On Linux mainline kernel 5.6.0 running kselftest vm compaction_test on i386
kernel running on x86_64 devices we have noticed this Kernel BUG followed by
Kernel panic.
BUG: kernel NULL pointer dereference, address: 00000000
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
Steps to reproduce:
--------------------------
# cd /opt/kselftests/default-in-kernel/vm/
# ./compaction_test
[ 45.955706] kauditd_printk_skb: 15 callbacks suppressed
[ 45.955707] audit: type=1334 audit(1586671685.974:25): prog-id=13 op=UNLOAD
[ 45.968082] audit: type=1334 audit(1586671685.974:26): prog-id=12 op=UNLOAD
[ 46.008163] get_swap_device: Bad swap file entry 7007504a
[ 46.013647] BUG: kernel NULL pointer dereference, address: 00000000
[ 46.019918] #PF: supervisor read access in kernel mode
[ 46.025048] #PF: error_code(0x0000) - not-present page
[ 46.030181] *pde = 00000000
[ 46.033065] Oops: 0000 [#1] SMP
[ 46.036204] CPU: 0 PID: 324 Comm: systemd-journal Not tainted 5.6.0 #1
[ 46.042727] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 46.050202] EIP: do_swap_page+0x172/0x9d0
[ 46.054213] Code: 00 8b 4d f0 65 33 0d 14 00 00 00 8b 45 e0 0f 85
6c 08 00 00 8d 65 f4 5b 5e 5f 5d c3 8d 74 26 00 8b 75 e4 89 f0 e8 9e
0e 02 00 <8b> 00 f6 c4 10 74 10 89 f0 e8 30 dd 01 00 83 f8 01 0f 84 a7
04 00
[ 46.072958] EAX: 00000000 EBX: f3739f28 ECX: f590e840 EDX: 00000000
[ 46.079214] ESI: 7007504a EDI: 00000000 EBP: f3739f08 ESP: f3739ed0
[ 46.085473] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010246
[ 46.092250] CR0: 80050033 CR2: 00000000 CR3: 33abb000 CR4: 003406d0
[ 46.098506] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 46.104763] DR6: fffe0ff0 DR7: 00000400
[ 46.108595] Call Trace:
[ 46.111040] ? lock_release+0x8a/0x260
[ 46.114792] handle_mm_fault+0x430/0xcf0
[ 46.118715] do_page_fault+0x1ab/0x620
[ 46.122472] ? vmalloc_sync+0x180/0x180
[ 46.126309] common_exception_read_cr2+0x15f/0x164
[ 46.131093] EIP: 0xb7d37e10
[ 46.133884] Code: Bad RIP value.
[ 46.137109] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 46.143373] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 46.149632] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 46.156420] Modules linked in: x86_pkg_temp_thermal fuse
[ 46.161729] CR2: 0000000000000000
[ 46.165041] ---[ end trace 27c0fb4a809b98f6 ]---
[ 46.169651] EIP: do_swap_page+0x172/0x9d0
[ 46.173656] Code: 00 8b 4d f0 65 33 0d 14 00 00 00 8b 45 e0 0f 85
6c 08 00 00 8d 65 f4 5b 5e 5f 5d c3 8d 74 26 00 8b 75 e4 89 f0 e8 9e
0e 02 00 <8b> 00 f6 c4 10 74 10 89 f0 e8 30 dd 01 00 83 f8 01 0f 84 a7
04 00
[ 46.192401] EAX: 00000000 EBX: f3739f28 ECX: f590e840 EDX: 00000000
[ 46.198656] ESI: 7007504a EDI: 00000000 EBP: f3739f08 ESP: f3739ed0
[ 46.204914] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010246
[ 46.211693] CR0: 80050033 CR2: b7d37e06 CR3: 33abb000 CR4: 003406d0
[ 46.217949] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 46.224206] DR6: fffe0ff0 DR7: 00000400
[ 46.228039] BUG: sleeping function called from invalid context at
/usr/src/kernel/include/linux/percpu-rwsem.h:49
[ 46.238290] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid:
324, name: systemd-journal
[ 46.246801] INFO: lockdep is turned off.
