INFO: task jbd2/sda1-8:5170 blocked for more than 143 seconds. Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jbd2/sda1-8 state:D stack:26032 pid:5170 tgid:5170 ppid:2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 io_schedule+0xbf/0x130 kernel/sched/core.c:7681 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:105 [inline] __wait_on_buffer+0x64/0x70 fs/buffer.c:123 wait_on_buffer include/linux/buffer_head.h:414 [inline] jbd2_journal_commit_transaction+0x3cbb/0x6c80 fs/jbd2/commit.c:810 kjournald2+0x1f8/0x760 fs/jbd2/journal.c:201 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> INFO: task syz-executor:5820 blocked for more than 143 seconds. Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:23072 pid:5820 tgid:5820 ppid:5818 flags:0x00004002 Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 io_schedule+0xbf/0x130 kernel/sched/core.c:7681 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:105 [inline] do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245 __ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830 __ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:6004 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041 __mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2515 generic_update_time+0xcf/0xf0 fs/inode.c:2113 inode_update_time fs/inode.c:2126 [inline] __file_update_time fs/inode.c:2354 [inline] file_update_time+0x17d/0x1c0 fs/inode.c:2384 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6159 do_page_mkwrite+0x177/0x380 mm/memory.c:3162 wp_page_shared mm/memory.c:3563 [inline] do_wp_page+0xcbf/0x49d0 mm/memory.c:3713 handle_pte_fault mm/memory.c:5782 [inline] __handle_mm_fault+0x1a93/0x2a10 mm/memory.c:5909 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6077 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338 handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7f02762678fc RSP: 002b:00007ffcf66e08f0 EFLAGS: 00010202 RAX: 00007f027423c000 RBX: 000055557b7e4450 RCX: 0000000000000004 RDX: 1ffffffff143b78c RSI: 000055557b7ee2e8 RDI: 0000000000000010 RBP: 00007ffcf66e0df0 R08: 000055557b7ee300 R09: 00000000000036f1 R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffcf66e0c40 R13: 0000000000000005 R14: 00007ffcf66e0960 R15: 00007ffcf66e0a30 </TASK> INFO: task kworker/u8:11:6157 blocked for more than 144 seconds. Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:11 state:D stack:23424 pid:6157 tgid:6157 ppid:2 flags:0x00004000 Workqueue: writeback wb_workfn (flush-8:0) Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 io_schedule+0xbf/0x130 kernel/sched/core.c:7681 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:105 [inline] do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245 __ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239 ext4_mb_mark_context+0x1dc/0xdb0 fs/ext4/mballoc.c:4016 ext4_mb_mark_diskspace_used+0x467/0x8c0 fs/ext4/mballoc.c:4133 ext4_mb_new_blocks+0xa33/0x4e80 fs/ext4/mballoc.c:6235 ext4_ext_map_blocks+0x1bca/0x5a30 fs/ext4/extents.c:4379 ext4_map_create_blocks fs/ext4/inode.c:516 [inline] ext4_map_blocks+0x457/0x1370 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+0x198c/0x32f0 fs/ext4/inode.c:2735 ext4_writepages+0x303/0x730 fs/ext4/inode.c:2824 do_writepages+0x1b3/0x820 mm/page-writeback.c:2683 __writeback_single_inode+0x166/0xfa0 fs/fs-writeback.c:1680 writeback_sb_inodes+0x603/0xfa0 fs/fs-writeback.c:1976 __writeback_inodes_wb+0xff/0x2e0 fs/fs-writeback.c:2047 wb_writeback+0x72d/0xb60 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+0x8c3/0xbc0 fs/fs-writeback.c:2343 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> INFO: task syz-executor:20452 blocked for more than 144 seconds. Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:25824 pid:20452 tgid:20452 ppid:5820 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 io_schedule+0xbf/0x130 kernel/sched/core.c:7681 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:105 [inline] do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245 __ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830 __ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:6004 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041 __mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2515 mark_inode_dirty include/linux/fs.h:2485 [inline] ext4_setattr+0x380/0x2a70 fs/ext4/inode.c:5553 notify_change+0x6a6/0x1230 fs/attr.c:552 chmod_common+0x210/0x460 fs/open.c:640 do_fchmodat fs/open.c:686 [inline] __do_sys_chmod fs/open.c:710 [inline] __se_sys_chmod fs/open.c:708 [inline] __x64_sys_chmod+0x108/0x1c0 fs/open.c:708 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f933cb7d057 RSP: 002b:00007ffe7fcb55d8 EFLAGS: 00000202 ORIG_RAX: 000000000000005a RAX: ffffffffffffffda RBX: 00007ffe7fcb5640 RCX: 00007f933cb7d057 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffe7fcb5640 RBP: 0000000000000002 R08: 0000000000000004 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000202 R12: 00007ffe7fcb5640 R13: 00007ffe7fcb5648 R14: 0000000000000009 R15: 0000000000000000 </TASK> INFO: task syz.9.1708:20492 blocked for more than 144 seconds. Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.9.1708 state:D stack:25824 pid:20492 tgid:20492 ppid:17881 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 io_schedule+0xbf/0x130 kernel/sched/core.c:7681 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:105 [inline] do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245 __ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830 __ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:6004 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041 __mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2515 generic_update_time+0xcf/0xf0 fs/inode.c:2113 inode_update_time fs/inode.c:2126 [inline] __file_update_time fs/inode.c:2354 [inline] file_update_time+0x17d/0x1c0 fs/inode.c:2384 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6159 do_page_mkwrite+0x177/0x380 mm/memory.c:3162 do_shared_fault mm/memory.c:5373 [inline] do_fault mm/memory.c:5435 [inline] do_pte_missing+0x29e/0x3e70 mm/memory.c:3965 handle_pte_fault mm/memory.c:5766 [inline] __handle_mm_fault+0x100a/0x2a10 mm/memory.c:5909 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6077 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338 handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7fd22d65d536 RSP: 002b:00007fff3950f530 EFLAGS: 00010202 RAX: 0000000000021008 RBX: 00007fd22e465720 RCX: 0000000000000000 RDX: 0000001b30aff000 RSI: 0000000000000008 RDI: 00007fd22e465720 RBP: ffffffff819cce59 R08: 00007fd22cdff068 R09: 00007fd22d922000 R10: 00007fd22cdff008 R11: 000000000000001c R12: 0000000000000330 R13: 00007fd22d936038 R14: 00000000000000de R15: fffffffffffdf000 </TASK> INFO: task syz.7.1710:20493 blocked for more than 145 seconds. Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.7.1710 state:D stack:27856 pid:20493 tgid:20493 ppid:17874 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 io_schedule+0xbf/0x130 kernel/sched/core.c:7681 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:105 [inline] do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245 __ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830 __ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:6004 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041 __mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2515 generic_update_time+0xcf/0xf0 fs/inode.c:2113 inode_update_time fs/inode.c:2126 [inline] __file_update_time fs/inode.c:2354 [inline] file_update_time+0x17d/0x1c0 fs/inode.c:2384 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6159 do_page_mkwrite+0x177/0x380 mm/memory.c:3162 do_shared_fault mm/memory.c:5373 [inline] do_fault mm/memory.c:5435 [inline] do_pte_missing+0x29e/0x3e70 mm/memory.c:3965 handle_pte_fault mm/memory.c:5766 [inline] __handle_mm_fault+0x100a/0x2a10 mm/memory.c:5909 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6077 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338 handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7fd32b25d536 RSP: 002b:00007fffac815a30 EFLAGS: 00010202 RAX: 0000000000002008 RBX: 00007fd32c065720 RCX: 0000000000000000 RDX: 0000001b3081e000 RSI: 0000000000000008 RDI: 00007fd32c065720 RBP: ffffffff81578177 R08: 00007fd32a9ff050 R09: 00007fd32b522000 R10: 00007fd32a9ff008 R11: 0000000000000001 R12: 0000000000000f6a R13: 00007fd32b536038 R14: 0000000000000107 R15: ffffffffffffe000 </TASK> INFO: task syz.4.1709:20495 blocked for more than 145 seconds. Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.1709 state:D stack:27664 pid:20495 tgid:20495 ppid:17869 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 io_schedule+0xbf/0x130 kernel/sched/core.c:7681 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:105 [inline] do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245 __ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830 __ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:6004 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041 __mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2515 generic_update_time+0xcf/0xf0 fs/inode.c:2113 inode_update_time fs/inode.c:2126 [inline] __file_update_time fs/inode.c:2354 [inline] file_update_time+0x17d/0x1c0 fs/inode.c:2384 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6159 do_page_mkwrite+0x177/0x380 mm/memory.c:3162 do_shared_fault mm/memory.c:5373 [inline] do_fault mm/memory.c:5435 [inline] do_pte_missing+0x29e/0x3e70 mm/memory.c:3965 handle_pte_fault mm/memory.c:5766 [inline] __handle_mm_fault+0x100a/0x2a10 mm/memory.c:5909 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6077 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338 handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7f776365d536 RSP: 002b:00007ffdd6cc4aa0 EFLAGS: 00010202 RAX: 0000000000027008 RBX: 00007f7764465720 RCX: 0000000000000000 RDX: 0000001b309f9000 RSI: 0000000000000008 RDI: 00007f7764465720 RBP: ffffffff813f18ea R08: 00007f7761df9058 R09: 00007f7763922000 R10: 00007f7761df9008 R11: 00000000000000ff R12: 00000000000008be R13: 00007f7763935f40 R14: 0000000000000008 R15: fffffffffffd9000 </TASK> INFO: task syz.2.1711:20499 blocked for more than 146 seconds. Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.1711 state:D stack:25824 pid:20499 tgid:20499 ppid:16036 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe5a/0x5ae0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 io_schedule+0xbf/0x130 kernel/sched/core.c:7681 bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247 __wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xda/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:105 [inline] do_get_write_access+0x933/0x1270 fs/jbd2/transaction.c:1096 jbd2_journal_get_write_access+0x1d6/0x280 fs/jbd2/transaction.c:1245 __ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5830 __ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:6004 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6041 __mark_inode_dirty+0x1f6/0xe60 fs/fs-writeback.c:2515 generic_update_time+0xcf/0xf0 fs/inode.c:2113 inode_update_time fs/inode.c:2126 [inline] __file_update_time fs/inode.c:2354 [inline] file_update_time+0x17d/0x1c0 fs/inode.c:2384 ext4_page_mkwrite+0x368/0x1760 fs/ext4/inode.c:6159 do_page_mkwrite+0x177/0x380 mm/memory.c:3162 do_shared_fault mm/memory.c:5373 [inline] do_fault mm/memory.c:5435 [inline] do_pte_missing+0x29e/0x3e70 mm/memory.c:3965 handle_pte_fault mm/memory.c:5766 [inline] __handle_mm_fault+0x100a/0x2a10 mm/memory.c:5909 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6077 do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338 handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7fe1ce05d536 RSP: 002b:00007ffe2adb78a0 EFLAGS: 00010202 RAX: 0000000000015008 RBX: 00007fe1cee65720 RCX: 0000000000000000 RDX: 0000001b2d40b000 RSI: 0000000000000008 RDI: 00007fe1cee65720 RBP: ffffffff81958dc4 R08: 00007fe1cd7ff058 R09: 00007fe1ce322000 R10: 00007fe1cd7ff008 R11: 0000000000000010 R12: 0000000000000d89 R13: 00007fe1ce336038 R14: 0000000000000186 R15: fffffffffffeb000 </TASK> Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e1bb380 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e1bb380 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e1bb380 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744 2 locks held by getty/5587: #0: ffff8880325b40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002fc62f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211 3 locks held by syz-executor/5820: #0: ffff8880318772f8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline] #0: ffff8880318772f8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6243 #1: ffff888034dc8518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3162 #2: ffff888034dcc958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 