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Message-ID: <20241014142239.7h53tahoczkmaww2@quack3> Date: Mon, 14 Oct 2024 16:22:39 +0200 From: Jan Kara <jack@...e.cz> To: Hui Guo <guohui.study@...il.com> Cc: Dave Kleikamp <shaggy@...nel.org>, Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, "Matthew Wilcox (Oracle)" <willy@...radead.org>, Lizhi Xu <lizhi.xu@...driver.com>, jfs-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: Re: BUG: unable to handle kernel NULL pointer dereference in write_special_inodes Hello, On Sat 12-10-24 17:13:40, Hui Guo wrote: > we found a crash "BUG: unable to handle kernel NULL pointer > dereference in write_special_inodes" in upstream, and reproduced it > successfully. The reproducer is just mounting corrupted JFS image. Unless Shaggy is willing to dive into this I don't think this will be acted upon because JFS is mostly dead. Honza > > > HEAD Commit: 9852d85ec9d492ebef56dc5f229416c925758edc(tag 'v6.12-rc1') > kernel config: https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/6.12.config > > repro report: https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/9852d85ec9d492ebef56dc5f229416c925758edc/e4653eb3a7397c5782f96343fe9dbc5dada06496/repro.report > console output: > https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/9852d85ec9d492ebef56dc5f229416c925758edc/e4653eb3a7397c5782f96343fe9dbc5dada06496/repro.log > syz reproducer: > https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/9852d85ec9d492ebef56dc5f229416c925758edc/e4653eb3a7397c5782f96343fe9dbc5dada06496/repro.prog > c reproducer: https://raw.githubusercontent.com/androidAppGuard/KernelBugs/main/9852d85ec9d492ebef56dc5f229416c925758edc/e4653eb3a7397c5782f96343fe9dbc5dada06496/repro.cprog > > > Please let me know if there is anything I can help. > Best, > Hui Guo > > This is the crash log I got by reproducing the bug based on the above > environment， > I have piped this log through decode_stacktrace.sh for better > understand the cause of the bug. > ================================================================================ > executing program > syzkaller login: [ 43.704796][ T8242] loop3: detected capacity change > from 0 to 32768 > [ 43.707859][ T8215] loop0: detected capacity change from 0 to 32768 > [ 43.733656][ T8239] loop2: detected capacity change from 0 to 32768 > [ 43.759686][ T8234] loop1: detected capacity change from 0 to 32768 > [ 43.921958][ T8248] loop5: detected capacity change from 0 to 32768 > [ 43.947086][ T8243] loop4: detected capacity change from 0 to 32768 > [ 43.969139][ T8250] loop9: detected capacity change from 0 to 32768 > [ 43.986996][ T8254] loop14: detected capacity change from 0 to 32768 > [ 44.060631][ T8218] BUG: kernel NULL pointer dereference, address: > 0000000000000030 > [ 44.061395][ T8218] #PF: supervisor read access in kernel mode > [ 44.061959][ T8218] #PF: error_code(0x0000) - not-present page > [ 44.062526][ T8218] PGD 0 P4D 0 > [ 44.062898][ T8218] Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI > [ 44.063564][ T8218] CPU: 1 UID: 0 PID: 8218 Comm: syz-executor368 Not > tainted 6.12.0-rc1 #5 > [ 44.064885][ T8218] Hardware name: QEMU Standard PC (i440FX + PIIX, > 1996), BIOS 1.15.0-1 04/01/2014 > [ 44.065764][ T8218] RIP: 0010:write_special_inodes > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/jfs/jfs_logmgr.c:208 > (discriminator 3)) > [ 44.066375][ T8218] Code: 53 e8 6c 30 68 ff 49 8b 45 00 49 39 c5 74 > 43 48 8d 58 c8 e8 5a 30 68 ff 48 8b 43 10 48 8b 78 30 2e e8 4c 0d 39 > 03 48 8b 43 28 <48> 8b 78 30 2e e8 3e 0d 39 03 48 8b 83 b0 00 00 00 48 > 8b 78 30 2e > All code > ======== > 0: 53 push %rbx > 1: e8 6c 30 68 ff call 0xffffffffff683072 > 6: 49 8b 45 00 mov 0x0(%r13),%rax > a: 49 39 c5 cmp %rax,%r13 > d: 74 43 je 0x52 > f: 48 8d 58 c8 lea -0x38(%rax),%rbx > 13: e8 5a 30 68 ff call 0xffffffffff683072 > 18: 48 8b 43 10 mov 0x10(%rbx),%rax > 1c: 48 8b 78 30 mov 0x30(%rax),%rdi > 20: 2e e8 4c 0d 39 03 cs call 0x3390d72 > 26: 48 8b 43 28 mov 0x28(%rbx),%rax > 2a:* 48 8b 78 30 mov 0x30(%rax),%rdi <-- trapping instruction > 2e: 2e e8 3e 0d 39 03 cs call 0x3390d72 > 34: 48 8b 83 b0 00 00 00 mov 0xb0(%rbx),%rax > 3b: 48 8b 78 30 mov 0x30(%rax),%rdi > 3f: 2e cs > > Code starting with the faulting instruction > =========================================== > 0: 48 8b 78 30 mov 0x30(%rax),%rdi > 4: 2e e8 3e 0d 39 03 cs call 0x3390d48 > a: 48 8b 83 b0 00 00 00 mov 0xb0(%rbx),%rax > 11: 48 8b 78 30 mov 0x30(%rax),%rdi > 15: 2e cs > [ 44.068207][ T8218] RSP: 0018:ffff88800f2c3ce8 EFLAGS: 00010286 > [ 44.068812][ T8218] RAX: 0000000000000000 RBX: ffff88800e279c00 RCX: > ffffffff814acf4f > [ 44.069570][ T8218] RDX: ffff88800dde3300 RSI: ffffffff814acf5b RDI: > 0000000000000005 > [ 44.070349][ T8218] RBP: ffff88800f2c3d00 R08: ffff88800a50e3d0 R09: > 0000000000000001 > [ 44.071123][ T8218] R10: 0000000000000000 R11: 0000000000000001 R12: > ffffffff814b2420 > [ 44.071889][ T8218] R13: ffff888040fd5200 R14: ffff888040fd5280 R15: > 0000000000000000 > [ 44.072665][ T8218] FS: 00005555717b43c0(0000) > GS:ffff88807ee00000(0000) knlGS:0000000000000000 > [ 44.073532][ T8218] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 44.074184][ T8218] CR2: 0000000000000030 CR3: 000000000d8fa000 CR4: > 0000000000350ef0 > [ 44.074962][ T8218] Call Trace: > [ 44.075300][ T8218] <TASK> > [ 44.075599][ T8218] ? show_regs > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/kernel/dumpstack.c:479) > [ 44.076065][ T8218] ? __die > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/kernel/dumpstack.c:421 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/kernel/dumpstack.c:434) > [ 44.076490][ T8218] ? page_fault_oops > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/mm/fault.c:711) > [ 44.077009][ T8218] ? srso_return_thunk > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/lib/retpoline.S:224) > [ 44.077511][ T8218] ? __kvm_handle_async_pf > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/kernel/kvm.c:262) > [ 44.078096][ T8218] ? exc_page_fault > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/mm/fault.c:1265 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/mm/fault.c:1481 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/mm/fault.c:1539) > [ 44.078637][ T8218] ? asm_exc_page_fault > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/./arch/x86/include/asm/idtentry.h:623) > [ 44.079197][ T8218] ? __pfx_filemap_flush > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/mm/filemap.c:463) > [ 44.079730][ T8218] ? filemap_fdatawrite_wbc > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/mm/filemap.c:393) > [ 44.080314][ T8218] ? filemap_fdatawrite_wbc > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/mm/filemap.c:401) > [ 44.080893][ T8218] ? write_special_inodes > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/jfs/jfs_logmgr.c:208 > (discriminator 3)) > [ 44.081423][ T8218] ? write_special_inodes > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/jfs/jfs_logmgr.c:208 > (discriminator 3)) > [ 44.081967][ T8218] lmLogSync > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/jfs/jfs_logmgr.c:937) > [ 44.082412][ T8218] ? srso_return_thunk > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/lib/retpoline.S:224) > [ 