[ 106.359237][ T49] audit: type=1400 audit(1609069371.756:41): avc: denied { map } for pid=9950 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '[localhost]:61156' (ECDSA) to the list of known hosts. 2020/12/27 11:42:55 fuzzer started [ 110.019837][ T49] audit: type=1400 audit(1609069375.416:42): avc: denied { map } for pid=9962 comm="syz-fuzzer" path="/syz-fuzzer" dev="sda1" ino=16526 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 110.560886][ T9962] ================================================================================ [ 110.573795][ T9962] UBSAN: invalid-load in kernel/params.c:302:33 [ 110.584112][ T9962] load of value 255 is not a valid value for type '_Bool' [ 110.595161][ T9962] CPU: 0 PID: 9962 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 110.604976][ T9962] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 110.604976][ T9962] Call Trace: [ 110.604976][ T9962] dump_stack+0x107/0x163 [ 110.604976][ T9962] ubsan_epilogue+0xb/0x5a [ 110.604976][ T9962] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 110.604976][ T9962] param_get_bool.cold+0x14/0x19 [ 110.604976][ T9962] param_attr_show+0x14a/0x220 [ 110.604976][ T9962] ? kernel_param_unlock+0x40/0x40 [ 110.604976][ T9962] module_attr_show+0x48/0x70 [ 110.604976][ T9962] ? func_ptr_is_kernel_text+0x80/0x80 [ 110.604976][ T9962] sysfs_kf_seq_show+0x1f8/0x400 [ 110.604976][ T9962] seq_read_iter+0x4d3/0x1220 [ 110.604976][ T9962] seq_read+0x3dd/0x5b0 [ 110.604976][ T9962] ? seq_read_iter+0x1220/0x1220 [ 110.604976][ T9962] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 110.604976][ T9962] ? selinux_file_permission+0xcc/0x5a0 [ 110.604976][ T9962] kernfs_fop_read+0xe9/0x590 [ 110.604976][ T9962] ? rw_verify_area+0x11d/0x350 [ 110.604976][ T9962] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 110.604976][ T9962] vfs_read+0x1b5/0x570 [ 110.604976][ T9962] ksys_read+0x12d/0x250 [ 110.604976][ T9962] ? vfs_write+0xa80/0xa80 [ 110.604976][ T9962] ? syscall_enter_from_user_mode+0x1d/0x50 [ 110.604976][ T9962] do_syscall_64+0x2d/0x70 [ 110.604976][ T9962] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 110.604976][ T9962] RIP: 0033:0x4ad4a0 [ 110.604976][ T9962] 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 [ 110.604976][ T9962] RSP: 002b:000000c0005d5678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 110.604976][ T9962] RAX: ffffffffffffffda RBX: 000000c000020a00 RCX: 00000000004ad4a0 [ 110.604976][ T9962] RDX: 0000000000001200 RSI: 000000c00039b300 RDI: 0000000000000003 [ 110.604976][ T9962] RBP: 000000c0005d56c8 R08: 0000000000000000 R09: 0000000000000000 [ 110.604976][ T9962] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 110.604976][ T9962] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 110.854207][ T9962] ================================================================================ [ 110.865665][ T9962] Kernel panic - not syncing: panic_on_warn set ... [ 110.873412][ T9962] CPU: 0 PID: 9962 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 110.875363][ T9962] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 110.875363][ T9962] Call Trace: [ 110.875363][ T9962] dump_stack+0x107/0x163 [ 110.875363][ T9962] panic+0x343/0x77f [ 110.875363][ T9962] ? __warn_printk+0xf3/0xf3 [ 110.875363][ T9962] ? ubsan_epilogue+0x3e/0x5a [ 110.875363][ T9962] ubsan_epilogue+0x54/0x5a [ 110.875363][ T9962] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 110.875363][ T9962] param_get_bool.cold+0x14/0x19 [ 110.875363][ T9962] param_attr_show+0x14a/0x220 [ 110.875363][ T9962] ? kernel_param_unlock+0x40/0x40 [ 110.875363][ T9962] module_attr_show+0x48/0x70 [ 110.875363][ T9962] ? func_ptr_is_kernel_text+0x80/0x80 [ 110.875363][ T9962] sysfs_kf_seq_show+0x1f8/0x400 [ 110.875363][ T9962] seq_read_iter+0x4d3/0x1220 [ 110.875363][ T9962] seq_read+0x3dd/0x5b0 [ 110.875363][ T9962] ? seq_read_iter+0x1220/0x1220 [ 110.875363][ T9962] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 110.875363][ T9962] ? selinux_file_permission+0xcc/0x5a0 [ 110.875363][ T9962] kernfs_fop_read+0xe9/0x590 [ 110.875363][ T9962] ? rw_verify_area+0x11d/0x350 [ 110.875363][ T9962] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 110.875363][ T9962] vfs_read+0x1b5/0x570 [ 110.875363][ T9962] ksys_read+0x12d/0x250 [ 110.875363][ T9962] ? vfs_write+0xa80/0xa80 [ 110.875363][ T9962] ? syscall_enter_from_user_mode+0x1d/0x50 [ 110.875363][ T9962] do_syscall_64+0x2d/0x70 [ 110.875363][ T9962] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 110.875363][ T9962] RIP: 0033:0x4ad4a0 [ 110.875363][ T9962] 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 [ 110.875363][ T9962] RSP: 