BUG: Bad page map in process syz-executor.4 pte:fffffc3a14120 pmd:78699067
page:ffffea0000f17ac0 refcount:1 mapcount:-1 mapping:ffff8880288d4c98 index:0x14d pfn:0x3c5eb
memcg:ffff888028c6c000
aops:shmem_aops ino:6 dentry name:"memfd:syz-shared-mem"
flags: 0xfff0000008012c(referenced|uptodate|lru|active|swapbacked|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfffffffe()
raw: 00fff0000008012c ffffea0000f17a48 ffffea0000fa4f48 ffff8880288d4c98
raw: 000000000000014d 0000000000000000 00000001fffffffe ffff888028c6c000
page dumped because: bad pte
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 9390, tgid 9389 (syz-executor.4), ts 387110980054, free_ts 386639496949
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
__alloc_pages+0x255/0x670 mm/page_alloc.c:4426
__folio_alloc+0x13/0x30 mm/page_alloc.c:4458
vma_alloc_folio+0x48a/0x9a0 mm/mempolicy.c:2259
shmem_alloc_folio mm/shmem.c:1658 [inline]
shmem_alloc_and_acct_folio+0x438/0x9b0 mm/shmem.c:1683
shmem_get_folio_gfp+0xca4/0x2b60 mm/shmem.c:2020
shmem_fault+0x219/0x7e0 mm/shmem.c:2227
__do_fault+0x133/0x4e0 mm/memory.c:4204
do_read_fault mm/memory.c:4568 [inline]
do_fault mm/memory.c:4705 [inline]
do_pte_missing mm/memory.c:3669 [inline]
handle_pte_fault mm/memory.c:4978 [inline]
__handle_mm_fault mm/memory.c:5119 [inline]
handle_mm_fault+0x428e/0x62b0 mm/memory.c:5284
faultin_page mm/gup.c:956 [inline]
__get_user_pages+0x6bd/0x15f0 mm/gup.c:1239
__get_user_pages_locked mm/gup.c:1504 [inline]
get_dump_page+0x146/0x2b0 mm/gup.c:2018
dump_user_range+0x126/0x910 fs/coredump.c:913
elf_core_dump+0x3c91/0x4540 fs/binfmt_elf.c:2142
do_coredump+0x1b73/0x2ab0 fs/coredump.c:764
get_signal+0x145e/0x1840 kernel/signal.c:2878
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451
release_pages+0x2113/0x23f0 mm/swap.c:1042
__folio_batch_release+0x84/0x100 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
shmem_undo_range+0x6ad/0x19c0 mm/shmem.c:1022
shmem_truncate_range mm/shmem.c:1114 [inline]
shmem_evict_inode+0x29e/0xa80 mm/shmem.c:1243
evict+0x2a4/0x620 fs/inode.c:664
__dentry_kill+0x436/0x650 fs/dcache.c:607
dentry_kill+0xbb/0x290
dput+0x21e/0x470 fs/dcache.c:913
__fput+0x60d/0x910 fs/file_table.c:392
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
addr:0000000020002000 vm_flags:080000d0 anon_vma:0000000000000000 mapping:ffff88808304ba50 index:1
file:bus fault:xfs_filemap_fault mmap:xfs_file_mmap read_folio:xfs_vm_read_folio
CPU: 0 PID: 28421 Comm: syz-executor.4 Not tainted 6.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
print_bad_pte+0x581/0x5c0 mm/memory.c:535
zap_pte_range mm/memory.c:1458 [inline]
zap_pmd_range mm/memory.c:1573 [inline]
zap_pud_range mm/memory.c:1602 [inline]
zap_p4d_range mm/memory.c:1623 [inline]
unmap_page_range+0x1a76/0x3320 mm/memory.c:1644
unmap_vmas+0x2b8/0x460 mm/memory.c:1731
exit_mmap+0x297/0xc50 mm/mmap.c:3210
__mmput+0x115/0x3c0 kernel/fork.c:1349
exit_mm+0x21f/0x300 kernel/exit.c:567
do_exit+0x9af/0x2650 kernel/exit.c:861
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
get_signal+0x175d/0x1840 kernel/signal.c:2892
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdd2587cae9
Code: Unable to access opcode bytes at 0x7fdd2587cabf.
