Warning: Permanently added '[localhost]:51536' (ECDSA) to the list of known hosts. 2020/12/27 12:19:32 fuzzer started syzkaller login: [ 96.127168][ T9075] ================================================================================ [ 96.150515][ T9075] UBSAN: invalid-load in kernel/params.c:302:33 [ 96.169970][ T9075] load of value 255 is not a valid value for type '_Bool' [ 96.193769][ T9075] CPU: 2 PID: 9075 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 96.203305][ T9075] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 96.203305][ T9075] Call Trace: [ 96.203305][ T9075] dump_stack+0x107/0x163 [ 96.203305][ T9075] ubsan_epilogue+0xb/0x5a [ 96.203305][ T9075] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 96.203305][ T9075] param_get_bool.cold+0x14/0x19 [ 96.203305][ T9075] param_attr_show+0x14a/0x220 [ 96.203305][ T9075] ? kernel_param_unlock+0x40/0x40 [ 96.203305][ T9075] module_attr_show+0x48/0x70 [ 96.203305][ T9075] ? func_ptr_is_kernel_text+0x80/0x80 [ 96.203305][ T9075] sysfs_kf_seq_show+0x1f8/0x400 [ 96.203305][ T9075] seq_read_iter+0x4d3/0x1220 [ 96.203305][ T9075] seq_read+0x3dd/0x5b0 [ 96.203305][ T9075] ? seq_read_iter+0x1220/0x1220 [ 96.203305][ T9075] ? lock_downgrade+0x6d0/0x6d0 [ 96.203305][ T9075] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 96.203305][ T9075] kernfs_fop_read+0xe9/0x590 [ 96.203305][ T9075] ? rw_verify_area+0x11d/0x350 [ 96.203305][ T9075] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 96.203305][ T9075] vfs_read+0x1b5/0x570 [ 96.203305][ T9075] ksys_read+0x12d/0x250 [ 96.203305][ T9075] ? vfs_write+0xa80/0xa80 [ 96.203305][ T9075] ? syscall_enter_from_user_mode+0x1d/0x50 [ 96.203305][ T9075] do_syscall_64+0x2d/0x70 [ 96.203305][ T9075] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 96.203305][ T9075] RIP: 0033:0x4ad4a0 [ 96.203305][ T9075] 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 [ 96.203305][ T9075] RSP: 002b:000000c0002db678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 96.203305][ T9075] RAX: ffffffffffffffda RBX: 000000c000022f00 RCX: 00000000004ad4a0 [ 96.203305][ T9075] RDX: 0000000000001200 RSI: 000000c000443300 RDI: 0000000000000003 [ 96.203305][ T9075] RBP: 000000c0002db6c8 R08: 0000000000000000 R09: 0000000000000000 [ 96.203305][ T9075] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 96.203305][ T9075] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 96.502472][ T9075] ================================================================================ [ 96.514264][ T9075] Kernel panic - not syncing: panic_on_warn set ... [ 96.522423][ T9075] CPU: 2 PID: 9075 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 96.524061][ T9075] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 96.550462][ T9075] Call Trace: [ 96.556128][ T9075] dump_stack+0x107/0x163 [ 96.556128][ T9075] panic+0x343/0x77f [ 96.565899][ T9075] ? __warn_printk+0xf3/0xf3 [ 96.565899][ T9075] ? ubsan_epilogue+0x3e/0x5a [ 96.576205][ T9075] ubsan_epilogue+0x54/0x5a [ 96.576205][ T9075] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 96.595867][ T9075] param_get_bool.cold+0x14/0x19 [ 96.595867][ T9075] param_attr_show+0x14a/0x220 [ 96.616033][ T9075] ? kernel_param_unlock+0x40/0x40 [ 96.625947][ T9075] module_attr_show+0x48/0x70 [ 96.625947][ T9075] ? func_ptr_is_kernel_text+0x80/0x80 [ 96.635923][ T9075] sysfs_kf_seq_show+0x1f8/0x400 [ 96.635923][ T9075] seq_read_iter+0x4d3/0x1220 [ 96.635923][ T9075] seq_read+0x3dd/0x5b0 [ 96.656328][ T9075] ? seq_read_iter+0x1220/0x1220 [ 96.656328][ T9075] ? lock_downgrade+0x6d0/0x6d0 [ 96.656328][ T9075] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 96.675845][ T9075] kernfs_fop_read+0xe9/0x590 [ 96.675845][ T9075] ? rw_verify_area+0x11d/0x350 [ 96.695869][ T9075] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 96.695869][ T9075] vfs_read+0x1b5/0x570 [ 96.695869][ T9075] ksys_read+0x12d/0x250 [ 96.715774][ T9075] ? vfs_write+0xa80/0xa80 [ 96.715774][ T9075] ? syscall_enter_from_user_mode+0x1d/0x50 [ 96.726267][ T9075] do_syscall_64+0x2d/0x70 [ 96.735857][ T9075] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 96.735857][ T9075] RIP: 0033:0x4ad4a0 [ 96.735857][ T9075] 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 [ 96.776193][ T9075] RSP: 002b:000000c0002db678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 96.786071][ T9075] RAX: ffffffffffffffda RBX: 000000c000022f00 RCX: 00000000004ad4a0 [ 96.796394][ T9075] RDX: 0000000000001200 RSI: 000000c000443300 RDI: 