general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 2 PID: 15370 Comm: syz-executor.1 Not tainted 5.10.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:jffs2_parse_param+0x141/0x330 fs/jffs2/super.c:206 Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 66 RSP: 0018:ffffc9000bf0fb58 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88804e427c00 RCX: ffffc9000eeb7000 RDX: 0000000000000001 RSI: ffffffff82867fd6 RDI: 0000000000000008 RBP: 1ffff920017e1f6b R08: 0000000000000001 R09: ffff88806dfbf9d3 R10: 00000000003fffff R11: 0000000000000000 R12: 0000000000085400 R13: ffff88806c15e000 R14: 0000000000000000 R15: 0000000000085400 FS: 0000000000000000(0000) GS:ffff88802ce00000(0063) knlGS:00000000f55bcb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f55bbf68 CR3: 000000006c9c4000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_parse_fs_param fs/fs_context.c:117 [inline] vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98 vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161 generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201 do_new_mount fs/namespace.c:2871 [inline] path_mount+0x1365/0x20c0 fs/namespace.c:3205 do_mount fs/namespace.c:3218 [inline] __do_sys_mount fs/namespace.c:3426 [inline] __se_sys_mount fs/namespace.c:3403 [inline] __ia32_sys_mount+0x27e/0x300 fs/namespace.c:3403 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline] __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:137 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc2549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f55bbf00 EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00000000f55bbf70 RCX: 0000000020000180 RDX: 0000000020000140 RSI: 0000000000000002 RDI: 00000000f55bbfb0 RBP: 00000000f55bbfb0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0b3fdfd6d51e1cc8 ]--- RIP: 0010:jffs2_parse_param+0x141/0x330 fs/jffs2/super.c:206 Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 66 RSP: 0018:ffffc9000bf0fb58 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88804e427c00 RCX: ffffc9000eeb7000 RDX: 0000000000000001 RSI: ffffffff82867fd6 RDI: 0000000000000008 RBP: 1ffff920017e1f6b R08: 0000000000000001 R09: ffff88806dfbf9d3 R10: 00000000003fffff R11: 0000000000000000 R12: 0000000000085400 R13: ffff88806c15e000 R14: 0000000000000000 R15: 0000000000085400 FS: 0000000000000000(0000) GS:ffff88802ce00000(0063) knlGS:00000000f55bcb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f55bbf68 CR3: 000000006c9c4000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400