RSP: 002b:00007fdd265410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffe5 RBX: 00007fdd2599c050 RCX: 00007fdd2587cae9
RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007
RBP: 00007fdd258c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fdd2599c050 R15: 00007ffc7982b738
BUG: Bad page map in process syz-executor.4 pte:fffffc3a15120 pmd:78699067
page:ffffea0000f17a80 refcount:2 mapcount:-1 mapping:ffff88814895aaf8 index:0x21898 pfn:0x3c5ea
memcg:ffff888015e52000
aops:def_blk_aops ino:800001
flags: 0xfff00000008124(referenced|lru|active|private|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfffffffe()
raw: 00fff00000008124 ffffea000200ac08 ffffea000201d8c8 ffff88814895aaf8
raw: 0000000000021898 ffff88808310e828 00000002fffffffe ffff888015e52000
page dumped because: bad pte
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 4451, tgid 4451 (jbd2/sda1-8), ts 649056397874, free_ts 649055554078
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
__alloc_pages+0x255/0x670 mm/page_alloc.c:4426
folio_alloc+0x1e/0x60 mm/mempolicy.c:2308
filemap_alloc_folio+0xde/0x500 mm/filemap.c:976
__filemap_get_folio+0x431/0xbb0 mm/filemap.c:1936
grow_dev_page fs/buffer.c:1058 [inline]
grow_buffers fs/buffer.c:1118 [inline]
__getblk_slow fs/buffer.c:1145 [inline]
__getblk_gfp+0x218/0x630 fs/buffer.c:1439
__getblk include/linux/buffer_head.h:399 [inline]
jbd2_journal_get_descriptor_buffer+0x15e/0x440 fs/jbd2/journal.c:1010
journal_submit_commit_record+0x11e/0xa90 fs/jbd2/commit.c:129
jbd2_journal_commit_transaction+0x3c38/0x6630 fs/jbd2/commit.c:880
kjournald2+0x462/0x850 fs/jbd2/journal.c:201
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451
release_pages+0x2113/0x23f0 mm/swap.c:1042
tlb_batch_pages_flush mm/mmu_gather.c:98 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:293 [inline]
tlb_flush_mmu+0x34c/0x4e0 mm/mmu_gather.c:300
tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:392
unmap_region+0x300/0x350 mm/mmap.c:2318
do_vmi_align_munmap+0x121e/0x1850 mm/mmap.c:2555
do_vmi_munmap+0x24d/0x2d0 mm/mmap.c:2623
__vm_munmap+0x230/0x450 mm/mmap.c:2908
__do_sys_munmap mm/mmap.c:2925 [inline]
__se_sys_munmap mm/mmap.c:2922 [inline]
__x64_sys_munmap+0x69/0x80 mm/mmap.c:2922
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
addr:0000000020003000 vm_flags:080000d0 anon_vma:0000000000000000 mapping:ffff88808304ba50 index:2
file:bus fault:xfs_filemap_fault mmap:xfs_file_mmap read_folio:xfs_vm_read_folio
CPU: 1 PID: 28421 Comm: syz-executor.4 Tainted: G B 6.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
print_bad_pte+0x581/0x5c0 mm/memory.c:535
zap_pte_range mm/memory.c:1458 [inline]
zap_pmd_range mm/memory.c:1573 [inline]
zap_pud_range mm/memory.c:1602 [inline]
zap_p4d_range mm/memory.c:1623 [inline]
unmap_page_range+0x1a76/0x3320 mm/memory.c:1644
unmap_vmas+0x2b8/0x460 mm/memory.c:1731
exit_mmap+0x297/0xc50 mm/mmap.c:3210
__mmput+0x115/0x3c0 kernel/fork.c:1349
exit_mm+0x21f/0x300 kernel/exit.c:567
do_exit+0x9af/0x2650 kernel/exit.c:861
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
get_signal+0x175d/0x1840 kernel/signal.c:2892
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdd2587cae9
Code: Unable to access opcode bytes at 0x7fdd2587cabf.
