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================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: null-ptr-deref in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:4456 [inline] BUG: KASAN: null-ptr-deref in rwsem_write_trylock kernel/locking/rwsem.c:284 [inline] BUG: KASAN: null-ptr-deref in __down_write_common kernel/locking/rwsem.c:1370 [inline] BUG: KASAN: null-ptr-deref in __down_write kernel/locking/rwsem.c:1380 [inline] BUG: KASAN: null-ptr-deref in down_write+0x83/0x2a0 kernel/locking/rwsem.c:1647 Write of size 8 at addr 0000000000000098 by task kworker/0:1/10 CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.12.23-syzkaller-g30b14cdad458 #0 c708c6bafa1314b3e84c64b9f03b67766970ebbd Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events _RNvXs6_NtCs43vyB533jt3_6kernel9workqueueINtNtNtB7_4sync3arc3ArcNtNtCshgDM7dBCdno_11rust_binder7process7ProcessEINtB5_15WorkItemPointerKy0_E3runB13_ Call Trace: <TASK> __dump_stack+0x21/0x30 lib/dump_stack.c:94 dump_stack_lvl+0x10c/0x190 lib/dump_stack.c:120 print_report+0x3d/0x70 mm/kasan/report.c:491 kasan_report+0x163/0x1a0 mm/kasan/report.c:601 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x299/0x2a0 mm/kasan/generic.c:189 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:4456 [inline] rwsem_write_trylock kernel/locking/rwsem.c:284 [inline] __down_write_common kernel/locking/rwsem.c:1370 [inline] __down_write kernel/locking/rwsem.c:1380 [inline] down_write+0x83/0x2a0 kernel/locking/rwsem.c:1647 inode_lock include/linux/fs.h:815 [inline] rust_binderfs_remove_file+0x6c/0x110 drivers/android/binder/rust_binderfs.c:505 <rust_binder::BinderfsProcFile as core::ops::drop::Drop>::drop drivers/android/binder/rust_binder.rs:627 [inline] core::ptr::drop_in_place::<rust_binder::BinderfsProcFile> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline] core::ptr::drop_in_place::<core::option::Option<rust_binder::BinderfsProcFile>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline] core::mem::drop::<core::option::Option<rust_binder::BinderfsProcFile>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/mem/mod.rs:935 [inline] <rust_binder::process::Process>::deferred_release drivers/android/binder/process.rs:1286 [inline] <rust_binder::process::Process as kernel::workqueue::WorkItem>::run+0x9d4/0x2860 drivers/android/binder/process.rs:483 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x7d2/0x1020 kernel/workqueue.c:3319 worker_thread+0xc58/0x1250 kernel/workqueue.c:3400 kthread+0x2c7/0x370 kernel/kthread.c:389 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> ================================================================== BUG: kernel NULL pointer dereference, address: 0000000000000098 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 0 P4D 0 Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Tainted: G B 6.12.23-syzkaller-g30b14cdad458 #0 c708c6bafa1314b3e84c64b9f03b67766970ebbd Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events _RNvXs6_NtCs43vyB533jt3_6kernel9workqueueINtNtNtB7_4sync3arc3ArcNtNtCshgDM7dBCdno_11rust_binder7process7ProcessEINtB5_15WorkItemPointerKy0_E3runB13_ RIP: 0010:arch_atomic64_try_cmpxchg arch/x86/include/asm/atomic64_64.h:101 [inline] RIP: 0010:raw_atomic64_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:4296 [inline] RIP: 0010:raw_atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-long.h:1482 [inline] RIP: 0010:atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:4458 [inline] RIP: 0010:rwsem_write_trylock kernel/locking/rwsem.c:284 [inline] RIP: 0010:__down_write_common kernel/locking/rwsem.c:1370 [inline] RIP: 0010:__down_write kernel/locking/rwsem.c:1380 [inline] RIP: 0010:down_write+0x9a/0x2a0 kernel/locking/rwsem.c:1647 Code: 48 c7 44 24 20 00 00 00 00 be 08 00 00 00 e8 9d 40 55 fc 4c 89 f7 be 08 00 00 00 e8 90 40 55 fc 48 8b 44 24 20 b9 01 00 00 00 <f0> 48 0f b1 0b 0f 85 a0 00 00 00 48 c7 c0 c0 b9 20 87 48 c1 e8 03 RSP: 0018:ffffc900000a7500 EFLAGS: 00010256 RAX: 0000000000000000 RBX: 0000000000000098 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900000a7520 RBP: ffffc900000a7598 R08: ffffc900000a7527 R09: 1ffff92000014ea4 R10: dffffc0000000000 R11: fffff52000014ea5 R12: dffffc0000000000 R13: 1ffff92000014ea0 R14: ffffc900000a7520 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000098 CR3: 00000000072aa000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> inode_lock include/linux/fs.h:815 [inline] rust_binderfs_remove_file+0x6c/0x110 drivers/android/binder/rust_binderfs.c:505 <rust_binder::BinderfsProcFile as core::ops::drop::Drop>::drop drivers/android/binder/rust_binder.rs:627 [inline] core::ptr::drop_in_place::<rust_binder::BinderfsProcFile> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline] core::ptr::drop_in_place::<core::option::Option<rust_binder::BinderfsProcFile>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:523 [inline] core::mem::drop::<core::option::Option<rust_binder::BinderfsProcFile>> usr/local/rustup/toolchains/1.87.