INFO: task syz.2.750:9106 blocked for more than 143 seconds. Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.750 state:D stack:29192 pid:9106 tgid:9101 ppid:5841 task_flags:0x400640 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5367 [inline] __schedule+0x1129/0x5c00 kernel/sched/core.c:6748 __schedule_loop kernel/sched/core.c:6825 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6840 schedule_timeout+0x242/0x280 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x3df/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:419 [inline] do_coredump+0x887/0x44a0 fs/coredump.c:576 get_signal+0x22ed/0x26a0 kernel/signal.c:3020 arch_do_signal_or_restart+0x8f/0x7d0 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/0x260 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fea7bb8d169 RSP: 002b:00007fea7ca850e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007fea7bda6088 RCX: 00007fea7bb8d169 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fea7bda608c RBP: 00007fea7bda6080 R08: 00007fea7caa7000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fea7bda608c R13: 0000000000000000 R14: 00007ffe5235e410 R15: 00007ffe5235e4f8 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffffffff8e1be0c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8e1be0c0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8e1be0c0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6761 3 locks held by kworker/u8:2/36: #0: ffff8880b8639ed8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:595 #1: ffff8880b8623c48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987 #2: ffff8880b86256d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x127/0x1d0 kernel/time/timer.c:1046 2 locks held by kworker/u8:7/3018: #0: ffff8880b8639ed8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:595 #1: ffff8880b8623c48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987 2 locks held by kworker/u8:8/3491: #0: ffff8880b8739ed8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:595 #1: ffff8880b8723c48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987 2 locks held by getty/5598: #0: ffff8880312860a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002fd62f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfa1/0x1450 drivers/tty/n_tty.c:2211 1 lock held by syz.2.750/9102: ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 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:158 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline] watchdog+0xf70/0x12c0 kernel/hung_task.c:399 kthread+0x3a4/0x760 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 9102 Comm: syz.2.750 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:sha256_transform_rorx+0x623/0x1120 arch/x86/crypto/sha256-avx2-asm.S:605 Code: d9 c4 43 7b f0 e3 02 45 31 cf c5 e5 ef da 45 31 e6 45 89 dc 41 21 dc 45 01 ef c4 c1 65 ef c8 c5 fd 70 d5 fa 44 09 e6 45 01 f2 fd fe c1 44 01 f9 45 01 fa 41 01 f2 c5 bd 72 d2 0a 44 89 d6 c4 RSP: 0018:ffffc900037bf1c0 EFLAGS: 00000a92 RAX: 00000000963de184 RBX: 00000000d2a5bee0 RCX: 000000007fe7f1f2 RDX: 00000000daa72e01 RSI: 00000000d2b5fa80 RDI: 0000000000000100 RBP: ffffc900037bf3e0 R08: 000000008ee44b8d R09: 00000000512fd186 R10: 00000000df288570 R11: 00000000c9d27a0b R12: 00000000c0803a00 R13: 0000000035af8b60 R14: 000000006bc2ff36 R15: 00000000115f2563 FS: 00007fea7caa66c0(0000) GS:ffff888124e5a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe948b7b338 CR3: 000000006b1dc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lib_sha256_base_do_update.isra.0+0x130/0x150 include/crypto/sha256_base.h:63 sha256_base_do_update include/crypto/sha256_base.h:81 [inline] _sha256_update arch/x86/crypto/sha256_ssse3_glue.c:74 [inline] _sha256_update+0xbe/0xf0 arch/x86/crypto/sha256_ssse3_glue.c:58 ima_calc_file_hash_tfm+0x300/0x3d0 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+0x897/0xa40 security/integrity/ima/ima_api.c:293 process_measurement+0x126c/0x2360 security/integrity/ima/ima_main.c:375 ima_file_mmap+0x1b1/0x1d0 security/integrity/ima/ima_main.c:465 security_mmap_file+0x88c/0x990 security/security.c:2982 vm_mmap_pgoff+0xec/0x450 mm/util.c:572 ksys_mmap_pgoff+0x1c8/0x5c0 mm/mmap.c:607 __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/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fea7bb8d169 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:00007fea7caa6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fea7bda5fa0 RCX: 00007fea7bb8d169 RDX: 00004000000000df RSI: 0000100000000009 RDI: 0000000000000000 RBP: 00007fea7bc0e2a0 R08: 0000000000000401 R09: 0000300000000000 R10: 0000000000040eb1 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fea7bda5fa0 R15: 00007ffe5235e4f8