INFO: task syz-executor.5:10735 blocked for more than 143 seconds.
Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23584 pid:10735 ppid:10558 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2644
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2692
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:2864
ext4_da_write_begin+0x172/0x8c0 fs/ext4/inode.c:2891
generic_perform_write+0x256/0x570 mm/filemap.c:3923
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
__kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x23c/0x710 fs/coredump.c:915
elf_core_dump+0x277e/0x36e0 fs/binfmt_elf.c:2142
do_coredump+0x2f2b/0x4020 fs/coredump.c:764
get_signal+0x1c02/0x25b0 kernel/signal.c:2862
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:310
asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0033:0x7fab96e8c171
RSP: 002b:0000000020000000 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fab96fabf80 RCX: 00007fab96e8c169
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000020300000
RBP: 00007fab96ee7ca1 R08: 00000000200000c0 R09: 00000000200000c0
R10: 0000000020000080 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffd6b1ac58f R14: 00007fab97bf8300 R15: 0000000000022000
INFO: task syz-executor.3:10781 blocked for more than 143 seconds.
Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23440 pid:10781 ppid:9126 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2644
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2692
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:2864
ext4_da_write_begin+0x172/0x8c0 fs/ext4/inode.c:2891
generic_perform_write+0x256/0x570 mm/filemap.c:3923
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
__kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x23c/0x710 fs/coredump.c:915
elf_core_dump+0x277e/0x36e0 fs/binfmt_elf.c:2142
do_coredump+0x2f2b/0x4020 fs/coredump.c:764
get_signal+0x1c02/0x25b0 kernel/signal.c:2862
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:310
asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0033:0x7f219c88c171
RSP: 002b:0000000020000000 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f219c9abf80 RCX: 00007f219c88c169
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000020300000
RBP: 00007f219c8e7ca1 R08: 00000000200000c0 R09: 00000000200000c0
R10: 0000000020000080 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fffebc3902f R14: 00007f219d5d6300 R15: 0000000000022000
INFO: task syz-executor.3:10817 blocked for more than 144 seconds.
Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23544 pid:10817 ppid:9126 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2644
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2692
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:2864
ext4_da_write_begin+0x172/0x8c0 fs/ext4/inode.c:2891
generic_perform_write+0x256/0x570 mm/filemap.c:3923
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
__kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x23c/0x710 fs/coredump.c:915
elf_core_dump+0x277e/0x36e0 fs/binfmt_elf.c:2142
do_coredump+0x2f2b/0x4020 fs/coredump.c:764
get_signal+0x1c02/0x25b0 kernel/signal.c:2862
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:310
asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0033:0x7f219c88c171
RSP: 002b:0000000020000000 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f219c9abf80 RCX: 00007f219c88c169
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000020300000
RBP: 00007f219c8e7ca1 R08: 00000000200000c0 R09: 00000000200000c0
R10: 0000000020000080 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fffebc3902f R14: 00007f219d5d6300 R15: 0000000000022000
INFO: task syz-executor.5:10819 blocked for more than 145 seconds.
Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23776 pid:10819 ppid:10558 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2644
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2692
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:2864
ext4_da_write_begin+0x172/0x8c0 fs/ext4/inode.c:2891
generic_perform_write+0x256/0x570 mm/filemap.c:3923
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
__kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x23c/0x710 fs/coredump.c:915
elf_core_dump+0x277e/0x36e0 fs/binfmt_elf.c:2142
do_coredump+0x2f2b/0x4020 fs/coredump.c:764
get_signal+0x1c02/0x25b0 kernel/signal.c:2862
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:310
asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0033:0x7fab96e8c171
RSP: 002b:0000000020000000 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fab96fabf80 RCX: 00007fab96e8c169
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000020300000
RBP: 00007fab96ee7ca1 R08: 00000000200000c0 R09: 00000000200000c0
R10: 0000000020000080 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffd6b1ac58f R14: 00007fab97bf8300 R15: 0000000000022000
INFO: task syz-executor.3:10875 blocked for more than 145 seconds.
Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23648 pid:10875 ppid:9126 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2644
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2692
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:2864
ext4_da_write_begin+0x172/0x8c0 fs/ext4/inode.c:2891
generic_perform_write+0x256/0x570 mm/filemap.c:3923
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
__kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x23c/0x710 fs/coredump.c:915
elf_core_dump+0x277e/0x36e0 fs/binfmt_elf.c:2142
do_coredump+0x2f2b/0x4020 fs/coredump.c:764
get_signal+0x1c02/0x25b0 kernel/signal.c:2862
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:310
asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0033:0x7f219c88c171
RSP: 002b:0000000020000000 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f219c9abf80 RCX: 00007f219c88c169
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000020300000
RBP: 00007f219c8e7ca1 R08: 00000000200000c0 R09: 00000000200000c0
R10: 0000000020000080 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fffebc3902f R14: 00007f219d5d6300 R15: 0000000000022000
INFO: task syz-executor.3:10937 blocked for more than 145 seconds.
Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23744 pid:10937 ppid:9126 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2644
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2692
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:2864
ext4_da_write_begin+0x172/0x8c0 fs/ext4/inode.c:2891
generic_perform_write+0x256/0x570 mm/filemap.c:3923
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
__kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x23c/0x710 fs/coredump.c:915
elf_core_dump+0x277e/0x36e0 fs/binfmt_elf.c:2142
do_coredump+0x2f2b/0x4020 fs/coredump.c:764
get_signal+0x1c02/0x25b0 kernel/signal.c:2862
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:310
asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0033:0x7f219c88c171
RSP: 002b:0000000020000000 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f219c9abf80 RCX: 00007f219c88c169
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007f219c8e7ca1 R08: 00000000200000c0 R09: 00000000200000c0
R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffebc3902f R14: 00007f219d5d6300 R15: 0000000000022000
INFO: task syz-executor.3:11051 blocked for more than 146 seconds.
Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24320 pid:11051 ppid:9126 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
wb_wait_for_completion+0x182/0x240 fs/fs-writeback.c:192
__writeback_inodes_sb_nr+0x1d7/0x280 fs/fs-writeback.c:2644
try_to_writeback_inodes_sb+0x98/0xc0 fs/fs-writeback.c:2692
ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:2864
ext4_da_write_begin+0x172/0x8c0 fs/ext4/inode.c:2891
generic_perform_write+0x256/0x570 mm/filemap.c:3923
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
__kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
dump_emit_page fs/coredump.c:888 [inline]
dump_user_range+0x23c/0x710 fs/coredump.c:915
elf_core_dump+0x277e/0x36e0 fs/binfmt_elf.c:2142
do_coredump+0x2f2b/0x4020 fs/coredump.c:764
get_signal+0x1c02/0x25b0 kernel/signal.c:2862
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:310
asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0033:0x7f219c88c171
RSP: 002b:0000000020000000 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f219c9abf80 RCX: 00007f219c88c169
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000020300000
RBP: 00007f219c8e7ca1 R08: 00000000200000c0 R09: 00000000200000c0
R10: 0000000020000080 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fffebc3902f R14: 00007f219d5d6300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c7984b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c7981b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8c7990c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6559
2 locks held by getty/4750:
#0: ffff88814ae21098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
3 locks held by kworker/u4:13/21512:
#0: ffff888012ebf138 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012ebf138 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012ebf138 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
#0: ffff888012ebf138 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
#0: ffff888012ebf138 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
#0: ffff888012ebf138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376
#1: ffffc9000353fdb0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380
#2: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
3 locks held by syz-executor.5/10735:
#0: ffff8880292ba460 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x1c02/0x25b0 kernel/signal.c:2862
#1: ffff88803054d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff88803054d400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:283
#2: ffff8880292ba0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2689
3 locks held by syz-executor.3/10781:
#0: ffff8880292ba460 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x1c02/0x25b0 kernel/signal.c:2862
#1: ffff888034b1ca00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888034b1ca00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:283
#2: ffff8880292ba0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2689
3 locks held by syz-executor.3/10817:
#0: ffff8880292ba460 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x1c02/0x25b0 kernel/signal.c:2862
#1: ffff888038679800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888038679800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:283
#2: ffff8880292ba0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2689
3 locks held by syz-executor.5/10819:
#0: ffff8880292ba460 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x1c02/0x25b0 kernel/signal.c:2862
#1: ffff888046a45e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888046a45e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:283
#2: ffff8880292ba0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2689
3 locks held by syz-executor.3/10875:
#0: ffff8880292ba460 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x1c02/0x25b0 kernel/signal.c:2862
#1: ffff88803cf55400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff88803cf55400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:283
#2: ffff8880292ba0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2689
3 locks held by syz-executor.3/10937:
#0: ffff8880292ba460 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x1c02/0x25b0 kernel/signal.c:2862
