:4307
2 locks held by syz-executor.1/5617:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888081780e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888081780e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.2/5618:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88808502d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88808502d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.5/5619:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88804289d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88804289d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.4/5621:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888081780400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888081780400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
3 locks held by syz-executor.2/5622:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: do_unlinkat+0x1cf/0x740 fs/namei.c:4365
#1: ffff888087c28e00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888087c28e00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x284/0x740 fs/namei.c:4369
#2: ffff88808502d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff88808502d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_unlink+0xd3/0x900 fs/namei.c:4307
3 locks held by syz-executor.5/5623:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: do_unlinkat+0x1cf/0x740 fs/namei.c:4365
#1: ffff888041293600 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888041293600 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x284/0x740 fs/namei.c:4369
#2: ffff88804289d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff88804289d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_unlink+0xd3/0x900 fs/namei.c:4307
3 locks held by syz-executor.4/5624:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: do_unlinkat+0x1cf/0x740 fs/namei.c:4365
#1: ffff888041290400 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888041290400 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x284/0x740 fs/namei.c:4369
#2: ffff888081780400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff888081780400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_unlink+0xd3/0x900 fs/namei.c:4307
2 locks held by syz-executor.1/5625:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88804289e800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88804289e800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
2 locks held by syz-executor.5/5627:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: do_unlinkat+0x1cf/0x740 fs/namei.c:4365
#1: ffff888041293600 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888041293600 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x284/0x740 fs/namei.c:4369
2 locks held by syz-executor.4/5628:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: do_unlinkat+0x1cf/0x740 fs/namei.c:4365
#1: ffff888041290400 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888041290400 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x284/0x740 fs/namei.c:4369
2 locks held by syz-executor.2/5630:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: do_unlinkat+0x1cf/0x740 fs/namei.c:4365
#1: ffff888087c28e00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888087c28e00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x284/0x740 fs/namei.c:4369
3 locks held by syz-executor.1/5631:
#0: ffff88814ca7e418 (sb_writers#4){.+.+}-{0:0}, at: do_unlinkat+0x1cf/0x740 fs/namei.c:4365
#1: ffff888087c2b600 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888087c2b600 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x284/0x740 fs/namei.c:4369
#2: ffff88804289e800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#2: ffff88804289e800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_unlink+0xd3/0x900 fs/namei.c:4307
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
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: 4501 Comm: syslogd Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:hlock_class+0xb/0x130 kernel/locking/lockdep.c:222
Code: 0f 0b 90 eb 80 48 89 3c 24 e8 a1 ee 76 00 48 8b 3c 24 eb 88 66 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 <48> 89 fb 48 83 c7 20 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08
RSP: 0018:ffffc9000313fa60 EFLAGS: 00000012
RAX: dffffc0000000000 RBX: ffff88807c266400 RCX: 0000000000000007
RDX: dffffc0000000000 RSI: ffff88807c266400 RDI: ffff88807c266400
RBP: ffffc9000313fbb0 R08: 0000000000000000 R09: fffffbfff23e33e4
R10: ffffffff91f19f27 R11: 0000000000000002 R12: ffff88807c265940
R13: 0000000000000080 R14: 0000000000000007 R15: 1ffff92000627f54
FS: 00007f4e54929380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556593938 CR3: 000000002730d000 CR4: 0000000000350ef0
Call Trace:
mark_lock+0xb5/0xc50 kernel/locking/lockdep.c:4655
mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:4273
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4299 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4358 [inline]
lockdep_hardirqs_on_prepare+0x278/0x420 kernel/locking/lockdep.c:4310
trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline]
ktime_get_coarse_real_ts64+0x1a5/0x200 kernel/time/timekeeping.c:2261
current_time fs/inode.c:2532 [inline]
inode_needs_update_time+0x85/0x380 fs/inode.c:2114
file_update_time+0x42/0x160 fs/inode.c:2168
shmem_file_write_iter+0xee/0x140 mm/shmem.c:2875
call_write_iter include/linux/fs.h:2020 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x64f/0xdf0 fs/read_write.c:584
ksys_write+0x12f/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4e54a7dbf2
Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffdbd6df658 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4e54a7dbf2
RDX: 0000000000000044 RSI: 00005648fa1f8c50 RDI: 0000000000000003
RBP: 00005648fa1f8c50 R08: 0000000000000001 R09: 0000000000000000
R10: 00007f4e54c1c3a3 R11: 0000000000000246 R12: 0000000000000044
R13: 00007f4e54929300 R14: 0000000000000004 R15: 00005648fa1f8a60