[ 46.250717] irq event stamp: 433914
[ 46.254205] hardirqs last enabled at (433913): [<cb16040d>]
console_unlock+0x46d/0x600
[ 46.262203] hardirqs last disabled at (433914): [<cb0019dc>]
trace_hardirqs_off_thunk+0xc/0x10
[ 46.270807] softirqs last enabled at (433910): [<cbe07675>]
__do_softirq+0x2d5/0x3e2
[ 46.278625] softirqs last disabled at (433743): [<cb0a6645>]
call_on_stack+0x45/0x50
[ 46.286354] CPU: 0 PID: 324 Comm: systemd-journal Tainted: G D
5.6.0 #1
[ 46.294259] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 46.301729] Call Trace:
[ 46.304174] dump_stack+0x6e/0x96
[ 46.307487] ___might_sleep+0x14d/0x240
[ 46.311323] __might_sleep+0x33/0x80
[ 46.314896] exit_signals+0x2a/0x2d0
[ 46.318475] do_exit+0x8e/0xb40
[ 46.321621] rewind_stack_do_exit+0x11/0x13
[ 46.325804] EIP: 0xb7d37e10
[ 46.328597] Code: Bad RIP value.
[ 46.331820] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 46.338078] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 46.344333] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 46.351270] swap_info_get: Bad swap file entry 7007742a
[ 46.356514] BUG: Bad page map in process systemd-journal
pte:0ee8543c pmd:8c4a6067
[ 46.364211] addr:b7ccc000 vm_flags:00000075 anon_vma:00000000
mapping:f41d87c0 index:178
[ 46.372302] file:libc-2.27.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 46.380573] CPU: 0 PID: 324 Comm: systemd-journal Tainted: G D
W 5.6.0 #1
[ 46.388482] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 46.395951] Call Trace:
[ 46.398397] dump_stack+0x6e/0x96
[ 46.401708] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.406058] print_bad_pte+0x11d/0x1b0
[ 46.409804] ? read_cache_page_gfp+0x20/0x20
[ 46.414073] ? nfs_file_read+0xa0/0xa0
[ 46.417820] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.422179] unmap_page_range+0x3fe/0x740
[ 46.426194] unmap_single_vma+0x60/0xc0
[ 46.430031] unmap_vmas+0xb3/0x140
[ 46.433437] exit_mmap+0x80/0x160
[ 46.436760] mmput+0x56/0x100
[ 46.439729] do_exit+0x2f8/0xb40
[ 46.442964] rewind_stack_do_exit+0x11/0x13
[ 46.447146] EIP: 0xb7d37e10
[ 46.449938] Code: Bad RIP value.
[ 46.453161] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 46.459417] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 46.465676] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 46.472488] swap_info_get: Bad swap file entry 7007772b
[ 46.477729] BUG: Bad page map in process systemd-journal
pte:0eee563c pmd:8c4a6067
[ 46.485389] addr:b7ccd000 vm_flags:00000075 anon_vma:00000000
mapping:f41d87c0 index:179
[ 46.493476] file:libc-2.27.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 46.501740] CPU: 2 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 46.509651] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 46.517119] Call Trace:
[ 46.519578] dump_stack+0x6e/0x96
[ 46.522903] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.527260] print_bad_pte+0x11d/0x1b0
[ 46.531006] ? read_cache_page_gfp+0x20/0x20
[ 46.535278] ? nfs_file_read+0xa0/0xa0
[ 46.539021] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.543373] unmap_page_range+0x3fe/0x740
[ 46.547379] unmap_single_vma+0x60/0xc0
[ 46.551216] unmap_vmas+0xb3/0x140
[ 46.554625] exit_mmap+0x80/0x160
[ 46.557944] mmput+0x56/0x100
[ 46.560912] do_exit+0x2f8/0xb40
[ 46.564138] rewind_stack_do_exit+0x11/0x13
[ 46.568321] EIP: 0xb7d37e10
[ 46.571114] Code: Bad RIP value.
[ 46.574337] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 46.580594] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 46.586851] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 46.593641] swap_info_get: Bad swap file entry 7007762a
[ 46.598877] BUG: Bad page map in process systemd-journal
pte:0eec543c pmd:8c4a6067
[ 46.606530] addr:b7cce000 vm_flags:00000075 anon_vma:00000000
mapping:f41d87c0 index:17a
[ 46.614650] file:libc-2.27.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 46.622907] CPU: 2 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 46.630817] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 46.638287] Call Trace:
[ 46.640733] dump_stack+0x6e/0x96
[ 46.644051] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.648403] print_bad_pte+0x11d/0x1b0
[ 46.652147] ? read_cache_page_gfp+0x20/0x20
[ 46.656419] ? nfs_file_read+0xa0/0xa0
[ 46.660162] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.664515] unmap_page_range+0x3fe/0x740
[ 46.668529] unmap_single_vma+0x60/0xc0
[ 46.672366] unmap_vmas+0xb3/0x140
[ 46.675766] exit_mmap+0x80/0x160
[ 46.679086] mmput+0x56/0x100
[ 46.682056] do_exit+0x2f8/0xb40
[ 46.685290] rewind_stack_do_exit+0x11/0x13
[ 46.689474] EIP: 0xb7d37e10
[ 46.692264] Code: Bad RIP value.