0000000000000003 [ 96.816112][ T9075] RBP: 000000c0002db6c8 R08: 0000000000000000 R09: 0000000000000000 [ 96.816112][ T9075] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 96.835891][ T9075] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 96.855821][ T9075] Kernel Offset: disabled [ 96.855821][ T9075] Rebooting in 86400 seconds.. VM DIAGNOSIS: 12:19:34 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffc90001cffb88 RCX=0000000000000000 RDX=1ffff9200039ff71 RSI=ffffffff81679018 RDI=0000000000000003 RBP=ffffc90001cffb70 RSP=ffffc90001ddfc58 R8 =0000000000000001 R9 =ffffffff81678f85 R10=ffffffff81679007 R11=0000000000000004 R12=0000000001c3e264 R13=0000000000000001 R14=dffffc0000000000 R15=0000000000000004 RIP=ffffffff81679069 RFL=00010246 [---Z-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 00007f4e3cda5700 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=00007fa6ee116cf0 CR3=00000000232a6000 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=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM01=00000000000000000000000000000000 XMM02=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d 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 1 RAX=000000000004bf2d RBX=ffff88801104a200 RCX=ffffffff8911bf50 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed1002209440 RSP=ffffc900003ffdf8 R8 =0000000000000001 R9 =ffff88802cb35bab R10=ffffed1005966b75 R11=0000000000000000 R12=0000000000000001 R13=0000000000000001 R14=ffffffff8d7bae48 R15=0000000000000000 RIP=ffffffff891411de 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 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=00007fa535dd5cf0 CR3=000000001f4cc000 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=0000000000000000411fefe000000000 XMM03=00000000000000000000000000000000 XMM04=61636f6c2f7273752f3a6e6962732f6c XMM05=3a6e6962732f7273752f3a6e69622f6c XMM06=2f3a6e6962732f3a6e69622f7273752f XMM07=3131582f6e69622f7273752f3a6e6962 XMM08=000000c0000140c0000000000045c0c1 XMM09=000000c0000140a5000000c0002428c0 XMM10=000000000000001700000000009b3165 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=000000c00006e2c0000000c000095008 XMM14=000000c00006e300000000c000095018 XMM15=000000c00006e380000000c00006e340 info registers vcpu 2 RAX=0000000000000039 RBX=0000000000000000 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff8419a7c1 RDI=ffffffff9040dd80 RBP=ffffffff9040dd40 RSP=ffffc900022376c0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff8419a7b2 R11=000000000000001f R12=0000000000000039 R13=0000000000000000 R14=ffffffff9040dd40 R15=dffffc0000000000 RIP=ffffffff8419a7ec 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 000000c000032b10 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=00007f52c430c630 CR3=000000001f4cc000 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=000000c00034ba000000000000000001 XMM02=6574656d617261702f6d766b2f656c75 XMM03=73656761705f656775685f786e2f7372 XMM04=00000000004faa4c00000000004faa70 XMM05=000000000060b54d00000000004fac97 XMM06=0000000000850991000000000060a39b XMM07=000000000045c0c100000000004300ce XMM08=0000000000000007000000c000093c40 XMM09=000000000000000e000000c000093c50 XMM10=0000000000000005000000c000093c47 XMM11=000000000000000e000000c000093c60 XMM12=000000000000000b000000c000093c70 XMM13=000000c0000920900000000000000001 XMM14=000000c0003001500000000000000005 XMM15=00000000000000010000000000000001 info registers vcpu 3 RAX=fffff5200039ff73 RBX=0000000000000001 RCX=0000000000000000 RDX=ffff888015c14400 RSI=ffffffff838fb168 RDI=ffffffff8b793de0 RBP=1ffff9200039ff73 RSP=ffffc90001cffb88 R8 =0000000000000000 R9 =0000000000000001 R10=ffffffff838fb233 R11=0000000000000000 R12=ffffffff8b793de0 R13=ffff8880400452b0 R14=0000000000000000 R15=0000000000000002 RIP=ffffffff8158e84a RFL=00010282 [--S----] 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 00007f4e3dda7700 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=0000000000f44100 CR3=00000000232a6000 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=0a276c6f6f425f27206570797420726f XMM01=5d3037393936312e36392020205b203a XMM02=65756c61762064696c6176206120746f XMM03=6e207369203535322065756c61762066 XMM04=6f2064616f6c205d3537303954205b5d XMM05=5d3037393936312e36392020205b203a XMM06=206e692064616f6c2d64696c61766e69 XMM07=32373639343932343d6469756120303d XMM08=ffffff0000000000ff000000000000ff XMM09=00000000000000000000000000000000 XMM10=ffffff00000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000