==================================================================
BUG: KASAN: slab-use-after-free in lbmLogShutdown fs/jfs/jfs_logmgr.c:1860 [inline]
BUG: KASAN: slab-use-after-free in lmLogInit+0x1454/0x17d0 fs/jfs/jfs_logmgr.c:1413
Read of size 8 at addr ffff888037ef0d18 by task syz.1.221/7278

CPU: 0 UID: 0 PID: 7278 Comm: syz.1.221 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x13d/0x4b0 mm/kasan/report.c:482
 kasan_report+0xdf/0x1d0 mm/kasan/report.c:595
 lbmLogShutdown fs/jfs/jfs_logmgr.c:1860 [inline]
 lmLogInit+0x1454/0x17d0 fs/jfs/jfs_logmgr.c:1413
 open_inline_log fs/jfs/jfs_logmgr.c:1173 [inline]
 lmLogOpen+0x7e3/0x1360 fs/jfs/jfs_logmgr.c:1067
 jfs_mount_rw+0x2e0/0x690 fs/jfs/jfs_mount.c:257
 jfs_reconfigure+0x8c6/0xaf0 fs/jfs/super.c:409
 reconfigure_super+0x52d/0xb30 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0x19fc/0x23d0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount fs/namespace.c:4360 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1b1a39a539
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1b1b227028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1b1a605fa0 RCX: 00007f1b1a39a539
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f1b1a42dee0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000001c0030 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1b1a606038 R14: 00007f1b1a605fa0 R15: 00007ffd5f7b6218
 </TASK>

Allocated by task 7278:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
 kmalloc_noprof include/linux/slab.h:950 [inline]
 lbmLogInit fs/jfs/jfs_logmgr.c:1819 [inline]
 lmLogInit+0x424/0x17d0 fs/jfs/jfs_logmgr.c:1267
 open_inline_log fs/jfs/jfs_logmgr.c:1173 [inline]
 lmLogOpen+0x7e3/0x1360 fs/jfs/jfs_logmgr.c:1067
 jfs_mount_rw+0x2e0/0x690 fs/jfs/jfs_mount.c:257
 jfs_reconfigure+0x8c6/0xaf0 fs/jfs/super.c:409
 reconfigure_super+0x52d/0xb30 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0x19fc/0x23d0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount fs/namespace.c:4360 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 7278:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2689 [inline]
 slab_free mm/slub.c:6246 [inline]
 kfree+0x223/0x6c0 mm/slub.c:6561
 lbmLogShutdown fs/jfs/jfs_logmgr.c:1862 [inline]
 lmLogInit+0xa5b/0x17d0 fs/jfs/jfs_logmgr.c:1413
 open_inline_log fs/jfs/jfs_logmgr.c:1173 [inline]
 lmLogOpen+0x7e3/0x1360 fs/jfs/jfs_logmgr.c:1067
 jfs_mount_rw+0x2e0/0x690 fs/jfs/jfs_mount.c:257
 jfs_reconfigure+0x8c6/0xaf0 fs/jfs/super.c:409
 reconfigure_super+0x52d/0xb30 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0x19fc/0x23d0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount fs/namespace.c:4360 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888037ef0d00
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 24 bytes inside of
 freed 192-byte region [ffff888037ef0d00, ffff888037ef0dc0)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x37ef0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff88813fe883c0 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 20577641270, free_ts 20504386248
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x153/0x170 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x11a6/0x33b0 mm/page_alloc.c:3938
 __alloc_frozen_pages_noprof+0x27c/0x2bc0 mm/page_alloc.c:5218
 alloc_slab_page mm/slub.c:3278 [inline]
 allocate_slab mm/slub.c:3467 [inline]
 new_slab+0xa6/0x6c0 mm/slub.c:3525
 refill_objects+0x277/0x420 mm/slub.c:7251
 refill_sheaf mm/slub.c:2816 [inline]
 __pcs_replace_empty_main+0x375/0x650 mm/slub.c:4651
 alloc_from_pcs mm/slub.c:4749 [inline]
 slab_alloc_node mm/slub.c:4883 [inline]
 __kmalloc_cache_noprof+0x493/0x6f0 mm/slub.c:5410
 kmalloc_noprof include/linux/slab.h:950 [inline]