RSP: 002b:00007fdd265410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffe5 RBX: 00007fdd2599c050 RCX: 00007fdd2587cae9
RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007
RBP: 00007fdd258c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fdd2599c050 R15: 00007ffc7982b738
BUG: Bad page map in process syz-executor.4 pte:fffffc3a16120 pmd:78699067
page:ffffea0000f17a40 refcount:1 mapcount:-1 mapping:ffff8880288d4c98 index:0x14c pfn:0x3c5e9
memcg:ffff888028c6c000
aops:shmem_aops ino:6 dentry name:"memfd:syz-shared-mem"
flags: 0xfff0000008012c(referenced|uptodate|lru|active|swapbacked|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfffffffe()
raw: 00fff0000008012c ffffea0000e71048 ffffea0000f17ac8 ffff8880288d4c98
raw: 000000000000014c 0000000000000000 00000001fffffffe ffff888028c6c000
page dumped because: bad pte
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 9390, tgid 9389 (syz-executor.4), ts 387110763470, free_ts 386639527110
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
__alloc_pages+0x255/0x670 mm/page_alloc.c:4426
__folio_alloc+0x13/0x30 mm/page_alloc.c:4458
vma_alloc_folio+0x48a/0x9a0 mm/mempolicy.c:2259
shmem_alloc_folio mm/shmem.c:1658 [inline]
shmem_alloc_and_acct_folio+0x438/0x9b0 mm/shmem.c:1683
shmem_get_folio_gfp+0xca4/0x2b60 mm/shmem.c:2020
shmem_fault+0x219/0x7e0 mm/shmem.c:2227
__do_fault+0x133/0x4e0 mm/memory.c:4204
do_read_fault mm/memory.c:4568 [inline]
do_fault mm/memory.c:4705 [inline]
do_pte_missing mm/memory.c:3669 [inline]
handle_pte_fault mm/memory.c:4978 [inline]
__handle_mm_fault mm/memory.c:5119 [inline]
handle_mm_fault+0x428e/0x62b0 mm/memory.c:5284
faultin_page mm/gup.c:956 [inline]
__get_user_pages+0x6bd/0x15f0 mm/gup.c:1239
__get_user_pages_locked mm/gup.c:1504 [inline]
get_dump_page+0x146/0x2b0 mm/gup.c:2018
dump_user_range+0x126/0x910 fs/coredump.c:913
elf_core_dump+0x3c91/0x4540 fs/binfmt_elf.c:2142
do_coredump+0x1b73/0x2ab0 fs/coredump.c:764
get_signal+0x145e/0x1840 kernel/signal.c:2878
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451
release_pages+0x2113/0x23f0 mm/swap.c:1042
__folio_batch_release+0x84/0x100 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
shmem_undo_range+0x6ad/0x19c0 mm/shmem.c:1022
shmem_truncate_range mm/shmem.c:1114 [inline]
shmem_evict_inode+0x29e/0xa80 mm/shmem.c:1243
evict+0x2a4/0x620 fs/inode.c:664
__dentry_kill+0x436/0x650 fs/dcache.c:607
dentry_kill+0xbb/0x290
dput+0x21e/0x470 fs/dcache.c:913
__fput+0x60d/0x910 fs/file_table.c:392
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
addr:0000000020004000 vm_flags:080000d0 anon_vma:0000000000000000 mapping:ffff88808304ba50 index:3
file:bus fault:xfs_filemap_fault mmap:xfs_file_mmap read_folio:xfs_vm_read_folio
CPU: 1 PID: 28421 Comm: syz-executor.4 Tainted: G B 6.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
print_bad_pte+0x581/0x5c0 mm/memory.c:535
zap_pte_range mm/memory.c:1458 [inline]
zap_pmd_range mm/memory.c:1573 [inline]
zap_pud_range mm/memory.c:1602 [inline]
zap_p4d_range mm/memory.c:1623 [inline]
unmap_page_range+0x1a76/0x3320 mm/memory.c:1644
unmap_vmas+0x2b8/0x460 mm/memory.c:1731
exit_mmap+0x297/0xc50 mm/mmap.c:3210
__mmput+0x115/0x3c0 kernel/fork.c:1349
exit_mm+0x21f/0x300 kernel/exit.c:567
do_exit+0x9af/0x2650 kernel/exit.c:861
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
get_signal+0x175d/0x1840 kernel/signal.c:2892
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdd2587cae9
Code: Unable to access opcode bytes at 0x7fdd2587cabf.
