loop0: detected capacity change from 0 to 14901 read_mapping_page failed! jfs_mount: diMount failed w/rc = -5 ================================================================== BUG: KASAN: slab-use-after-free in diFree+0x1fbb/0x2fb0 fs/jfs/jfs_imap.c:871 Read of size 4 at addr ffff88803aad0004 by task syz-executor.0/16073 CPU: 0 PID: 16073 Comm: syz-executor.0 Not tainted 6.4.0-syzkaller-09904-ga507db1d8fdc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x163/0x540 mm/kasan/report.c:475 kasan_report+0x175/0x1b0 mm/kasan/report.c:588 diFree+0x1fbb/0x2fb0 fs/jfs/jfs_imap.c:871 jfs_evict_inode+0x32d/0x440 fs/jfs/inode.c:156 evict+0x2a4/0x620 fs/inode.c:665 jfs_mount+0x536/0x830 fs/jfs/jfs_mount.c:203 jfs_fill_super+0x59c/0xc50 fs/jfs/super.c:556 mount_bdev+0x276/0x3b0 fs/super.c:1391 legacy_get_tree+0xef/0x190 fs/fs_context.c:611 vfs_get_tree+0x8c/0x270 fs/super.c:1519 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f3a6508d8ba Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3a65e00f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000002358 RCX: 00007f3a6508d8ba RDX: 0000000020005d00 RSI: 0000000020000000 RDI: 00007f3a65e00fe0 RBP: 00007f3a65e01020 R08: 00007f3a65e01020 R09: 0000000000000010 R10: 0000000000000010 R11: 0000000000000202 R12: 0000000020005d00 R13: 0000000020000000 R14: 00007f3a65e00fe0 R15: 0000000020000040 Allocated by task 19875: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:985 [inline] __kmalloc_node_track_caller+0xb6/0x230 mm/slab_common.c:1005 kmalloc_reserve+0xfe/0x240 net/core/skbuff.c:575 __alloc_skb+0x1b1/0x420 net/core/skbuff.c:644 alloc_skb include/linux/skbuff.h:1289 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:751 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline] nsim_dev_trap_report_work+0x250/0xa90 drivers/net/netdevsim/dev.c:853 process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597 worker_thread+0xa63/0x1210 kernel/workqueue.c:2748 kthread+0x2b8/0x350 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Freed by task 19875: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:521 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1792 [inline] slab_free_freelist_hook mm/slub.c:1818 [inline] slab_free mm/slub.c:3801 [inline] __kmem_cache_free+0x25f/0x3b0 mm/slub.c:3814 skb_kfree_head net/core/skbuff.c:894 [inline] skb_free_head net/core/skbuff.c:906 [inline] skb_release_data+0x660/0x850 net/core/skbuff.c:936 skb_release_all net/core/skbuff.c:1002 [inline] __kfree_skb net/core/skbuff.c:1016 [inline] consume_skb+0xb3/0x150 net/core/skbuff.c:1232 nsim_dev_trap_report drivers/net/netdevsim/dev.c:824 [inline] nsim_dev_trap_report_work+0x761/0xa90 drivers/net/netdevsim/dev.c:853 process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597 worker_thread+0xa63/0x1210 kernel/workqueue.c:2748 kthread+0x2b8/0x350 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 The buggy address belongs to the object at ffff88803aad0000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 4 bytes inside of freed 4096-byte region [ffff88803aad0000, ffff88803aad1000) The buggy address belongs to the physical page: page:ffffea0000eab400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3aad0 head:ffffea0000eab400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff888012842140 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 19875, tgid 19875 (kworker/1:23), ts 2175797982032, free_ts 2175765525650 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x31e8/0x3370 mm/page_alloc.c:3221 __alloc_pages+0x255/0x670 mm/page_alloc.c:4477 alloc_slab_page+0x6a/0x160 mm/slub.c:1862 allocate_slab mm/slub.c:2009 [inline] new_slab+0x84/0x2f0 mm/slub.c:2062 ___slab_alloc+0xade/0x1100 mm/slub.c:3215 __slab_alloc mm/slub.c:3314 [inline] __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] __kmem_cache_alloc_node+0x1af/0x270 mm/slub.c:3509 __do_kmalloc_node mm/slab_common.c:984 [inline] __kmalloc_node_track_caller+0xa5/0x230 mm/slab_common.c:1005 kmalloc_reserve+0xfe/0x240 net/core/skbuff.c:575 __alloc_skb+0x1b1/0x420 net/core/skbuff.c:644 alloc_skb include/linux/skbuff.h:1289 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:751 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline] nsim_dev_trap_report_work+0x250/0xa90 drivers/net/netdevsim/dev.c:853 process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597 worker_thread+0xa63/0x1210 kernel/workqueue.c:2748 kthread+0x2b8/0x350 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1161 [inline] free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2348 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2443 discard_slab mm/slub.c:2108 [inline] __unfreeze_partials+0x1dc/0x220 mm/slub.c:2647 put_cpu_partial+0x116/0x180 mm/slub.c:2723 __slab_free+0x2b6/0x390 mm/slub.c:3671 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:750 slab_alloc_node mm/slub.c:3470 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc+0x123/0x300 mm/slub.c:3494 getname_flags+0xbc/0x4e0 fs/namei.c:140 vfs_fstatat fs/stat.c:275 [inline] __do_sys_newfstatat fs/stat.c:446 [inline] __se_sys_newfstatat fs/stat.c:440 [inline] __x64_sys_newfstatat+0x12e/0x1d0 fs/stat.c:440 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88803aacff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88803aacff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88803aad0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88803aad0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803aad0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================