INFO: task syz.1.190:6423 blocked for more than 143 seconds. Not tainted 6.12.0-rc2-syzkaller-00291-g09f6b0c8904b #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.190 state:D stack:28592 pid:6423 tgid:6420 ppid:5542 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0xef5/0x5750 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6774 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591 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+0x237c/0x26d0 kernel/signal.c:2902 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:328 [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: 0033:0x7efd7af7dff9 RSP: 002b:00007efd7bdfb038 EFLAGS: 00000246 ORIG_RAX: 000000000000009d RAX: ffffffffffffffda RBX: 00007efd7b136130 RCX: 00007efd7af7dff9 RDX: 0000000000000004 RSI: 0000000000000001 RDI: 000001000000003b RBP: 00007efd7aff0296 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007efd7b136130 R15: 00007ffcc7807e68 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720 2 locks held by getty/4988: #0: ffff8880325b20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211 1 lock held by syz.1.190/6421: 5 locks held by kworker/u8:18/7076: 2 locks held by kworker/u8:21/7079: 1 lock held by syz.2.652/8653: 2 locks held by syz.3.657/8682: 3 locks held by syz.1.678/8776: 5 locks held by syz.0.685/8798: 3 locks held by syz.1.682/8795: 1 lock held by syz.3.686/8803: 2 locks held by syz.3.686/8805: 2 locks held by syz.1.687/8807: ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-syzkaller-00291-g09f6b0c8904b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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: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 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6421 Comm: syz.1.190 Not tainted 6.12.0-rc2-syzkaller-00291-g09f6b0c8904b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:sha256_transform_rorx+0x53b/0x1120 arch/x86/crypto/sha256-avx2-asm.S:605 Code: 44 01 f8 01 f0 48 8d 35 93 8c 37 0c c5 4d fe 0c 3e c5 7d 7f 4c 3c 40 89 c6 c4 63 7b f0 ea 19 c4 63 7b f0 f2 0b 44 03 5c 3c 40 <09> ce c4 e3 55 0f c4 04 45 89 cf c4 63 7b f0 e0 0d 45 31 f5 45 31 RSP: 0018:ffffc9000319f200 EFLAGS: 00000286 RAX: 00000000d1b8f322 RBX: 00000000c50b8734 RCX: 00000000078ec8da RDX: 000000005453031a RSI: 00000000d1b8f322 RDI: 0000000000000100 RBP: ffffc9000319f420 R08: 0000000065faca00 R09: 0000000083274ecd R10: 00000000c95fae3b R11: 00000000f978f287 R12: 00000000450a8200 R13: 0000000029818d2a R14: 00000000634a8a60 R15: 0000000051baae3e FS: 00007efd7be3d6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32e04ff8 CR3: 000000007b564000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lib_sha256_base_do_update include/crypto/sha256_base.h:63 [inline] sha256_base_do_update include/crypto/sha256_base.h:81 [inline] _sha256_update arch/x86/crypto/sha256_ssse3_glue.c:74 [inline] _sha256_update+0x17e/0x220 arch/x86/crypto/sha256_ssse3_glue.c:58 ima_calc_file_hash_tfm+0x302/0x3e0 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+0x8a7/0xa10 security/integrity/ima/ima_api.c:293 process_measurement+0x1271/0x2370 security/integrity/ima/ima_main.c:372 ima_file_mmap+0x1b1/0x1d0 security/integrity/ima/ima_main.c:462 security_mmap_file+0x8bd/0x990 security/security.c:2979 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: 0033:0x7efd7af7dff9 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:00007efd7be3d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007efd7b135f80 RCX: 00007efd7af7dff9 RDX: 00004000000000df RSI: 0000020000000004 RDI: 0000000000000009 RBP: 00007efd7aff0296 R08: 0000000000000001 R09: 0000300000000000 R10: 0000000000040eb2 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007efd7b135f80 R15: 00007ffcc7807e68