RSP: 002b:00007fdd265410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffe5 RBX: 00007fdd2599c050 RCX: 00007fdd2587cae9
RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007
RBP: 00007fdd258c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fdd2599c050 R15: 00007ffc7982b738
BUG: Bad page map in process syz-executor.4 pte:fffffc1d69120 pmd:78699067
page:ffffea0000f8a580 refcount:0 mapcount:-1 mapping:0000000000000000 index:0x1 pfn:0x3e296
flags: 0xfff00000000004(referenced|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfffffffe()
raw: 00fff00000000004 ffffea0000f94e48 ffffea000201b348 0000000000000000
raw: 0000000000000001 0000000000000000 00000000fffffffe 0000000000000000
page dumped because: bad pte
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 28358, tgid 28357 (syz-executor.5), ts 1378783626578, free_ts 1382180438741
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
__alloc_pages+0x255/0x670 mm/page_alloc.c:4426
__folio_alloc+0x13/0x30 mm/page_alloc.c:4458
vma_alloc_folio+0x48a/0x9a0 mm/mempolicy.c:2259
shmem_alloc_folio mm/shmem.c:1658 [inline]
shmem_alloc_and_acct_folio+0x438/0x9b0 mm/shmem.c:1683
shmem_get_folio_gfp+0xca4/0x2b60 mm/shmem.c:2020
shmem_get_folio mm/shmem.c:2143 [inline]
shmem_write_begin+0x170/0x300 mm/shmem.c:2688
generic_perform_write+0x31b/0x630 mm/filemap.c:3969
shmem_file_write_iter+0xfc/0x120 mm/shmem.c:2865
call_write_iter include/linux/fs.h:1956 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x782/0xaf0 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451
release_pages+0x2113/0x23f0 mm/swap.c:1042
__folio_batch_release+0x84/0x100 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
shmem_undo_range+0x6ad/0x19c0 mm/shmem.c:1022
shmem_truncate_range mm/shmem.c:1114 [inline]
shmem_evict_inode+0x29e/0xa80 mm/shmem.c:1243
evict+0x2a4/0x620 fs/inode.c:664
__dentry_kill+0x436/0x650 fs/dcache.c:607
dentry_kill+0xbb/0x290
dput+0x21e/0x470 fs/dcache.c:913
__fput+0x60d/0x910 fs/file_table.c:392
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
addr:0000000020007000 vm_flags:080000d0 anon_vma:0000000000000000 mapping:ffff88808304ba50 index:6
file:bus fault:xfs_filemap_fault mmap:xfs_file_mmap read_folio:xfs_vm_read_folio
CPU: 1 PID: 28421 Comm: syz-executor.4 Tainted: G B 6.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
print_bad_pte+0x581/0x5c0 mm/memory.c:535
zap_pte_range mm/memory.c:1458 [inline]
zap_pmd_range mm/memory.c:1573 [inline]
zap_pud_range mm/memory.c:1602 [inline]
zap_p4d_range mm/memory.c:1623 [inline]
unmap_page_range+0x1a76/0x3320 mm/memory.c:1644
unmap_vmas+0x2b8/0x460 mm/memory.c:1731
exit_mmap+0x297/0xc50 mm/mmap.c:3210
__mmput+0x115/0x3c0 kernel/fork.c:1349
exit_mm+0x21f/0x300 kernel/exit.c:567
do_exit+0x9af/0x2650 kernel/exit.c:861
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
get_signal+0x175d/0x1840 kernel/signal.c:2892
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdd2587cae9
Code: Unable to access opcode bytes at 0x7fdd2587cabf.
RSP: 002b:00007fdd265410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffe5 RBX: 00007fdd2599c050 RCX: 00007fdd2587cae9
RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007
RBP: 00007fdd258c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fdd2599c050 R15: 00007ffc7982b738
BUG: Bad page map in process syz-executor.4 pte:800000003e295027 pmd:7cde7067
page:ffffea0000f8a540 refcount:2 mapcount:-1 mapping:ffff8880288d5338 index:0x44 pfn:0x3e295
memcg:ffff888028c6c000
aops:shmem_aops ino:7 dentry name:"memfd:syz-shared-mem"
flags: 0xfff0000008012c(referenced|uptodate|lru|active|swapbacked|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfffffffe()
raw: 00fff0000008012c ffffea0000f0a408 ffff8880293c8010 ffff8880288d5338
raw: 0000000000000044 0000000000000000 00000002fffffffe ffff888028c6c000
