Warning: Permanently added '[localhost]:40309' (ECDSA) to the list of known hosts. 2020/12/27 12:45:32 fuzzer started syzkaller login: [ 99.647687][ T9362] ================================================================================ [ 99.661273][ T9362] UBSAN: invalid-load in kernel/params.c:302:33 [ 99.670865][ T9362] load of value 255 is not a valid value for type '_Bool' [ 99.683084][ T9362] CPU: 1 PID: 9362 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 99.692768][ T9362] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 99.692768][ T9362] Call Trace: [ 99.692768][ T9362] dump_stack+0x107/0x163 [ 99.692768][ T9362] ubsan_epilogue+0xb/0x5a [ 99.692768][ T9362] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 99.692768][ T9362] param_get_bool.cold+0x14/0x19 [ 99.692768][ T9362] param_attr_show+0x14a/0x220 [ 99.692768][ T9362] ? kernel_param_unlock+0x40/0x40 [ 99.692768][ T9362] module_attr_show+0x48/0x70 [ 99.692768][ T9362] ? func_ptr_is_kernel_text+0x80/0x80 [ 99.692768][ T9362] sysfs_kf_seq_show+0x1f8/0x400 [ 99.692768][ T9362] seq_read_iter+0x4d3/0x1220 [ 99.692768][ T9362] seq_read+0x3dd/0x5b0 [ 99.692768][ T9362] ? seq_read_iter+0x1220/0x1220 [ 99.692768][ T9362] ? lock_downgrade+0x6d0/0x6d0 [ 99.692768][ T9362] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 99.692768][ T9362] kernfs_fop_read+0xe9/0x590 [ 99.692768][ T9362] ? rw_verify_area+0x11d/0x350 [ 99.692768][ T9362] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 99.692768][ T9362] vfs_read+0x1b5/0x570 [ 99.692768][ T9362] ksys_read+0x12d/0x250 [ 99.692768][ T9362] ? vfs_write+0xa80/0xa80 [ 99.692768][ T9362] ? syscall_enter_from_user_mode+0x1d/0x50 [ 99.692768][ T9362] do_syscall_64+0x2d/0x70 [ 99.692768][ T9362] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 99.692768][ T9362] RIP: 0033:0x4ad4a0 [ 99.692768][ T9362] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 99.692768][ T9362] RSP: 002b:000000c000415678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 99.692768][ T9362] RAX: ffffffffffffffda RBX: 000000c000022f00 RCX: 00000000004ad4a0 [ 99.692768][ T9362] RDX: 0000000000001200 RSI: 000000c000467300 RDI: 0000000000000003 [ 99.692768][ T9362] RBP: 000000c0004156c8 R08: 0000000000000000 R09: 0000000000000000 [ 99.692768][ T9362] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 99.692768][ T9362] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 99.946303][ T9362] ================================================================================ [ 99.957258][ T9362] Kernel panic - not syncing: panic_on_warn set ... [ 99.964740][ T9362] CPU: 1 PID: 9362 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 99.967128][ T9362] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 99.967128][ T9362] Call Trace: [ 99.967128][ T9362] dump_stack+0x107/0x163 [ 99.967128][ T9362] panic+0x343/0x77f [ 99.967128][ T9362] ? __warn_printk+0xf3/0xf3 [ 99.967128][ T9362] ? ubsan_epilogue+0x3e/0x5a [ 99.967128][ T9362] ubsan_epilogue+0x54/0x5a [ 99.967128][ T9362] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 99.967128][ T9362] param_get_bool.cold+0x14/0x19 [ 99.967128][ T9362] param_attr_show+0x14a/0x220 [ 99.967128][ T9362] ? kernel_param_unlock+0x40/0x40 [ 99.967128][ T9362] module_attr_show+0x48/0x70 [ 99.967128][ T9362] ? func_ptr_is_kernel_text+0x80/0x80 [ 99.967128][ T9362] sysfs_kf_seq_show+0x1f8/0x400 [ 99.967128][ T9362] seq_read_iter+0x4d3/0x1220 [ 99.967128][ T9362] seq_read+0x3dd/0x5b0 [ 99.967128][ T9362] ? seq_read_iter+0x1220/0x1220 [ 99.967128][ T9362] ? lock_downgrade+0x6d0/0x6d0 [ 99.967128][ T9362] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 99.967128][ T9362] kernfs_fop_read+0xe9/0x590 [ 99.967128][ T9362] ? rw_verify_area+0x11d/0x350 [ 99.967128][ T9362] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 99.967128][ T9362] vfs_read+0x1b5/0x570 [ 99.967128][ T9362] ksys_read+0x12d/0x250 [ 99.967128][ T9362] ? vfs_write+0xa80/0xa80 [ 99.967128][ T9362] ? syscall_enter_from_user_mode+0x1d/0x50 [ 99.967128][ T9362] do_syscall_64+0x2d/0x70 [ 99.967128][ T9362] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 99.967128][ T9362] RIP: 0033:0x4ad4a0 [ 99.967128][ T9362] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 99.967128][ T9362] RSP: 002b:000000c000415678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 99.967128][ T9362] RAX: ffffffffffffffda RBX: 000000c000022f00 RCX: 00000000004ad4a0 [ 99.967128][ T9362] RDX: 0000000000001200 RSI: 000000c000467300 RDI: 0000000000000003 [ 99.967128][ T9362] RBP: 000000c0004156c8 R08: 0000000000000000 R09: 0000000000000000 [ 99.967128][ T9362] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 