./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4175891234 <...> syzkaller login: [ 6.090771][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!! [ 6.670674][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 9.790703][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 11.422236][ T23] kauditd_printk_skb: 60 callbacks suppressed [ 11.422243][ T23] audit: type=1400 audit(1671853506.769:71): avc: denied { transition } for pid=302 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 11.428112][ T23] audit: type=1400 audit(1671853506.769:72): avc: denied { write } for pid=302 comm="sh" path="pipe:[11288]" dev="pipefs" ino=11288 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 11.470667][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 11.540744][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!! [ 11.631807][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! [ 12.660578][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. execve("./syz-executor4175891234", ["./syz-executor4175891234"], 0x7ffd6048bef0 /* 10 vars */) = 0 brk(NULL) = 0x5555558c6000 brk(0x5555558c6c40) = 0x5555558c6c40 arch_prctl(ARCH_SET_FS, 0x5555558c6300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4175891234", 4096) = 28 brk(0x5555558e7c40) = 0x5555558e7c40 brk(0x5555558e8000) = 0x5555558e8000 mprotect(0x7f665de1c000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555558c65d0) = 384 ./strace-static-x86_64: Process 384 attached [pid 384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 384] setpgid(0, 0) = 0 [pid 384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 384] write(3, "1000", 4) = 4 [pid 384] close(3) = 0 [pid 384] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 384] ioctl(3, LOOP_CTL_ADD, 0) = -1 EEXIST (File exists) [ 19.609926][ T23] audit: type=1400 audit(1671853514.949:73): avc: denied { execmem } for pid=383 comm="syz-executor417" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.615049][ T23] audit: type=1400 audit(1671853514.959:74): avc: denied { read } for pid=384 comm="syz-executor417" name="loop-control" dev="devtmpfs" ino=114 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1 [ 19.618548][ T23] audit: type=1400 audit(1671853514.959:75): avc: denied { open } for pid=384 comm="syz-executor417" path="/dev/loop-control" dev="devtmpfs" ino=114 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1 [ 19.622353][ T23] audit: type=1400 audit(1671853514.959:76): avc: denied { ioctl } for pid=384 comm="syz-executor417" path="/dev/loop-control" dev="devtmpfs" ino=114 ioctlcmd=0x4c80 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1 [pid 384] ioctl(3, LOOP_CTL_REMOVE, 0) = 0 [pid 384] ioctl(3, LOOP_CTL_ADD, 4194304) = 4194304 [pid 384] exit_group(0) = ? [pid 384] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=384, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555558c65d0) = 387 ./strace-static-x86_64: Process 387 attached [pid 387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 387] setpgid(0, 0) = 0 [pid 387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 387] write(3, "1000", 4) = 4 [pid 387] close(3) = 0 [pid 387] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [ 19.718988][ T387] sysfs: cannot create duplicate filename '/devices/virtual/bdi/7:0' [ 19.727122][ T387] CPU: 0 PID: 387 Comm: syz-executor417 Not tainted 5.10.160-syzkaller-01321-g003c389455eb #0 [ 19.737340][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 19.747378][ T387] Call Trace: [ 19.750665][ T387] dump_stack_lvl+0x1e2/0x24b [ 19.755312][ T387] ? bfq_pos_tree_add_move+0x43e/0x43e [ 19.760744][ T387] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 