EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. loop0: detected capacity change from 2048 to 2045 ================================================================== BUG: KASAN: slab-out-of-bounds in ext4_read_inline_data+0x1d0/0x2c0 fs/ext4/inline.c:214 Read of size 68 at addr ffff8880112aa810 by task syz.0.17/5528 CPU: 0 UID: 0 PID: 5528 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:200 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 ext4_read_inline_data+0x1d0/0x2c0 fs/ext4/inline.c:214 ext4_read_inline_dir+0x2b3/0xb80 fs/ext4/inline.c:1405 ext4_readdir+0x3e8/0x3e90 fs/ext4/dir.c:162 iterate_dir+0x399/0x570 fs/readdir.c:108 __do_sys_getdents64 fs/readdir.c:410 [inline] __se_sys_getdents64+0xe4/0x260 fs/readdir.c:396 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9ec198f7c9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd3131e748 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007f9ec1be5fa0 RCX: 00007f9ec198f7c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007f9ec1a13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9ec1be5fa0 R14: 00007f9ec1be5fa0 R15: 0000000000000003 Allocated by task 1095: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 unpoison_slab_object mm/kasan/common.c:340 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x37d/0x710 mm/slub.c:5270 mempool_alloc_noprof+0x1c9/0x2f0 mm/mempool.c:567 __sg_alloc_table+0x1bc/0x700 lib/scatterlist.c:299 sg_alloc_table_chained+0x85/0x1e0 lib/sg_pool.c:133 scsi_alloc_sgtables+0x291/0xc40 drivers/scsi/scsi_lib.c:1144 sd_setup_read_write_cmnd drivers/scsi/sd.c:1366 [inline] sd_init_command+0x558/0x2000 drivers/scsi/sd.c:1488 scsi_prepare_cmd drivers/scsi/scsi_lib.c:1720 [inline] scsi_queue_rq+0x1264/0x30d0 drivers/scsi/scsi_lib.c:1868 blk_mq_dispatch_rq_list+0x4c0/0x1900 block/blk-mq.c:2138 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xdac/0x1570 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x404/0x4f0 block/blk-mq.c:2376 blk_mq_dispatch_list+0xd0b/0xe00 include/linux/spinlock.h:-1 blk_mq_flush_plug_list+0x469/0x550 block/blk-mq.c:2987 blk_add_rq_to_plug+0x175/0x450 block/blk-mq.c:1408 blk_mq_submit_bio+0xd5b/0x26b0 block/blk-mq.c:3233 __submit_bio+0x207/0x5a0 block/blk-core.c:637 __submit_bio_noacct_mq block/blk-core.c:724 [inline] submit_bio_noacct_nocheck+0x377/0xa30 block/blk-core.c:755 ext4_io_submit fs/ext4/page-io.c:404 [inline] io_submit_add_bh fs/ext4/page-io.c:445 [inline] ext4_bio_write_folio+0x1087/0x1f20 fs/ext4/page-io.c:589 mpage_map_and_submit_buffers fs/ext4/inode.c:2330 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2520 [inline] ext4_do_writepages+0x1fe9/0x4500 fs/ext4/inode.c:2932 ext4_writepages+0x203/0x350 fs/ext4/inode.c:3026 do_writepages+0x32e/0x550 mm/page-writeback.c:2598 __writeback_single_inode+0x133/0x1240 fs/fs-writeback.c:1737 writeback_sb_inodes+0x93a/0x1870 fs/fs-writeback.c:2030 __writeback_inodes_wb+0x111/0x240 fs/fs-writeback.c:2107 wb_writeback+0x43f/0xaa0 fs/fs-writeback.c:2218 wb_check_background_flush fs/fs-writeback.c:2288 [inline] wb_do_writeback fs/fs-writeback.c:2376 [inline] wb_workfn+0xb46/0xed0 fs/fs-writeback.c:2403 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 Freed by task 1095: kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:78 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6670 [inline] kmem_cache_free+0x197/0x620 mm/slub.c:6781 mempool_free+0xec/0x130 mm/mempool.c:712 __sg_free_table+0x191/0x200 lib/scatterlist.c:207 scsi_free_sgtables drivers/scsi/scsi_lib.c:587 [inline] scsi_mq_uninit_cmd drivers/scsi/scsi_lib.c:597 [inline] scsi_end_request+0x1f0/0x820 drivers/scsi/scsi_lib.c:663 scsi_io_completion+0x131/0x360 drivers/scsi/scsi_lib.c:1079 ata_qc_complete_multiple+0x1ae/0x280 drivers/ata/libata-sata.c:789 