[ 46.695489] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 46.701753] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 46.708012] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 46.714810] swap_info_get: Bad swap file entry 7007522f
[ 46.720035] BUG: Bad page map in process systemd-journal
pte:0ea45e3c pmd:8c4a6067
[ 46.727686] addr:b7d35000 vm_flags:00000075 anon_vma:00000000
mapping:f41d2ac0 index:e
[ 46.735602] file:libpthread-2.27.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 46.744380] CPU: 2 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 46.752287] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 46.759759] Call Trace:
[ 46.762203] dump_stack+0x6e/0x96
[ 46.765514] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.769866] print_bad_pte+0x11d/0x1b0
[ 46.773617] ? read_cache_page_gfp+0x20/0x20
[ 46.777882] ? nfs_file_read+0xa0/0xa0
[ 46.781624] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.785976] unmap_page_range+0x3fe/0x740
[ 46.789982] unmap_single_vma+0x60/0xc0
[ 46.793819] unmap_vmas+0xb3/0x140
[ 46.797218] exit_mmap+0x80/0x160
[ 46.800538] mmput+0x56/0x100
[ 46.803509] do_exit+0x2f8/0xb40
[ 46.806736] rewind_stack_do_exit+0x11/0x13
[ 46.810918] EIP: 0xb7d37e10
[ 46.813710] Code: Bad RIP value.
[ 46.816940] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 46.823197] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 46.829457] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 46.836248] swap_info_get: Bad swap file entry 7007504a
[ 46.841477] BUG: Bad page map in process systemd-journal
pte:0ea0943c pmd:8c4a6067
[ 46.849131] addr:b7d37000 vm_flags:00000075 anon_vma:00000000
mapping:f41d2ac0 index:10
[ 46.857132] file:libpthread-2.27.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 46.865913] CPU: 2 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 46.873820] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 46.881290] Call Trace:
[ 46.883736] dump_stack+0x6e/0x96
[ 46.887056] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.891413] print_bad_pte+0x11d/0x1b0
[ 46.895159] ? read_cache_page_gfp+0x20/0x20
[ 46.899429] ? nfs_file_read+0xa0/0xa0
[ 46.903175] ? nfs_readpage_async+0x2f0/0x2f0
[ 46.907533] unmap_page_range+0x3fe/0x740
[ 46.911539] unmap_single_vma+0x60/0xc0
[ 46.915378] unmap_vmas+0xb3/0x140
[ 46.918784] exit_mmap+0x80/0x160
[ 46.922105] mmput+0x56/0x100
[ 46.925074] do_exit+0x2f8/0xb40
[ 46.928300] rewind_stack_do_exit+0x11/0x13
[ 46.932485] EIP: 0xb7d37e10
[ 46.935276] Code: Bad RIP value.
[ 46.938507] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 46.944763] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 46.951023] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 46.957836] swap_info_get: Bad swap file entry 70073aa6
[ 46.963124] BUG: Bad page map in process systemd-journal
pte:0e754c3c pmd:8c4a6067
[ 46.970785] addr:b7dd9000 vm_flags:00000075 anon_vma:00000000
mapping:f5008c20 index:8f
[ 46.978800] file:libsystemd-shared-237.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 46.988111] CPU: 2 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 46.996044] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 47.003514] Call Trace:
[ 47.005959] dump_stack+0x6e/0x96
[ 47.009269] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.013621] print_bad_pte+0x11d/0x1b0
[ 47.017364] ? read_cache_page_gfp+0x20/0x20
[ 47.021629] ? nfs_file_read+0xa0/0xa0
[ 47.025372] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.029725] unmap_page_range+0x3fe/0x740
[ 47.033740] unmap_single_vma+0x60/0xc0
[ 47.037576] unmap_vmas+0xb3/0x140
[ 47.040975] exit_mmap+0x80/0x160
[ 47.044295] mmput+0x56/0x100
[ 47.047266] do_exit+0x2f8/0xb40
[ 47.050498] rewind_stack_do_exit+0x11/0x13
[ 47.054673] EIP: 0xb7d37e10
[ 47.057467] Code: Bad RIP value.