44.082917][ T8218] ? __sanitizer_cov_trace_const_cmp4 > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/kernel/kcov.c:316) > [ 44.083568][ T8218] ? srso_return_thunk > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/lib/retpoline.S:224) > [ 44.083893][ T8253] loop11: detected capacity change from 0 to 32768 > [ 44.084063][ T8218] ? jfs_flush_journal > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/jfs/jfs_logmgr.c:1615) > [ 44.085204][ T8218] jfs_syncpt > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/jfs/jfs_logmgr.c:1041) > [ 44.085640][ T8218] jfs_sync_fs > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/jfs/super.c:688) > [ 44.086107][ T8218] ? __pfx_jfs_sync_fs > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/jfs/super.c:674) > [ 44.086625][ T8218] sync_filesystem > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/sync.c:57 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/sync.c:30) > [ 44.087120][ T8218] generic_shutdown_super > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/super.c:624) > [ 44.087674][ T8218] kill_block_super > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/super.c:1697) > [ 44.088178][ T8218] deactivate_locked_super > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/super.c:434 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/super.c:475) > [ 44.088742][ T8218] deactivate_super > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/super.c:508) > [ 44.089265][ T8218] cleanup_mnt > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/namespace.c:250 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/namespace.c:1374) > [ 44.089734][ T8218] __cleanup_mnt > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/namespace.c:1381) > [ 44.090212][ T8218] task_work_run > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/./include/linux/sched.h:2031 > (discriminator 1) > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/kernel/task_work.c:230 > (discriminator 1)) > [ 44.090688][ T8218] syscall_exit_to_user_mode > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/./include/linux/resume_user_mode.h:50 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/kernel/entry/common.c:114 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/./include/linux/entry-common.h:328 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/kernel/entry/common.c:207 > /data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/kernel/entry/common.c:218) > [ 44.091087][ T8247] loop10: detected capacity change from 0 to 32768 > [ 44.091253][ T8218] do_syscall_64 > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/entry/common.c:102) > [ 44.092312][ T8218] entry_SYSCALL_64_after_hwframe > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/arch/x86/entry/entry_64.S:130) > [ 44.092931][ T8218] RIP: 0033:0x7f44ff534f8b > [ 44.093385][ T8218] Code: 08 00 48 83 c4 08 5b 5d c3 66 0f 1f 44 00 > 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 > 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 b8 ff > ff ff f7 d8 > All code > ======== > 0: 08 00 or %al,(%rax) > 2: 48 83 c4 08 add $0x8,%rsp > 6: 5b pop %rbx > 7: 5d pop %rbp > 8: c3 ret > 9: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) > f: c3 ret > 10: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) > 17: 00 00 00 > 1a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) > 1f: f3 0f 1e fa endbr64 > 23: b8 a6 00 00 00 mov $0xa6,%eax > 28: 0f 05 syscall > 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction > 30: 77 05 ja 0x37 > 32: c3 ret > 33: 0f 1f 40 00 nopl 0x0(%rax) > 37: 48 c7 c2 b8 