 kzalloc_noprof include/linux/slab.h:1188 [inline]
 call_usermodehelper_setup+0xaf/0x360 kernel/umh.c:362
 kobject_uevent_env+0x17c1/0x18b0 lib/kobject_uevent.c:631
 kernel_add_sysfs_param kernel/params.c:801 [inline]
 param_sysfs_builtin kernel/params.c:836 [inline]
 param_sysfs_builtin_init+0x37b/0x3f0 kernel/params.c:972
 do_one_initcall+0x121/0x750 init/main.c:1392
 do_initcall_level init/main.c:1454 [inline]
 do_initcalls init/main.c:1470 [inline]
 do_basic_setup init/main.c:1490 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1703
 kernel_init+0x1f/0x1e0 init/main.c:1593
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
page last free pid 799 tgid 799 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0x747/0x1040 mm/page_alloc.c:2935
 vfree mm/vmalloc.c:3472 [inline]
 vfree+0x15f/0x8d0 mm/vmalloc.c:3436
 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3392
 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3302
 process_scheduled_works kernel/workqueue.c:3385 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3466
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff888037ef0c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888037ef0c80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888037ef0d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff888037ef0d80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888037ef0e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in lbmLogShutdown fs/jfs/jfs_logmgr.c:1861 [inline]
BUG: KASAN: slab-use-after-free in lmLogInit+0x145e/0x17d0 fs/jfs/jfs_logmgr.c:1413
Read of size 8 at addr ffff888037ef0d40 by task syz.1.221/7278

CPU: 1 UID: 0 PID: 7278 Comm: syz.1.221 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x13d/0x4b0 mm/kasan/report.c:482
 kasan_report+0xdf/0x1d0 mm/kasan/report.c:595
 lbmLogShutdown fs/jfs/jfs_logmgr.c:1861 [inline]
 lmLogInit+0x145e/0x17d0 fs/jfs/jfs_logmgr.c:1413
 open_inline_log fs/jfs/jfs_logmgr.c:1173 [inline]
 lmLogOpen+0x7e3/0x1360 fs/jfs/jfs_logmgr.c:1067
 jfs_mount_rw+0x2e0/0x690 fs/jfs/jfs_mount.c:257
 jfs_reconfigure+0x8c6/0xaf0 fs/jfs/super.c:409
 reconfigure_super+0x52d/0xb30 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0x19fc/0x23d0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount fs/namespace.c:4360 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1b1a39a539
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1b1b227028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1b1a605fa0 RCX: 00007f1b1a39a539
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f1b1a42dee0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000001c0030 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1b1a606038 R14: 00007f1b1a605fa0 R15: 00007ffd5f7b6218
 </TASK>

Allocated by task 7278:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
 kmalloc_noprof include/linux/slab.h:950 [inline]
 lbmLogInit fs/jfs/jfs_logmgr.c:1819 [inline]
 lmLogInit+0x424/0x17d0 fs/jfs/jfs_logmgr.c:1267
 open_inline_log fs/jfs/jfs_logmgr.c:1173 [inline]
 lmLogOpen+0x7e3/0x1360 fs/jfs/jfs_logmgr.c:1067
 jfs_mount_rw+0x2e0/0x690 fs/jfs/jfs_mount.c:257
 jfs_reconfigure+0x8c6/0xaf0 fs/jfs/super.c:409
 reconfigure_super+0x52d/0xb30 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0x19fc/0x23d0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount fs/namespace.c:4360 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 7278:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2689 [inline]
 slab_free mm/slub.c:6246 [inline]
 kfree+0x223/0x6c0 mm/slub.c:6561
 lbmLogShutdown fs/jfs/jfs_logmgr.c:1862 [inline]
 lmLogInit+0xa5b/0x17d0 fs/jfs/jfs_logmgr.c:1413
 open_inline_log fs/jfs/jfs_logmgr.c:1173 [inline]
 lmLogOpen+0x7e3/0x1360 fs/jfs/jfs_logmgr.c:1067
 jfs_mount_rw+0x2e0/0x690 fs/jfs/jfs_mount.c:257