19.766268][ T387] ? sysfs_create_dir_ns+0x27e/0x390 [ 19.771621][ T387] dump_stack+0x15/0x17 [ 19.775757][ T387] sysfs_create_dir_ns+0x2c4/0x390 [ 19.780850][ T387] ? sysfs_warn_dup+0xa0/0xa0 [ 19.785501][ T387] kobject_add_internal+0x766/0xda0 [ 19.791112][ T387] kobject_add+0x14c/0x210 [ 19.795518][ T387] ? _raw_spin_lock+0xa3/0x1b0 [ 19.800262][ T387] ? kobject_init+0x1e0/0x1e0 [ 19.804912][ T387] ? mutex_unlock+0x29/0xf0 [ 19.809476][ T387] ? get_device_parent+0x2c5/0x430 [ 19.814565][ T387] device_add+0x3ca/0xbd0 [ 19.818885][ T387] device_create+0x258/0x2e0 [ 19.823456][ T387] ? root_device_unregister+0x80/0x80 [ 19.828806][ T387] ? number+0xd9b/0x1040 [ 19.833111][ T387] bdi_register_va+0x94/0x600 [ 19.837768][ T387] bdi_register+0xd1/0x120 [ 19.843115][ T387] ? __device_add_disk+0x536/0x11d0 [ 19.848298][ T387] ? bdi_register_va+0x600/0x600 [ 19.853207][ T387] ? vsnprintf+0x1bfd/0x1cd0 [ 19.857772][ T387] ? __kasan_check_read+0x11/0x20 [ 19.862780][ T387] ? blk_alloc_devt+0xd4/0x320 [ 19.867536][ T387] __device_add_disk+0x5cb/0x11d0 [ 19.872541][ T387] ? device_add_disk+0x40/0x40 [ 19.877277][ T387] ? loop_add+0x400/0x760 [ 19.881583][ T387] ? vsprintf+0x40/0x40 [ 19.885720][ T387] device_add_disk+0x2a/0x40 [ 19.890301][ T387] loop_add+0x58f/0x760 [ 19.894438][ T387] loop_control_ioctl+0x564/0x740 [ 19.899435][ T387] ? loop_remove+0xb0/0xb0 [ 19.903821][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 19.909007][ T387] ? ptrace_notify+0x248/0x340 [ 19.913774][ T387] ? do_notify_parent+0xa40/0xa40 [ 19.918773][ T387] ? security_file_ioctl+0xb1/0xd0 [ 19.923852][ T387] ? loop_remove+0xb0/0xb0 [ 19.928241][ T387] __se_sys_ioctl+0x115/0x190 [ 19.932892][ T387] __x64_sys_ioctl+0x7b/0x90 [ 19.937459][ T387] do_syscall_64+0x34/0x70 [ 19.941847][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 19.947707][ T387] RIP: 0033:0x7f665ddafd59 [ 19.952092][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 19.971772][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 19.980162][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 19.988108][ T387] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 19.996056][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 20.004002][ T387] R10: 00007fff71bf48c0 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 20.011944][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 20.020014][ T387] kobject_add_internal failed for 7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 20.032934][ T387] ------------[ cut here ]------------ [ 20.038399][ T387] WARNING: CPU: 0 PID: 387 at block/genhd.c:821 __device_add_disk+0xe7c/0x11d0 [ 20.047362][ T387] Modules linked in: [ 20.051371][ T387] CPU: 0 PID: 387 Comm: syz-executor417 Not tainted 5.10.160-syzkaller-01321-g003c389455eb #0 [ 20.061614][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 20.071683][ T387] RIP: 0010:__device_add_disk+0xe7c/0x11d0 [ 20.077467][ T387] Code: ff ff e8 b7 ee 2b ff 0f 0b e9 28 f3 ff ff e8 ab ee 2b ff 0f 0b 42 80 3c 33 00 0f 85 db f8 ff ff e9 de f8 ff ff e8 94 ee 2b ff <0f> 0b e9 60 f7 ff ff e8 88 ee 2b ff e9 13 ff ff ff 44 89 f1 80 e1 [ 20.097514][ T387] RSP: 0018:ffffc900009afbc0 EFLAGS: 00010293 [ 20.103597][ T387] RAX: ffffffff8241331c RBX: 00000000ffffffef RCX: ffff8881065d3b40 [ 20.111655][ T387] RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000 [ 20.119609][ T387] RBP: ffffc900009afd08 R08: ffffffff82412a76 R09: 0000000000000003 [ 20.127584][ T387] R10: fffff52000135e8d R11: 1ffff92000135e8c R12: 0000000000000007 [ 20.135559][ T387] R13: ffff8881059b0000 R14: ffff8881059b1338 R15: ffff8881059b1000 [ 