ff ff ff mov $0xffffffffffffffb8,%rdx > 3e: f7 d8 neg %eax > > Code starting with the faulting instruction > =========================================== > 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax > 6: 77 05 ja 0xd > 8: c3 ret > 9: 0f 1f 40 00 nopl 0x0(%rax) > d: 48 c7 c2 b8 ff ff ff mov $0xffffffffffffffb8,%rdx > 14: f7 d8 neg %eax > [ 44.095191][ T8218] RSP: 002b:00007ffc50d9a3b8 EFLAGS: 00000202 > ORIG_RAX: 00000000000000a6 > [ 44.096010][ T8218] RAX: 0000000000000000 RBX: 000000000000a5ee RCX: > 00007f44ff534f8b > [ 44.096766][ T8218] RDX: 00007f44ff4e4e88 RSI: 0000000000000009 RDI: > 00007ffc50d9a470 > [ 44.097530][ T8218] RBP: 00007ffc50d9a470 R08: 0000000000000000 R09: > 00007ffc50d9a240 > [ 44.098292][ T8218] R10: 00005555717b57b3 R11: 0000000000000202 R12: > 00007ffc50d9b500 > [ 44.099058][ T8218] R13: 00005555717b5770 R14: 00007ffc50d9a3d8 R15: > 00007ffc50d9b560 > [ 44.099831][ T8218] </TASK> > [ 44.100138][ T8218] Modules linked in: > [ 44.100537][ T8218] CR2: 0000000000000030 > [ 44.100952][ T8218] ---[ end trace 0000000000000000 ]--- > [ 44.101472][ T8218] RIP: 0010:write_special_inodes > (/data/ghui/docker_data/linux_kernel/upstream/linux_v6.11/fs/jfs/jfs_logmgr.c:208 > (discriminator 3)) > [ 44.102070][ T8218] Code: 53 e8 6c 30 68 ff 49 8b 45 00 49 39 c5 74 > 43 48 8d 58 c8 e8 5a 30 68 ff 48 8b 43 10 48 8b 78 30 2e e8 4c 0d 39 > 03 48 8b 43 28 <48> 8b 78 30 2e e8 3e 0d 39 03 48 8b 83 b0 00 00 00 48 > 8b 78 30 2e > All code > ======== > 0: 53 push %rbx > 1: e8 6c 30 68 ff call 0xffffffffff683072 > 6: 49 8b 45 00 mov 0x0(%r13),%rax > a: 49 39 c5 cmp %rax,%r13 > d: 74 43 je 0x52 > f: 48 8d 58 c8 lea -0x38(%rax),%rbx > 13: e8 5a 30 68 ff call 0xffffffffff683072 > 18: 48 8b 43 10 mov 0x10(%rbx),%rax > 1c: 48 8b 78 30 mov 0x30(%rax),%rdi > 20: 2e e8 4c 0d 39 03 cs call 0x3390d72 > 26: 48 8b 43 28 mov 0x28(%rbx),%rax > 2a:* 48 8b 78 30 mov 0x30(%rax),%rdi <-- trapping instruction > 2e: 2e e8 3e 0d 39 03 cs call 0x3390d72 > 34: 48 8b 83 b0 00 00 00 mov 0xb0(%rbx),%rax > 3b: 48 8b 78 30 mov 0x30(%rax),%rdi > 3f: 2e cs > > Code starting with the faulting instruction > =========================================== > 0: 48 8b 78 30 mov 0x30(%rax),%rdi > 4: 2e e8 3e 0d 39 03 cs call 0x3390d48 > a: 48 8b 83 b0 00 00 00 mov 0xb0(%rbx),%rax > 11: 48 8b 78 30 mov 0x30(%rax),%rdi > 15: 2e cs > [ 44.103876][ T8218] RSP: 0018:ffff88800f2c3ce8 EFLAGS: 00010286 > [ 44.104474][ T8218] RAX: 0000000000000000 RBX: ffff88800e279c00 RCX: > ffffffff814acf4f > [ 44.105248][ T8218] RDX: ffff88800dde3300 RSI: ffffffff814acf5b RDI: > 0000000000000005 > [ 44.106014][ T8218] RBP: ffff88800f2c3d00 R08: ffff88800a50e3d0 R09: > 0000000000000001 > [ 44.106771][ T8218] R10: 0000000000000000 R11: 0000000000000001 R12: > ffffffff814b2420 > [ 44.107538][ T8218] R13: ffff888040fd5200 R14: ffff888040fd5280 R15: > 0000000000000000 > [ 44.108300][ T8218] FS: 00005555717b43c0(0000) > GS:ffff88807ee00000(0000) knlGS:0000000000000000 > [ 44.109164][ T8218] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 44.109809][ T8218] CR2: 0000000000000030 CR3: 000000000d8fa000 CR4: > 0000000000350ef0 > [ 44.110572][ T8218] Kernel panic - not syncing: Fatal exception > [ 44.111289][ T8218] Kernel Offset: disabled > [ 44.111722][ T8218] Rebooting in 86400 seconds.. > > VM DIAGNOSIS: > 07:10:48 Registers: > info registers vcpu 0 > RAX=0000000000000000 RBX=0000000000001000 RCX=ffffffff814aca55 > RDX=ffff88800aa46600 > RSI=0000000000000000 RDI=0000000000000001 RBP=ffff88800ee03cf8 > RSP=ffff88800ee03ce0 > R8 =0000000000001000 R9 =ffffea0000b68ac0 R10=0000000000000000 > R11=0000000000000001 > R12=ffffea0000b68ac0 R13=0000000000001000 R14=0000000000ed2000 > R15=0000000000001000 > RIP=ffffffff8134ec2f RFL=00000293 [--S-A-C] CPL=0 II=0 A20=1 SMM=0 HLT=0 > ES =0000 0000000000000000 00000000 00000000 > CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] > SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] > DS =0000 0000000000000000 00000000 00000000 > FS =0000 00005555717b43c0 00000000 00000000 > GS =0000 ffff88803ea00000 00000000 00000000 > LDT=0000 fffffe0000000000 00000000 00000000 > TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy > GDT= fffffe0000001000 0000007f > IDT= fffffe0000000000 00000fff > CR0=80050033 CR2=00007ffc50d99bd8 CR3=000000000e6c8000 CR4=00350ef0 > DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 > DR3=0000000000000000 > DR6=00000000ffff0ff0 DR7=0000000000000400 > EFER=0000000000001d01 > 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 > YMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM01=0000000000000000 0000000000000000 00000000ff000000 00000000000000ff > YMM02=0000000000000000 0000000000000000 00000000ff000000 00000000000000ff > YMM03=0000000000000000 0000000000000000 00007ffc50d9b520 00007ffc50d9b520 > YMM04=0000000000000000 0000000000000000 0000000000000000 00007ffc50d9b55f > YMM05=0000000000000000 0000000000000000 cfff5ffebffcefff d7ffa23fffafff49 > YMM06=0000000000000000 0000000000000000 1d3ff77236800000 07fec5b8a9ffbb91 > YMM07=0000000000000000 0000000000000000 ffb2196e227feee7 ffd6adce7ffafff5 > YMM08=0000000000000000 0000000000000000 7665642f00736672 65646e69622f2e00 > YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > info registers vcpu 1 > RAX=0000000000000063 RBX=0000000000000000 RCX=0000000000000000 > RDX=00000000000003f8 > RSI=ffffffff82a1d59a RDI=ffffffff880cbfc0 RBP=ffff88800f2c3828 > RSP=ffff88800f2c3810 > R8 =302e34342020205b R9 =205b5d3436353336 R10=0000000000000063 > R11=205d383132385420 > R12=ffffffff880cbfc0 R13=0000000000000063 R14=ffffffff87fb4b3a > R15=0000000000000000 > RIP=ffffffff82a1d5b1 RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 > ES =0000 0000000000000000 00000000 00000000 > CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] > SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] > DS =0000 0000000000000000 00000000 00000000 > FS =0000 00005555717b43c0 00000000 00000000 > GS =0000 ffff88807ee00000 00000000 00000000 > LDT=0000 fffffe0000000000 00000000 00000000 > TR =0040 fffffe000003e000 00004087 00008b00 DPL=0 TSS64-busy > GDT= fffffe000003c000 0000007f > IDT= fffffe0000000000 00000fff > CR0=80050033 CR2=0000000000000030 CR3=000000000d8fa000 CR4=00350ef0 > DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 > DR3=0000000000000000 > DR6=00000000ffff0ff0 DR7=0000000000000400 > EFER=0000000000001d01 > 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 > YMM00=0000000000000000 0000000000000000 0000000000989680 0000000000000000 > YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000989680 > YMM02=0000000000000000 0000000000000000 00007f44ff5c3bc0 00007f44ff5c3bc0 > YMM03=0000000000000000 0000000000000000 00007ffc50d9b560 00007ffc50d9b560 > YMM04=0000000000000000 0000000000000000 0000000000000000 00007ffc50d9b59f > YMM05=0000000000000000 0000000000000000 0000000000000000 00007f44ff5b84b0 > YMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM08=0000000000000000 0000000000000000 7665642f00736672 65646e69622f2e00 > YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000 > YMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000 -- Jan Kara <jack@...e.com> SUSE Labs, CR
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