6 locks held by kworker/u8:11/6157: #0: ffff888140aea148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc9000501fd80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 #2: ffff888034dc80e0 (&type->s_umount_key#52){++++}-{4:4}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:562 #3: ffff888034dcab98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b3/0x820 mm/page-writeback.c:2683 #4: ffff888034dcc958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 #5: ffff88807850dbb0 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x352/0x1370 fs/ext4/inode.c:701 3 locks held by syz-executor/20452: #0: ffff888034dc8420 (sb_writers#5){.+.+}-{0:0}, at: chmod_common+0x109/0x460 fs/open.c:630 #1: ffff888043c9b580 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline] #1: ffff888043c9b580 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: chmod_common+0x161/0x460 fs/open.c:634 #2: ffff888034dcc958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 3 locks held by syz.9.1708/20492: #0: ffff88805454fb68 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline] #0: ffff88805454fb68 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6243 #1: ffff888034dc8518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3162 #2: ffff888034dcc958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 3 locks held by syz.7.1710/20493: #0: ffff8880255d5b68 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline] #0: ffff8880255d5b68 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6243 #1: ffff888034dc8518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3162 #2: ffff888034dcc958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 3 locks held by syz.4.1709/20495: #0: ffff88806e1f34a8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline] #0: ffff88806e1f34a8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6243 #1: ffff888034dc8518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3162 #2: ffff888034dcc958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 3 locks held by syz.2.1711/20499: #0: ffff8880294bd220 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline] #0: ffff8880294bd220 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6243 #1: ffff888034dc8518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3162 #2: ffff888034dcc958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448 1 lock held by init/20503: #0: ffff88802e03f148 (&sig->cred_guard_mutex){+.+.}-{4:4}, at: prepare_bprm_creds fs/exec.c:1464 [inline] #0: ffff88802e03f148 (&sig->cred_guard_mutex){+.+.}-{4:4}, at: bprm_execve+0xa5/0x1960 fs/exec.c:1825 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf0c/0x1240 kernel/hung_task.c:379 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 19936 Comm: kworker/u8:0 Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:89 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x105/0x1a0 mm/kasan/generic.c:189 Code: 75 0a 45 3a 11 b8 01 00 00 00 7c 0b 44 89 c2 e8 81 ea ff ff 83 f0 01 5b 5d 41 5c c3 cc cc cc cc 48 85 d2 74 4f 48 01 ea eb 09 <48> 83 c0 01 48 39 d0 74 41 80 38 00 74 f2 eb b2 41 bc 08 00 00 00 RSP: 0018:ffffc9000373f940 EFLAGS: 00000246 RAX: fffff520006e7f46 RBX: fffff520006e7f4e RCX: ffffffff8b2001e5 RDX: fffff520006e7f4e RSI: 0000000000000070 RDI: ffffc9000373fa00 RBP: fffff520006e7f40 R08: 0000000000000001 R09: fffff520006e7f4d R10: ffffc9000373fa6f R11: 0000000000000004 R12: 0000000000000000 R13: ffffffff81e60af3 R14: ffffffff81e60af3 R15: ffffffff8db0f330 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055fedbbf34f0 CR3: 000000003505e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <TASK> __asan_memset+0x23/0x50 mm/kasan/shadow.c:84 insn_init+0x35/0x180 arch/x86/lib/insn.c:70 insn_decode+0x2bf/0x320 arch/x86/lib/insn.c:758 arch_jump_entry_size+0xb3/0x150 arch/x86/kernel/jump_label.c:24 __jump_label_patch+0x85/0x400 arch/x86/kernel/jump_label.c:45 arch_jump_label_transform_queue+0x7e/0x120 arch/x86/kernel/jump_label.c:137 __jump_label_update+0x125/0x420 kernel/jump_label.c:513 jump_label_update+0x1d7/0x400 kernel/jump_label.c:920 static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate mm/kfence/core.c:849 [inline] toggle_allocation_gate+0xfc/0x260 mm/kfence/core.c:841 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK>