INFO: task syz.8.24:6682 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.24 state:D stack:27080 pid:6682 tgid:6681 ppid:6655 task_flags:0x400740 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
schedule_timeout+0x257/0x290 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:100 [inline]
__wait_for_common+0x2fc/0x4e0 kernel/sched/completion.c:121
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:269
coredump_wait fs/coredump.c:534 [inline]
vfs_coredump+0x848/0x55e0 fs/coredump.c:1196
get_signal+0x22e1/0x26d0 kernel/signal.c:3019
arch_do_signal_or_restart+0x8f/0x7a0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop+0x8c/0x540 kernel/entry/common.c:75
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f106878d169
RSP: 002b:00007f10695890e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f10689a5fa8 RCX: 00007f106878d169
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f10689a5fac
RBP: 00007f10689a5fa0 R08: 00007f106958a000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f10689a5fac
R13: 0000000000000000 R14: 00007ffe2e17cc90 R15: 00007ffe2e17cd78
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e3c9520 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e3c9520 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8e3c9520 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6775
2 locks held by getty/5596:
#0: ffff88814d32e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x1510 drivers/tty/n_tty.c:2211
1 lock held by syz.0.16/6437:
1 lock held by syz.1.17/6463:
1 lock held by syz.2.18/6486:
1 lock held by syz.3.19/6516:
1 lock held by syz.4.20/6545:
1 lock held by syz.5.21/6575:
1 lock held by syz.6.22/6614:
1 lock held by syz.7.23/6648:
1 lock held by syz.8.24/6683:
1 lock held by syz.9.26/6729:
1 lock held by syz.0.27/6757:
1 lock held by syz.1.29/6794:
1 lock held by syz.2.32/6832:
1 lock held by syz.3.33/6868:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
__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:160 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x133/0x180 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
watchdog+0xe66/0x1180 kernel/hung_task.c:515
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6516 Comm: syz.3.19 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:sha256_transform_rorx+0xfa0/0x1110 lib/crypto/x86/sha256-avx2-asm.S:651
Code: 7b f0 f2 06 45 21 d7 01 f1 45 31 f5 c4 63 7b f0 e1 0d 41 31 c7 c4 63 7b f0 f1 16 89 ce 45 31 e6 c4 63 7b f0 e1 02 03 5c 3c 38 <09> d6 45 31 e6 41 89 cc 44 21 c6 41 21 d4 45 01 ef 41 01 d9 44 09
RSP: 0018:ffffc90003887120 EFLAGS: 00000287
RAX: 0000000044b4756b RBX: 00000000c2d8712e RCX: 00000000502b1de4
RDX: 00000000e571ecb4 RSI: 00000000502b1de4 RDI: 0000000000000140
RBP: ffffc90003887338 R08: 00000000be174ff9 R09: 00000000ff051086
R10: 00000000d8c7b82c R11: 000000004f4b9736 R12: 00000000140ac779
R13: 00000000d524107b R14: 0000000043551018 R15: 000000004c73d567
FS: 00007f893034e6c0(0000) GS:ffff8881249fc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055cf3eca00b0 CR3: 000000003238a000 CR4: 00000000003526f0
Call Trace:
sha256_blocks_avx2+0x49/0x80 lib/crypto/x86/sha256.h:31
sha256_blocks lib/crypto/x86/sha256.h:37 [inline]
__sha256_update+0x123/0x140 lib/crypto/sha256.c:208
crypto_sha256_update+0x23/0x30 crypto/sha256.c:142
crypto_shash_finup+0x360/0x6d0 crypto/shash.c:123
crypto_shash_update include/crypto/hash.h:1006 [inline]
ima_calc_file_hash_tfm+0x297/0x350 security/integrity/ima/ima_crypto.c:491
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+0x8a6/0xa50 security/integrity/ima/ima_api.c:293
process_measurement+0x11b9/0x22d0 security/integrity/ima/ima_main.c:406
ima_file_mmap+0x1b6/0x1e0 security/integrity/ima/ima_main.c:502
security_mmap_file+0x88c/0x990 security/security.c:2504
vm_mmap_pgoff+0xec/0x470 mm/util.c:575
ksys_mmap_pgoff+0x1c8/0x5c0 mm/mmap.c:604
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
__x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f892f58d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f893034e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f892f7a5fa0 RCX: 00007f892f58d169
RDX: 00004000000000df RSI: 0000000400000005 RDI: 0000000000000000
RBP: 00007f892f60e2a0 R08: 0000000000000401 R09: 0000300000000000
R10: 0000000000040eb1 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f892f7a5fa0 R15: 00007ffda5396c58