INFO: task syz-executor.3:31314 blocked for more than 143 seconds.
Not tainted 6.7.0-rc4-syzkaller-00358-gf2e8a57ee903 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24784 pid:31314 tgid:31314 ppid:28016 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: 0033:0x40f2ae
RSP: 002b:0000000020000088 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f1cb7d9bf80 RCX: 00007f1cb7c7cba9
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000000800400
RBP: 00007f1cb7cc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1cb7d9bf80 R15: 00007ffcf4106ab8
INFO: task syz-executor.0:31325 blocked for more than 143 seconds.
Not tainted 6.7.0-rc4-syzkaller-00358-gf2e8a57ee903 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24672 pid:31325 tgid:31325 ppid:22040 flags:0x00004002
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: 0033:0x7fa56607cbb1
RSP: 002b:0000000020000260 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fa56619bf80 RCX: 00007fa56607cba9
RDX: 0000000020000280 RSI: 0000000020000260 RDI: 0000000000040000
RBP: 00007fa5660c847a R08: 0000000020000300 R09: 0000000020000300
R10: 00000000200002c0 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa56619bf80 R15: 00007ffd848e1be8
INFO: task syz-executor.0:31403 blocked for more than 144 seconds.
Not tainted 6.7.0-rc4-syzkaller-00358-gf2e8a57ee903 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24784 pid:31403 tgid:31403 ppid:22040 flags:0x00004002
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: 0033:0x7fa56607cbb1
RSP: 002b:0000000020000260 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fa56619bf80 RCX: 00007fa56607cba9
RDX: 0000000020000280 RSI: 0000000020000260 RDI: 0000000000040000
RBP: 00007fa5660c847a R08: 0000000020000300 R09: 0000000020000300
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa56619bf80 R15: 00007ffd848e1be8
INFO: task syz-executor.2:31431 blocked for more than 145 seconds.
Not tainted 6.7.0-rc4-syzkaller-00358-gf2e8a57ee903 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24784 pid:31431 tgid:31431 ppid:31184 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: 0033:0x7f0bba47cbb1
RSP: 002b:0000000020000260 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f0bba59bf80 RCX: 00007f0bba47cba9
RDX: 0000000020000280 RSI: 0000000020000260 RDI: 0000000000040000
RBP: 00007f0bba4c847a R08: 0000000020000300 R09: 0000000020000300
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007f0bba59bf80 R15: 00007ffc8dc41108
Showing all locks held in the system:
1 lock held by ksoftirqd/1/22:
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:6614
3 locks held by kworker/u4:2/42:
#0: ffff888015678d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2602
#1: ffffc90000b2fd80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2603
#2: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by getty/4819:
#0: ffff88802632e0a0 (&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
3 locks held by syz-executor.3/31314:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88802dcce800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88802dcce800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88801c58c0e0 (&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.0/31325:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88802dc1b600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88802dc1b600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88801c58c0e0 (&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.0/31403:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888078fe5e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888078fe5e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88801c58c0e0 (&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.2/31431:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff8880817e4a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff8880817e4a00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3c0 fs/ext4/file.c:294
#2: ffff88801c58c0e0 (&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.5/757:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/774:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
3 locks held by syz-executor.1/811:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
#1: ffff88814cbc8950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x10d9/0x15e0 fs/jbd2/transaction.c:463
#2: ffff888078fe3e88 (&ei->i_data_sem){++++}-{3:3}, at: ext4_map_blocks+0x5a7/0x1770 fs/ext4/inode.c:614
1 lock held by syz-executor.3/815:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/842:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.5/851:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.0/961:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/1034:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.5/1052:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/1053:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/1083:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.4/1136:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/1144:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.0/1148:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
3 locks held by syz-executor.0/1155:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
#1: ffff88814cbc8950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x10d9/0x15e0 fs/jbd2/transaction.c:463
#2: ffff88803f7aa088 (&ei->i_data_sem){++++}-{3:3}, at: ext4_map_blocks+0x5a7/0x1770 fs/ext4/inode.c:614
1 lock held by syz-executor.4/1170:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.4/1176:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.0/1198:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/1227:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/1230:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.0/1250:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/1251:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/1255:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.0/1259:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/1266:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/1268:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/1296:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/1305:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.2/1339:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.4/1348:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.0/1359:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/1385:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/1391:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.4/1401:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
3 locks held by syz-executor.1/1404:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
#1: ffff88814cbc8950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x10d9/0x15e0 fs/jbd2/transaction.c:463
#2: ffff88808262f088 (&ei->i_data_sem){++++}-{3:3}, at: ext4_map_blocks+0x5a7/0x1770 fs/ext4/inode.c:614
