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| Title | Replies (including bot) | Last reply |
|---|---|---|
| [PATCH v2] f2fs: fix to avoid use-after-free in f2fs_stop_gc_thread() | 2 (2) | 2024/08/30 20:52 |
| [syzbot] Monthly f2fs report (Aug 2024) | 0 (1) | 2024/08/16 19:58 |
| [PATCH] f2fs: fix to avoid use-after-free in f2fs_stop_gc_thread() | 4 (4) | 2024/07/29 01:11 |
| [PATCH] f2fs: Add mutex to prevent gc task from being accessed before initialization | 1 (1) | 2024/07/27 05:56 |
| [syzbot] [f2fs?] KASAN: null-ptr-deref Write in f2fs_stop_gc_thread | 4 (17) | 2024/07/27 05:13 |
F2FS-fs (loop4): Mounted with checkpoint version = 48b305e5 F2FS-fs (loop4): Stopped filesystem due to reason: 0 ================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: null-ptr-deref in atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:252 [inline] BUG: KASAN: null-ptr-deref in __refcount_add include/linux/refcount.h:184 [inline] BUG: KASAN: null-ptr-deref in __refcount_inc include/linux/refcount.h:241 [inline] BUG: KASAN: null-ptr-deref in refcount_inc include/linux/refcount.h:258 [inline] BUG: KASAN: null-ptr-deref in get_task_struct include/linux/sched/task.h:118 [inline] BUG: KASAN: null-ptr-deref in kthread_stop+0xca/0x630 kernel/kthread.c:704 Write of size 4 at addr 0000000000000028 by task syz-executor169/7772 CPU: 1 PID: 7772 Comm: syz-executor169 Not tainted 6.10.0-syzkaller-11185-g2c9b3512402e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_report+0xe8/0x550 mm/kasan/report.c:491 kasan_report+0x143/0x180 mm/kasan/report.c:601 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:252 [inline] __refcount_add include/linux/refcount.h:184 [inline] __refcount_inc include/linux/refcount.h:241 [inline] refcount_inc include/linux/refcount.h:258 [inline] get_task_struct include/linux/sched/task.h:118 [inline] kthread_stop+0xca/0x630 kernel/kthread.c:704 f2fs_stop_gc_thread+0x65/0xb0 fs/f2fs/gc.c:210 f2fs_do_shutdown+0x192/0x540 fs/f2fs/file.c:2283 f2fs_ioc_shutdown fs/f2fs/file.c:2325 [inline] __f2fs_ioctl+0x443a/0xbe60 fs/f2fs/file.c:4325 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fac5a221249 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 1d 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fac5a1ce218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fac5a2a8708 RCX: 00007fac5a221249 RDX: 0000000020000140 RSI: 000000008004587d RDI: 0000000000000005 RBP: 00007fac5a2a8700 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fac5a274b1c R13: 00007fac5a274040 R14: 00007fac5a26e057 R15: 8c02ea27aa268e19 </TASK> ==================================================================