INFO: task syz-executor.0:29344 can't die for more than 143 seconds. syz-executor.0 R running task 22296 29344 6813 0x00004006 Call Trace: context_switch kernel/sched/core.c:3430 [inline] __schedule+0x8f3/0x1f80 kernel/sched/core.c:4155 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4413 idtentry_exit_cond_resched arch/x86/entry/common.c:600 [inline] idtentry_exit_cond_rcu+0xc0/0xf0 arch/x86/entry/common.c:647 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:576 RIP: 0010:__sanitizer_cov_trace_pc+0x56/0x60 kernel/kcov.c:207 Code: 90 e8 13 00 00 83 fa 02 75 20 48 8b 88 f0 13 00 00 8b 80 ec 13 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 66 0f 1f 84 00 00 00 00 00 65 4c 8b 04 25 00 1f 02 00 65 8b 05 RSP: 0018:ffffc90016147848 EFLAGS: 00000246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90001e79000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000290 R08: ffff8880941ce2c0 R09: 0000000000000092 R10: ffff8880ae638cdb R11: ffffed1015cc719b R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 00000000ffffffc0 mpihelp_submul_1+0xe1/0x1a0 lib/mpi/generic_mpih-mul3.c:36 mpihelp_divrem+0x1e6/0x13c0 lib/mpi/mpih-div.c:209 mpi_powm+0xeaf/0x1ac0 lib/mpi/mpi-pow.c:205 _compute_val crypto/dh.c:39 [inline] dh_compute_value+0x34e/0x5c0 crypto/dh.c:178 crypto_kpp_generate_public_key include/crypto/kpp.h:315 [inline] __keyctl_dh_compute+0x8f2/0x1320 security/keys/dh.c:367 keyctl_dh_compute+0xbf/0x11f security/keys/dh.c:422 __do_sys_keyctl security/keys/keyctl.c:1973 [inline] __se_sys_keyctl security/keys/keyctl.c:1869 [inline] __x64_sys_keyctl+0x151/0x450 security/keys/keyctl.c:1869 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca69 Code: Bad RIP value. RSP: 002b:00007fa7193f3c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00000000004f5700 RCX: 000000000045ca69 RDX: 0000000020002700 RSI: 0000000020000400 RDI: 0000000000000017 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffff84 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000718 R14: 00000000004ca122 R15: 00007fa7193f46d4 INFO: task syz-executor.0:29348 can't die for more than 144 seconds. syz-executor.0 R running task 22296 29348 6813 0x00004006 Call Trace: context_switch kernel/sched/core.c:3430 [inline] __schedule+0x8f3/0x1f80 kernel/sched/core.c:4155 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4413 idtentry_exit_cond_resched arch/x86/entry/common.c:600 [inline] idtentry_exit_cond_rcu+0xc0/0xf0 arch/x86/entry/common.c:647 asm_sysvec_reschedule_ipi+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:196 Code: 00 00 00 00 e9 e8 e7 ff ff cc 65 48 8b 04 25 00 1f 02 00 48 8b 80 00 14 00 00 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 <65> 48 8b 04 25 00 1f 02 00 65 8b 15 18 23 8f 7e f7 c2 00 01 ff 00 RSP: 0018:ffffc9001618f668 EFLAGS: 00000286 RAX: 0000000000000002 RBX: ffff88805a4cc6e0 RCX: ffffffff83aeb197 RDX: d331ee95c84468bc RSI: 0000000000000001 RDI: 0000000000000007 RBP: 0000000000000009 R08: ffff88806c4942c0 R09: 0000000000000092 R10: ffff8880ae738cdb R11: ffffed1015ce719b R12: d331ee95c84468bc R13: ffff88805b51a0a0 R14: 0000000000000002 R15: 3c74e4b979fcde18 mpih_sqr_n_basecase+0x1d6/0x320 lib/mpi/mpih-mul.c:237 Showing all locks held in the system: 1 lock held by khungtaskd/1150: #0: ffffffff89bbde00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5779 1 lock held by in:imklog/6492: #0: ffff8880a208d170 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:826 =============================================