INFO: task syz.4.752:9510 blocked for more than 144 seconds. Not tainted 6.12.0-rc7-syzkaller-00012-g3022e9d00ebe #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.752 state:D stack:28608 pid:9510 tgid:9506 ppid:8360 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0xe55/0x5740 kernel/sched/core.c:6693 __schedule_loop kernel/sched/core.c:6770 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6785 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:2903 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: 0033:0x7f818477e719 RSP: 002b:00007f81856450e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f8184936060 RCX: 00007f818477e719 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f8184936064 RBP: 00007f8184936058 R08: 00007f8185667080 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8184936064 R13: 0000000000000000 R14: 00007fff129d7610 R15: 00007fff129d76f8 Showing all locks held in the system: 3 locks held by kworker/1:0/25: #0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204 #1: ffffc900001f7d80 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205 #2: ffffffff8ddc30f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297 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/5599: #0: ffff8880352a20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211 4 locks held by kworker/u8:18/7228: #0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1212/0x1b30 kernel/workqueue.c:3204 #1: ffffc9000342fd80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3205 #2: ffffffff8faaf690 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580 #3: ffffffff8ddc2fc0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x700 kernel/rcu/tree.c:4562 1 lock held by syz.3.518/8110: 1 lock held by syz.4.752/9509: 4 locks held by syz-executor/9804: 1 lock held by syz-executor/10059: #0: ffff8880b873ee98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598 4 locks held by syz-executor/10318: #0: ffff888044484d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x26/0x90 net/bluetooth/hci_core.c:481 #1: ffff888044484078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x34c/0x1260 net/bluetooth/hci_sync.c:5193 #2: ffffffff8fd2ae48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1972 [inline] #2: ffffffff8fd2ae48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xc4/0x260 net/bluetooth/hci_conn.c:2592 #3: ffffffff8ddc30f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329 2 locks held by syz.6.958/10681: 4 locks held by syz.6.967/10715: 3 locks held by syz.5.998/10867: 2 locks held by syz.5.999/10874: 1 lock held by syz.1.1002/10887: 2 locks held by syz.1.1007/10905: 1 lock held by syz.6.1008/10907: ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc7-syzkaller-00012-g3022e9d00ebe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 8110 Comm: syz.3.518 Not tainted 6.12.0-rc7-syzkaller-00012-g3022e9d00ebe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:sha256_transform_rorx+0x878/0x1120 arch/x86/crypto/sha256-avx2-asm.S:610 Code: c1 45 01 fa 44 01 f9 01 f1 c5 bd 72 d2 0a 89 ce c4 43 7b f0 ea 19 03 5c 3c 68 c5 e5 73 d2 13 c4 43 7b f0 f2 0b 09 d6 45 89 df <41> 31 c7 c4 63 7b f0 e1 0d 45 31 f5 c5 ed 73 d2 11 45 21 d7 c4 43 RSP: 0018:ffffc900174d7200 EFLAGS: 00000206 RAX: 00000000ea423c0f RBX: 0000000010d48335 RCX: 0000000003c4882a RDX: 0000000000b22d04 RSI: 0000000003f6ad2e RDI: 0000000000000080 RBP: ffffc900174d7420 R08: 000000001b36baf3 R09: 0000000049ec60ea R10: 00000000c6d10b14 R11: 00000000875a00f2 R12: 00000000092420e2 R13: 0000000068858a63 R14: 000000006298da21 R15: 00000000875a00f2 FS: 00007fe1a55d56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9199d37a8c CR3: 0000000031ce6000 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: 0033:0x7fe1a717e719 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:00007fe1a55d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fe1a7336130 RCX: 00007fe1a717e719 RDX: 00004000000000df RSI: 0000400000000001 RDI: 0000000000000000 RBP: 00007fe1a71f1616 R08: 0000000000000402 R09: 0000300000000000 R10: 0000000000040eb2 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe1a7336130 R15: 00007ffef8161618