page dumped because: bad pte
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 9390, tgid 9389 (syz-executor.4), ts 384585535332, free_ts 383096172854
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
__alloc_pages+0x255/0x670 mm/page_alloc.c:4426
__folio_alloc+0x13/0x30 mm/page_alloc.c:4458
vma_alloc_folio+0x48a/0x9a0 mm/mempolicy.c:2259
shmem_alloc_folio mm/shmem.c:1658 [inline]
shmem_alloc_and_acct_folio+0x438/0x9b0 mm/shmem.c:1683
shmem_get_folio_gfp+0xca4/0x2b60 mm/shmem.c:2020
shmem_fault+0x219/0x7e0 mm/shmem.c:2227
__do_fault+0x133/0x4e0 mm/memory.c:4204
do_read_fault mm/memory.c:4568 [inline]
do_fault mm/memory.c:4705 [inline]
do_pte_missing mm/memory.c:3669 [inline]
handle_pte_fault mm/memory.c:4978 [inline]
__handle_mm_fault mm/memory.c:5119 [inline]
handle_mm_fault+0x428e/0x62b0 mm/memory.c:5284
faultin_page mm/gup.c:956 [inline]
__get_user_pages+0x6bd/0x15f0 mm/gup.c:1239
__get_user_pages_locked mm/gup.c:1504 [inline]
get_dump_page+0x146/0x2b0 mm/gup.c:2018
dump_user_range+0x126/0x910 fs/coredump.c:913
elf_core_dump+0x3c91/0x4540 fs/binfmt_elf.c:2142
do_coredump+0x1b73/0x2ab0 fs/coredump.c:764
get_signal+0x145e/0x1840 kernel/signal.c:2878
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451
release_pages+0x2113/0x23f0 mm/swap.c:1042
__folio_batch_release+0x84/0x100 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
shmem_undo_range+0x6ad/0x19c0 mm/shmem.c:1022
shmem_truncate_range mm/shmem.c:1114 [inline]
shmem_evict_inode+0x29e/0xa80 mm/shmem.c:1243
evict+0x2a4/0x620 fs/inode.c:664
__dentry_kill+0x436/0x650 fs/dcache.c:607
dentry_kill+0xbb/0x290
dput+0x21e/0x470 fs/dcache.c:913
__fput+0x60d/0x910 fs/file_table.c:392
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
addr:0000001b2fe64000 vm_flags:080000fb anon_vma:0000000000000000 mapping:ffff8880288d5338 index:44
file:memfd:syz-shared-mem fault:shmem_fault mmap:shmem_mmap read_folio:0x0
CPU: 1 PID: 28421 Comm: syz-executor.4 Tainted: G B 6.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
print_bad_pte+0x581/0x5c0 mm/memory.c:535
zap_pte_range mm/memory.c:1458 [inline]
zap_pmd_range mm/memory.c:1573 [inline]
zap_pud_range mm/memory.c:1602 [inline]
zap_p4d_range mm/memory.c:1623 [inline]
unmap_page_range+0x1a76/0x3320 mm/memory.c:1644
unmap_vmas+0x2b8/0x460 mm/memory.c:1731
exit_mmap+0x297/0xc50 mm/mmap.c:3210
__mmput+0x115/0x3c0 kernel/fork.c:1349
exit_mm+0x21f/0x300 kernel/exit.c:567
do_exit+0x9af/0x2650 kernel/exit.c:861
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
get_signal+0x175d/0x1840 kernel/signal.c:2892
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdd2587cae9
Code: Unable to access opcode bytes at 0x7fdd2587cabf.
RSP: 002b:00007fdd265410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffe5 RBX: 00007fdd2599c050 RCX: 00007fdd2587cae9
RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007
RBP: 00007fdd258c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fdd2599c050 R15: 00007ffc7982b738
page:ffffea0000f8a580 refcount:0 mapcount:-1 mapping:0000000000000000 index:0x1 pfn:0x3e296
flags: 0xfff00000000004(referenced|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfffffffe()
raw: 00fff00000000004 ffffea0000f94e48 ffffea000201b348 0000000000000000
raw: 0000000000000001 0000000000000000 00000000fffffffe 0000000000000000
page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 28358, tgid 28357 (syz-executor.5), ts 1378783626578, free_ts 1382180438741
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
__alloc_pages+0x255/0x670 mm/page_alloc.c:4426
__folio_alloc+0x13/0x30 mm/page_alloc.c:4458
vma_alloc_folio+0x48a/0x9a0 mm/mempolicy.c:2259
shmem_alloc_folio mm/shmem.c:1658 [inline]
shmem_alloc_and_acct_folio+0x438/0x9b0 mm/shmem.c:1683
shmem_get_folio_gfp+0xca4/0x2b60 mm/shmem.c:2020
shmem_get_folio mm/shmem.c:2143 [inline]