[ 47.060696] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 47.066953] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 47.073211] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 47.080067] swap_info_get: Bad swap file entry 7007522e
[ 47.085318] BUG: Bad page map in process systemd-journal
pte:0ea45c3c pmd:8c4a6067
[ 47.092977] addr:b7e79000 vm_flags:00000075 anon_vma:00000000
mapping:f5008c20 index:12f
[ 47.101065] file:libsystemd-shared-237.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 47.110370] CPU: 3 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 47.118280] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 47.125749] Call Trace:
[ 47.128195] dump_stack+0x6e/0x96
[ 47.131514] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.135871] print_bad_pte+0x11d/0x1b0
[ 47.139616] ? read_cache_page_gfp+0x20/0x20
[ 47.143880] ? nfs_file_read+0xa0/0xa0
[ 47.147623] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.151977] unmap_page_range+0x3fe/0x740
[ 47.155990] unmap_single_vma+0x60/0xc0
[ 47.159827] unmap_vmas+0xb3/0x140
[ 47.163226] exit_mmap+0x80/0x160
[ 47.166547] mmput+0x56/0x100
[ 47.169516] do_exit+0x2f8/0xb40
[ 47.172749] rewind_stack_do_exit+0x11/0x13
[ 47.176935] EIP: 0xb7d37e10
[ 47.179725] Code: Bad RIP value.
[ 47.182948] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 47.189204] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 47.195464] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 47.202272] swap_info_get: Bad swap file entry 70077d2b
[ 47.207505] BUG: Bad page map in process systemd-journal
pte:0efa563c pmd:8c4a6067
[ 47.215165] addr:b7e9e000 vm_flags:00000075 anon_vma:00000000
mapping:f5008c20 index:154
[ 47.223253] file:libsystemd-shared-237.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 47.232551] CPU: 3 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 47.240459] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 47.247930] Call Trace:
[ 47.250374] dump_stack+0x6e/0x96
[ 47.253686] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.258036] print_bad_pte+0x11d/0x1b0
[ 47.261780] ? read_cache_page_gfp+0x20/0x20
[ 47.266045] ? nfs_file_read+0xa0/0xa0
[ 47.269788] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.274141] unmap_page_range+0x3fe/0x740
[ 47.278154] unmap_single_vma+0x60/0xc0
[ 47.281991] unmap_vmas+0xb3/0x140
[ 47.285390] exit_mmap+0x80/0x160
[ 47.288710] mmput+0x56/0x100
[ 47.291681] do_exit+0x2f8/0xb40
[ 47.294915] rewind_stack_do_exit+0x11/0x13
[ 47.299098] EIP: 0xb7d37e10
[ 47.301888] Code: Bad RIP value.
[ 47.305111] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 47.311370] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 47.317628] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 47.324413] swap_info_get: Bad swap file entry 70077f2b
[ 47.329650] BUG: Bad page map in process systemd-journal
pte:0efe563c pmd:8c4a6067
[ 47.337303] addr:b7e9f000 vm_flags:00000075 anon_vma:00000000
mapping:f5008c20 index:155
[ 47.345392] file:libsystemd-shared-237.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 47.354689] CPU: 3 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 47.362597] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 47.370067] Call Trace:
[ 47.372512] dump_stack+0x6e/0x96
[ 47.375824] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.380174] print_bad_pte+0x11d/0x1b0
[ 47.383920] ? read_cache_page_gfp+0x20/0x20
[ 47.388191] ? nfs_file_read+0xa0/0xa0
[ 47.391936] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.396295] unmap_page_range+0x3fe/0x740
[ 47.400301] unmap_single_vma+0x60/0xc0
[ 47.404139] unmap_vmas+0xb3/0x140
[ 47.407545] exit_mmap+0x80/0x160
[ 47.410866] mmput+0x56/0x100
[ 47.413836] do_exit+0x2f8/0xb40
[ 47.417062] rewind_stack_do_exit+0x11/0x13
[ 47.421246] EIP: 0xb7d37e10
[ 47.424037] Code: Bad RIP value.