99.967128][ T9362] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 99.967128][ T9362] Kernel Offset: disabled [ 99.967128][ T9362] Rebooting in 86400 seconds.. VM DIAGNOSIS: 12:45:33 Registers: info registers vcpu 0 RAX=00000000000480e9 RBX=ffffffff8b49bc00 RCX=ffffffff8911bf50 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=fffffbfff1693780 RSP=ffffffff8b407e40 R8 =0000000000000001 R9 =ffff88802ca35bab R10=ffffed1005946b75 R11=0000000000000000 R12=0000000000000000 R13=0000000000000000 R14=ffffffff8d7bae48 R15=0000000000000000 RIP=ffffffff891411de RFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 0000000000000000 ffffffff 00c00000 GS =0000 ffff88802ca00000 ffffffff 00c00000 LDT=0000 0000000000000000 ffffffff 00c00000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=000000000060a270 CR3=000000001448a000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=2033333a35343a323120373220636544 XMM01=206e692064616f6c2d64696c61766e69 XMM02=6c616b7a79732033333a35343a323120 XMM03=2020205b203a6c656e72656b2072656c XMM04=36333954205b5d3337323136362e3939 XMM05=696c61766e69203a4e41534255205d32 XMM06=206e692064616f6c2d64696c61766e69 XMM07=32373639343932343d6469756120303d XMM08=ffffff0000000000ff000000000000ff XMM09=00000000000000000000000000000000 XMM10=ffffff00000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000060 RBX=0000000000000005 RCX=0000000000000000 RDX=00000000000003fd RSI=ffffffff8419a86c RDI=ffffffff9040dd80 RBP=ffffffff9040dd40 RSP=ffffc90001527668 R8 =000000000000004f R9 =0000000000000000 R10=ffffffff8419a85d R11=000000000000001f R12=0000000000000000 R13=fffffbfff2081bfb R14=fffffbfff2081bb2 R15=dffffc0000000000 RIP=ffffffff8419a894 RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 000000c000057590 ffffffff 00c00000 GS =0000 ffff88802cb00000 ffffffff 00c00000 LDT=0000 0000000000000000 00000000 00000000 TR =0040 fffffe000003e000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe000003c000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00000000020e0078 CR3=0000000025d8e000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=205b5d3337323136362e39392020205b XMM01=00000000000000000000000000000000 XMM02=00000000000001210000000000435455 XMM03=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM04=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM05=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM06=3734323d6f6e69202231616473223d76 XMM07=00000000000000002000000000000020 XMM08=ffffff0000000000ff000000000000ff XMM09=00000000000000000000000000000000 XMM10=ffffff00000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 2 RAX=0000000000038d0d RBX=ffff888011064400 RCX=ffffffff8911bf50 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed100220c880 RSP=ffffc9000040fdf8 R8 =0000000000000001 R9 =ffff88802cc35bab R10=ffffed1005986b75 R11=0000000000000000 R12=0000000000000002 R13=0000000000000002 R14=ffffffff8d7bae48 R15=0000000000000000 RIP=ffffffff891411de RFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 0000000000000000 ffffffff 00c00000 GS =0000 ffff88802cc00000 ffffffff 00c00000 LDT=0000 0000000000000000 00000000 00000000 TR =0040 fffffe0000079000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000077000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00000000020e1288 CR3=0000000025d8e000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=0000000000000000c1162e42fefa39ef XMM03=0000000000000000414fffffe0000000 XMM04=61636f6c2f7273752f3a6e6962732f6c XMM05=3a6e6962732f7273752f3a6e69622f6c XMM06=2f3a6e6962732f3a6e69622f7273752f XMM07=3131582f6e69622f7273752f3a6e6962 XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 3 RAX=00000000000414fd RBX=ffff888011088000 RCX=ffffffff8911bf50 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed1002211000 RSP=ffffc9000041fdf8 R8 =0000000000000001 R9 =ffff88802cd35bab R10=ffffed10059a6b75 R11=0000000000000000 R12=0000000000000003 R13=0000000000000003 R14=ffffffff8d7bae48 R15=0000000000000000 RIP=ffffffff891411de RFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 0000000000000000 ffffffff 00c00000 GS =0000 ffff88802cd00000 ffffffff 00c00000 LDT=0000 0000000000000000 00000000 00000000 TR =0040 fffffe00000b4000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe00000b2000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f2e0a0c1cf0 CR3=0000000025d8e000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=0000000000000000c1162e42fefa39ef XMM03=0000000000000000414fffffe0000000 XMM04=61636f6c2f7273752f3a6e6962732f6c XMM05=3a6e6962732f7273752f3a6e69622f6c XMM06=2f3a6e6962732f3a6e69622f7273752f XMM07=3131582f6e69622f7273752f3a6e6962 XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000