20.143538][ T387] FS: 00005555558c6300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.152465][ T387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.159023][ T387] CR2: 00007f665de20130 CR3: 00000001061d6000 CR4: 00000000003506b0 [ 20.166999][ T387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.174984][ T387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.182987][ T387] Call Trace: [ 20.186261][ T387] ? device_add_disk+0x40/0x40 [ 20.191034][ T387] ? loop_add+0x400/0x760 [ 20.195352][ T387] ? vsprintf+0x40/0x40 [ 20.199482][ T387] device_add_disk+0x2a/0x40 [ 20.204158][ T387] loop_add+0x58f/0x760 [ 20.208293][ T387] loop_control_ioctl+0x564/0x740 [ 20.213322][ T387] ? loop_remove+0xb0/0xb0 [ 20.217722][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 20.222923][ T387] ? ptrace_notify+0x248/0x340 [ 20.227670][ T387] ? do_notify_parent+0xa40/0xa40 [ 20.232694][ T387] ? security_file_ioctl+0xb1/0xd0 [ 20.237793][ T387] ? loop_remove+0xb0/0xb0 [ 20.242211][ T387] __se_sys_ioctl+0x115/0x190 [ 20.246954][ T387] __x64_sys_ioctl+0x7b/0x90 [ 20.251549][ T387] do_syscall_64+0x34/0x70 [ 20.255963][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 20.261854][ T387] RIP: 0033:0x7f665ddafd59 [ 20.266248][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 20.285859][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 20.294285][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 20.302282][ T387] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 20.310244][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 20.318247][ T387] R10: 00007fff71bf48c0 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 20.326262][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 20.334244][ T387] ---[ end trace 113edac549385e76 ]--- [ 20.339807][ T387] sysfs: cannot create duplicate filename '/dev/block/7:0' [ 20.347008][ T387] CPU: 0 PID: 387 Comm: syz-executor417 Tainted: G W 5.10.160-syzkaller-01321-g003c389455eb #0 [ 20.358606][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 20.368637][ T387] Call Trace: [ 20.371910][ T387] dump_stack_lvl+0x1e2/0x24b [ 20.376558][ T387] ? bfq_pos_tree_add_move+0x43e/0x43e [ 20.381998][ T387] ? __kasan_kmalloc+0x9/0x10 [ 20.386702][ T387] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 20.392227][ T387] dump_stack+0x15/0x17 [ 20.396355][ T387] sysfs_warn_dup+0x90/0xa0 [ 20.400840][ T387] sysfs_do_create_link_sd+0xc2/0x110 [ 20.406192][ T387] sysfs_create_link+0x68/0x80 [ 20.410930][ T387] device_create_sys_dev_entry+0x118/0x170 [ 20.416713][ T387] ? device_add_attrs+0x3e0/0x3e0 [ 20.421714][ T387] ? device_create_file+0x110/0x1d0 [ 20.426903][ T387] device_add+0x811/0xbd0 [ 20.431216][ T387] __device_add_disk+0x77d/0x11d0 [ 20.436219][ T387] ? device_add_disk+0x40/0x40 [ 20.440962][ T387] ? vsprintf+0x40/0x40 [ 20.445090][ T387] device_add_disk+0x2a/0x40 [ 20.449652][ T387] loop_add+0x58f/0x760 [ 20.453776][ T387] loop_control_ioctl+0x564/0x740 [ 20.458771][ T387] ? loop_remove+0xb0/0xb0 [ 20.463159][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 20.468341][ T387] ? ptrace_notify+0x248/0x340 [ 20.473079][ T387] ? do_notify_parent+0xa40/0xa40 [ 20.478074][ T387] ? security_file_ioctl+0xb1/0xd0 [ 20.483154][ T387] ? loop_remove+0xb0/0xb0 [ 20.487541][ T387] __se_sys_ioctl+0x115/0x190 [ 20.492190][ T387] __x64_sys_ioctl+0x7b/0x90 [ 20.496749][ T387] do_syscall_64+0x34/0x70 [ 20.501141][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 20.507115][ T387] RIP: 0033:0x7f665ddafd59 [ 20.511535][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 20.531117][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 