ahci_qc_complete drivers/ata/libahci.c:1887 [inline] ahci_handle_port_interrupt+0x3d5/0x610 drivers/ata/libahci.c:1954 ahci_port_intr drivers/ata/libahci.c:1965 [inline] ahci_handle_port_intr+0x19f/0x2e0 drivers/ata/libahci.c:1996 ahci_single_level_irq_intr+0x9b/0xe0 drivers/ata/libahci.c:2030 __handle_irq_event_percpu+0x217/0x970 kernel/irq/handle.c:211 handle_irq_event_percpu kernel/irq/handle.c:248 [inline] handle_irq_event+0x8b/0x1e0 kernel/irq/handle.c:265 handle_edge_irq+0x23b/0xa10 kernel/irq/chip.c:855 generic_handle_irq_desc include/linux/irqdesc.h:172 [inline] handle_irq arch/x86/kernel/irq.c:255 [inline] call_irq_handler arch/x86/kernel/irq.c:-1 [inline] __common_interrupt+0x141/0x1f0 arch/x86/kernel/irq.c:326 common_interrupt+0xb6/0xe0 arch/x86/kernel/irq.c:319 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:688 The buggy address belongs to the object at ffff8880112aa400 which belongs to the cache sgpool-32 of size 1024 The buggy address is located 16 bytes to the right of allocated 1024-byte region [ffff8880112aa400, ffff8880112aa800) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880112a8d80 pfn:0x112a8 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000240 ffff88801e92a640 ffffea000002a910 ffffea0000445810 raw: ffff8880112a8d80 00000000000e0000 00000000f5000000 0000000000000000 head: 00fff00000000240 ffff88801e92a640 ffffea000002a910 ffffea0000445810 head: ffff8880112a8d80 00000000000e0000 00000000f5000000 0000000000000000 head: 00fff00000000002 ffffea000044aa01 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4704, tgid 4704 (ext4lazyinit), ts 32074737175, free_ts 32048211831 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x234/0x290 mm/page_alloc.c:1857 prep_new_page mm/page_alloc.c:1865 [inline] get_page_from_freelist+0x24e0/0x2580 mm/page_alloc.c:3915 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5210 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2486 alloc_slab_page mm/slub.c:3075 [inline] allocate_slab+0x86/0x3b0 mm/slub.c:3248 new_slab mm/slub.c:3302 [inline] ___slab_alloc+0xe53/0x1820 mm/slub.c:4656 __slab_alloc+0x65/0x100 mm/slub.c:4779 __slab_alloc_node mm/slub.c:4855 [inline] slab_alloc_node mm/slub.c:5251 [inline] kmem_cache_alloc_noprof+0x40f/0x710 mm/slub.c:5270 mempool_alloc_noprof+0x1c9/0x2f0 mm/mempool.c:567 __sg_alloc_table+0x1bc/0x700 lib/scatterlist.c:299 sg_alloc_table_chained+0x85/0x1e0 lib/sg_pool.c:133 scsi_alloc_sgtables+0x291/0xc40 drivers/scsi/scsi_lib.c:1144 sd_setup_read_write_cmnd drivers/scsi/sd.c:1366 [inline] sd_init_command+0x558/0x2000 drivers/scsi/sd.c:1488 scsi_prepare_cmd drivers/scsi/scsi_lib.c:1720 [inline] scsi_queue_rq+0x1264/0x30d0 drivers/scsi/scsi_lib.c:1868 blk_mq_dispatch_rq_list+0x4c0/0x1900 block/blk-mq.c:2138 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xdac/0x1570 block/blk-mq-sched.c:307 page last free pid 4739 tgid 4739 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1406 [inline] __free_frozen_pages+0xbc8/0xd30 mm/page_alloc.c:2943 __slab_free+0x2ce/0x320 mm/slub.c:6004 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4953 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_noprof+0x37d/0x710 mm/slub.c:5270 getname_flags+0xb8/0x540 fs/namei.c:146 do_readlinkat+0xbc/0x500 fs/stat.c:575 __do_sys_readlink fs/stat.c:613 [inline] __se_sys_readlink fs/stat.c:610 [inline] __x64_sys_readlink+0x7f/0x90 fs/stat.c:610 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff8880112aa700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880112aa780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880112aa800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880112aa880: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880112aa900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================