 jfs_reconfigure+0x8c6/0xaf0 fs/jfs/super.c:409
 reconfigure_super+0x52d/0xb30 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0x19fc/0x23d0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount fs/namespace.c:4360 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888037ef0d00
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 64 bytes inside of
 freed 192-byte region [ffff888037ef0d00, ffff888037ef0dc0)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x37ef0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff88813fe883c0 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 20577641270, free_ts 20504386248
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x153/0x170 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x11a6/0x33b0 mm/page_alloc.c:3938
 __alloc_frozen_pages_noprof+0x27c/0x2bc0 mm/page_alloc.c:5218
 alloc_slab_page mm/slub.c:3278 [inline]
 allocate_slab mm/slub.c:3467 [inline]
 new_slab+0xa6/0x6c0 mm/slub.c:3525
 refill_objects+0x277/0x420 mm/slub.c:7251
 refill_sheaf mm/slub.c:2816 [inline]
 __pcs_replace_empty_main+0x375/0x650 mm/slub.c:4651
 alloc_from_pcs mm/slub.c:4749 [inline]
 slab_alloc_node mm/slub.c:4883 [inline]
 __kmalloc_cache_noprof+0x493/0x6f0 mm/slub.c:5410
 kmalloc_noprof include/linux/slab.h:950 [inline]
 kzalloc_noprof include/linux/slab.h:1188 [inline]
 call_usermodehelper_setup+0xaf/0x360 kernel/umh.c:362
 kobject_uevent_env+0x17c1/0x18b0 lib/kobject_uevent.c:631
 kernel_add_sysfs_param kernel/params.c:801 [inline]
 param_sysfs_builtin kernel/params.c:836 [inline]
 param_sysfs_builtin_init+0x37b/0x3f0 kernel/params.c:972
 do_one_initcall+0x121/0x750 init/main.c:1392
 do_initcall_level init/main.c:1454 [inline]
 do_initcalls init/main.c:1470 [inline]
 do_basic_setup init/main.c:1490 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1703
 kernel_init+0x1f/0x1e0 init/main.c:1593
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
page last free pid 799 tgid 799 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0x747/0x1040 mm/page_alloc.c:2935
 vfree mm/vmalloc.c:3472 [inline]
 vfree+0x15f/0x8d0 mm/vmalloc.c:3436
 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3392
 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3302
 process_scheduled_works kernel/workqueue.c:3385 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3466
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff888037ef0c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888037ef0c80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888037ef0d00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff888037ef0d80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888037ef0e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x71df4
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff8881404c2780 dead000000000100 dead000000000122
raw: 0000000000000000 00000008000c000c 00000000f5000000 0000000000000000
page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 7278, tgid 7277 (syz.1.221), ts 249542717972, free_ts 248803241188
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x153/0x170 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x11a6/0x33b0 mm/page_alloc.c:3938
 __alloc_frozen_pages_noprof+0x27c/0x2bc0 mm/page_alloc.c:5218
 alloc_slab_page mm/slub.c:3278 [inline]
 allocate_slab mm/slub.c:3467 [inline]
 new_slab+0xa6/0x6c0 mm/slub.c:3525
 refill_objects+0x277/0x420 mm/slub.c:7251
 refill_sheaf mm/slub.c:2816 [inline]
 __pcs_replace_empty_main+0x375/0x650 mm/slub.c:4651
 alloc_from_pcs mm/slub.c:4749 [inline]
 slab_alloc_node mm/slub.c:4883 [inline]
 kmem_cache_alloc_noprof+0x480/0x6e0 mm/slub.c:4905
 skb_clone+0x190/0x400 net/core/skbuff.c:2107
 hsr_create_tagged_frame+0x983/0xf00 net/hsr/hsr_forward.c:344
