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BUG: KASAN: double-free in diUnmount+0xf3/0x100 fs/jfs/jfs_imap.c:195
Free of addr ffff88801fd00000 by task syz-executor.5/5130

CPU: 1 PID: 5130 Comm: syz-executor.5 Not tainted 6.3.0-rc7-syzkaller-00152-g2af3e53a4dc0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
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
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f79a868d5d7
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 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:00007ffda69a0288 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f79a868d5d7
RDX: 00007ffda69a0359 RSI: 000000000000000a RDI: 00007ffda69a0350
RBP: 00007ffda69a0350 R08: 00000000ffffffff R09: 00007ffda69a0120
R10: 0000555556147903 R11: 0000000000000246 R12: 00007f79a86e6cdc
R13: 00007ffda69a1410 R14: 0000555556147810 R15: 00007ffda69a1450
 </TASK>

Allocated by task 6750:
 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:1278 [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 6750:
 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 ffff88801fd00000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 0 bytes inside of
 4096-byte region [ffff88801fd00000, ffff88801fd01000)

The buggy address belongs to the physical page:
page:ffffea00007f4000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1fd00
head:ffffea00007f4000 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 0x1d2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 6750, tgid 6750 (kworker/1:16), ts 568293593996, free_ts 568285533483
 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:1278 [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
 diMount+0x657/0x870 fs/jfs/jfs_imap.c:115
 jfs_mount_rw+0x2da/0x6a0 fs/jfs/jfs_mount.c:240
 jfs_remount+0x3d1/0x6b0 fs/jfs/super.c:454
 reconfigure_super+0x3c9/0x7c0 fs/super.c:956
 vfs_fsconfig_locked fs/fsopen.c:254 [inline]
 __do_sys_fsconfig fs/fsopen.c:439 [inline]
 __se_sys_fsconfig+0xa29/0xf70 fs/fsopen.c:314
 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:
 ffff88801fcfff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88801fcfff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88801fd00000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88801fd00080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801fd00100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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