20.539514][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 20.547566][ T387] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 20.555550][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 20.563509][ T387] R10: 00007fff71bf48c0 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 20.571467][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 20.579657][ T387] kobject_add_internal failed for queue (error: -2 parent: loop0) [ 20.587549][ T387] ------------[ cut here ]------------ [ 20.593039][ T387] WARNING: CPU: 0 PID: 387 at fs/sysfs/file.c:328 sysfs_create_files+0x215/0x4a0 [ 20.602151][ T387] Modules linked in: [ 20.606067][ T387] CPU: 0 PID: 387 Comm: syz-executor417 Tainted: G W 5.10.160-syzkaller-01321-g003c389455eb #0 [ 20.617698][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 20.627782][ T387] RIP: 0010:sysfs_create_files+0x215/0x4a0 [ 20.633712][ T387] Code: 24 04 48 b9 00 00 00 00 00 fc ff df 48 8b 54 24 08 4c 8b 74 24 20 eb 2b 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 5b a2 9a ff <0f> 0b c7 44 24 04 ea ff ff ff 48 b9 00 00 00 00 00 fc ff df 48 8b [ 20.653541][ T387] RSP: 0018:ffffc900009afae0 EFLAGS: 00010293 [ 20.659598][ T387] RAX: ffffffff81d27fd1 RBX: ffff8881059b1098 RCX: ffff8881065d3b40 [ 20.667584][ T387] RDX: 0000000000000000 RSI: ffffffff8653acc0 RDI: ffff8881059b1068 [ 20.675564][ T387] RBP: ffffc900009afbb0 R08: ffffffff826c6018 R09: ffffed102127669c [ 20.683544][ T387] R10: ffffed102127669c R11: 1ffff1102127669b R12: 0000000000000000 [ 20.691527][ T387] R13: ffffffff854334a0 R14: ffff8881059b1068 R15: ffffffff8653acc0 [ 20.699486][ T387] FS: 00005555558c6300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.708505][ T387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.715104][ T387] CR2: 00007f665de20130 CR3: 00000001061d6000 CR4: 00000000003506b0 [ 20.723101][ T387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.731068][ T387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.739011][ T387] Call Trace: [ 20.742319][ T387] ? sysfs_create_file_ns+0x2a0/0x2a0 [ 20.747685][ T387] ? __kasan_check_write+0x14/0x20 [ 20.752811][ T387] ? kobject_get+0xd2/0x120 [ 20.757305][ T387] __device_add_disk+0x9cb/0x11d0 [ 20.762339][ T387] ? device_add_disk+0x40/0x40 [ 20.767126][ T387] ? vsprintf+0x40/0x40 [ 20.771282][ T387] device_add_disk+0x2a/0x40 [ 20.775859][ T387] loop_add+0x58f/0x760 [ 20.780511][ T387] loop_control_ioctl+0x564/0x740 [ 20.785585][ T387] ? loop_remove+0xb0/0xb0 [ 20.790070][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 20.795273][ T387] ? ptrace_notify+0x248/0x340 [ 20.800031][ T387] ? do_notify_parent+0xa40/0xa40 [ 20.805071][ T387] ? security_file_ioctl+0xb1/0xd0 [ 20.810177][ T387] ? loop_remove+0xb0/0xb0 [ 20.814658][ T387] __se_sys_ioctl+0x115/0x190 [ 20.819873][ T387] __x64_sys_ioctl+0x7b/0x90 [ 20.824753][ T387] do_syscall_64+0x34/0x70 [ 20.829167][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 20.835097][ T387] RIP: 0033:0x7f665ddafd59 [ 20.839500][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 20.859149][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 20.867576][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 20.875563][ T387] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 20.883535][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 20.891508][ T387] R10: 00007fff71bf48c0 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 20.899464][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 20.907441][ T387] ---[ end trace 113edac549385e77 ]--- [ 20.912892][ T387] ------------[ cut here ]------------ [ 20.918319][ T387] kernfs: can not remove 