[ 47.427267] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 47.433527] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 47.439783] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 47.446566] swap_info_get: Bad swap file entry 70077a2a
[ 47.451800] BUG: Bad page map in process systemd-journal
pte:0ef4543c pmd:8c4a6067
[ 47.459450] addr:b7ea0000 vm_flags:00000075 anon_vma:00000000
mapping:f5008c20 index:156
[ 47.467539] file:libsystemd-shared-237.so fault:filemap_fault
mmap:nfs_file_mmap readpage:nfs_readpage
[ 47.476836] CPU: 3 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 47.484745] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 47.492214] Call Trace:
[ 47.494660] dump_stack+0x6e/0x96
[ 47.497970] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.502323] print_bad_pte+0x11d/0x1b0
[ 47.506076] ? read_cache_page_gfp+0x20/0x20
[ 47.510345] ? nfs_file_read+0xa0/0xa0
[ 47.514091] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.518442] unmap_page_range+0x3fe/0x740
[ 47.522458] unmap_single_vma+0x60/0xc0
[ 47.526294] unmap_vmas+0xb3/0x140
[ 47.529693] exit_mmap+0x80/0x160
[ 47.533012] mmput+0x56/0x100
[ 47.535982] do_exit+0x2f8/0xb40
[ 47.539207] rewind_stack_do_exit+0x11/0x13
[ 47.543384] EIP: 0xb7d37e10
[ 47.546172] Code: Bad RIP value.
[ 47.549396] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 47.555657] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 47.561920] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 47.568712] swap_info_get: Bad swap file entry 7007444a
[ 47.573944] BUG: Bad page map in process systemd-journal
pte:0e88943c pmd:8c4a6067
[ 47.581598] addr:b7f81000 vm_flags:00000875 anon_vma:00000000
mapping:f5008360 index:4
[ 47.589510] file:ld-2.27.so fault:filemap_fault mmap:nfs_file_mmap
readpage:nfs_readpage
[ 47.597597] CPU: 3 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 47.605505] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 47.612974] Call Trace:
[ 47.615419] dump_stack+0x6e/0x96
[ 47.618731] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.623083] print_bad_pte+0x11d/0x1b0
[ 47.626834] ? read_cache_page_gfp+0x20/0x20
[ 47.631099] ? nfs_file_read+0xa0/0xa0
[ 47.634843] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.639201] unmap_page_range+0x3fe/0x740
[ 47.643209] unmap_single_vma+0x60/0xc0
[ 47.647045] unmap_vmas+0xb3/0x140
[ 47.650445] exit_mmap+0x80/0x160
[ 47.653764] mmput+0x56/0x100
[ 47.656735] do_exit+0x2f8/0xb40
[ 47.659969] rewind_stack_do_exit+0x11/0x13
[ 47.664150] EIP: 0xb7d37e10
[ 47.666941] Code: Bad RIP value.
[ 47.670166] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 47.676425] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 47.682682] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 47.689464] swap_info_get: Bad swap file entry 700742c6
[ 47.694686] BUG: Bad page map in process systemd-journal
pte:0e858c3c pmd:8c4a6067
[ 47.702339] addr:b7f82000 vm_flags:00000875 anon_vma:00000000
mapping:f5008360 index:5
[ 47.710255] file:ld-2.27.so fault:filemap_fault mmap:nfs_file_mmap
readpage:nfs_readpage
[ 47.718338] CPU: 3 PID: 324 Comm: systemd-journal Tainted: G B D
W 5.6.0 #1
[ 47.726248] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 47.733718] Call Trace:
[ 47.736163] dump_stack+0x6e/0x96
[ 47.739473] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.743824] print_bad_pte+0x11d/0x1b0
[ 47.747570] ? read_cache_page_gfp+0x20/0x20
[ 47.751841] ? nfs_file_read+0xa0/0xa0
[ 47.755585] ? nfs_readpage_async+0x2f0/0x2f0
[ 47.759937] unmap_page_range+0x3fe/0x740
[ 47.763953] unmap_single_vma+0x60/0xc0
[ 47.767789] unmap_vmas+0xb3/0x140
[ 47.771196] exit_mmap+0x80/0x160
[ 47.774515] mmput+0x56/0x100
[ 47.777485] do_exit+0x2f8/0xb40
[ 47.780712] rewind_stack_do_exit+0x11/0x13
[ 47.784896] EIP: 0xb7d37e10
[ 47.787694] Code: Bad RIP value.
