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[PATCH 5.4 000/255] 5.4.220-rc1 review | 276 (276) | 2022/11/01 17:29 |
[PATCH 4.19 000/229] 4.19.262-rc1 review | 242 (242) | 2022/11/01 13:44 |
[PATCH 4.9 000/159] 4.9.331-rc1 review | 165 (165) | 2022/10/25 17:41 |
[PATCH 4.14 000/210] 4.14.296-rc1 review | 213 (213) | 2022/10/25 17:38 |
[syzbot] BUG: unable to handle kernel NULL pointer dereference in filemap_free_folio | 2 (3) | 2022/10/25 06:59 |
[PATCH 5.10 00/54] 5.10.148-rc1 review | 64 (64) | 2022/10/17 01:33 |
[PATCH 6.0 00/34] 6.0.2-rc1 review | 49 (49) | 2022/10/15 01:33 |
[PATCH 5.19 00/33] 5.19.16-rc1 review | 44 (44) | 2022/10/14 23:08 |
[PATCH 5.15 00/27] 5.15.74-rc1 review | 31 (31) | 2022/10/14 16:33 |
[PATCH] nilfs2: fix use-after-free bug of struct nilfs_root | 1 (1) | 2022/10/03 15:05 |
Re: [syzbot] KASAN: use-after-free Read in nilfs_segctor_confirm | 2 (2) | 2022/10/02 15:52 |
[syzbot] KASAN: use-after-free Read in nilfs_segctor_confirm | 0 (1) | 2022/10/01 13:48 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
linux-4.19 | KASAN: use-after-free Read in nilfs_segctor_confirm nilfs2 | C | error | 9 | 618d | 696d | 0/1 | upstream: reported C repro on 2022/11/18 14:16 | |
linux-4.14 | KASAN: use-after-free Read in nilfs_segctor_confirm nilfs2 | C | 4 | 609d | 694d | 0/1 | upstream: reported C repro on 2022/11/20 06:43 |
loop0: detected capacity change from 0 to 2048 ================================================================== BUG: KASAN: use-after-free in nilfs_segctor_confirm+0x175/0x190 fs/nilfs2/segment.c:837 Read of size 8 at addr ffff88801d5c9830 by task syz-executor489/3605 CPU: 0 PID: 3605 Comm: syz-executor489 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x2ba/0x719 mm/kasan/report.c:433 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495 nilfs_segctor_confirm+0x175/0x190 fs/nilfs2/segment.c:837 nilfs_segctor_destroy fs/nilfs2/segment.c:2729 [inline] nilfs_detach_log_writer+0x856/0x9f0 fs/nilfs2/segment.c:2810 nilfs_put_super+0x3f/0x1a0 fs/nilfs2/super.c:468 generic_shutdown_super+0x154/0x410 fs/super.c:491 kill_block_super+0x97/0xf0 fs/super.c:1427 deactivate_locked_super+0x94/0x160 fs/super.c:331 deactivate_super+0xad/0xd0 fs/super.c:362 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xb2f/0x2a20 kernel/exit.c:813 do_group_exit+0xd0/0x2a0 kernel/exit.c:943 __do_sys_exit_group kernel/exit.c:954 [inline] __se_sys_exit_group kernel/exit.c:952 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:952 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fedf6ebeb69 Code: Unable to access opcode bytes at 0x7fedf6ebeb3f. RSP: 002b:00007ffe9c323778 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fedf6f36330 RCX: 00007fedf6ebeb69 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007fedf6f30e40 R10: 00007ffe9c323690 R11: 0000000000000246 R12: 00007fedf6f36330 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 </TASK> Allocated by task 3605: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] ____kasan_kmalloc mm/kasan/common.c:516 [inline] ____kasan_kmalloc mm/kasan/common.c:475 [inline] __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:525 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:733 [inline] nilfs_find_or_create_root+0x84/0x4d0 fs/nilfs2/the_nilfs.c:747 nilfs_attach_checkpoint+0xc1/0x4b0 fs/nilfs2/super.c:519 nilfs_fill_super fs/nilfs2/super.c:1064 [inline] nilfs_mount+0xb12/0xfb0 fs/nilfs2/super.c:1317 legacy_get_tree+0x105/0x220 fs/fs_context.c:610 vfs_get_tree+0x89/0x2f0 fs/super.c:1530 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1326/0x1e20 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 3605: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:45 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:367 [inline] ____kasan_slab_free+0x166/0x1c0 mm/kasan/common.c:329 kasan_slab_free include/linux/kasan.h:200 [inline] slab_free_hook mm/slub.c:1759 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1785 slab_free mm/slub.c:3539 [inline] kfree+0xe2/0x580 mm/slub.c:4567 nilfs_put_root+0xb1/0xd0 fs/nilfs2/the_nilfs.c:804 nilfs_clear_inode+0x29a/0x330 fs/nilfs2/inode.c:895 nilfs_evict_inode+0x318/0x440 fs/nilfs2/inode.c:908 evict+0x2ed/0x6b0 fs/inode.c:664 dispose_list+0x117/0x1e0 fs/inode.c:697 evict_inodes+0x352/0x450 fs/inode.c:747 generic_shutdown_super+0xab/0x410 fs/super.c:479 kill_block_super+0x97/0xf0 fs/super.c:1427 deactivate_locked_super+0x94/0x160 fs/super.c:331 deactivate_super+0xad/0xd0 fs/super.c:362 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1186 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xb2f/0x2a20 kernel/exit.c:813 do_group_exit+0xd0/0x2a0 kernel/exit.c:943 __do_sys_exit_group kernel/exit.c:954 [inline] __se_sys_exit_group kernel/exit.c:952 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:952 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88801d5c9800 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 48 bytes inside of 256-byte region [ffff88801d5c9800, ffff88801d5c9900) The buggy address belongs