ci2 starts bisection 2025-02-17 23:49:40.697575265 +0000 UTC m=+10180.168246398 bisecting fixing commit since fa74641fb6b93a19ccb50579886ecc98320230f9 building syzkaller on 4bce1a3e705a8b62de8194bdb28f5eef89c8feec ensuring issue is reproducible on original commit fa74641fb6b93a19ccb50579886ecc98320230f9 testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dd11cfd5159ce16a2a53a326c226b2b1bb9c50e345c8156d350f59284a673f31 run #0: infra problem: failed to get create instance operation operation-1739836638128-62e5f48c86af8-0dc60eb2-f9213cf6: googleapi: Error 503: Authentication backend unavailable., backendError run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #10: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #11: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #12: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #13: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #14: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #15: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #16: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #17: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #18: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #19: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock representative crash: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 702dc14db2fbbd9b571007f1ab36818e1ec8b96f4558a207a6ee91b5af8262ff run #0: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed kconfig minimization: base=3823 full=7524 leaves diff=1995 split chunks (needed=false): <1995> split chunk #0 of len 1995 into 5 parts testing without sub-chunk 1/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 855565e118fcf7ef50ba9fc6417127db69012581609bf44306fb5cdc5caa7266 run #0: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3a67e5844d467cba5af5b637ff3db7d93a219fa66925bab21541c4450c72ffbd run #0: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 468df4a8499fa6694a3ca1dda98d72f919bddf70148cf160853db144cdc736ed run #0: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e92cc3bec878e5083f5d1c953b6d980460840a505b2de39ffa2dc26e318656f2 run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 13529952d29a43eb69e18abda6ff043e5ce374c3e8b6da2a601ce5017a345bee run #0: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD 0cbb5f65e52f3e66410a7fe0edf75e1b2bf41e80 testing commit 0cbb5f65e52f3e66410a7fe0edf75e1b2bf41e80 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2e9d3e8f83d6a8d8081220e8652a077ae1c3671ad0ba92579f8a2346c7d60837 run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock representative crash: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock, types: [KASAN] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h4m59.676454694s (build: 36m14.061080465s, test: 25m43.649911665s) crash still not fixed or there were kernel test errors commit msg: Linux 6.1.128 crash: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock loop0: detected capacity change from 0 to 2048 EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. ================================================================== BUG: KASAN: slab-out-of-bounds in ext4_read_inline_data fs/ext4/inline.c:210 [inline] BUG: KASAN: slab-out-of-bounds in ext4_convert_inline_data_nolock+0x280/0x980 fs/ext4/inline.c:1216 Read of size 20 at addr ffff88811bbea1a3 by task syz-executor.0/1450 CPU: 1 PID: 1450 Comm: syz-executor.0 Not tainted 6.1.128-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xf4/0x251 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:427 kasan_report+0x136/0x160 mm/kasan/report.c:531 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 memcpy+0x25/0x60 mm/kasan/shadow.c:65 ext4_read_inline_data fs/ext4/inline.c:210 [inline] ext4_convert_inline_data_nolock+0x280/0x980 fs/ext4/inline.c:1216 ext4_convert_inline_data+0x3b8/0x4d0 fs/ext4/inline.c:2096 ext4_fallocate+0x136/0x17b0 fs/ext4/extents.c:4754 vfs_fallocate+0x30c/0x3d0 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xa6/0xd0 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f55e7a5a959 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f55e75dd0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f55e7b79f80 RCX: 00007f55e7a5a959 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f55e7ab6c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f55e7b79f80 R15: 00007ffc4379fd48 Allocated by task 1350: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x54/0x3e0 mm/slab.h:737 kmem_cache_alloc_bulk+0x2d4/0x360 mm/slub.c:3854 mt_alloc_bulk lib/maple_tree.c:157 [inline] mas_alloc_nodes+0x359/0x680 