shmem_write_begin+0x170/0x300 mm/shmem.c:2688
generic_perform_write+0x31b/0x630 mm/filemap.c:3969
shmem_file_write_iter+0xfc/0x120 mm/shmem.c:2865
call_write_iter include/linux/fs.h:1956 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x782/0xaf0 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451
release_pages+0x2113/0x23f0 mm/swap.c:1042
__folio_batch_release+0x84/0x100 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
shmem_undo_range+0x6ad/0x19c0 mm/shmem.c:1022
shmem_truncate_range mm/shmem.c:1114 [inline]
shmem_evict_inode+0x29e/0xa80 mm/shmem.c:1243
evict+0x2a4/0x620 fs/inode.c:664
__dentry_kill+0x436/0x650 fs/dcache.c:607
dentry_kill+0xbb/0x290
dput+0x21e/0x470 fs/dcache.c:913
__fput+0x60d/0x910 fs/file_table.c:392
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1095!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 28421 Comm: syz-executor.4 Tainted: G B 6.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:put_page_testzero include/linux/mm.h:1095 [inline]
RIP: 0010:folio_put_testzero include/linux/mm.h:1101 [inline]
RIP: 0010:release_pages+0x2174/0x23f0 mm/swap.c:1000
Code: 00 0f 85 8b 02 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 9b a5 c8 ff 4c 89 ff 48 c7 c6 a0 45 13 8b e8 1c 86 0a 00 <0f> 0b e8 85 a5 c8 ff 4c 89 ff 48 c7 c6 a0 45 13 8b e8 06 86 0a 00
RSP: 0018:ffffc9001b437240 EFLAGS: 00010046
RAX: 87d1e44db1702900 RBX: 0000000000000000 RCX: ffffffff816d75c0
RDX: 0000000000000000 RSI: ffffffff8b599980 RDI: ffffffff8b599940
RBP: ffffc9001b437378 R08: ffffffff8e9a792f R09: 1ffffffff1d34f25
R10: dffffc0000000000 R11: fffffbfff1d34f26 R12: dffffc0000000000
R13: ffff8880293c8000 R14: ffffea0000f8a5b4 R15: ffffea0000f8a580
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556379938 CR3: 000000001ca15000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tlb_batch_pages_flush mm/mmu_gather.c:98 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:293 [inline]
tlb_flush_mmu+0x34c/0x4e0 mm/mmu_gather.c:300
zap_pte_range mm/memory.c:1534 [inline]
zap_pmd_range mm/memory.c:1573 [inline]
zap_pud_range mm/memory.c:1602 [inline]
zap_p4d_range mm/memory.c:1623 [inline]
unmap_page_range+0x29dc/0x3320 mm/memory.c:1644
unmap_vmas+0x2b8/0x460 mm/memory.c:1731
exit_mmap+0x297/0xc50 mm/mmap.c:3210
__mmput+0x115/0x3c0 kernel/fork.c:1349
exit_mm+0x21f/0x300 kernel/exit.c:567
do_exit+0x9af/0x2650 kernel/exit.c:861
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
get_signal+0x175d/0x1840 kernel/signal.c:2892
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdd2587cae9
Code: Unable to access opcode bytes at 0x7fdd2587cabf.
RSP: 002b:00007fdd265410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffe5 RBX: 00007fdd2599c050 RCX: 00007fdd2587cae9
RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007
RBP: 00007fdd258c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fdd2599c050 R15: 00007ffc7982b738
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:put_page_testzero include/linux/mm.h:1095 [inline]
RIP: 0010:folio_put_testzero include/linux/mm.h:1101 [inline]
RIP: 0010:release_pages+0x2174/0x23f0 mm/swap.c:1000
Code: 00 0f 85 8b 02 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 9b a5 c8 ff 4c 89 ff 48 c7 c6 a0 45 13 8b e8 1c 86 0a 00 <0f> 0b e8 85 a5 c8 ff 4c 89 ff 48 c7 c6 a0 45 13 8b e8 06 86 0a 00
RSP: 0018:ffffc9001b437240 EFLAGS: 00010046
RAX: 87d1e44db1702900 RBX: 0000000000000000 RCX: ffffffff816d75c0
RDX: 0000000000000000 RSI: ffffffff8b599980 RDI: ffffffff8b599940
RBP: ffffc9001b437378 R08: ffffffff8e9a792f R09: 1ffffffff1d34f25
R10: dffffc0000000000 R11: fffffbfff1d34f26 R12: dffffc0000000000
R13: ffff8880293c8000 R14: ffffea0000f8a5b4 R15: ffffea0000f8a580
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556379938 CR3: 000000001ca15000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400