syzbot

RBP: 00007ffd81f4a7c0 R08: 0000000000000000 R09: 00007ffd81f4a740
R10: 0000000000800020 R11: 0000000000000246 R12: 0000000000000004
R13: 00007ffd81f4a7f0 R14: 00007f3612329423 R15: 00007ffd81f4a7d0
 </TASK>
jfs_mount_rw: diMount failed!
==================================================================
BUG: KASAN: double-free in diUnmount+0xf3/0x100 fs/jfs/jfs_imap.c:195
Free of addr ffff88802b888000 by task syz-executor248/5076

CPU: 0 PID: 5076 Comm: syz-executor248 Not tainted 6.3.0-rc3-syzkaller-00394-g0ec57cfa721f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __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:319 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:430
 kasan_report_invalid_free+0xeb/0x100 mm/kasan/report.c:501
 ____kasan_slab_free+0xfb/0x120
 kasan_slab_free include/linux/kasan.h:162 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook mm/slub.c:1807 [inline]
 slab_free mm/slub.c:3787 [inline]
 __kmem_cache_free+0x264/0x3c0 mm/slub.c:3800
 diUnmount+0xf3/0x100 fs/jfs/jfs_imap.c:195
 jfs_umount+0x186/0x3a0 fs/jfs/jfs_umount.c:63
 jfs_put_super+0x8a/0x190 fs/jfs/super.c:194
 generic_shutdown_super+0x134/0x340 fs/super.c:500
 kill_block_super+0x7e/0xe0 fs/super.c:1407
 deactivate_locked_super+0xa4/0x110 fs/super.c:331
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x68f/0x2290 kernel/exit.c:869
 do_group_exit+0x206/0x2c0 kernel/exit.c:1019
 __do_sys_exit_group kernel/exit.c:1030 [inline]
 __se_sys_exit_group kernel/exit.c:1028 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1028
 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: 0033:0x7f36122e8c69
Code: Unable to access opcode bytes at 0x7f36122e8c3f.
RSP: 002b:00007ffd81f4a758 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f36123603f0 RCX: 00007f36122e8c69
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007ffd81f4a740
R10: 0000000000800020 R11: 0000000000000246 R12: 00007f36123603f0
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
 </TASK>

Allocated by task 5084:
 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:967 [inline]
 __kmalloc_node_track_caller+0xb6/0x230 mm/slab_common.c:987
 kmalloc_reserve+0xfe/0x240 net/core/skbuff.c:537
 __alloc_skb+0x1b1/0x420 net/core/skbuff.c:606
 alloc_skb include/linux/skbuff.h:1277 [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+0x8a0/0x10e0 kernel/workqueue.c:2390
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
 kthread+0x270/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Freed by task 5084:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/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:1781 [inline]
 slab_free_freelist_hook mm/slub.c:1807 [inline]
 slab_free mm/slub.c:3787 [inline]
 __kmem_cache_free+0x264/0x3c0 mm/slub.c:3800
 skb_kfree_head net/core/skbuff.c:858 [inline]
 skb_free_head net/core/skbuff.c:870 [inline]
 skb_release_data+0x51d/0x810 net/core/skbuff.c:899
 skb_release_all net/core/skbuff.c:964 [inline]
 __kfree_skb net/core/skbuff.c:978 [inline]
 consume_skb+0xb1/0x150 net/core/skbuff.c:1191
 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+0x8a0/0x10e0 kernel/workqueue.c:2390
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
 kthread+0x270/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

The buggy address belongs to the object at ffff88802b888000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 0 bytes inside of
 4096-byte region [ffff88802b888000, ffff88802b889000)

The buggy address belongs to the physical page:
page:ffffea0000ae2200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2b888
head:ffffea0000ae2200 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffff888012442140 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 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5084, tgid 5084 (kworker/1:5), ts 55071326095, free_ts 54791899333
 prep_new_page mm/page_alloc.c:2553 [inline]
 get_page_from_freelist+0x3246/0x33c0 mm/page_alloc.c:4326
 __alloc_pages+0x255/0x670 mm/page_alloc.c:5592
 alloc_slab_page+0x6a/0x160 mm/slub.c:1851
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2051
 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3193
 __slab_alloc mm/slub.c:3292 [inline]
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 __kmem_cache_alloc_node+0x1b8/0x290 mm/slub.c:3491
 __do_kmalloc_node mm/slab_common.c:966 [inline]
 __kmalloc_node_track_caller+0xa5/0x230 mm/slab_common.c:987
 kmalloc_reserve+0xfe/0x240 net/core/skbuff.c:537
 __alloc_skb+0x1b1/0x420 net/core/skbuff.c:606
 alloc_skb include/linux/skbuff.h:1277 [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+0x8a0/0x10e0 kernel/workqueue.c:2390
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
 kthread+0x270/0x300 kernel/kthread.c:376
 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:1454 [inline]
 free_pcp_prepare mm/page_alloc.c:1504 [inline]
 free_unref_page_prepare+0xe2f/0xe70 mm/page_alloc.c:3388
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:3483
 free_large_kmalloc+0xff/0x190 mm/slab_common.c:944
 diUnmount+0xf3/0x100 fs/jfs/jfs_imap.c:195
 jfs_mount_rw+0x2bf/0x6a0 fs/jfs/jfs_mount.c:239
 jfs_remount+0x3d1/0x6b0 fs/jfs/super.c:454
 reconfigure_super+0x3c9/0x7c0 fs/super.c:956
 do_remount fs/namespace.c:2704 [inline]
 path_mount+0xc19/0xf80 fs/namespace.c:3364
 do_mount fs/namespace.c:3385 [inline]
 __do_sys_mount fs/namespace.c:3594 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3571
 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:
 ffff88802b887f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802b887f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802b888000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88802b888080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802b888100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================