i2c i2c-2: failure reading data ucsi-stm32g0-i2c 2-0003: i2c read 03, 00 error: -5 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000028: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000140-0x0000000000000147] CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210 Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 80 9d 9f 09 cc 66 66 66 66 66 66 2e RSP: 0018:ffffc9000df17400 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffffff81a25add RCX: 0000000080000001 RDX: 0000000000000000 RSI: ffffffff81a25add RDI: 0000000000000028 RBP: ffffffff8256826a R08: 0000000000000001 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1003f12ed9 R12: 0000000000000000 R13: 0000000000000140 R14: 0000000000000140 R15: 0000000000000001 FS: 00007f4338ff16c0(0000) GS:ffff88808c545000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055eebf3a9574 CR3: 00000000401d5000 CR4: 0000000000352ef0 Call Trace: __kasan_check_byte+0x12/0x40 mm/kasan/common.c:573 kasan_check_byte include/linux/kasan.h:402 [inline] lock_acquire+0x84/0x350 kernel/locking/lockdep.c:5842 down_write_nested+0x9d/0x210 kernel/locking/rwsem.c:1757 inode_lock_nested include/linux/fs.h:1069 [inline] __simple_recursive_removal+0x9a/0x520 fs/libfs.c:606 debugfs_remove+0x5b/0x70 fs/debugfs/inode.c:781 i2c_device_probe+0x8dc/0xbf0 drivers/i2c/i2c-core-base.c:610 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x254/0xae0 drivers/base/dd.c:706 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x12a/0x220 drivers/base/bus.c:620 device_add+0x7d7/0xb80 drivers/base/core.c:3772 i2c_new_client_device+0xa29/0x1130 drivers/i2c/i2c-core-base.c:1019 new_device_store+0x24b/0x530 drivers/i2c/i2c-core-base.c:1307 kernfs_fop_write_iter+0x3a4/0x540 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x612/0xba0 fs/read_write.c:687 ksys_write+0x150/0x270 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f433819de99 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:00007f4338ff0fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f4338425fa0 RCX: 00007f433819de99 RDX: 0000000000000011 RSI: 0000200000000a00 RDI: 0000000000000008 RBP: 00007f4338233eaf R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4338426038 R14: 00007f4338425fa0 R15: 00007ffcc2136c08 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210 Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 80 9d 9f 09 cc 66 66 66 66 66 66 2e RSP: 0018:ffffc9000df17400 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffffff81a25add RCX: 0000000080000001 RDX: 0000000000000000 RSI: ffffffff81a25add RDI: 0000000000000028 RBP: ffffffff8256826a R08: 0000000000000001 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1003f12ed9 R12: 0000000000000000 R13: 0000000000000140 R14: 0000000000000140 R15: 0000000000000001 FS: 00007f4338ff16c0(0000) GS:ffff88808c545000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000058 CR3: 00000000401d5000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: 0f 1f 40 00 nopl 0x0(%rax) 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 0f 1f 40 d6 nopl -0x2a(%rax) 18: 48 c1 ef 03 shr $0x3,%rdi 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df * 26: 0f b6 04 07 movzbl (%rdi,%rax,1),%eax <-- trapping instruction 2a: 3c 08 cmp $0x8,%al 2c: 0f 92 c0 setb %al 2f: e9 80 9d 9f 09 jmp 0x99f9db4 34: cc int3 35: 66 data16 36: 66 data16 37: 66 data16 38: 66 data16 39: 66 data16 3a: 66 data16 3b: 2e cs