On 08.10.24 08:51, syzbot wrote:
Hello, syzbot found the following issue on: HEAD commit: 58ca61c1a866 Add linux-next specific files for 20241004 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1265e7d0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=94f9caf16c0af42d dashboard link: https://syzkaller.appspot.com/bug?extid=619c487ed60780dab217 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ff0999f3e964/disk-58ca61c1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d0d9a5bad786/vmlinux-58ca61c1.xz kernel image: https://storage.googleapis.com/syzbot-assets/3b53cdc9ba34/bzImage-58ca61c1.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+619c487ed60780dab217@xxxxxxxxxxxxxxxxxxxxxxxxx cfg80211: Loading compiled-in X.509 certificates for regulatory database Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600' clk: Disabling unused clocks ALSA device list: #0: Dummy 1 #1: Loopback 1 #2: Virtual MIDI Card 1 md: Waiting for all devices to be available before autodetect md: If you don't use raid, use raid=noautodetect md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. EXT4-fs (sda1): mounted filesystem b4773fba-1738-4da0-8a90-0fe043d0a496 ro with ordered data mode. Quota mode: none. VFS: Mounted root (ext4 filesystem) readonly on device 8:1. devtmpfs: mounted Freeing unused kernel image (initmem) memory: 26720K Write protecting the kernel read-only data: 219136k Freeing unused kernel image (rodata/data gap) memory: 1108K x86/mm: Checked W+X mappings: passed, no W+X pages found. x86/mm: Checking user space page tables x86/mm: Checked W+X mappings: passed, no W+X pages found. Failed to set sysctl parameter 'max_rcu_stall_to_panic=1': parameter not found Run /sbin/init as init process page: refcount:1 mapcount:1 mapping:0000000000000000 index:0x7fffffffe pfn:0x13fe93 memcg:ffff888140adc000 anon flags: 0x17ff00000020008(uptodate|swapbacked|node=0|zone=2|lastcpupid=0x7ff) raw: 017ff00000020008 0000000000000000 dead000000000122 ffff888030587001 raw: 00000007fffffffe 0000000000000000 0000000100000000 ffff888140adc000 page dumped because: VM_BUG_ON_PAGE(PageAnonNotKsm(page)) page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 1, tgid 1 (swapper/0), ts 14891998308, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1545 [inline] get_page_from_freelist+0x3129/0x3270 mm/page_alloc.c:3493 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4769 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 folio_alloc_mpol_noprof mm/mempolicy.c:2283 [inline] vma_alloc_folio_noprof+0x12e/0x230 mm/mempolicy.c:2314 folio_prealloc+0x31/0x170 alloc_anon_folio mm/memory.c:4738 [inline] do_anonymous_page mm/memory.c:4795 [inline] do_pte_missing mm/memory.c:3971 [inline] handle_pte_fault+0x2518/0x6830 mm/memory.c:5778 __handle_mm_fault mm/memory.c:5921 [inline] handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6089 faultin_page mm/gup.c:1187 [inline] __get_user_pages+0x1b16/0x48d0 mm/gup.c:1485 __get_user_pages_locked mm/gup.c:1751 [inline] get_user_pages_remote+0x31e/0xb60 mm/gup.c:2618 get_arg_page+0x266/0x580 fs/exec.c:225 copy_string_kernel+0x148/0x1f0 fs/exec.c:684 kernel_execve+0x5e2/0xa50 fs/exec.c:1999 try_to_run_init_process init/main.c:1394 [inline] kernel_init+0xed/0x2b0 init/main.c:1522 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 page_owner free stack trace missing ------------[ cut here ]------------ kernel BUG at include/linux/page-flags.h:1134! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0-rc1-next-20241004-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:SetPageAnonExclusive include/linux/page-flags.h:1134 [inline] RIP: 0010:folio_add_new_anon_rmap+0x14d3/0x1fe0 mm/rmap.c:1442 Code: ff 0f 00 00 0f 84 9e 02 00 00 e8 28 91 a9 ff e9 fa ec ff ff e8 1e 91 a9 ff 48 8b 3c 24 48 c7 c6 e0 ff 15 8c e8 3e 13 f5 ff 90 <0f> 0b e8 06 91 a9 ff 48 89 ef 48 c7 c6 a0 00 16 8c e8 27 13 f5 ff RSP: 0000:ffffc90000067348 EFLAGS: 00010246 RAX: 3219d577e7cba600 RBX: 0000000000000001 RCX: ffffc90000066f03 RDX: 0000000000000003 RSI: ffffffff8c0adc40 RDI: ffffffff8c610f60 RBP: 0000000000000000 R08: ffffffff901d2caf R09: 1ffffffff203a595 R10: dffffc0000000000 R11: fffffbfff203a596 R12: 00000007fffffffe R13: 1ffff1100614ca00 R14: ffff888030587001 R15: ffff888030a65078 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000e734000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> do_anonymous_page mm/memory.c:4841 [inline] do_pte_missing mm/memory.c:3971 [inline] handle_pte_fault+0x4aec/0x6830 mm/memory.c:5778 __handle_mm_fault mm/memory.c:5921 [inline] handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6089 faultin_page mm/gup.c:1187 [inline] __get_user_pages+0x1b16/0x48d0 mm/gup.c:1485 __get_user_pages_locked mm/gup.c:1751 [inline] get_user_pages_remote+0x31e/0xb60 mm/gup.c:2618 get_arg_page+0x266/0x580 fs/exec.c:225 copy_string_kernel+0x148/0x1f0 fs/exec.c:684 kernel_execve+0x5e2/0xa50 fs/exec.c:1999 try_to_run_init_process init/main.c:1394 [inline] kernel_init+0xed/0x2b0 init/main.c:1522 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:SetPageAnonExclusive include/linux/page-flags.h:1134 [inline] RIP: 0010:folio_add_new_anon_rmap+0x14d3/0x1fe0 mm/rmap.c:1442 Code: ff 0f 00 00 0f 84 9e 02 00 00 e8 28 91 a9 ff e9 fa ec ff ff e8 1e 91 a9 ff 48 8b 3c 24 48 c7 c6 e0 ff 15 8c e8 3e 13 f5 ff 90 <0f> 0b e8 06 91 a9 ff 48 89 ef 48 c7 c6 a0 00 16 8c e8 27 13 f5 ff RSP: 0000:ffffc90000067348 EFLAGS: 00010246 RAX: 3219d577e7cba600 RBX: 0000000000000001 RCX: ffffc90000066f03 RDX: 0000000000000003 RSI: ffffffff8c0adc40 RDI: ffffffff8c610f60 RBP: 0000000000000000 R08: ffffffff901d2caf R09: 1ffffffff203a595 R10: dffffc0000000000 R11: fffffbfff203a596 R12: 00000007fffffffe R13: 1ffff1100614ca00 R14: ffff888030587001 R15: ffff888030a65078 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000e734000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
#syz fix: mm-add-pageanonnotksm-fix -- Cheers, David / dhildenb