[ 47.790918] EAX: 00080042 EBX: b7f712e4 ECX: 00000002 EDX: 007bfdf2
[ 47.797176] ESI: 007ca2f0 EDI: bfe70860 EBP: 007bec30 ESP: bfe7058c
[ 47.803432] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010206
[ 47.810255] BUG: Bad rss-counter state mm:6923ef64 type:MM_FILEPAGES val:12
[ 47.817226] BUG: Bad rss-counter state mm:6923ef64 type:MM_SWAPENTS val:-12
[ 47.832458] get_swap_device: Bad swap file entry 7007a82a
[ 47.837875] BUG: kernel NULL pointer dereference, address: 00000000
[ 47.844150] #PF: supervisor read access in kernel mode
[ 47.849289] #PF: error_code(0x0000) - not-present page
[ 47.854427] *pde = 00000000
[ 47.857304] Oops: 0000 [#2] SMP
[ 47.860444] CPU: 1 PID: 1 Comm: systemd Tainted: G B D W 5.6.0 #1
[ 47.867488] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 47.874962] EIP: do_swap_page+0x172/0x9d0
[ 47.878971] Code: 00 8b 4d f0 65 33 0d 14 00 00 00 8b 45 e0 0f 85
6c 08 00 00 8d 65 f4 5b 5e 5f 5d c3 8d 74 26 00 8b 75 e4 89 f0 e8 9e
0e 02 00 <8b> 00 f6 c4 10 74 10 89 f0 e8 30 dd 01 00 83 f8 01 0f 84 a7
04 00
[ 47.897707] EAX: 00000000 EBX: f555df28 ECX: cb161967 EDX: 00000000
[ 47.903964] ESI: 7007a82a EDI: 00000000 EBP: f555df08 ESP: f555ded0
[ 47.910223] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010246
[ 47.917001] CR0: 80050033 CR2: 00000000 CR3: 3313b000 CR4: 003406d0
[ 47.923257] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 47.929515] DR6: fffe0ff0 DR7: 00000400
[ 47.933344] Call Trace:
[ 47.935790] ? handle_mm_fault+0xca/0xcf0
[ 47.939804] handle_mm_fault+0x430/0xcf0
[ 47.943731] ? security_file_free+0x4e/0x60
[ 47.947918] do_page_fault+0x1ab/0x620
[ 47.951669] ? vmalloc_sync+0x180/0x180
[ 47.955505] common_exception_read_cr2+0x15f/0x164
[ 47.960289] EIP: 0xb7a3d0f6
[ 47.963081] Code: c0 74 08 38 d8 75 04 39 fe 75 e9 0f b6 fb 5b 29
f8 5e 5f c3 56 57 8b 7c 24 0c 31 c0 89 f9 83 e1 3f 66 0f ef c0 83 f9
30 77 17 <f3> 0f 6f 0f 66 0f 74 c1 66 0f d7 d0 85 d2 75 73 89 f8 83 e0
f0 eb
[ 47.981816] EAX: 00000000 EBX: b7ed02e4 ECX: 00000025 EDX: 012e13dc
[ 47.988073] ESI: 005c34a5 EDI: 005c34a5 EBP: 005c34a5 ESP: bfe689d4
[ 47.994332] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010287
[ 48.001111] Modules linked in: x86_pkg_temp_thermal fuse
[ 48.006424] CR2: 0000000000000000
[ 48.009742] ---[ end trace 27c0fb4a809b98f7 ]---
[ 48.014362] EIP: do_swap_page+0x172/0x9d0
[ 48.018373] Code: 00 8b 4d f0 65 33 0d 14 00 00 00 8b 45 e0 0f 85
6c 08 00 00 8d 65 f4 5b 5e 5f 5d c3 8d 74 26 00 8b 75 e4 89 f0 e8 9e
0e 02 00 <8b> 00 f6 c4 10 74 10 89 f0 e8 30 dd 01 00 83 f8 01 0f 84 a7
04 00
[ 48.037111] EAX: 00000000 EBX: f3739f28 ECX: f590e840 EDX: 00000000
[ 48.043367] ESI: 7007504a EDI: 00000000 EBP: f3739f08 ESP: f3739ed0
[ 48.049624] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010246
[ 48.056402] CR0: 80050033 CR2: 00000000 CR3: 3313b000 CR4: 003406d0
[ 48.062658] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 48.068916] DR6: fffe0ff0 DR7: 00000400
[ 48.072746] BUG: sleeping function called from invalid context at
/usr/src/kernel/include/linux/percpu-rwsem.h:49
[ 48.082990] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid:
1, name: systemd
[ 48.090634] INFO: lockdep is turned off.
[ 48.094576] irq event stamp: 2162056
[ 48.098150] hardirqs last enabled at (2162055): [<cbe036a2>]
_raw_write_unlock_irq+0x22/0x30
[ 48.106670] hardirqs last disabled at (2162056): [<cbdfcc4f>]
__schedule+0xbf/0x970
[ 48.114322] softirqs last enabled at (2161816): [<cbc34343>]
unix_sock_destructor+0x63/0x100
[ 48.122831] softirqs last disabled at (2161814): [<cbc34343>]
unix_sock_destructor+0x63/0x100
[ 48.131341] CPU: 1 PID: 1 Comm: systemd Tainted: G B D W 5.6.0 #1
[ 48.138378] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 48.145849] Call Trace:
[ 48.148294] dump_stack+0x6e/0x96
[ 48.151606] ___might_sleep+0x14d/0x240
[ 48.155438] __might_sleep+0x33/0x80
[ 48.159017] exit_signals+0x2a/0x2d0
[ 48.162596] do_exit+0x8e/0xb40
[ 48.165741] rewind_stack_do_exit+0x11/0x13
[ 48.169916] EIP: 0xb7a3d0f6
[ 48.172709] Code: c0 74 08 38 d8 75 04 39 fe 75 e9 0f b6 fb 5b 29
f8 5e 5f c3 56 57 8b 7c 24 0c 31 c0 89 f9 83 e1 3f 66 0f ef c0 83 f9
30 77 17 <f3> 0f 6f 0f 66 0f 74 c1 66 0f d7 d0 85 d2 75 73 89 f8 83 e0
f0 eb
[ 48.191452] EAX: 00000000 EBX: b7ed02e4 ECX: 00000025 EDX: 012e13dc
[ 48.197711] ESI: 005c34a5 EDI: 005c34a5 EBP: 005c34a5 ESP: bfe689d4
[ 48.203968] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00010287
[ 48.210748] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x00000009
[ 48.218422] Kernel Offset: 0xa000000 from 0xc1000000 (relocation
range: 0xc0000000-0xf77fdfff)
[ 48.227030] ---[ end Kernel panic - not syncing: Attempted to kill
init! exitcode=0x00000009 ]---
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git branch: master
kernel-config: http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-core2-32/lkft/linux-mainline/2606/config
git log --oneline compaction.c
77337edee759 mm/compaction: add missing annotation for compact_lock_irqsave
9de4f22a60f7 mm: code cleanup for MADV_FREE
250046e7ba2a mm/compaction.c: clean code by removing unnecessary assignment
6923aa0d8c62 mm/compaction: Disable compact_unevictable_allowed on RT
6467552ca64c mm, compaction: fully assume capture is not NULL in
compact_zone_order()
1da2f328fa64 mm,thp,compaction,cma: allow THP migration for CMA allocations
a2e9a5afce08 mm, compaction: fix wrong pfn handling in __reset_isolation_pfn()
32aaf0553df9 mm/compaction.c: remove unnecessary zone parameter in
isolate_migratepages()
a94b525241c0 mm/compaction.c: clear total_{migrate,free}_scanned
before scanning a new zone
d8c6546b1aea mm: introduce compound_nr()
full test log,
https://lkft.validation.linaro.org/scheduler/job/1360870
Reported-by: Naresh Kamboju <[email protected]>
--
Linaro LKFT
https://lkft.linaro.org
Hi, Naresh,
On Sun, Apr 12, 2020 at 12:24:57PM +0530, Naresh Kamboju wrote:
> On Linux mainline kernel 5.6.0 running kselftest vm compaction_test on i386
> kernel running on x86_64 devices we have noticed this Kernel BUG followed by
> Kernel panic.
>
> BUG: kernel NULL pointer dereference, address: 00000000
> Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
>
> Steps to reproduce:
> --------------------------
> # cd /opt/kselftests/default-in-kernel/vm/
> # ./compaction_test
>
> [ 45.955706] kauditd_printk_skb: 15 callbacks suppressed
> [ 45.955707] audit: type=1334 audit(1586671685.974:25): prog-id=13 op=UNLOAD
> [ 45.968082] audit: type=1334 audit(1586671685.974:26): prog-id=12 op=UNLOAD
> [ 46.008163] get_swap_device: Bad swap file entry 7007504a
> [ 46.013647] BUG: kernel NULL pointer dereference, address: 00000000
I suspect this is the same issue with:
https://lore.kernel.org/lkml/20200410002518.GG8179@shao2-debian/
And since this one is very easy to reproduce, I finally noticed that
we have wrongly enabled uffd-wp on x86_32, which is definely not going
to work... Because we'll use bit 2 of swap entry assuming that's the
uffd-wp bit, while that's part of swp offset on 32bit systems.
Naresh, could you try whether below change fixes the issue for you?
