INFO: task jbd2/sda1-8:74 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8     state:D stack:0     pid:74    tgid:74    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 io_schedule+0x85/0x150 kernel/sched/core.c:8790
 bit_wait_io+0x17/0xd0 kernel/sched/wait_bit.c:209
 __wait_on_bit+0xb6/0x2e0 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0x139/0x190 kernel/sched/wait_bit.c:64
 wait_on_bit_io include/linux/wait_bit.h:101 [inline]
 __wait_on_buffer+0x5a/0x70 fs/buffer.c:123
 wait_on_buffer include/linux/buffer_head.h:422 [inline]
 jbd2_write_superblock+0x442/0x800 fs/jbd2/journal.c:1834
 jbd2_journal_update_sb_log_tail+0x216/0x2e0 fs/jbd2/journal.c:1882
 jbd2_journal_commit_transaction+0x406/0x5510 fs/jbd2/commit.c:397
 kjournald2+0x386/0x6a0 fs/jbd2/journal.c:201
 kthread+0x2c4/0x360 kernel/kthread.c:389
 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz-executor:287 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:287   tgid:287   ppid:286    flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 start_this_handle+0x56e/0x2050 fs/jbd2/transaction.c:384
 jbd2__journal_start+0x300/0x860 fs/jbd2/transaction.c:505
 __ext4_journal_start_sb+0x111/0x3f0 fs/ext4/ext4_jbd2.c:112
 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
 ext4_dirty_inode+0x97/0x110 fs/ext4/inode.c:6100
 __mark_inode_dirty+0x24e/0xc50 fs/fs-writeback.c:2515
 generic_update_time fs/inode.c:2056 [inline]
 inode_update_time fs/inode.c:2069 [inline]
 __file_update_time fs/inode.c:2258 [inline]
 file_update_time+0x1d3/0x210 fs/inode.c:2288
 ext4_page_mkwrite+0x2bf/0x1120 fs/ext4/inode.c:6221
 do_page_mkwrite mm/memory.c:3263 [inline]
 wp_page_shared mm/memory.c:3665 [inline]
 do_wp_page+0xb3d/0x2e80 mm/memory.c:3815
 handle_pte_fault mm/memory.c:5956 [inline]
 __handle_mm_fault mm/memory.c:6083 [inline]
 handle_mm_fault+0x1017/0x1ba0 mm/memory.c:6251
 do_user_addr_fault+0x951/0x1230 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1479 [inline]
 exc_page_fault+0x58/0xc0 arch/x86/mm/fault.c:1534
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f16b287c6e2
RSP: 002b:00007ffcfaa5da40 EFLAGS: 00010202
RAX: 00007f16b0810000 RBX: 0000555574207aa0 RCX: 0000000000000006
RDX: 00000000000012d2 RSI: 000055557420fb48 RDI: 0000000000000040
RBP: 00007ffcfaa5df40 R08: 000055557420fb48 R09: 0000000000000049
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffcfaa5dd80
R13: 00007ffcfaa5db70 R14: 585858582e7a7973 R15: 00007ffcfaa5dac0
 </TASK>
INFO: task syz.3.358:1569 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.358       state:D stack:0     pid:1569  tgid:1569  ppid:298    flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 io_schedule+0x85/0x150 kernel/sched/core.c:8790
 folio_wait_bit_common+0x6a4/0x940 mm/filemap.c:1379
 __folio_lock mm/filemap.c:1758 [inline]
 lock_folio_maybe_drop_mmap mm/filemap.c:3303 [inline]
 filemap_fault+0xc8e/0x1ad0 mm/filemap.c:3600
 __do_fault mm/memory.c:5009 [inline]
 do_read_fault mm/memory.c:5461 [inline]
 do_fault mm/memory.c:5595 [inline]
 do_pte_missing+0x364c/0x4440 mm/memory.c:4069
 handle_pte_fault mm/memory.c:5940 [inline]
 __handle_mm_fault mm/memory.c:6083 [inline]
 handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
 faultin_page mm/gup.c:1207 [inline]
 __get_user_pages+0x114b/0x22d0 mm/gup.c:1508
 __get_user_pages_locked mm/gup.c:1774 [inline]
 get_dump_page+0x10c/0x220 mm/gup.c:2292
 dump_user_range+0x18b/0xe60 fs/coredump.c:997
 elf_core_dump+0x2d61/0x3840 fs/binfmt_elf.c:2143
 do_coredump+0x20d5/0x3050 fs/coredump.c:812
 get_signal+0x11bf/0x1490 kernel/signal.c:2918
 arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1537
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff2ae39e161
RSP: 002b:fffffffffffffea0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff2ae626180 RCX: 00007ff2ae39e159
RDX: 0000000000000000 RSI: fffffffffffffea0 RDI: 0000000000000000
RBP: 00007ff2ae435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff2ae626218 R14: 00007ff2ae626180 R15: 00007ffc08662768
 </TASK>
INFO: task syz.3.358:1580 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.358       state:D stack:0     pid:1580  tgid:1580  ppid:298    flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 io_schedule+0x85/0x150 kernel/sched/core.c:8790
 rq_qos_wait+0x25f/0x400 block/blk-rq-qos.c:284
 __wbt_wait block/blk-wbt.c:596 [inline]
 wbt_wait+0x297/0x680 block/blk-wbt.c:661
 __rq_qos_throttle+0x7a/0xd0 block/blk-rq-qos.c:67
 rq_qos_throttle block/blk-rq-qos.h:151 [inline]
 blk_mq_get_new_requests block/blk-mq.c:3081 [inline]
 blk_mq_submit_bio+0xf65/0x2420 block/blk-mq.c:3233
 __submit_bio+0x223/0x9b0 block/blk-core.c:637
 __submit_bio_noacct_mq block/blk-core.c:724 [inline]
 submit_bio_noacct_nocheck+0x43c/0xab0 block/blk-core.c:753
 submit_bio_noacct+0xc0e/0x1620 block/blk-core.c:876
 submit_bio+0x424/0x5b0 block/blk-core.c:951
 swap_writepage_bdev_async mm/page_io.c:460 [inline]
 __swap_writepage+0xd58/0x22b0 mm/page_io.c:488
 swap_writepage+0x5ca/0xcd0 mm/page_io.c:296
 shmem_writepage+0xf3b/0x12d0 mm/shmem.c:1632
 pageout mm/vmscan.c:709 [inline]
 shrink_folio_list+0x3a52/0x4ed0 mm/vmscan.c:1481
 shrink_inactive_list mm/vmscan.c:2126 [inline]
 shrink_list mm/vmscan.c:2396 [inline]
 shrink_lruvec+0x1b94/0x2d40 mm/vmscan.c:6023
 shrink_node_memcgs mm/vmscan.c:6244 [inline]
 shrink_node+0xbbe/0x44c0 mm/vmscan.c:6292
 shrink_zones mm/vmscan.c:6539 [inline]
 do_try_to_free_pages+0x7ce/0x1ee0 mm/vmscan.c:6619
 try_to_free_mem_cgroup_pages+0x288/0x630 mm/vmscan.c:6964
 try_charge_memcg+0x472/0xe10 mm/memcontrol.c:2283
 try_charge mm/memcontrol-v1.h:19 [inline]
 charge_memcg mm/memcontrol.c:4563 [inline]
 __mem_cgroup_charge+0xfc/0x420 mm/memcontrol.c:4579
 mem_cgroup_charge include/linux/memcontrol.h:710 [inline]
 shmem_alloc_and_add_folio+0x8e4/0x10b0 mm/shmem.c:1893
 shmem_get_folio_gfp+0x5cd/0x12e0 mm/shmem.c:2451
 shmem_get_folio mm/shmem.c:2559 [inline]
 shmem_write_begin+0xf4/0x260 mm/shmem.c:3162
 generic_perform_write+0x329/0x970 mm/filemap.c:4337
 shmem_file_write_iter+0x105/0x130 mm/shmem.c:3336
 __kernel_write_iter+0x45f/0x900 fs/read_write.c:617
 dump_emit_page fs/coredump.c:938 [inline]
 dump_user_range+0xb8b/0xe60 fs/coredump.c:999
 elf_core_dump+0x2d61/0x3840 fs/binfmt_elf.c:2143
 do_coredump+0x20d5/0x3050 fs/coredump.c:812
 get_signal+0x11bf/0x1490 kernel/signal.c:2918
 arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1537
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff2ae39e161
RSP: 002b:fffffffffffffea0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff2ae626180 RCX: 00007ff2ae39e159
RDX: 0000000000000000 RSI: fffffffffffffea0 RDI: 0000000000000000
RBP: 00007ff2ae435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff2ae626218 R14: 00007ff2ae626180 R15: 00007ffc08662768
 </TASK>
INFO: task syz.3.358:1585 blocked for more than 124 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.358       state:D stack:0     pid:1585  tgid:1585  ppid:298    flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 io_schedule+0x85/0x150 kernel/sched/core.c:8790
 folio_wait_bit_common+0x6a4/0x940 mm/filemap.c:1379
 __folio_lock mm/filemap.c:1758 [inline]
 __folio_lock_or_retry+0x130/0x4b0 mm/filemap.c:1835
 folio_lock_or_retry include/linux/pagemap.h:1220 [inline]
 do_swap_page+0x6d0/0x4b30 mm/memory.c:4472
 handle_pte_fault mm/memory.c:5943 [inline]
 __handle_mm_fault mm/memory.c:6083 [inline]
 handle_mm_fault+0x1238/0x1ba0 mm/memory.c:6251
 faultin_page mm/gup.c:1207 [inline]
 __get_user_pages+0x114b/0x22d0 mm/gup.c:1508
 __get_user_pages_locked mm/gup.c:1774 [inline]
 get_dump_page+0x10c/0x220 mm/gup.c:2292
 dump_user_range+0x18b/0xe60 fs/coredump.c:997
 elf_core_dump+0x2d61/0x3840 fs/binfmt_elf.c:2143
 do_coredump+0x20d5/0x3050 fs/coredump.c:812
 get_signal+0x11bf/0x1490 kernel/signal.c:2918
 arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1537
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff2ae39e161
RSP: 002b:fffffffffffffea0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff2ae626180 RCX: 00007ff2ae39e159
RDX: 0000000000000000 RSI: fffffffffffffea0 RDI: 0000000000000000
RBP: 00007ff2ae435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff2ae626218 R14: 00007ff2ae626180 R15: 00007ffc08662768
 </TASK>
INFO: task syz.3.358:1586 blocked for more than 125 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.358       state:D stack:0     pid:1586  tgid:1586  ppid:298    flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 io_schedule+0x85/0x150 kernel/sched/core.c:8790
 folio_wait_bit_common+0x6a4/0x940 mm/filemap.c:1379
 __folio_lock mm/filemap.c:1758 [inline]
 lock_folio_maybe_drop_mmap mm/filemap.c:3303 [inline]
 filemap_fault+0xc8e/0x1ad0 mm/filemap.c:3600
 __do_fault mm/memory.c:5009 [inline]
 do_read_fault mm/memory.c:5461 [inline]
 do_fault mm/memory.c:5595 [inline]
 do_pte_missing+0x364c/0x4440 mm/memory.c:4069
 handle_pte_fault mm/memory.c:5940 [inline]
 __handle_mm_fault mm/memory.c:6083 [inline]
 handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
 faultin_page mm/gup.c:1207 [inline]
 __get_user_pages+0x114b/0x22d0 mm/gup.c:1508
 __get_user_pages_locked mm/gup.c:1774 [inline]
 get_dump_page+0x10c/0x220 mm/gup.c:2292
 dump_user_range+0x18b/0xe60 fs/coredump.c:997
 elf_core_dump+0x2d61/0x3840 fs/binfmt_elf.c:2143
 do_coredump+0x20d5/0x3050 fs/coredump.c:812
 get_signal+0x11bf/0x1490 kernel/signal.c:2918
 arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1537
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff2ae39e161
RSP: 002b:fffffffffffffea0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff2ae626180 RCX: 00007ff2ae39e159
RDX: 0000000000000000 RSI: fffffffffffffea0 RDI: 0000000000000000
RBP: 00007ff2ae435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff2ae626218 R14: 00007ff2ae626180 R15: 00007ffc08662768
 </TASK>
INFO: task syz.3.358:1587 blocked for more than 125 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.358       state:D stack:0     pid:1587  tgid:1587  ppid:298    flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 io_schedule+0x85/0x150 kernel/sched/core.c:8790
 rq_qos_wait+0x25f/0x400 block/blk-rq-qos.c:284
 __wbt_wait block/blk-wbt.c:596 [inline]
 wbt_wait+0x297/0x680 block/blk-wbt.c:661
 __rq_qos_throttle+0x7a/0xd0 block/blk-rq-qos.c:67
 rq_qos_throttle block/blk-rq-qos.h:151 [inline]
 blk_mq_get_new_requests block/blk-mq.c:3081 [inline]
 blk_mq_submit_bio+0xf65/0x2420 block/blk-mq.c:3233
 __submit_bio+0x223/0x9b0 block/blk-core.c:637
 __submit_bio_noacct_mq block/blk-core.c:724 [inline]
 submit_bio_noacct_nocheck+0x43c/0xab0 block/blk-core.c:753
 submit_bio_noacct+0xc0e/0x1620 block/blk-core.c:876
 submit_bio+0x424/0x5b0 block/blk-core.c:951
 swap_writepage_bdev_async mm/page_io.c:460 [inline]
 __swap_writepage+0xd58/0x22b0 mm/page_io.c:488
 swap_writepage+0x5ca/0xcd0 mm/page_io.c:296
 shmem_writepage+0xf3b/0x12d0 mm/shmem.c:1632
 pageout mm/vmscan.c:709 [inline]
 shrink_folio_list+0x3a52/0x4ed0 mm/vmscan.c:1481
 shrink_inactive_list mm/vmscan.c:2126 [inline]
 shrink_list mm/vmscan.c:2396 [inline]
 shrink_lruvec+0x1b94/0x2d40 mm/vmscan.c:6023
 shrink_node_memcgs mm/vmscan.c:6244 [inline]
 shrink_node+0xbbe/0x44c0 mm/vmscan.c:6292
 shrink_zones mm/vmscan.c:6539 [inline]
 do_try_to_free_pages+0x7ce/0x1ee0 mm/vmscan.c:6619
 try_to_free_mem_cgroup_pages+0x288/0x630 mm/vmscan.c:6964
 try_charge_memcg+0x472/0xe10 mm/memcontrol.c:2283
 try_charge mm/memcontrol-v1.h:19 [inline]
 charge_memcg mm/memcontrol.c:4563 [inline]
 __mem_cgroup_charge+0xfc/0x420 mm/memcontrol.c:4579
 mem_cgroup_charge include/linux/memcontrol.h:710 [inline]
 shmem_alloc_and_add_folio+0x8e4/0x10b0 mm/shmem.c:1893
 shmem_get_folio_gfp+0x5cd/0x12e0 mm/shmem.c:2451
 shmem_get_folio mm/shmem.c:2559 [inline]
 shmem_write_begin+0xf4/0x260 mm/shmem.c:3162
 generic_perform_write+0x329/0x970 mm/filemap.c:4337
 shmem_file_write_iter+0x105/0x130 mm/shmem.c:3336
 __kernel_write_iter+0x45f/0x900 fs/read_write.c:617
 dump_emit_page fs/coredump.c:938 [inline]
 dump_user_range+0xb8b/0xe60 fs/coredump.c:999
 elf_core_dump+0x2d61/0x3840 fs/binfmt_elf.c:2143
 do_coredump+0x20d5/0x3050 fs/coredump.c:812
 get_signal+0x11bf/0x1490 kernel/signal.c:2918
 arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1537
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff2ae39e161
RSP: 002b:fffffffffffffea0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff2ae626180 RCX: 00007ff2ae39e159
RDX: 0000000000000000 RSI: fffffffffffffea0 RDI: 0000000000000000
RBP: 00007ff2ae435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff2ae626218 R14: 00007ff2ae626180 R15: 00007ffc08662768
 </TASK>
INFO: task syz.3.358:1588 blocked for more than 126 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.358       state:D stack:0     pid:1588  tgid:1588  ppid:298    flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 io_schedule+0x85/0x150 kernel/sched/core.c:8790
 rq_qos_wait+0x25f/0x400 block/blk-rq-qos.c:284
 __wbt_wait block/blk-wbt.c:596 [inline]
 wbt_wait+0x297/0x680 block/blk-wbt.c:661
 __rq_qos_throttle+0x7a/0xd0 block/blk-rq-qos.c:67
 rq_qos_throttle block/blk-rq-qos.h:151 [inline]
 blk_mq_get_new_requests block/blk-mq.c:3081 [inline]
 blk_mq_submit_bio+0xf65/0x2420 block/blk-mq.c:3233
 __submit_bio+0x223/0x9b0 block/blk-core.c:637
 __submit_bio_noacct_mq block/blk-core.c:724 [inline]
 submit_bio_noacct_nocheck+0x43c/0xab0 block/blk-core.c:753
 submit_bio_noacct+0xc0e/0x1620 block/blk-core.c:876
 submit_bio+0x424/0x5b0 block/blk-core.c:951
 swap_writepage_bdev_async mm/page_io.c:460 [inline]
 __swap_writepage+0xd58/0x22b0 mm/page_io.c:488
 swap_writepage+0x5ca/0xcd0 mm/page_io.c:296
 shmem_writepage+0xf3b/0x12d0 mm/shmem.c:1632
 pageout mm/vmscan.c:709 [inline]
 shrink_folio_list+0x3a52/0x4ed0 mm/vmscan.c:1481
 shrink_inactive_list mm/vmscan.c:2126 [inline]
 shrink_list mm/vmscan.c:2396 [inline]
 shrink_lruvec+0x1b94/0x2d40 mm/vmscan.c:6023
 shrink_node_memcgs mm/vmscan.c:6244 [inline]
 shrink_node+0xbbe/0x44c0 mm/vmscan.c:6292
 shrink_zones mm/vmscan.c:6539 [inline]
 do_try_to_free_pages+0x7ce/0x1ee0 mm/vmscan.c:6619
 try_to_free_mem_cgroup_pages+0x288/0x630 mm/vmscan.c:6964
 try_charge_memcg+0x472/0xe10 mm/memcontrol.c:2283
 try_charge mm/memcontrol-v1.h:19 [inline]
 charge_memcg mm/memcontrol.c:4563 [inline]
 __mem_cgroup_charge+0xfc/0x420 mm/memcontrol.c:4579
 mem_cgroup_charge include/linux/memcontrol.h:710 [inline]
 shmem_alloc_and_add_folio+0x8e4/0x10b0 mm/shmem.c:1893
 shmem_get_folio_gfp+0x5cd/0x12e0 mm/shmem.c:2451
 shmem_get_folio mm/shmem.c:2559 [inline]
 shmem_write_begin+0xf4/0x260 mm/shmem.c:3162
 generic_perform_write+0x329/0x970 mm/filemap.c:4337
 shmem_file_write_iter+0x105/0x130 mm/shmem.c:3336
 __kernel_write_iter+0x45f/0x900 fs/read_write.c:617
 dump_emit_page fs/coredump.c:938 [inline]
 dump_user_range+0xb8b/0xe60 fs/coredump.c:999
 elf_core_dump+0x2d61/0x3840 fs/binfmt_elf.c:2143
 do_coredump+0x20d5/0x3050 fs/coredump.c:812
 get_signal+0x11bf/0x1490 kernel/signal.c:2918
 arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1537
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff2ae39e161
RSP: 002b:fffffffffffffea0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff2ae626180 RCX: 00007ff2ae39e159
RDX: 0000000000000000 RSI: fffffffffffffea0 RDI: 0000000000000000
RBP: 00007ff2ae435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff2ae626218 R14: 00007ff2ae626180 R15: 00007ffc08662768
 </TASK>
INFO: task syz.3.358:1589 blocked for more than 127 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.358       state:D stack:0     pid:1589  tgid:1589  ppid:298    flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 io_schedule+0x85/0x150 kernel/sched/core.c:8790
 folio_wait_bit_common+0x6a4/0x940 mm/filemap.c:1379
 __folio_lock mm/filemap.c:1758 [inline]
 lock_folio_maybe_drop_mmap mm/filemap.c:3303 [inline]
 filemap_fault+0xc8e/0x1ad0 mm/filemap.c:3600
 __do_fault mm/memory.c:5009 [inline]
 do_read_fault mm/memory.c:5461 [inline]
 do_fault mm/memory.c:5595 [inline]
 do_pte_missing+0x364c/0x4440 mm/memory.c:4069
 handle_pte_fault mm/memory.c:5940 [inline]
 __handle_mm_fault mm/memory.c:6083 [inline]
 handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
 faultin_page mm/gup.c:1207 [inline]
 __get_user_pages+0x114b/0x22d0 mm/gup.c:1508
 __get_user_pages_locked mm/gup.c:1774 [inline]
 get_dump_page+0x10c/0x220 mm/gup.c:2292
 dump_user_range+0x18b/0xe60 fs/coredump.c:997
 elf_core_dump+0x2d61/0x3840 fs/binfmt_elf.c:2143
 do_coredump+0x20d5/0x3050 fs/coredump.c:812
 get_signal+0x11bf/0x1490 kernel/signal.c:2918
 arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1537
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff2ae39e161
RSP: 002b:fffffffffffffea0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff2ae626180 RCX: 00007ff2ae39e159
RDX: 0000000000000000 RSI: fffffffffffffea0 RDI: 0000000000000000
RBP: 00007ff2ae435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff2ae626218 R14: 00007ff2ae626180 R15: 00007ffc08662768
 </TASK>
INFO: task syz.3.358:1591 blocked for more than 127 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.358       state:D stack:0     pid:1591  tgid:1591  ppid:298    flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 io_schedule+0x85/0x150 kernel/sched/core.c:8790
 folio_wait_bit_common+0x6a4/0x940 mm/filemap.c:1379
 __folio_lock mm/filemap.c:1758 [inline]
 lock_folio_maybe_drop_mmap mm/filemap.c:3303 [inline]
 filemap_fault+0xc8e/0x1ad0 mm/filemap.c:3600
 __do_fault mm/memory.c:5009 [inline]
 do_read_fault mm/memory.c:5461 [inline]
 do_fault mm/memory.c:5595 [inline]
 do_pte_missing+0x364c/0x4440 mm/memory.c:4069
 handle_pte_fault mm/memory.c:5940 [inline]
 __handle_mm_fault mm/memory.c:6083 [inline]
 handle_mm_fault+0x1189/0x1ba0 mm/memory.c:6251
 faultin_page mm/gup.c:1207 [inline]
 __get_user_pages+0x114b/0x22d0 mm/gup.c:1508
 __get_user_pages_locked mm/gup.c:1774 [inline]
 get_dump_page+0x10c/0x220 mm/gup.c:2292
 dump_user_range+0x18b/0xe60 fs/coredump.c:997
 elf_core_dump+0x2d61/0x3840 fs/binfmt_elf.c:2143
 do_coredump+0x20d5/0x3050 fs/coredump.c:812
 get_signal+0x11bf/0x1490 kernel/signal.c:2918
 arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4d/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x65/0xc0 arch/x86/mm/fault.c:1537
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7ff2ae39e161
RSP: 002b:fffffffffffffea0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff2ae626180 RCX: 00007ff2ae39e159
RDX: 0000000000000000 RSI: fffffffffffffea0 RDI: 0000000000000000
RBP: 00007ff2ae435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff2ae626218 R14: 00007ff2ae626180 R15: 00007ffc08662768
 </TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 1f46b48b3a0ef7537d643c2c4b1d5e30032b8167
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2ba/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xe45/0xf90 kernel/hung_task.c:423
 kthread+0x2c4/0x360 kernel/kthread.c:389
 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
 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: 0 Comm: swapper/0 Not tainted syzkaller #0 1f46b48b3a0ef7537d643c2c4b1d5e30032b8167
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:116
Code: cc cc cc cc cc cc cc b8 f2 84 9d 5b 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 03 68 42 00 55 48 89 e5 fb f4 <5d> c3 cc cc cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90
RSP: 0018:ffffffff87407da0 EFLAGS: 000002c2
RAX: ffff8881f6e00000 RBX: ffffffff874156c0 RCX: ffffffff85a4f4fd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 00000000001e5e34
RBP: ffffffff87407da0 R08: ffff8881f6e395eb R09: 1ffff1103edc72bd
R10: dffffc0000000000 R11: ffffed103edc72be R12: 0000000000000000
R13: 1ffffffff0e82ad8 R14: dffffc0000000000 R15: ffffffff87ecd7e8
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005631e82b9c80 CR3: 000000010c7f8000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:-1 [inline]
 default_idle+0x17/0x30 arch/x86/kernel/process.c:754
 arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:791
 default_idle_call+0x3e/0x80 kernel/sched/idle.c:117
 cpuidle_idle_call kernel/sched/idle.c:193 [inline]
 do_idle+0x1df/0x570 kernel/sched/idle.c:346
 cpu_startup_entry+0x47/0x60 kernel/sched/idle.c:445
 rest_init+0x10b/0x130 init/main.c:760
 start_kernel+0x462/0x4bb init/main.c:1242
 x86_64_start_reservations+0x2e/0x30 arch/x86/kernel/head64.c:507
 x86_64_start_kernel+0x6a/0x7b arch/x86/kernel/head64.c:488
 common_startup_64+0x13b/0x157
 </TASK>