'events', no directory [ 20.924625][ T387] WARNING: CPU: 0 PID: 387 at fs/kernfs/dir.c:1515 kernfs_remove_by_name_ns+0xc0/0x110 [ 20.934245][ T387] Modules linked in: [ 20.938119][ T387] CPU: 0 PID: 387 Comm: syz-executor417 Tainted: G W 5.10.160-syzkaller-01321-g003c389455eb #0 [ 20.949737][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 20.959814][ T387] RIP: 0010:kernfs_remove_by_name_ns+0xc0/0x110 [ 20.966062][ T387] Code: 48 89 df e8 72 ee ff ff 48 89 df e8 8a b1 ff ff 31 db eb 29 e8 c1 00 9b ff 48 c7 c7 c0 32 2d 85 4c 89 fe 31 c0 e8 70 17 6d ff <0f> 0b bb fe ff ff ff eb 16 e8 a2 00 9b ff bb fe ff ff ff 48 c7 c7 [ 20.985685][ T387] RSP: 0018:ffffc900009afab8 EFLAGS: 00010246 [ 20.991778][ T387] RAX: d09dfcb2fad9ec00 RBX: 0000000000000000 RCX: ffff8881065d3b40 [ 20.999734][ T387] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 21.007708][ T387] RBP: ffffc900009afad0 R08: ffffffff81540db8 R09: fffff52000135e7d [ 21.015678][ T387] R10: fffff52000135e7d R11: 1ffff92000135e7c R12: ffffffff8653acc0 [ 21.023655][ T387] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff85433480 [ 21.031759][ T387] FS: 00005555558c6300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.040690][ T387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.047279][ T387] CR2: 00007f665de20130 CR3: 00000001061d6000 CR4: 00000000003506b0 [ 21.055265][ T387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.063251][ T387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.071247][ T387] Call Trace: [ 21.074521][ T387] sysfs_create_files+0x40a/0x4a0 [ 21.079543][ T387] ? sysfs_create_file_ns+0x2a0/0x2a0 [ 21.084949][ T387] ? __kasan_check_write+0x14/0x20 [ 21.090063][ T387] ? kobject_get+0xd2/0x120 [ 21.094589][ T387] __device_add_disk+0x9cb/0x11d0 [ 21.099600][ T387] ? device_add_disk+0x40/0x40 [ 21.104373][ T387] ? vsprintf+0x40/0x40 [ 21.108522][ T387] device_add_disk+0x2a/0x40 [ 21.113127][ T387] loop_add+0x58f/0x760 [ 21.117273][ T387] loop_control_ioctl+0x564/0x740 [ 21.122297][ T387] ? loop_remove+0xb0/0xb0 [ 21.126706][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 21.131949][ T387] ? ptrace_notify+0x248/0x340 [ 21.136706][ T387] ? do_notify_parent+0xa40/0xa40 [ 21.141755][ T387] ? security_file_ioctl+0xb1/0xd0 [ 21.146859][ T387] ? loop_remove+0xb0/0xb0 [ 21.151281][ T387] __se_sys_ioctl+0x115/0x190 [ 21.155953][ T387] __x64_sys_ioctl+0x7b/0x90 [ 21.160515][ T387] do_syscall_64+0x34/0x70 [ 21.164941][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 21.170849][ T387] RIP: 0033:0x7f665ddafd59 [ 21.175235][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 21.194860][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 21.203470][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 21.211476][ T387] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [pid 387] ioctl(3, LOOP_CTL_ADD, 0) = 0 [ 21.219431][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 21.227409][ T387] R10: 00007fff71bf48c0 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 21.235470][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 21.243443][ T387] ---[ end trace 113edac549385e78 ]--- [ 21.248878][ T387] loop0: failed to create sysfs files for events [ 21.255358][ T387] ------------[ cut here ]------------ [ 21.260823][ T387] kernfs: can not remove 'events', no directory [ 21.267107][ T387] WARNING: CPU: 0 PID: 387 at fs/kernfs/dir.c:1515 kernfs_remove_by_name_ns+0xc0/0x110 [ 21.276731][ T387] Modules linked in: [ 21.281236][ T387] CPU: 0 PID: 387 Comm: syz-executor417 Tainted: G W 5.10.160-syzkaller-01321-g003c389455eb #0 [ 21.292855][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 