BUG: unable to handle page fault for address: ffffffffffffffeb #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD e136067 P4D e136067 PUD e138067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 9432 Comm: syz-executor.1 Not tainted 6.10.0-rc4-next-20240621-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline] RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline] RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline] RIP: 0010:__brelse+0x38/0xa0 fs/buffer.c:1235 Code: 48 83 c3 60 48 89 df be 04 00 00 00 e8 21 e9 dc ff 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 44 <8b> 2b 31 ff 89 ee e8 ad 83 76 ff 85 ed 74 17 e8 64 7f 76 ff 48 89 RSP: 0018:ffffc9000c50fc68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffffffffffeb RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffffffffeb RBP: 0000000000000008 R08: ffffffffffffffee R09: 1ffffffffffffffd R10: dffffc0000000000 R11: fffffbfffffffffe R12: 0000000000000008 R13: ffff88802a2d4aa0 R14: 0000000000000000 R15: dffffc0000000000 FS: 000055556fa0c480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffeb CR3: 0000000029b68000 CR4: 00000000003526f0 Call Trace: brelse include/linux/buffer_head.h:325 [inline] udf_sb_free_bitmap fs/udf/super.c:339 [inline] udf_free_partition fs/udf/super.c:352 [inline] udf_sb_free_partitions+0x1d5/0x540 fs/udf/super.c:377 udf_put_super+0x113/0x160 fs/udf/super.c:2367 generic_shutdown_super+0x136/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1685 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1267 task_work_run+0x24f/0x310 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f716a07e3d7 Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 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 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff2a7c4478 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f716a07e3d7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff2a7c4530 RBP: 00007fff2a7c4530 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff2a7c55e0 R13: 00007f716a0d96c6 R14: 0000000000090187 R15: 0000000000000017 Modules linked in: CR2: ffffffffffffffeb ---[ end trace 0000000000000000 ]--- RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline] RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline] RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline] RIP: 0010:__brelse+0x38/0xa0 fs/buffer.c:1235 Code: 48 83 c3 60 48 89 df be 04 00 00 00 e8 21 e9 dc ff 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 44 <8b> 2b 31 ff 89 ee e8 ad 83 76 ff 85 ed 74 17 e8 64 7f 76 ff 48 89 RSP: 0018:ffffc9000c50fc68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffffffffffeb RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffffffffeb RBP: 0000000000000008 R08: ffffffffffffffee R09: 1ffffffffffffffd R10: dffffc0000000000 R11: fffffbfffffffffe R12: 0000000000000008 R13: ffff88802a2d4aa0 R14: 0000000000000000 R15: dffffc0000000000 FS: 000055556fa0c480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffeb CR3: 0000000029b68000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 48 83 c3 60 add $0x60,%rbx 4: 48 89 df mov %rbx,%rdi 7: be 04 00 00 00 mov $0x4,%esi c: e8 21 e9 dc ff call 0xffdce932 11: 48 89 d8 mov %rbx,%rax 14: 48 c1 e8 03 shr $0x3,%rax 18: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 1f: fc ff df 22: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax 26: 84 c0 test %al,%al 28: 75 44 jne 0x6e * 2a: 8b 2b mov (%rbx),%ebp <-- trapping instruction 2c: 31 ff xor %edi,%edi 2e: 89 ee mov %ebp,%esi 30: e8 ad 83 76 ff call 0xff7683e2 35: 85 ed test %ebp,%ebp 37: 74 17 je 0x50 39: e8 64 7f 76 ff call 0xff767fa2 3e: 48 rex.W 3f: 89 .byte 0x89