BUG: unable to handle page fault for address: fffffbfff3e139a3 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 10127 Comm: syz.1.1380 Not tainted 6.11.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0018:ffffc9000d2ef2a0 EFLAGS: 00010086 RAX: 000000000172d001 RBX: 1ffffffff3e139a3 RCX: ffffffff816fe0cb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9f09cd18 RBP: ffffffffffffffff R08: ffffffff9f09cd1f R09: 1ffffffff3e139a3 R10: dffffc0000000000 R11: fffffbfff3e139a3 R12: ffff88805d9f8000 R13: ffff88805d9f8ad8 R14: dffffc0000000001 R15: fffffbfff3e139a4 FS: 00007fbc585a26c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff3e139a3 CR3: 000000002daaa000 CR4: 0000000000350ef0 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] __lock_acquire+0xc8b/0x2040 kernel/locking/lockdep.c:5112 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:568 raw_spin_rq_lock kernel/sched/sched.h:1415 [inline] rq_lock kernel/sched/sched.h:1714 [inline] __schedule+0x357/0x4a60 kernel/sched/core.c:6436 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5763 Code: 2b 00 74 08 4c 89 f7 e8 0a 00 8b 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc9000d2ef900 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92001a5df2c RCX: 8866402fa485a500 RDX: dffffc0000000000 RSI: ffffffff8c0ae6c0 RDI: ffffffff8c606ec0 RBP: ffffc9000d2efa50 R08: ffffffff93734877 R09: 1ffffffff26e690e R10: dffffc0000000000 R11: fffffbfff26e690f R12: 1ffff92001a5df28 R13: dffffc0000000000 R14: ffffc9000d2ef960 R15: 0000000000000246 __might_fault+0xc6/0x120 mm/memory.c:6387 _inline_copy_from_user include/linux/uaccess.h:154 [inline] _copy_from_user+0x2a/0xe0 lib/usercopy.c:18 copy_from_user include/linux/uaccess.h:196 [inline] input_event_from_user+0x1e2/0x4a0 drivers/input/input-compat.c:31 evdev_write+0x4f2/0x7c0 drivers/input/evdev.c:515 vfs_write+0x2a4/0xc90 fs/read_write.c:588 ksys_write+0x1a0/0x2c0 fs/read_write.c:643 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: 0033:0x7fbc57779e79 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbc585a2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fbc57915f80 RCX: 00007fbc57779e79 RDX: 0000000100000008 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007fbc577e793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbc57915f80 R15: 00007ffd2473ddf8 Modules linked in: CR2: fffffbfff3e139a3 ---[ end trace 0000000000000000 ]--- RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0018:ffffc9000d2ef2a0 EFLAGS: 00010086 RAX: 000000000172d001 RBX: 1ffffffff3e139a3 RCX: ffffffff816fe0cb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9f09cd18 RBP: ffffffffffffffff R08: ffffffff9f09cd1f R09: 1ffffffff3e139a3 R10: dffffc0000000000 R11: fffffbfff3e139a3 R12: ffff88805d9f8000 R13: ffff88805d9f8ad8 R14: dffffc0000000001 R15: fffffbfff3e139a4 FS: 00007fbc585a26c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff3e139a3 CR3: 000000002daaa000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess), 7 bytes skipped: 0: df 4f 8d fisttps -0x73(%rdi) 3: 3c 31 cmp $0x31,%al 5: 4c 89 fd mov %r15,%rbp 8: 4c 29 dd sub %r11,%rbp b: 48 83 fd 10 cmp $0x10,%rbp f: 7f 29 jg 0x3a 11: 48 85 ed test %rbp,%rbp 14: 0f 84 3e 01 00 00 je 0x158 1a: 4c 89 cd mov %r9,%rbp 1d: 48 f7 d5 not %rbp 20: 48 01 dd add %rbx,%rbp * 23: 41 80 3b 00 cmpb $0x0,(%r11) <-- trapping instruction 27: 0f 85 c9 01 00 00 jne 0x1f6 2d: 49 ff c3 inc %r11 30: 48 ff c5 inc %rbp 33: 75 ee jne 0x23 35: e9 .byte 0xe9 36: 1e (bad) 37: 01 00 add %eax,(%rax)