INFO: task syz-executor:5823 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:19216 pid:5823 tgid:5823 ppid:5821 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
io_schedule+0x8d/0x110 kernel/sched/core.c:7681
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x121/0xe60 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
__ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2112 [inline]
inode_update_time fs/inode.c:2125 [inline]
__file_update_time fs/inode.c:2353 [inline]
file_update_time+0x3d2/0x450 fs/inode.c:2383
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
do_page_mkwrite+0x198/0x480 mm/memory.c:3176
wp_page_shared mm/memory.c:3577 [inline]
do_wp_page+0x2352/0x5160 mm/memory.c:3727
handle_pte_fault+0x111e/0x68a0 mm/memory.c:5817
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f67006678fc
RSP: 002b:00007ffd6f45a720 EFLAGS: 00010202
RAX: 00007f66fe680000 RBX: 00005555684891c0 RCX: 0000000000000004
RDX: 1ffffffff0366564 RSI: 000055556847a708 RDI: 0000000000000010
RBP: 00007ffd6f45ac20 R08: 000055556847a738 R09: 0000000000000cac
R10: 00007f67014af038 R11: 0000000000000246 R12: 00007ffd6f45aa70
R13: 0000000000000005 R14: 00007ffd6f45a790 R15: 00007ffd6f45a860
INFO: task kworker/u8:36:8351 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:36 state:D stack:20408 pid:8351 tgid:8351 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
io_schedule+0x8d/0x110 kernel/sched/core.c:7681
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x121/0xe60 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
ext4_mb_mark_context+0x196/0xfb0 fs/ext4/mballoc.c:4003
ext4_mb_mark_diskspace_used+0x3c8/0x960 fs/ext4/mballoc.c:4133
ext4_mb_new_blocks+0x1494/0x4e30 fs/ext4/mballoc.c:6235
ext4_ext_map_blocks+0x1beb/0x7e40 fs/ext4/extents.c:4379
ext4_map_create_blocks fs/ext4/inode.c:516 [inline]
ext4_map_blocks+0x8bf/0x1990 fs/ext4/inode.c:702
mpage_map_one_extent fs/ext4/inode.c:2219 [inline]
mpage_map_and_submit_extent fs/ext4/inode.c:2272 [inline]
ext4_do_writepages+0x20ef/0x3d10 fs/ext4/inode.c:2735
ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2824
do_writepages+0x35f/0x880 mm/page-writeback.c:2702
__writeback_single_inode+0x14f/0x10d0 fs/fs-writeback.c:1680
writeback_sb_inodes+0x80c/0x1370 fs/fs-writeback.c:1976
__writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:2047
wb_writeback+0x427/0xbc0 fs/fs-writeback.c:2158
wb_check_old_data_flush fs/fs-writeback.c:2262 [inline]
wb_do_writeback fs/fs-writeback.c:2315 [inline]
wb_workfn+0xba1/0x1090 fs/fs-writeback.c:2343
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.5.973:10883 blocked for more than 144 seconds.
Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.973 state:D stack:24128 pid:10883 tgid:10883 ppid:8893 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
io_schedule+0x8d/0x110 kernel/sched/core.c:7681
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x121/0xe60 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
__ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2112 [inline]
inode_update_time fs/inode.c:2125 [inline]
__file_update_time fs/inode.c:2353 [inline]
file_update_time+0x3d2/0x450 fs/inode.c:2383
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
do_page_mkwrite+0x198/0x480 mm/memory.c:3176
wp_page_shared mm/memory.c:3577 [inline]
do_wp_page+0x2352/0x5160 mm/memory.c:3727
handle_pte_fault+0x111e/0x68a0 mm/memory.c:5817
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fc36405ccd7
RSP: 002b:00007ffc0ad513a0 EFLAGS: 00010202
RAX: 0000001b2f01fe6c RBX: 00007fc364e65720 RCX: ffffffff81374037
RDX: 0000001b2f01fe68 RSI: 0000000000000004 RDI: 00007fc364e65720
RBP: fffffffffffffe6c R08: 00007fc3643361f8 R09: 00007fc364322000
R10: 00007fc362ffb008 R11: 0000000000000018 R12: 0000000000000194
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000009df4
INFO: task syz.1.976:10893 blocked for more than 144 seconds.
Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.976 state:D stack:25952 pid:10893 tgid:10893 ppid:5835 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
io_schedule+0x8d/0x110 kernel/sched/core.c:7681
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x121/0xe60 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
__ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2112 [inline]
inode_update_time fs/inode.c:2125 [inline]
__file_update_time fs/inode.c:2353 [inline]
file_update_time+0x3d2/0x450 fs/inode.c:2383
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
do_page_mkwrite+0x198/0x480 mm/memory.c:3176
do_shared_fault mm/memory.c:5398 [inline]
do_fault mm/memory.c:5460 [inline]
do_pte_missing mm/memory.c:3979 [inline]
handle_pte_fault+0x1235/0x68a0 mm/memory.c:5801
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f29a7e5ccd7
RSP: 002b:00007fff6bd85e00 EFLAGS: 00010202
RAX: 0000001b30520000 RBX: 00007f29a8c65720 RCX: 0000001b30120210
RDX: 0000001b3051fffc RSI: 00000000003ffdf0 RDI: 00007f29a8c65700
RBP: 0000000000000000 R08: 00007f29a8136038 R09: 00007f29a8122000
R10: 00007f29a8c65700 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000037
INFO: task syz.3.979:10898 blocked for more than 145 seconds.
Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.979 state:D stack:24128 pid:10898 tgid:10898 ppid:5843 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
io_schedule+0x8d/0x110 kernel/sched/core.c:7681
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x121/0xe60 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
__ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2112 [inline]
inode_update_time fs/inode.c:2125 [inline]
__file_update_time fs/inode.c:2353 [inline]
file_update_time+0x3d2/0x450 fs/inode.c:2383
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
do_page_mkwrite+0x198/0x480 mm/memory.c:3176
wp_page_shared mm/memory.c:3577 [inline]
do_wp_page+0x2352/0x5160 mm/memory.c:3727
handle_pte_fault+0x111e/0x68a0 mm/memory.c:5817
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7feb3325ccd7
RSP: 002b:00007ffc54ea3c30 EFLAGS: 00010216
RAX: 0000001b3071ff74 RBX: 00007feb34065720 RCX: 0000000000000002
RDX: 0000001b3071ff70 RSI: 0000000000000004 RDI: 00007feb34065720
RBP: ffffffffffffff74 R08: 00007feb33536118 R09: 00007feb33522000
R10: 00007feb325fd008 R11: 0000000000000008 R12: 000000000000008c
R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000002da
INFO: task syz.0.978:10901 blocked for more than 145 seconds.
Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.978 state:D stack:26288 pid:10901 tgid:10901 ppid:5834 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
io_schedule+0x8d/0x110 kernel/sched/core.c:7681
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x121/0xe60 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
__ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2112 [inline]
inode_update_time fs/inode.c:2125 [inline]
__file_update_time fs/inode.c:2353 [inline]
file_update_time+0x3d2/0x450 fs/inode.c:2383
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
do_page_mkwrite+0x198/0x480 mm/memory.c:3176
do_shared_fault mm/memory.c:5398 [inline]
do_fault mm/memory.c:5460 [inline]
do_pte_missing mm/memory.c:3979 [inline]
handle_pte_fault+0x1235/0x68a0 mm/memory.c:5801
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f8e8c851c11
RSP: 002b:00007ffea4ab0630 EFLAGS: 00010246
RAX: 000000000003fdf0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b30020000 RSI: 0000000000040000 RDI: 00007f8e8ca72290
RBP: 00007ffea4ab088c R08: 0000000000000009 R09: 00007ffea4ab0375
R10: 0000000000000001 R11: 0000000000000293 R12: 0000000000000032
R13: 000000000007498c R14: 0000000000074982 R15: 00007ffea4ab08e0
INFO: task syz.6.980:10927 blocked for more than 145 seconds.
Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.980 state:D stack:26736 pid:10927 tgid:10927 ppid:9413 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
io_schedule+0x8d/0x110 kernel/sched/core.c:7681
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:247
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
do_get_write_access+0x121/0xe60 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x1ee/0x240 fs/jbd2/transaction.c:1245
__ext4_journal_get_write_access+0x1c8/0x680 fs/ext4/ext4_jbd2.c:239
ext4_reserve_inode_write+0x271/0x360 fs/ext4/inode.c:5830
__ext4_mark_inode_dirty+0x1ec/0x880 fs/ext4/inode.c:6004
ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:6041
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2515
generic_update_time fs/inode.c:2112 [inline]
inode_update_time fs/inode.c:2125 [inline]
__file_update_time fs/inode.c:2353 [inline]
file_update_time+0x3d2/0x450 fs/inode.c:2383
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6159
do_page_mkwrite+0x198/0x480 mm/memory.c:3176
do_shared_fault mm/memory.c:5398 [inline]
do_fault mm/memory.c:5460 [inline]
do_pte_missing mm/memory.c:3979 [inline]
handle_pte_fault+0x1235/0x68a0 mm/memory.c:5801
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7faf84651c11
RSP: 002b:00007ffff176d440 EFLAGS: 00010246
RAX: 00000000003ffdf0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b2f020000 RSI: 0000000000400000 RDI: 00007faf84872290
RBP: 00007ffff176d69c R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000011 R11: 0000000000000293 R12: 0000000000000032
R13: 0000000000074cde R14: 000000000007493a R15: 00007ffff176d6f0
Showing all locks held in the system:
4 locks held by kworker/u8:0/11:
#0: ffff8880b873e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
#1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987
#2: ffff8880b872a718 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1050
#3: ffffffff9a67a468 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x17f/0x580 lib/debugobjects.c:818
1 lock held by khungtaskd/31:
#0: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e93c520 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by getty/5589:
#0: ffff8880357520a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900032f32f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by syz-executor/5823:
#0: ffff88807e56c4a8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff88807e56c4a8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
#2: ffff888035762958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
6 locks held by kworker/u8:36/8351:
#0: ffff8880206ca148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff8880206ca148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc9001c25fd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9001c25fd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffff8880357fe0e0 (&type->s_umount_key#31){++++}-{4:4}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
#3: ffff888035760b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_read fs/ext4/ext4.h:1776 [inline]
#3: ffff888035760b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages+0x1bf/0x3c0 fs/ext4/inode.c:2823
#4: ffff888035762958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
#5: ffff88807ef547e0 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x7a6/0x1990 fs/ext4/inode.c:701
3 locks held by syz.5.973/10883:
#0: ffff888028da3148 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff888028da3148 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
#2: ffff888035762958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
3 locks held by syz.1.976/10893:
#0: ffff8880305f5d18 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff8880305f5d18 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
#2: ffff888035762958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
3 locks held by syz.3.979/10898:
#0: ffff888020bb1ec8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff888020bb1ec8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
#2: ffff888035762958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
3 locks held by syz.0.978/10901:
#0: ffff888011eeda90 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff888011eeda90 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
#2: ffff888035762958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
3 locks held by syz.6.980/10927:
#0: ffff88806d62bc40 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff88806d62bc40 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x34b/0x790 mm/memory.c:6278
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1725 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1890 [inline]
#1: ffff8880357fe518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1ef/0xdf0 fs/ext4/inode.c:6158
#2: ffff888035762958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1e94/0x2110 fs/jbd2/transaction.c:448
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 75 Comm: kworker/u8:4 Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lock_acquire+0x9e/0x550 kernel/locking/lockdep.c:5817
Code: ec 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4b 89 04 2c 43 c7 44 2c 09 f2 f2 f2 00 43 c7 44 2c 11 f3 f3 f3 f3 66 43 c7 44 2c 15 f3 f3 <43> c6 44 2c 17 f3 0f 1f 44 00 00 65 8b 05 8c be 92 7e 83 f8 08 0f
RSP: 0018:ffffc900015879e0 EFLAGS: 00000a06
RAX: f2f2f200f1f1f1f1 RBX: ffff8880306d0400 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e93c520
RBP: ffffc90001587b40 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff203846f R12: 1ffff920002b0f44
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffd87b3ff8 CR3: 000000000e738000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244