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/mem/mod.rs:935 [inline] <rust_binder::process::Process>::deferred_release drivers/android/binder/process.rs:1286 [inline] <rust_binder::process::Process as kernel::workqueue::WorkItem>::run+0x9d4/0x2860 drivers/android/binder/process.rs:483 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0x7d2/0x1020 kernel/workqueue.c:3319 worker_thread+0xc58/0x1250 kernel/workqueue.c:3400 kthread+0x2c7/0x370 kernel/kthread.c:389 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> Modules linked in: CR2: 0000000000000098 ---[ end trace 0000000000000000 ]--- RIP: 0010:arch_atomic64_try_cmpxchg arch/x86/include/asm/atomic64_64.h:101 [inline] RIP: 0010:raw_atomic64_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:4296 [inline] RIP: 0010:raw_atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-long.h:1482 [inline] RIP: 0010:atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:4458 [inline] RIP: 0010:rwsem_write_trylock kernel/locking/rwsem.c:284 [inline] RIP: 0010:__down_write_common kernel/locking/rwsem.c:1370 [inline] RIP: 0010:__down_write kernel/locking/rwsem.c:1380 [inline] RIP: 0010:down_write+0x9a/0x2a0 kernel/locking/rwsem.c:1647 Code: 48 c7 44 24 20 00 00 00 00 be 08 00 00 00 e8 9d 40 55 fc 4c 89 f7 be 08 00 00 00 e8 90 40 55 fc 48 8b 44 24 20 b9 01 00 00 00 <f0> 48 0f b1 0b 0f 85 a0 00 00 00 48 c7 c0 c0 b9 20 87 48 c1 e8 03 RSP: 0018:ffffc900000a7500 EFLAGS: 00010256 RAX: 0000000000000000 RBX: 0000000000000098 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900000a7520 RBP: ffffc900000a7598 R08: ffffc900000a7527 R09: 1ffff92000014ea4 R10: dffffc0000000000 R11: fffff52000014ea5 R12: dffffc0000000000 R13: 1ffff92000014ea0 R14: ffffc900000a7520 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000098 CR3: 00000000072aa000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c7 44 24 20 00 00 movq $0x0,0x20(%rsp) 7: 00 00 9: be 08 00 00 00 mov $0x8,%esi e: e8 9d 40 55 fc call 0xfc5540b0 13: 4c 89 f7 mov %r14,%rdi 16: be 08 00 00 00 mov $0x8,%esi 1b: e8 90 40 55 fc call 0xfc5540b0 20: 48 8b 44 24 20 mov 0x20(%rsp),%rax 25: b9 01 00 00 00 mov $0x1,%ecx * 2a: f0 48 0f b1 0b lock cmpxchg %rcx,(%rbx) <-- trapping instruction 2f: 0f 85 a0 00 00 00 jne 0xd5 35: 48 c7 c0 c0 b9 20 87 mov $0xffffffff8720b9c0,%rax 3c: 48 c1 e8 03 shr $0x3,%rax
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/06/19 11:26 | android16-6.12 | 30b14cdad458 | ed3e87f7 | .config | strace log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | |
| 2025/06/21 01:09 | android16-6.12 | 6c1c18fcb8b7 | 804b3919 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/21 00:52 | android16-6.12 | 6c1c18fcb8b7 | 804b3919 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/21 00:47 | android16-6.12 | 6c1c18fcb8b7 | 804b3919 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 21:08 | android16-6.12 | 6c1c18fcb8b7 | 804b3919 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 19:25 | android16-6.12 | 6c1c18fcb8b7 | 804b3919 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 15:15 | android16-6.12 | 6c1c18fcb8b7 | 804b3919 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 08:36 | android16-6.12 | 6c1c18fcb8b7 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 08:34 | android16-6.12 | 6c1c18fcb8b7 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 08:33 | android16-6.12 | 6c1c18fcb8b7 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 07:23 | android16-6.12 | 6c1c18fcb8b7 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 07:14 | android16-6.12 | 6c1c18fcb8b7 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 06:23 | android16-6.12 | f9fbc66f8444 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 03:37 | android16-6.12 | f9fbc66f8444 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 02:15 | android16-6.12 | f9fbc66f8444 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/20 00:08 | android16-6.12 | f9fbc66f8444 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/19 19:13 | android16-6.12 | f9fbc66f8444 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/19 18:20 | android16-6.12 | f9fbc66f8444 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/19 15:14 | android16-6.12 | 30b14cdad458 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file | ||
| 2025/06/19 09:09 | android16-6.12 | 30b14cdad458 | ed3e87f7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-android-6-12-rust | KASAN: null-ptr-deref Write in rust_binderfs_remove_file |