 hsr_forward_do net/hsr/hsr_forward.c:568 [inline]
 hsr_forward_skb+0x1181/0x28a0 net/hsr/hsr_forward.c:743
 send_hsr_supervision_frame+0x696/0xbc0 net/hsr/hsr_device.c:364
 hsr_announce+0x169/0x3e0 net/hsr/hsr_device.c:421
 call_timer_fn+0x19a/0x640 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x75f/0xaf0 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
page last free pid 7278 tgid 7277 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0x747/0x1040 mm/page_alloc.c:2935
 lbmLogShutdown fs/jfs/jfs_logmgr.c:1861 [inline]
 lmLogInit+0xa53/0x17d0 fs/jfs/jfs_logmgr.c:1413
 open_inline_log fs/jfs/jfs_logmgr.c:1173 [inline]
 lmLogOpen+0x7e3/0x1360 fs/jfs/jfs_logmgr.c:1067
 jfs_mount_rw+0x2e0/0x690 fs/jfs/jfs_mount.c:257
 jfs_reconfigure+0x8c6/0xaf0 fs/jfs/super.c:409
 reconfigure_super+0x52d/0xb30 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0x19fc/0x23d0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount fs/namespace.c:4360 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at ./include/linux/mm.h:1761!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 7278 Comm: syz.1.221 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:put_page_testzero include/linux/mm.h:1761 [inline]
RIP: 0010:___free_pages+0x150/0x180 mm/page_alloc.c:5298
Code: 5d 41 5e e9 82 ee ff ff 48 c7 c6 a0 f9 c0 8b 4c 89 e7 e8 b3 29 f0 ff 90 0f 0b 48 c7 c6 60 10 c1 8b 4c 89 e7 e8 a1 29 f0 ff 90 <0f> 0b 48 89 ef e8 b6 80 0e 00 e9 42 ff ff ff 4c 89 e7 e8 d9 80 0e
RSP: 0018:ffffc900060679c0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888031e20000 RSI: ffffffff8256e418 RDI: ffff888031e204c4
RBP: ffffea0001c77d34 R08: 0000000000000000 R09: fffffbfff21b7d8a
R10: 0000000000000000 R11: 0000000000000001 R12: ffffea0001c77d00
R13: 00fff00000000000 R14: 0000000000000000 R15: ffff888029e66038
FS:  00007f1b1b2276c0(0000) GS:ffff8881243f0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32763fff CR3: 00000000355dc000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 lbmLogShutdown fs/jfs/jfs_logmgr.c:1861 [inline]
 lmLogInit+0xa53/0x17d0 fs/jfs/jfs_logmgr.c:1413
 open_inline_log fs/jfs/jfs_logmgr.c:1173 [inline]
 lmLogOpen+0x7e3/0x1360 fs/jfs/jfs_logmgr.c:1067
 jfs_mount_rw+0x2e0/0x690 fs/jfs/jfs_mount.c:257
 jfs_reconfigure+0x8c6/0xaf0 fs/jfs/super.c:409
 reconfigure_super+0x52d/0xb30 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0x19fc/0x23d0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount fs/namespace.c:4360 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1b1a39a539
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1b1b227028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1b1a605fa0 RCX: 00007f1b1a39a539
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f1b1a42dee0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000001c0030 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1b1a606038 R14: 00007f1b1a605fa0 R15: 00007ffd5f7b6218
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:put_page_testzero include/linux/mm.h:1761 [inline]
RIP: 0010:___free_pages+0x150/0x180 mm/page_alloc.c:5298
Code: 5d 41 5e e9 82 ee ff ff 48 c7 c6 a0 f9 c0 8b 4c 89 e7 e8 b3 29 f0 ff 90 0f 0b 48 c7 c6 60 10 c1 8b 4c 89 e7 e8 a1 29 f0 ff 90 <0f> 0b 48 89 ef e8 b6 80 0e 00 e9 42 ff ff ff 4c 89 e7 e8 d9 80 0e
RSP: 0018:ffffc900060679c0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888031e20000 RSI: ffffffff8256e418 RDI: ffff888031e204c4
RBP: ffffea0001c77d34 R08: 0000000000000000 R09: fffffbfff21b7d8a
R10: 0000000000000000 R11: 0000000000000001 R12: ffffea0001c77d00
R13: 00fff00000000000 R14: 0000000000000000 R15: ffff888029e66038
FS:  00007f1b1b2276c0(0000) GS:ffff8881242f0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc6eff9d14 CR3: 00000000355dc000 CR4: 0000000000350ef0