syzbot

INFO: task syz-executor193:5870 blocked for more than 143 seconds.
      Not tainted 6.12.0-syzkaller-01892-g8f7c8b88bda4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor193 state:D stack:28992 pid:5870  tgid:5859  ppid:5857   flags:0x00000006
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
 schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
 coredump_wait fs/coredump.c:418 [inline]
 do_coredump+0x82f/0x4160 fs/coredump.c:575
 get_signal+0x23f3/0x2610 kernel/signal.c:3001
 arch_do_signal_or_restart+0x90/0x7e0 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:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd835509399
RSP: 002b:00007fd8354a3218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fd835593318 RCX: 00007fd835509399
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd83559331c
RBP: 00007fd835593310 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 00007fd83559331c
R13: 0000000400000004 R14: 00004000000000df R15: 0000300000000000
 </TASK>
INFO: task syz-executor193:5869 blocked for more than 143 seconds.
      Not tainted 6.12.0-syzkaller-01892-g8f7c8b88bda4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor193 state:D stack:28992 pid:5869  tgid:5860  ppid:5858   flags:0x00004006
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
 schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
 coredump_wait fs/coredump.c:418 [inline]
 do_coredump+0x82f/0x4160 fs/coredump.c:575
 get_signal+0x23f3/0x2610 kernel/signal.c:3001
 arch_do_signal_or_restart+0x90/0x7e0 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:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd835509399
RSP: 002b:00007fd8354a3218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fd835593318 RCX: 00007fd835509399
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd83559331c
RBP: 00007fd835593310 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 00007fd83559331c
R13: 0000000400000004 R14: 00004000000000df R15: 0000300000000000
 </TASK>
INFO: task syz-executor193:5872 blocked for more than 144 seconds.
      Not tainted 6.12.0-syzkaller-01892-g8f7c8b88bda4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor193 state:D stack:28992 pid:5872  tgid:5864  ppid:5862   flags:0x00000006
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
 schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
 coredump_wait fs/coredump.c:418 [inline]
 do_coredump+0x82f/0x4160 fs/coredump.c:575
 get_signal+0x23f3/0x2610 kernel/signal.c:3001
 arch_do_signal_or_restart+0x90/0x7e0 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:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd835509399
RSP: 002b:00007fd8354a3218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fd835593318 RCX: 00007fd835509399
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd83559331c
RBP: 00007fd835593310 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 00007fd83559331c
R13: 0000000400000004 R14: 00004000000000df R15: 0000300000000000
 </TASK>
INFO: task syz-executor193:5871 blocked for more than 145 seconds.
      Not tainted 6.12.0-syzkaller-01892-g8f7c8b88bda4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor193 state:D stack:28992 pid:5871  tgid:5865  ppid:5863   flags:0x00004006
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
 schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
 coredump_wait fs/coredump.c:418 [inline]
 do_coredump+0x82f/0x4160 fs/coredump.c:575
 get_signal+0x23f3/0x2610 kernel/signal.c:3001
 arch_do_signal_or_restart+0x90/0x7e0 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:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd835509399
RSP: 002b:00007fd8354a3218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fd835593318 RCX: 00007fd835509399
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd83559331c
RBP: 00007fd835593310 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 00007fd83559331c
R13: 0000000400000004 R14: 00004000000000df R15: 0000300000000000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8ddba680 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8ddba680 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8ddba680 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
2 locks held by getty/5603:
 #0: ffff888034f580a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz-executor193/5861:
1 lock held by syz-executor193/5867:
1 lock held by syz-executor193/5866:
1 lock held by syz-executor193/5868:

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-01892-g8f7c8b88bda4 #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5861 Comm: syz-executor193 Not tainted 6.12.0-syzkaller-01892-g8f7c8b88bda4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:__lock_acquire+0x2d9/0x3c40 kernel/locking/lockdep.c:5161
Code: 89 47 20 48 b8 00 00 00 00 00 fc ff df 80 3c 02 00 0f 85 8e 2b 00 00 48 8b 84 24 30 01 00 00 49 89 47 08 49 8d 47 10 48 89 c2 <48> 89 44 24 50 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02
RSP: 0018:ffffc90003e86eb8 EFLAGS: 00000046
RAX: ffff8880306e0b18 RBX: 0000000000000000 RCX: 0000000000000002
RDX: ffff8880306e0b18 RSI: 1ffff110060dc160 RDI: ffff8880306e0b10
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000005 R11: 00000000b2700790 R12: ffffffff8ddba680
R13: ffff8880306e0000 R14: 0000000000000021 R15: ffff8880306e0b08
FS:  00007fd8354c46c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a176983680 CR3: 0000000074eec000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 filemap_get_entry+0xd6/0x3c0 mm/filemap.c:1839
 __filemap_get_folio+0x59/0xaf0 mm/filemap.c:1887
 filemap_lock_folio include/linux/pagemap.h:788 [inline]
 filemap_lock_hugetlb_folio include/linux/hugetlb.h:795 [inline]
 hugetlbfs_read_iter+0x3d6/0x8d0 fs/hugetlbfs/inode.c:345
 __kernel_read+0x3f1/0xb50 fs/read_write.c:523
 integrity_kernel_read+0x7f/0xb0 security/integrity/iint.c:28
 ima_calc_file_hash_tfm+0x2c9/0x3e0 security/integrity/ima/ima_crypto.c:480
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline]
 ima_calc_file_hash+0x1ba/0x490 security/integrity/ima/ima_crypto.c:568
 ima_collect_measurement+0x8a7/0xa10 security/integrity/ima/ima_api.c:293
 process_measurement+0x1271/0x2370 security/integrity/ima/ima_main.c:372
 ima_file_mmap+0x1b3/0x1e0 security/integrity/ima/ima_main.c:462
 security_mmap_file+0x8bd/0x990 security/security.c:2978
 vm_mmap_pgoff+0xdb/0x360 mm/util.c:584
 ksys_mmap_pgoff+0x1c8/0x5c0 mm/mmap.c:542
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79
 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: 0033:0x7fd835509399
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd8354c4208 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fd835593308 RCX: 00007fd835509399
RDX: 00004000000000df RSI: 0000000400000004 RDI: 0000000000000000
RBP: 00007fd835593300 R08: 00000000000003fe R09: 0000300000000000
R10: 0000000000040eb1 R11: 0000000000000246 R12: 00007fd83559330c
R13: 0000000400000004 R14: 00004000000000df R15: 0000300000000000
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.545 msecs