002b:000000c0005d5678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 110.875363][ T9962] RAX: ffffffffffffffda RBX: 000000c000020a00 RCX: 00000000004ad4a0 [ 110.875363][ T9962] RDX: 0000000000001200 RSI: 000000c00039b300 RDI: 0000000000000003 [ 110.875363][ T9962] RBP: 000000c0005d56c8 R08: 0000000000000000 R09: 0000000000000000 [ 110.875363][ T9962] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 110.875363][ T9962] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 110.875363][ T9962] Kernel Offset: disabled [ 110.875363][ T9962] Rebooting in 86400 seconds.. VM DIAGNOSIS: 11:42:56 Registers: info registers vcpu 0 RAX=dffffc0000000005 RBX=0000000000000001 RCX=0000000000000000 RDX=00000000000003f9 RSI=ffffffff841a541c RDI=ffffffff9042abe0 RBP=ffffffff9042aba0 RSP=ffffc9000165f708 R8 =0000000000000001 R9 =0000000000000000 R10=ffffffff841a540d R11=000000000000001f R12=0000000000000000 R13=ffffffff8c23abd0 R14=0000000000000001 R15=ffffffff9042abf0 RIP=ffffffff841a5444 RFL=00000006 [-----P-] 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 0000000001ad4c30 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=0000000000a61b2b CR3=0000000011538000 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=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=000000c00032a4e00000000000000001 XMM02=6574656d617261702f6d766b2f656c75 XMM03=73656761705f656775685f786e2f7372 XMM04=0000000000000009000000c000014c00 XMM05=0000000000000007000000c000015c20 XMM06=0000000000000004000000c000015c28 XMM07=0000000000000007000000c000015c40 XMM08=000000000000000e000000c000015c50 XMM09=0000000000000005000000c000015c47 XMM10=000000000000000e000000c000015c60 XMM11=000000000000000b000000c000015c70 XMM12=0000000000000010000000c000015c80 XMM13=000000c0000141700000000000000001 XMM14=000000c0002861900000000000000005 XMM15=00000000000000010000000000000001 info registers vcpu 1 RAX=0000000000000000 RBX=ffffe8ffada09780 RCX=0000000000000000 RDX=ffff8880157b0f00 RSI=ffffffff8167dd48 RDI=0000000000000003 RBP=0000000000000003 RSP=ffffc90003ab7988 R8 =0000000000000000 R9 =0000000000000001 R10=ffffffff8167dd6e R11=0000000000000000 R12=fffff91ff5b412f1 R13=0000000000000000 R14=ffffe8ffada09788 R15=0000000000000001 RIP=ffffffff8167dd4a RFL=00000293 [--S-A-C] 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 000000c00005c090 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=000000c0005b9000 CR3=0000000011538000 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=00000000000000003f70c6f7a0b5ed8d XMM02=000000000000000043e0000000000000 XMM03=000000c0000b0f30000000c0000b0f00 XMM04=000000c0000be000000000c0000b1fb0 XMM05=000000c0000be060000000c0000be030 XMM06=000000c0000be0c0000000c0000be090 XMM07=000000c0000be120000000c0000be0f0 XMM08=000000c0000722d0000000c0000b1f80 XMM09=000000c0000b1fb0000000c000072b40 XMM10=000000c0000be030000000c0000be000 XMM11=000000c0000be090000000c0000be060 XMM12=000000c0000be0f0000000c0000be0c0 XMM13=000000c0000be150000000c0000be120 XMM14=000000c000072b70000000c0000be180 XMM15=000000c0000bde60000000c0000be1b0 info registers vcpu 2 RAX=00000037ad9555c8 RBX=0000000000000001 RCX=00000000000006e0 RDX=0000000000000037 RSI=ffff88802cc1fa00 RDI=00000000001156da RBP=ffff88802cc1fa00 RSP=ffffc9000042fc58 R8 =000000000000003f R9 =0000000000000000 R10=ffffffff816600f7 R11=0000000000000000 R12=00000000001156da R13=0000000000000019 R14=ffff88802cc1fa38 R15=0000000000026a00 RIP=ffffffff812f810b RFL=00000003 [------C] 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 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=000000c0005cfff8 CR3=0000000011538000 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=000000000003f299 RBX=ffff8880112e0400 RCX=ffffffff8912cca0 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed100225c080 RSP=ffffc9000043fdf8 R8 =0000000000000001 R9 =ffff88802cd35c6b R10=ffffed10059a6b8d R11=0000000000000000 R12=0000000000000003 R13=0000000000000003 R14=ffffffff8d7bd6c8 R15=0000000000000000 RIP=ffffffff8915233e RFL=00000206 [-----P-] 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=00007f3bcc3001b0 CR3=000000001dae4000 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=205b5d3539373337352e30313120205b XMM01=00000000000000000000000000000000 XMM02=00000000000001210000000000435455 XMM03=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM04=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM05=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM06=202268732e6373696d746f6f62223d65 XMM07=00000000000000002000000000000020 XMM08=ffffff0000000000ff000000000000ff XMM09=00000000000000000000000000000000 XMM10=ffffff00000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000