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 8d078642b4be..7ac524d1316e 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -149,7 +149,7 @@ config X86
select HAVE_ARCH_TRACEHOOK
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD if X86_64
- select HAVE_ARCH_USERFAULTFD_WP if USERFAULTFD
+ select HAVE_ARCH_USERFAULTFD_WP if X86_64 && USERFAULTFD
select HAVE_ARCH_VMAP_STACK if X86_64
select HAVE_ARCH_WITHIN_STACK_FRAMES
select HAVE_ASM_MODVERSIONS
Thanks,
--
Peter Xu
On Mon, 13 Apr 2020 at 03:12, Peter Xu <[email protected]> wrote:
> And since this one is very easy to reproduce, I finally noticed that
> we have wrongly enabled uffd-wp on x86_32, which is definely not going
> to work... Because we'll use bit 2 of swap entry assuming that's the
> uffd-wp bit, while that's part of swp offset on 32bit systems.
>
> Naresh, could you try whether below change fixes the issue for you?
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 8d078642b4be..7ac524d1316e 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -149,7 +149,7 @@ config X86
> select HAVE_ARCH_TRACEHOOK
> select HAVE_ARCH_TRANSPARENT_HUGEPAGE
> select HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD if X86_64
> - select HAVE_ARCH_USERFAULTFD_WP if USERFAULTFD
> + select HAVE_ARCH_USERFAULTFD_WP if X86_64 && USERFAULTFD
> select HAVE_ARCH_VMAP_STACK if X86_64
> select HAVE_ARCH_WITHIN_STACK_FRAMES
> select HAVE_ASM_MODVERSIONS
>
Tested-by: Naresh Kamboju <[email protected]>
The above patch tested and did not notice the crash.
+ cd /opt/kselftests/default-in-kernel/vm/
+ ./compaction_test
No of huge pages allocated = 297
+ ./compaction_test
[ 46.059785] kauditd_printk_skb: 15 callbacks suppressed
[ 46.059786] audit: type=1334 audit(1586776582.927:25): prog-id=17 op=UNLOAD
[ 46.071997] audit: type=1334 audit(1586776582.927:26): prog-id=16 op=UNLOAD
No of huge pages allocated = 160
Full test log,
https://lkft.validation.linaro.org/scheduler/job/1362495#L1308
Build artifacts.
https://builds.tuxbuild.com/w0ol7cCsGan0wzPp7bNqkg/
- Naresh
On Mon, Apr 13, 2020 at 04:51:25PM +0530, Naresh Kamboju wrote:
> On Mon, 13 Apr 2020 at 03:12, Peter Xu <[email protected]> wrote:
> > And since this one is very easy to reproduce, I finally noticed that
> > we have wrongly enabled uffd-wp on x86_32, which is definely not going
> > to work... Because we'll use bit 2 of swap entry assuming that's the
> > uffd-wp bit, while that's part of swp offset on 32bit systems.
> >
> > Naresh, could you try whether below change fixes the issue for you?
> >
> > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> > index 8d078642b4be..7ac524d1316e 100644
> > --- a/arch/x86/Kconfig
> > +++ b/arch/x86/Kconfig
> > @@ -149,7 +149,7 @@ config X86
> > select HAVE_ARCH_TRACEHOOK
> > select HAVE_ARCH_TRANSPARENT_HUGEPAGE
> > select HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD if X86_64
> > - select HAVE_ARCH_USERFAULTFD_WP if USERFAULTFD
> > + select HAVE_ARCH_USERFAULTFD_WP if X86_64 && USERFAULTFD
> > select HAVE_ARCH_VMAP_STACK if X86_64
> > select HAVE_ARCH_WITHIN_STACK_FRAMES
> > select HAVE_ASM_MODVERSIONS
> >
>
> Tested-by: Naresh Kamboju <[email protected]>
>
> The above patch tested and did not notice the crash.
> + cd /opt/kselftests/default-in-kernel/vm/
> + ./compaction_test
> No of huge pages allocated = 297
> + ./compaction_test
> [ 46.059785] kauditd_printk_skb: 15 callbacks suppressed
> [ 46.059786] audit: type=1334 audit(1586776582.927:25): prog-id=17 op=UNLOAD
> [ 46.071997] audit: type=1334 audit(1586776582.927:26): prog-id=16 op=UNLOAD
> No of huge pages allocated = 160
>
> Full test log,
> https://lkft.validation.linaro.org/scheduler/job/1362495#L1308
>
> Build artifacts.
> https://builds.tuxbuild.com/w0ol7cCsGan0wzPp7bNqkg/
Thanks! I'll post a formal patch soon.
--
Peter Xu
On 4/11/20 11:54 PM, Naresh Kamboju wrote:
> On Linux mainline kernel 5.6.0 running kselftest vm compaction_test on i386
> kernel running on x86_64 devices we have noticed this Kernel BUG followed by
> Kernel panic.
Any chance we could talk you into doing a bisect on this sucker?
The "Bad swap file entry" message could be a lot of things.