to the physical page: page:ffffea0000757200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d5c8 head:ffffea0000757200 order:1 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea000080e880 dead000000000003 ffff888011841b40 raw: 0000000000000000 0000000080100010 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 12, tgid 12 (kworker/u4:1), ts 6626692195, free_ts 0 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x109b/0x2ce0 mm/page_alloc.c:4283 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5549 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:1829 [inline] allocate_slab+0x27e/0x3d0 mm/slub.c:1974 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x84f/0xe80 mm/slub.c:3036 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3123 slab_alloc_node mm/slub.c:3214 [inline] slab_alloc mm/slub.c:3256 [inline] kmem_cache_alloc_trace+0x323/0x3e0 mm/slub.c:3287 kmalloc include/linux/slab.h:600 [inline] scsi_probe_and_add_lun+0x3ae/0x3650 drivers/scsi/scsi_scan.c:1187 __scsi_scan_target+0x21f/0xdb0 drivers/scsi/scsi_scan.c:1665 scsi_scan_channel drivers/scsi/scsi_scan.c:1753 [inline] scsi_scan_channel+0x148/0x1e0 drivers/scsi/scsi_scan.c:1729 scsi_scan_host_selected+0x2df/0x3b0 drivers/scsi/scsi_scan.c:1782 do_scsi_scan_host+0x1e8/0x260 drivers/scsi/scsi_scan.c:1921 do_scan_async+0x3e/0x500 drivers/scsi/scsi_scan.c:1931 async_run_entry_fn+0x98/0x530 kernel/async.c:127 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 page_owner free stack trace missing Memory state around the buggy address: ffff88801d5c9700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88801d5c9780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88801d5c9800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88801d5c9880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801d5c9900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/10/15 20:37 | upstream | 55be6084c8e0 | 67cb024c | .config | strace log | report | syz | C | [disk image] [vmlinux] [mounted in repro] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | |
2022/10/09 19:29 | upstream | a6afa4199d3d | aea5da89 | .config | strace log | report | syz | C | [disk image] [vmlinux] [mounted in repro] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | |
2022/10/06 16:51 | upstream | 833477fce7a1 | 131b38ac | .config | strace log | report | syz | C | [disk image] [vmlinux] [mounted in repro] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | |
2022/10/06 16:34 | upstream | 833477fce7a1 | 131b38ac | .config | strace log | report | syz | C | [disk image] [vmlinux] [mounted in repro] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | |
2022/10/06 16:13 | upstream | 833477fce7a1 | 131b38ac | .config | strace log | report | syz | C | [disk image] [vmlinux] [mounted in repro] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | |
2022/09/30 22:32 | linux-next | aaa11ce2ffc8 | feb56351 | .config | strace log | report | syz | C | [disk image] [vmlinux] | ci-upstream-linux-next-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | |
2022/10/19 20:49 | upstream | 55be6084c8e0 | b31320fc | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-kasan-gce-selinux-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/16 17:52 | upstream | 55be6084c8e0 | 67cb024c | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/15 12:11 | upstream | 55be6084c8e0 | 67cb024c | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/14 19:11 | upstream | 55be6084c8e0 | 4954e4b2 | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | KASAN: use-after-free Read in nilfs_segctor_confirm | |||
2022/10/10 15:53 | upstream | 4899a36f91a9 | aea5da89 | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/08 22:35 | upstream | e8bc52cb8df8 | aea5da89 | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/05 08:14 | upstream | a5088ee7251e | eab8f949 | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-kasan-gce-selinux-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/15 19:54 | linux-next | aaa11ce2ffc8 | 67cb024c | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-linux-next-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/11 10:14 | linux-next | aaa11ce2ffc8 | 2b253ced | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-linux-next-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/09 03:34 | linux-next | aaa11ce2ffc8 | aea5da89 | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-linux-next-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/03 22:07 | linux-next | aaa11ce2ffc8 | feb56351 | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-linux-next-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/10/02 23:19 | linux-next | aaa11ce2ffc8 | feb56351 | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-linux-next-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm | ||
2022/09/30 21:58 | linux-next | aaa11ce2ffc8 | feb56351 | .config | console log | report | info | [disk image] [vmlinux] | ci-upstream-linux-next-kasan-gce-root | KASAN: use-after-free Read in nilfs_segctor_confirm |