#1: ffff888078644a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888078644a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:283
#2: ffff8880292ba0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2689
3 locks held by syz-executor.3/11051:
#0: ffff8880292ba460 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x1c02/0x25b0 kernel/signal.c:2862
#1: ffff888074e85400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888074e85400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 fs/ext4/file.c:283
#2: ffff8880292ba0e0 (&type->s_umount_key#32){++++}-{3:3}, at: try_to_writeback_inodes_sb+0x21/0xc0 fs/fs-writeback.c:2689
4 locks held by kworker/u4:41/28040:
#0: ffff888027569938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888027569938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888027569938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
#0: ffff888027569938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
#0: ffff888027569938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
#0: ffff888027569938 ((wq_completion)ext4-rsv-conversion){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376
#1: ffffc9000421fdb0 ((work_completion)(&ei->i_rsv_conversion_work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380
#2: ffff8880292be990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfb4/0x14e0 fs/jbd2/transaction.c:461
#3: ffff88803867f088 (&ei->i_data_sem){++++}-{3:3}, at: ext4_map_blocks+0x707/0x18d0 fs/ext4/inode.c:616
1 lock held by syz-executor.4/31375:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.4/31999:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.2/32017:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.5/32024:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.2/32041:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.5/32215:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.3/32219:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.2/32222:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.4/32226:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.5/32239:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.4/32241:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.3/32272:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.4/32275:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.5/32319:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.4/32384:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.3/32424:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.4/32429:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.3/32439:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.4/32463:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32471:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.4/32490:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32515:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32519:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32565:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32571:
1 lock held by syz-executor.1/32578:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.4/32580:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32621:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32628:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32636:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.3/32644:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.0/32649:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.5/32656:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32680:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32715:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32717:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.0/32749:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32755:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/32757:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.0/32764:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.0/315:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/341:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/343:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/344:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.0/363:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/369:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.0/401:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/418:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.0/422:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.0/455:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.1/558:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.5/623:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.5/670:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
1 lock held by syz-executor.5/699:
#0: ffff8880292bcb98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
3 locks held by dhcpcd-run-hook/1321:
#0: ffff8880b993c5d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:558
#1: ffff8880b9928848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2de/0x950 kernel/sched/psi.c:996
#2: ffff8880b9928848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_change+0x1bf/0x300 kernel/sched/psi.c:920
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #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+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 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+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 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: 28050 Comm: kworker/u4:51 Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0xf45/0x5f30 kernel/locking/lockdep.c:5058
Code: 51 f7 ff ff 4c 63 74 24 10 be 08 00 00 00 4c 89 f0 48 c1 e8 06 48 8d 3c c5 00 9d 52 91 e8 e3 88 71 00 4c 0f a3 35 5b 10 ed 0f <0f> 82 06 fa ff ff e8 30 72 aa 02 85 c0 0f 84 19 ff ff ff 48 c7 c0
RSP: 0018:ffffc900042afa28 EFLAGS: 00000047
RAX: 0000000000000001 RBX: ffffffff9157a9a0 RCX: ffffffff81658c9d
RDX: fffffbfff22a53a1 RSI: 0000000000000008 RDI: ffffffff91529d00
RBP: ffff88808a128000 R08: 0000000000000000 R09: ffffffff91529d07
R10: fffffbfff22a53a0 R11: 0000000000000004 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000020 R15: ffff88808a128b18
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558cbe7c0c30 CR3: 000000000c571000 CR4: 0000000000350ef0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5705 [inline]
lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670
rcu_lock_acquire include/linux/rcupdate.h:327 [inline]
rcu_read_lock include/linux/rcupdate.h:773 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x131/0xfe0 net/batman-adv/network-coding.c:719
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308