2 locks held by syz-executor.5/1405:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888082629800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888082629800 (&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.1/1406:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/1415:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/1417:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.3/1421:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.0/1434:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.5/1436:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.4/1437:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.0/1442:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by syz-executor.2/1449:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888039c1b600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888039c1b600 (&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.2/1452:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/1464:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
1 lock held by syz-executor.1/1466:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by syz-executor.2/1526:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888082ee0400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888082ee0400 (&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.2/1527:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888082ee2200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888082ee2200 (&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.1/1544:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888081bc0e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888081bc0e00 (&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.5/1547:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88802dcc9800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88802dcc9800 (&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.0/1556:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by syz-executor.1/1560:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888082759800 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888082759800 (&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.0/1562:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88808275c000 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88808275c000 (&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.1/1561:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88803f7a8e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88803f7a8e00 (&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.2/1575:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88803f7ab600 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88803f7ab600 (&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.5/1572:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88803f7aca00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88803f7aca00 (&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.2/1589:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88808243a200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88808243a200 (&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.0/1590:
#0: ffff88801c58eb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b4/0x690 mm/page-writeback.c:2553
2 locks held by syz-executor.1/1592:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888082628e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888082628e00 (&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.0/1593:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff888071b1f200 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff888071b1f200 (&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.1/1595:
#0: ffff88801c58c418 (sb_writers#4){.+.+}-{0:0}, at: get_signal+0x2438/0x2790 kernel/signal.c:2890
#1: ffff88802dccd400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88802dccd400 (&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 dhcpcd/1829:
#0: ffff88807ec1c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1720 [inline]
#0: ffff88807ec1c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2c/0xf50 net/packet/af_packet.c:3208
#1: ffffffff8cfb7738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#1: ffffffff8cfb7738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x6b1/0x800 kernel/rcu/tree_exp.h:996
2 locks held by dhcpcd/1830:
#0: ffff88807ec1a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1720 [inline]
#0: ffff88807ec1a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2c/0xf50 net/packet/af_packet.c:3208
#1: ffffffff8cfb7738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#1: ffffffff8cfb7738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3ff/0x800 kernel/rcu/tree_exp.h:996
1 lock held by dhcpcd/1831:
#0: ffff88807c798130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1720 [inline]
#0: ffff88807c798130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2c/0xf50 net/packet/af_packet.c:3208
1 lock held by dhcpcd/1832:
#0: ffff88805f20e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1720 [inline]
#0: ffff88805f20e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2c/0xf50 net/packet/af_packet.c:3208
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc4-syzkaller-00358-gf2e8a57ee903 #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: 1560 Comm: syz-executor.1 Not tainted 6.7.0-rc4-syzkaller-00358-gf2e8a57ee903 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:page_ext_data include/linux/page_ext.h:87 [inline]
RIP: 0010:get_page_owner mm/page_owner.c:107 [inline]
RIP: 0010:__reset_page_owner+0x91/0x190 mm/page_owner.c:152
Code: 83 92 41 d3 e4 48 c1 e8 03 4c 01 f0 48 89 44 24 08 eb 7b e8 11 68 a0 ff be 08 00 00 00 48 89 df e8 e4 16 f7 ff 48 0f ba 33 01 <48> 8b 05 08 58 2f 0b 48 01 d8 48 8d 78 0c 48 89 fa 48 c1 ea 03 42
RSP: 0018:ffffc90017d0ebb8 EFLAGS: 00000247
RAX: 0000000000000001 RBX: ffff8880160524d0 RCX: ffffffff81e725ac
RDX: ffffed1002c0a49b RSI: 0000000000000008 RDI: ffff8880160524d0
RBP: 0000000000000002 R08: 0000000000000001 R09: ffffed1002c0a49a
R10: ffff8880160524d7 R11: 0000000000000003 R12: 0000000000000008
R13: 0000000000000003 R14: dffffc0000000000 R15: 000001e4b0caf5d6
FS: 00007fbddbb526c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055de5228d680 CR3: 000000001fd89000 CR4: 0000000000350ef0
Call Trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1137 [inline]
free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487
__unfreeze_partials+0x226/0x240 mm/slub.c:2655
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:763 [inline]
slab_alloc_node mm/slub.c:3478 [inline]
slab_alloc mm/slub.c:3486 [inline]
__kmem_cache_alloc_lru mm/slub.c:3493 [inline]
kmem_cache_alloc+0x15d/0x2f0 mm/slub.c:3502
kmem_cache_zalloc include/linux/slab.h:711 [inline]
jbd2_alloc_handle include/linux/jbd2.h:1592 [inline]
new_handle fs/jbd2/transaction.c:476 [inline]
jbd2__journal_start+0x190/0x840 fs/jbd2/transaction.c:503
__ext4_journal_start_sb+0x343/0x5d0 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_write_begin+0x48d/0x1100 fs/ext4/inode.c:1171
ext4_da_write_begin+0x221/0x8c0 fs/ext4/inode.c:2875
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: 0033:0x40f2ae
Code: Unable to access opcode bytes at 0x40f284.
RSP: 002b:0000000020000088 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fbddaf9bf80 RCX: 00007fbddae7cba9
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000000800400
RBP: 00007fbddaec847a R08: 0000000020000140 R09: 0000000020000140
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007fbddaf9bf80 R15: 00007ffd29471d38