INFO: task syz.0.7:5830 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.7         state:D stack:25144 pid:5830  tgid:5826  ppid:5583   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x16dc/0x5500 kernel/sched/core.c:7228
 __schedule_loop kernel/sched/core.c:7307 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7322
 io_schedule+0x80/0xe0 kernel/sched/core.c:8150
 folio_wait_bit_common+0x83c/0xbc0 mm/filemap.c:1324
 folio_lock include/linux/pagemap.h:1159 [inline]
 release_metapage+0x101/0xa50 fs/jfs/jfs_metapage.c:871
 discard_metapage fs/jfs/jfs_metapage.h:88 [inline]
 __get_metapage+0x9ac/0xdf0 fs/jfs/jfs_metapage.c:754
 dtSearch+0x56c/0x2010 fs/jfs/jfs_dtree.c:621
 jfs_lookup+0x1b0/0x420 fs/jfs/namei.c:1464
 __lookup_slow+0x1fb/0x2f0 fs/namei.c:1919
 lookup_slow+0x53/0x70 fs/namei.c:1936
 walk_component fs/namei.c:2282 [inline]
 lookup_last fs/namei.c:2789 [inline]
 path_lookupat+0x3f5/0x8c0 fs/namei.c:2813
 filename_lookup+0x265/0x5d0 fs/namei.c:2842
 __do_sys_chdir fs/open.c:557 [inline]
 __se_sys_chdir+0xa8/0x2a0 fs/open.c:550
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26fd32ce59
RSP: 002b:00007f26fb565028 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007f26fd5a6090 RCX: 00007f26fd32ce59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000240
RBP: 00007f26fd3c2d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f26fd5a6128 R14: 00007f26fd5a6090 R15: 00007ffc1a3d7f48
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xfd7/0x1030 kernel/hung_task.c:561
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9110 Comm: syz.9.412 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:ptlock_ptr include/linux/mm.h:3697 [inline]
RIP: 0010:pte_lockptr include/linux/mm.h:3721 [inline]
RIP: 0010:pte_offset_map_rw_nolock+0x112/0x160 mm/pgtable-generic.c:332
Code: aa ff 4c 21 e5 48 c1 ed 06 4c 8d 3c 2d 28 00 00 00 4d 01 ef 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 <74> 08 4c 89 ff e8 f4 6d 13 00 4d 8b 3f 48 89 d8 48 c1 e8 03 42 80
RSP: 0000:ffffc9000b1e7c68 EFLAGS: 00000246
RAX: 1ffffd40002eb325 RBX: ffffc9000b1e7dc0 RCX: ffff888030951f00
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000001759900 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000b1e7d8c R11: fffff5200163cfba R12: dffffc0000000000
R13: ffffea0000000000 R14: ffff88805d664810 R15: ffffea0001759928
FS:  00007f31abbb66c0(0000) GS:ffff88812615d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31a3f02000 CR3: 00000000316ee000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 handle_pte_fault mm/memory.c:6412 [inline]
 __handle_mm_fault mm/memory.c:6565 [inline]
 handle_mm_fault+0x8b0/0x13f0 mm/memory.c:6734
 do_user_addr_fault+0xa4d/0x1340 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f31ad8141ce
Code: c1 49 39 4f 08 72 54 8d 4d ff 85 ed 74 3b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 <47> 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01
RSP: 002b:00007f31abbb5470 EFLAGS: 00010206
RAX: 000000000076c001 RBX: 00007f31abbb5530 RCX: 0000000000000028
RDX: 0000000000000015 RSI: 0000000000000001 RDI: 00007f31abbb55d0
RBP: 0000000000000102 R08: 00007f31a3796000 R09: 000000000076c000
R10: 0000000000000000 R11: 00007f31abbb5540 R12: 0000000000000001
R13: 00007f31ada12980 R14: 0000000000000000 R15: 00007f31abbb55d0
 </TASK>