https://bugzilla.kernel.org/show_bug.cgi?id=220575
--- Comment #4 from JY ([email protected]) --- (In reply to Chao Yu from comment #3) > I meant using trace32 to dump field value of victim page, something like > that. :) For some reasons, I can't dump the victim page with trace32. So I'm using 'page_owner' and add new member '_private' to the struct page. I Modified the function 'set_page_private()' in include/linux/mm_types.h static inline void set_page_private(...) { page->private = private; + if (!private) + page->_private = private; } also modified the function 'f2fs_is_cp_guaranteed' bool f2fs_is_cp_guaranteed(const struct page *page) { struct address_space *mapping = page->mapping; struct inode *inode; struct f2fs_sb_info *sbi; if (fscrypt_is_bounce_page(page)) { + pr_crit("bounced_page:0xpx, pp:0x%px, fscrypt_pagecache_page(page):0x%px\n", page, page->_private, fscrypt_pagecache_page(page)); + if (page->_private) + dump_page(page->_private, "dump _private page"); + else + dump_page(page, "dump bounce page"); return page_private_gcing(fscrypt_pagecache_page(page)); } And I got the log as below: [2025-09-23 12:54:07.401] [ 2223.580361][T18170] bounced_page:0xfffffffe82282290, pp:0x0000000000000000, fscrypt_pagecache_page(page):0x0000000000000000 [2025-09-23 12:54:07.522] [ 2223.636124][T18170] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xc02b7 pfn:0x6e6d5 [2025-09-23 12:54:07.577] [ 2223.656779][T18170] flags: 0x0(zone=0) [2025-09-23 12:54:07.577] [ 2223.665281][T18170] page_type: f2(table) [2025-09-23 12:54:07.577] [ 2223.673618][T18170] raw: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [2025-09-23 12:54:07.577] [ 2223.691017][T18170] raw: 00000000000c02b7 0000000000000000 00000001f2000000 0000000000000000 [2025-09-23 12:54:07.577] [ 2223.709638][T18170] raw: 0000000000000000 0000000000000000 [2025-09-23 12:54:07.633] [ 2223.734520][T18170] page_owner tracks the page as allocated [2025-09-23 12:54:07.633] [ 2223.740836][T18170] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x540dc0(GFP_USER|__GFP_COMP|__GFP_ZERO|__GFP_ACCOUNT), pid 23744, tgid 23744 (sync), ts 2223627020157, free_ts 2223626903324 [2025-09-23 12:54:07.690] [ 2223.760701][T18170] post_alloc_hook+0x1d4/0x1ec [2025-09-23 12:54:07.690] [ 2223.765688][T18170] prep_new_page+0x30/0x154 [2025-09-23 12:54:07.690] [ 2223.770483][T18170] get_page_from_freelist+0x11e8/0x127c [2025-09-23 12:54:07.690] [ 2223.776402][T18170] __alloc_pages_noprof+0x1b0/0x448 [2025-09-23 12:54:07.690] [ 2223.781758][T18170] pmd_alloc_one_noprof+0x40/0x110 [2025-09-23 12:54:07.690] [ 2223.787714][T18170] __pmd_alloc+0x34/0x1a8 [2025-09-23 12:54:07.690] [ 2223.792274][T18170] move_page_tables+0x868/0x928 [2025-09-23 12:54:07.690] [ 2223.797303][T18170] relocate_vma_down+0x118/0x1f8 [2025-09-23 12:54:07.690] [ 2223.802601][T18170] setup_arg_pages+0x204/0x33c [2025-09-23 12:54:07.690] [ 2223.807480][T18170] load_elf_binary+0x4f0/0xd68 [2025-09-23 12:54:07.690] [ 2223.822457][T18170] bprm_execve+0x2c8/0x57c [2025-09-23 12:54:07.745] [ 2223.827615][T18170] do_execveat_common+0x26c/0x2c4 [2025-09-23 12:54:07.745] [ 2223.832943][T18170] __arm64_compat_sys_execve+0x48/0x60 [2025-09-23 12:54:07.745] [ 2223.839441][T18170] invoke_syscall+0x60/0x114 [2025-09-23 12:54:07.745] [ 2223.844123][T18170] el0_svc_common+0xb0/0xe4 [2025-09-23 12:54:07.745] [ 2223.850297][T18170] do_el0_svc_compat+0x24/0x30 [2025-09-23 12:54:07.745] [ 2223.856538][T18170] page last free pid 23744 tgid 23744 stack trace: [2025-09-23 12:54:07.745] [ 2223.865252][T18170] free_unref_page+0x828/0x978 [2025-09-23 12:54:07.801] [ 2223.870493][T18170] __free_pages+0xe4/0x238 [2025-09-23 12:54:07.801] [ 2223.875113][T18170] free_pages+0x80/0x9c [2025-09-23 12:54:07.801] [ 2223.879228][T18170] pgd_free+0x20/0x30 [2025-09-23 12:54:07.801] [ 2223.883162][T18170] __mmdrop+0x54/0x168 [2025-09-23 12:54:07.801] [ 2223.887624][T18170] __mmput+0x14c/0x170 [2025-09-23 12:54:07.801] [ 2223.891790][T18170] mmput+0x38/0xd8 [2025-09-23 12:54:07.801] [ 2223.895457][T18170] exec_mmap+0x1c4/0x238 [2025-09-23 12:54:07.801] [ 2223.899907][T18170] begin_new_exec+0x3cc/0x654 [2025-09-23 12:54:07.801] [ 2223.905047][T18170] load_elf_binary+0x39c/0xd68 [2025-09-23 12:54:07.801] [ 2223.909934][T18170] bprm_execve+0x2c8/0x57c [2025-09-23 12:54:07.801] [ 2223.914547][T18170] do_execveat_common+0x26c/0x2c4 [2025-09-23 12:54:07.801] [ 2223.919902][T18170] __arm64_compat_sys_execve+0x48/0x60 [2025-09-23 12:54:07.861] [ 2223.925625][T18170] invoke_syscall+0x60/0x114 [2025-09-23 12:54:07.861] [ 2223.930483][T18170] el0_svc_common+0xb0/0xe4 [2025-09-23 12:54:07.861] [ 2223.935095][T18170] do_el0_svc_compat+0x24/0x30 -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
