[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Warning: Permanently added '10.128.0.7' (ECDSA) to the list of known hosts. Debian GNU/Linux 9 syzkaller ttyS0 executing program syzkaller login: [ 85.155154][ T35] audit: type=1400 audit(1608812701.112:8): avc: denied { execmem } for pid=8516 comm="syz-executor008" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 85.161873][ T8517] loop0: detected capacity change from 512 to 0 [ 85.205636][ T8517] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 85.216235][ T8517] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [ 85.248738][ T8517] ------------[ cut here ]------------ [ 85.254522][ T8517] WARNING: CPU: 1 PID: 8517 at fs/ext4/xattr.c:1640 ext4_xattr_set_entry+0x29aa/0x3780 [ 85.277638][ T8517] Modules linked in: [ 85.282286][ T8517] CPU: 1 PID: 8517 Comm: syz-executor008 Not tainted 5.10.0-syzkaller #0 [ 85.295495][ T8517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.327781][ T8517] RIP: 0010:ext4_xattr_set_entry+0x29aa/0x3780 [ 85.334316][ T8517] Code: 00 e9 18 db ff ff e8 65 33 5a ff 48 8b 7c 24 10 45 31 f6 e8 58 98 cc ff 4c 8b ac 24 18 01 00 00 e9 f9 da ff ff e8 46 33 5a ff <0f> 0b e9 30 e1 ff ff e8 3a 33 5a ff 48 8b 54 24 48 31 f6 4c 89 e7 [ 85.366907][ T8517] RSP: 0018:ffffc900018d73a8 EFLAGS: 00010293 [ 85.374451][ T8517] RAX: 0000000000000000 RBX: ffff8880119aa820 RCX: 0000000000000000 [ 85.384129][ T8517] RDX: ffff88802dbd0280 RSI: ffffffff821917aa RDI: 0000000000000003 [ 85.392607][ T8517] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 85.401167][ T8517] R10: ffffffff8218f8d8 R11: 0000000000000000 R12: 00000000000003dc [ 85.410127][ T8517] R13: 0000000000000000 R14: 0000000000000001 R15: ffffc900018d76f0 [ 85.418375][ T8517] FS: 00007ff18a993700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 85.428530][ T8517] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.447684][ T8517] CR2: 0000558ec158ea20 CR3: 00000000158e7000 CR4: 00000000001506f0 [ 85.456444][ T8517] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.466369][ T8517] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.475544][ T8517] Call Trace: [ 85.480050][ T8517] ? find_held_lock+0x2d/0x110 [ 85.485868][ T8517] ? ext4_xattr_inode_dec_ref_all+0xa30/0xa30 [ 85.493887][ T8517] ? ext4_xattr_block_set+0x70c/0x2f60 [ 85.500387][ T8517] ? rcu_read_lock_sched_held+0x3a/0x70 [ 85.506065][ T8517] ? trace_kmalloc+0xcd/0x100 [ 85.513012][ T8517] ? __kmalloc+0x1a2/0x340 [ 85.519995][ T8517] ? lockdep_hardirqs_on+0x79/0x100 [ 85.525327][ T8517] ext4_xattr_block_set+0x837/0x2f60 [ 85.532126][ T8517] ? ext4_da_get_block_prep+0x11e0/0x11e0 [ 85.539070][ T8517] ? ext4_xattr_block_find+0x690/0x690 [ 85.544750][ T8517] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 85.551449][ T8517] ? errseq_check+0x4b/0x80 [ 85.556017][ T8517] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 85.562618][ T8517] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 85.569454][ T8517] ? ext4_xattr_block_find+0x5c/0x690 [ 85.574841][ T8517] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 85.581194][ T8517] ext4_xattr_set_handle+0xcb6/0x1260 [ 85.586593][ T8517] ? ext4_xattr_ibody_inline_set+0x2b0/0x2b0 [ 85.592678][ T8517] ? avc_has_extended_perms+0xf50/0xf50 [ 85.598437][ T8517] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 85.604685][ T8517] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 85.611016][ T8517] ? ext4_journal_check_start+0x1ae/0x290 [ 85.616752][ T8517] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 85.623085][ T8517] ext4_xattr_set+0x13a/0x340 [ 85.627889][ T8517] ? ext4_xattr_set_credits+0x200/0x200 [ 85.633448][ T8517] ? __sanitizer_cov_trace_cmp1+0x22/0x80 [ 85.639240][ T8517] ? xattr_resolve_name+0x26e/0x3d0 [ 85.644461][ T8517] ? ext4_xattr_hurd_get+0xf0/0xf0 [ 85.649847][ T8517] __vfs_setxattr+0x10e/0x170 [ 85.654554][ T8517] ? xattr_resolve_name+0x3d0/0x3d0 [ 85.659848][ T8517] ? evm_protect_xattr.constprop.0+0x95/0x3c0 [ 85.665933][ T8517] __vfs_setxattr_noperm+0x11a/0x4c0 [ 85.671353][ T8517] __vfs_setxattr_locked+0x1bf/0x250 [ 85.676675][ T8517] ? __might_fault+0xd3/0x180 [ 85.681427][ T8517] vfs_setxattr+0x135/0x320 [ 85.685947][ T8517] ? __vfs_setxattr_locked+0x250/0x250 [ 85.693427][ T8517] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 85.700052][ T8517] ? strncpy_from_user+0x2a0/0x3e0 [ 85.705192][ T8517] setxattr+0x1ff/0x290 [ 85.709445][ T8517] ? vfs_setxattr+0x320/0x320 [ 85.714294][ T8517] ? lock_release+0x710/0x710 [ 85.719069][ T8517] ? preempt_count_add+0x74/0x140 [ 85.724110][ T8517] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 85.730525][ T8517] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 85.736780][ T8517] ? __mnt_want_write+0x1bc/0x2a0 [ 85.741930][ T8517] path_setxattr+0x170/0x190 [ 85.746535][ T8517] ? setxattr+0x290/0x290 [ 85.751483][ T8517] __x64_sys_lsetxattr+0xbd/0x150 [ 85.756522][ T8517] ? syscall_enter_from_user_mode+0x1d/0x50 [ 85.762498][ T8517] do_syscall_64+0x2d/0x70 [ 85.767010][ T8517] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 85.773003][ T8517] RIP: 0033:0x449bb9 [ 85.776900][ T8517] Code: fd d5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb d5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 85.796633][ T8517] RSP: 002b:00007ff18a992d98 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd [ 85.805160][ T8517] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000449bb9 [ 85.813422][ T8517] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000020000140 [ 85.821591][ T8517] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 85.829688][ T8517] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 85.837815][ T8517] R13: 000000010000000f R14: 000000ce0000000c R15: 0000010000000020 [ 85.845831][ T8517] Kernel panic - not syncing: panic_on_warn set ... [ 85.852420][ T8517] CPU: 0 PID: 8517 Comm: syz-executor008 Not tainted 5.10.0-syzkaller #0 [ 85.860816][ T8517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.870869][ T8517] Call Trace: [ 85.874149][ T8517] dump_stack+0x107/0x163 [ 85.878475][ T8517] panic+0x343/0x77f [ 85.882373][ T8517] ? __warn_printk+0xf3/0xf3 [ 85.887040][ T8517] ? __warn.cold+0x1a/0x44 [ 85.891443][ T8517] ? ext4_xattr_set_entry+0x29aa/0x3780 [ 85.896975][ T8517] __warn.cold+0x35/0x44 [ 85.901222][ T8517] ? ext4_xattr_set_entry+0x29aa/0x3780 [ 85.906790][ T8517] report_bug+0x1bd/0x210 [ 85.911127][ T8517] handle_bug+0x3c/0x60 [ 85.915269][ T8517] exc_invalid_op+0x14/0x40 [ 85.919784][ T8517] asm_exc_invalid_op+0x12/0x20 [ 85.924637][ T8517] RIP: 0010:ext4_xattr_set_entry+0x29aa/0x3780 [ 85.930782][ T8517] Code: 00 e9 18 db ff ff e8 65 33 5a ff 48 8b 7c 24 10 45 31 f6 e8 58 98 cc ff 4c 8b ac 24 18 01 00 00 e9 f9 da ff ff e8 46 33 5a ff <0f> 0b e9 30 e1 ff ff e8 3a 33 5a ff 48 8b 54 24 48 31 f6 4c 89 e7 [ 85.950376][ T8517] RSP: 0018:ffffc900018d73a8 EFLAGS: 00010293 [ 85.956440][ T8517] RAX: 0000000000000000 RBX: ffff8880119aa820 RCX: 0000000000000000 [ 85.964396][ T8517] RDX: ffff88802dbd0280 RSI: ffffffff821917aa RDI: 0000000000000003 [ 85.972352][ T8517] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 85.980309][ T8517] R10: ffffffff8218f8d8 R11: 0000000000000000 R12: 00000000000003dc [ 85.988269][ T8517] R13: 0000000000000000 R14: 0000000000000001 R15: ffffc900018d76f0 [ 85.996230][ T8517] ? ext4_xattr_set_entry+0xad8/0x3780 [ 86.001687][ T8517] ? ext4_xattr_set_entry+0x29aa/0x3780 [ 86.007253][ T8517] ? ext4_xattr_set_entry+0x29aa/0x3780 [ 86.012795][ T8517] ? find_held_lock+0x2d/0x110 [ 86.017562][ T8517] ? ext4_xattr_inode_dec_ref_all+0xa30/0xa30 [ 86.023630][ T8517] ? ext4_xattr_block_set+0x70c/0x2f60 [ 86.029160][ T8517] ? rcu_read_lock_sched_held+0x3a/0x70 [ 86.034693][ T8517] ? trace_kmalloc+0xcd/0x100 [ 86.039445][ T8517] ? __kmalloc+0x1a2/0x340 [ 86.043848][ T8517] ? lockdep_hardirqs_on+0x79/0x100 [ 86.049040][ T8517] ext4_xattr_block_set+0x837/0x2f60 [ 86.054491][ T8517] ? ext4_da_get_block_prep+0x11e0/0x11e0 [ 86.060205][ T8517] ? ext4_xattr_block_find+0x690/0x690 [ 86.065666][ T8517] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 86.071389][ T8517] ? errseq_check+0x4b/0x80 [ 86.075896][ T8517] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 86.082122][ T8517] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 86.088350][ T8517] ? ext4_xattr_block_find+0x5c/0x690 [ 86.093712][ T8517] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 86.099946][ T8517] ext4_xattr_set_handle+0xcb6/0x1260 [ 86.105331][ T8517] ? ext4_xattr_ibody_inline_set+0x2b0/0x2b0 [ 86.111301][ T8517] ? avc_has_extended_perms+0xf50/0xf50 [ 86.116840][ T8517] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 86.123070][ T8517] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 86.129298][ T8517] ? ext4_journal_check_start+0x1ae/0x290 [ 86.135007][ T8517] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 86.141239][ T8517] ext4_xattr_set+0x13a/0x340 [ 86.145921][ T8517] ? ext4_xattr_set_credits+0x200/0x200 [ 86.151453][ T8517] ? __sanitizer_cov_trace_cmp1+0x22/0x80 [ 86.157176][ T8517] ? xattr_resolve_name+0x26e/0x3d0 [ 86.162390][ T8517] ? ext4_xattr_hurd_get+0xf0/0xf0 [ 86.167509][ T8517] __vfs_setxattr+0x10e/0x170 [ 86.172190][ T8517] ? xattr_resolve_name+0x3d0/0x3d0 [ 86.177386][ T8517] ? evm_protect_xattr.constprop.0+0x95/0x3c0 [ 86.183459][ T8517] __vfs_setxattr_noperm+0x11a/0x4c0 [ 86.188777][ T8517] __vfs_setxattr_locked+0x1bf/0x250 [ 86.194077][ T8517] ? __might_fault+0xd3/0x180 [ 86.198758][ T8517] vfs_setxattr+0x135/0x320 [ 86.203278][ T8517] ? __vfs_setxattr_locked+0x250/0x250 [ 86.208745][ T8517] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 86.214982][ T8517] ? strncpy_from_user+0x2a0/0x3e0 [ 86.220192][ T8517] setxattr+0x1ff/0x290 [ 86.224535][ T8517] ? vfs_setxattr+0x320/0x320 [ 86.229412][ T8517] ? lock_release+0x710/0x710 [ 86.234117][ T8517] ? preempt_count_add+0x74/0x140 [ 86.239146][ T8517] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 86.245395][ T8517] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 86.251713][ T8517] ? __mnt_want_write+0x1bc/0x2a0 [ 86.256731][ T8517] path_setxattr+0x170/0x190 [ 86.261319][ T8517] ? setxattr+0x290/0x290 [ 86.265645][ T8517] __x64_sys_lsetxattr+0xbd/0x150 [ 86.270677][ T8517] ? syscall_enter_from_user_mode+0x1d/0x50 [ 86.276660][ T8517] do_syscall_64+0x2d/0x70 [ 86.281079][ T8517] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 86.286967][ T8517] RIP: 0033:0x449bb9 [ 86.290860][ T8517] Code: fd d5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb d5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 86.310728][ T8517] RSP: 002b:00007ff18a992d98 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd [ 86.319141][ T8517] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000449bb9 [ 86.327121][ T8517] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000020000140 [ 86.335085][ T8517] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 86.343068][ T8517] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 86.351042][ T8517] R13: 000000010000000f R14: 000000ce0000000c R15: 0000010000000020 [ 86.359981][ T8517] Kernel Offset: disabled [ 86.364589][ T8517] Rebooting in 86400 seconds..