lib/maple_tree.c:1299 mas_node_count_gfp lib/maple_tree.c:1359 [inline] mas_preallocate+0xee/0x290 lib/maple_tree.c:5815 vma_expand+0x1f9/0x720 mm/mmap.c:543 __mmap_region mm/mmap.c:2728 [inline] mmap_region+0xbe9/0x1bb0 mm/mmap.c:2904 do_mmap+0x69e/0xb60 mm/mmap.c:1424 vm_mmap_pgoff+0x1b7/0x280 mm/util.c:520 ksys_mmap_pgoff+0x2cf/0x3b0 mm/mmap.c:1470 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Freed by task 19: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0x122/0x1e0 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x2e8/0x510 mm/slub.c:3683 rcu_do_batch kernel/rcu/tree.c:2297 [inline] rcu_core+0x964/0x1480 kernel/rcu/tree.c:2557 handle_softirqs+0x1b9/0x560 kernel/softirq.c:578 run_ksoftirqd+0x24/0x30 kernel/softirq.c:945 smpboot_thread_fn+0x577/0x7d0 kernel/smpboot.c:164 kthread+0x1e8/0x240 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 call_rcu+0x149/0x830 kernel/rcu/tree.c:2845 mas_wr_node_store lib/maple_tree.c:4230 [inline] mas_wr_modify+0x457b/0x5fb0 lib/maple_tree.c:4429 mas_store_prealloc+0x24e/0x3b0 lib/maple_tree.c:5797 __vma_adjust+0xe31/0x12b0 mm/mmap.c:823 __split_vma+0x31f/0x440 do_mas_align_munmap+0x3fe/0x11a0 mm/mmap.c:2468 do_mas_munmap+0x195/0x1f0 mm/mmap.c:2638 __mmap_region mm/mmap.c:2686 [inline] mmap_region+0x77f/0x1bb0 mm/mmap.c:2904 do_mmap+0x69e/0xb60 mm/mmap.c:1424 vm_mmap_pgoff+0x1b7/0x280 mm/util.c:520 ksys_mmap_pgoff+0x2cf/0x3b0 mm/mmap.c:1470 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 call_rcu+0x149/0x830 kernel/rcu/tree.c:2845 mas_wr_node_store lib/maple_tree.c:4230 [inline] mas_wr_modify+0x457b/0x5fb0 lib/maple_tree.c:4429 mas_store_prealloc+0x24e/0x3b0 lib/maple_tree.c:5797 __vma_adjust+0xc22/0x12b0 mm/mmap.c:796 __split_vma+0x31f/0x440 do_mas_align_munmap+0xd25/0x11a0 mm/mmap.c:2489 do_mas_munmap+0x195/0x1f0 mm/mmap.c:2638 __mmap_region mm/mmap.c:2686 [inline] mmap_region+0x77f/0x1bb0 mm/mmap.c:2904 do_mmap+0x69e/0xb60 mm/mmap.c:1424 vm_mmap_pgoff+0x1b7/0x280 mm/util.c:520 ksys_mmap_pgoff+0x2cf/0x3b0 mm/mmap.c:1470 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff88811bbea000 which belongs to the cache maple_node of size 256 The buggy address is located 163 bytes to the right of 256-byte region [ffff88811bbea000, ffff88811bbea100) The buggy address belongs to the physical page: page:ffffea00046efa80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11bbea head:ffffea00046efa80 order:1 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881000c5000 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 794, tgid 794 (modprobe), ts 40605037080, free_ts 40276305397 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x286/0x2b0 mm/page_alloc.c:2532 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x373f/0x39c0 mm/page_alloc.c:4328 __alloc_pages+0x251/0x640 mm/page_alloc.c:5605 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x70/0x250 mm/slub.c:1992 ___slab_alloc+0x9df/0xe70 mm/slub.c:3180 kmem_cache_alloc_bulk+0x15c/0x360 mm/slub.c:3830 mt_alloc_bulk lib/maple_tree.c:157 [inline] mas_alloc_nodes+0x359/0x680 lib/maple_tree.c:1299 mas_node_count_gfp lib/maple_tree.c:1359 [inline] mas_preallocate+0xee/0x290 lib/maple_tree.c:5815 __vma_adjust+0x31c/0x12b0 mm/mmap.c:723 __split_vma+0x31f/0x440 do_mas_align_munmap+0xd25/0x11a0 mm/mmap.c:2489 do_mas_munmap+0x195/0x1f0 mm/mmap.c:2638 __mmap_region mm/mmap.c:2686 [inline] mmap_region+0x77f/0x1bb0 mm/mmap.c:2904 do_mmap+0x69e/0xb60 mm/mmap.c:1424 vm_mmap_pgoff+0x1b7/0x280 mm/util.c:520 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1459 [inline] free_pcp_prepare mm/page_alloc.c:1509 [inline] free_unref_page_prepare+0x103d/0x1280 mm/page_alloc.c:3384 free_unref_page_list+0xaa/0x690 mm/page_alloc.c:3525 release_pages+0x18bc/0x1a50 mm/swap.c:1035 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu+0x26f/0x3d0 mm/mmu_gather.c:261 tlb_finish_mmu+0xb0/0x1b0 mm/mmu_gather.c:361 exit_mmap+0x311/0x6d0 mm/mmap.c:3250 __mmput+0x61/0x290 kernel/fork.c:1200 exit_mm+0x122/0x1b0 kernel/exit.c:565 do_exit+0x819/0x23a0 kernel/exit.c:858 do_group_exit+0x1b5/0x280 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1030 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Memory state around the buggy address: ffff88811bbea080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811bbea100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88811bbea180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88811bbea200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811bbea280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================