21.302935][ T387] RIP: 0010:kernfs_remove_by_name_ns+0xc0/0x110 [ 21.309156][ T387] Code: 48 89 df e8 72 ee ff ff 48 89 df e8 8a b1 ff ff 31 db eb 29 e8 c1 00 9b ff 48 c7 c7 c0 32 2d 85 4c 89 fe 31 c0 e8 70 17 6d ff <0f> 0b bb fe ff ff ff eb 16 e8 a2 00 9b ff bb fe ff ff ff 48 c7 c7 [ 21.328948][ T387] RSP: 0018:ffffc900009afbf8 EFLAGS: 00010246 [ 21.335041][ T387] RAX: d09dfcb2fad9ec00 RBX: 0000000000000000 RCX: ffff8881065d3b40 [ 21.343034][ T387] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 21.351006][ T387] RBP: ffffc900009afc10 R08: ffffffff81540db8 R09: ffffed103ee04e93 [ 21.358954][ T387] R10: ffffed103ee04e93 R11: 1ffff1103ee04e92 R12: 0000000000000000 [ 21.366935][ T387] R13: ffffffff8653acc0 R14: 0000000000000000 R15: ffffffff85433480 [ 21.374917][ T387] FS: 00005555558c6300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.383851][ T387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.390419][ T387] CR2: 00007f665de20130 CR3: 00000001061d6000 CR4: 00000000003506b0 [ 21.398398][ T387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.406370][ T387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.414340][ T387] Call Trace: [ 21.417617][ T387] sysfs_remove_files+0xab/0x110 [ 21.422556][ T387] del_gendisk+0x278/0xe20 [ 21.426962][ T387] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.432178][ T387] ? device_add_disk_no_queue_reg+0x30/0x30 [ 21.438058][ T387] ? __radix_tree_delete+0x2ba/0x380 [ 21.443351][ T387] ? radix_tree_delete_item+0x261/0x360 [ 21.448883][ T387] loop_remove+0x46/0xb0 [ 21.453130][ T387] loop_control_ioctl+0x67f/0x740 [ 21.458147][ T387] ? loop_remove+0xb0/0xb0 [ 21.462610][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 21.467811][ T387] ? ptrace_notify+0x248/0x340 [ 21.472610][ T387] ? do_notify_parent+0xa40/0xa40 [ 21.477641][ T387] ? __fpregs_load_activate+0x1e7/0x370 [ 21.483211][ T387] ? security_file_ioctl+0xb1/0xd0 [ 21.488659][ T387] ? loop_remove+0xb0/0xb0 [ 21.493088][ T387] __se_sys_ioctl+0x115/0x190 [ 21.497839][ T387] __x64_sys_ioctl+0x7b/0x90 [ 21.502457][ T387] do_syscall_64+0x34/0x70 [ 21.506856][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 21.512747][ T387] RIP: 0033:0x7f665ddafd59 [ 21.517146][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 21.536799][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 21.545235][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 21.553211][ T387] RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003 [ 21.561200][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 21.569162][ T387] R10: 00007fff71bf4fe8 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 21.577136][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 21.585126][ T387] ---[ end trace 113edac549385e79 ]--- [ 21.590598][ T387] ------------[ cut here ]------------ [ 21.596034][ T387] kernfs: can not remove 'events_async', no directory [ 21.602862][ T387] WARNING: CPU: 0 PID: 387 at fs/kernfs/dir.c:1515 kernfs_remove_by_name_ns+0xc0/0x110 [ 21.612488][ T387] Modules linked in: [ 21.616466][ T387] CPU: 0 PID: 387 Comm: syz-executor417 Tainted: G W 5.10.160-syzkaller-01321-g003c389455eb #0 [ 21.628095][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 21.638173][ T387] RIP: 0010:kernfs_remove_by_name_ns+0xc0/0x110 [ 21.644420][ T387] Code: 48 89 df e8 72 ee ff ff 48 89 df e8 8a b1 ff ff 31 db eb 29 e8 c1 00 9b ff 48 c7 c7 c0 32 2d 85 4c 89 fe 31 c0 e8 70 17 6d ff <0f> 0b bb fe ff ff ff eb 16 e8 a2 00 9b ff bb fe ff ff ff 48 c7 c7 [ 21.665179][ T387] RSP: 0018:ffffc900009afbf8 EFLAGS: 00010246 [ 21.671272][ T387] RAX: d09dfcb2fad9ec00 RBX: 0000000000000000 RCX: ffff8881065d3b40 [ 21.679248][ T387] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 21.687278][ T387] RBP: ffffc900009afc10 R08: ffffffff81540db8 R09: fffff52000135ea5 [ 21.695258][ T387] R10: fffff52000135ea5 R11: 1ffff92000135ea4 R12: 0000000000000000 [ 21.703234][ T387] R13: ffffffff8653acc0 R14: 0000000000000000 R15: ffffffff85433560 [ 21.711210][ T387] FS: 00005555558c6300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.720205][ T387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.726909][ T387] CR2: 00007f665de20130 CR3: 00000001061d6000 CR4: 00000000003506b0 [ 21.734898][ T387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.742884][ T387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.750863][ T387] Call Trace: [ 21.754142][ T387] sysfs_remove_files+0xab/0x110 [ 21.759059][ T387] del_gendisk+0x278/0xe20 [ 21.763480][ T387] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 21.768576][ T387] ? device_add_disk_no_queue_reg+0x30/0x30 [ 21.774477][ T387] ? __radix_tree_delete+0x2ba/0x380 [ 21.779760][ T387] ? radix_tree_delete_item+0x261/0x360 [ 21.785665][ T387] loop_remove+0x46/0xb0 [ 21.789901][ T387] loop_control_ioctl+0x67f/0x740 [ 21.795044][ T387] ? loop_remove+0xb0/0xb0 [ 21.799460][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 21.804674][ T387] ? ptrace_notify+0x248/0x340 [ 21.809444][ T387] ? do_notify_parent+0xa40/0xa40 [ 21.814481][ T387] ? __fpregs_load_activate+0x1e7/0x370 [ 21.820283][ T387] ? security_file_ioctl+0xb1/0xd0 [ 21.825442][ T387] ? loop_remove+0xb0/0xb0 [ 21.829862][ T387] __se_sys_ioctl+0x115/0x190 [ 21.834587][ T387] __x64_sys_ioctl+0x7b/0x90 [ 21.839259][ T387] do_syscall_64+0x34/0x70 [ 21.843685][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 21.849587][ T387] RIP: 0033:0x7f665ddafd59 [ 21.854009][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 21.873648][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 21.882077][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 21.890037][ T387] RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003 [ 21.898364][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 21.906335][ T387] R10: 00007fff71bf4fe8 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 21.914310][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 21.922286][ T387] ---[ end trace 113edac549385e7a ]--- [ 21.927721][ T387] ------------[ cut here ]------------ [ 21.933177][ T387] kernfs: can not remove 'events_poll_msecs', no directory [ 21.940413][ T387] WARNING: CPU: 0 PID: 387 at fs/kernfs/dir.c:1515 kernfs_remove_by_name_ns+0xc0/0x110 [ 21.950048][ T387] Modules linked in: [ 21.953954][ T387] CPU: 0 PID: 387 Comm: syz-executor417 Tainted: G W 5.10.160-syzkaller-01321-g003c389455eb #0 [ 21.965585][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 21.976151][ T387] RIP: 0010:kernfs_remove_by_name_ns+0xc0/0x110 [ 21.982483][ T387] Code: 48 89 df e8 72 ee ff ff 48 89 df e8 8a b1 ff ff 31 db eb 29 e8 c1 00 9b ff 48 c7 c7 c0 32 2d 85 4c 89 fe 31 c0 e8 70 17 6d ff <0f> 0b bb fe ff ff ff eb 16 e8 a2 00 9b ff bb fe ff ff ff 48 c7 c7 [ 22.002096][ T387] RSP: 0018:ffffc900009afbf8 EFLAGS: 00010246 [ 22.008156][ T387] RAX: d09dfcb2fad9ec00 RBX: 0000000000000000 RCX: ffff8881065d3b40 [ 22.016135][ T387] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 22.024106][ T387] RBP: ffffc900009afc10 R08: ffffffff81540db8 R09: ffffed103ee0a5e8 [ 22.032081][ T387] R10: ffffed103ee0a5e8 R11: 1ffff1103ee0a5e7 R12: 0000000000000000 [ 22.040037][ T387] R13: ffffffff8653acc0 R14: 0000000000000000 R15: ffffffff854335c0 [ 22.048019][ T387] FS: 00005555558c6300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.056946][ T387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.063533][ T387] CR2: 00007f665de20130 CR3: 00000001061d6000 CR4: 00000000003506b0 [ 22.071507][ T387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.079455][ T387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.087685][ T387] Call Trace: [ 22.091067][ T387] sysfs_remove_files+0xab/0x110 [ 22.096069][ T387] del_gendisk+0x278/0xe20 [ 22.100458][ T387] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 22.105571][ T387] ? device_add_disk_no_queue_reg+0x30/0x30 [ 22.111463][ T387] ? __radix_tree_delete+0x2ba/0x380 [ 22.116721][ T387] ? radix_tree_delete_item+0x261/0x360 [ 22.122270][ T387] loop_remove+0x46/0xb0 [ 22.126618][ T387] loop_control_ioctl+0x67f/0x740 [ 22.131665][ T387] ? loop_remove+0xb0/0xb0 [ 22.136065][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 22.141347][ T387] ? ptrace_notify+0x248/0x340 [ 22.146099][ T387] ? do_notify_parent+0xa40/0xa40 [ 22.151212][ T387] ? __fpregs_load_activate+0x1e7/0x370 [ 22.156753][ T387] ? security_file_ioctl+0xb1/0xd0 [ 22.162398][ T387] ? loop_remove+0xb0/0xb0 [ 22.166814][ T387] __se_sys_ioctl+0x115/0x190 [ 22.171515][ T387] __x64_sys_ioctl+0x7b/0x90 [ 22.176134][ T387] do_syscall_64+0x34/0x70 [ 22.180586][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 22.186744][ T387] RIP: 0033:0x7f665ddafd59 [ 22.191160][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 22.210772][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 22.219269][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 22.227251][ T387] RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003 [ 22.235236][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 22.243264][ T387] R10: 00007fff71bf4fe8 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 22.251247][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 22.259197][ T387] ---[ end trace 113edac549385e7b ]--- [ 22.264675][ T387] ------------[ cut here ]------------ [ 22.270130][ T387] kernfs: can not remove 'bdi', no directory [ 22.276176][ T387] WARNING: CPU: 1 PID: 387 at fs/kernfs/dir.c:1515 kernfs_remove_by_name_ns+0xc0/0x110 [ 22.285789][ T387] Modules linked in: [ 22.289662][ T387] CPU: 1 PID: 387 Comm: syz-executor417 Tainted: G W 5.10.160-syzkaller-01321-g003c389455eb #0 [ 22.301281][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 22.311347][ T387] RIP: 0010:kernfs_remove_by_name_ns+0xc0/0x110 [ 22.317561][ T387] Code: 48 89 df e8 72 ee ff ff 48 89 df e8 8a b1 ff ff 31 db eb 29 e8 c1 00 9b ff 48 c7 c7 c0 32 2d 85 4c 89 fe 31 c0 e8 70 17 6d ff <0f> 0b bb fe ff ff ff eb 16 e8 a2 00 9b ff bb fe ff ff ff 48 c7 c7 [ 22.337182][ T387] RSP: 0018:ffffc900009afc18 EFLAGS: 00010246 [ 22.343255][ T387] RAX: d09dfcb2fad9ec00 RBX: 0000000000000000 RCX: ffff8881065d3b40 [ 22.351225][ T387] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 22.359177][ T387] RBP: ffffc900009afc30 R08: ffffffff81540db8 R09: fffff52000135ea9 [ 22.367154][ T387] R10: fffff52000135ea9 R11: 1ffff92000135ea8 R12: 0000000000000240 [ 22.375120][ T387] R13: ffff8881059b1030 R14: 0000000000000000 R15: ffffffff85432e60 [ 22.383091][ T387] FS: 00005555558c6300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.392008][ T387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.398565][ T387] CR2: 00007f665ddf301d CR3: 00000001061d6000 CR4: 00000000003506a0 [ 22.406543][ T387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.414518][ T387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.422481][ T387] Call Trace: [ 22.425754][ T387] sysfs_remove_link+0x50/0x60 [ 22.430726][ T387] del_gendisk+0x7cd/0xe20 [ 22.435132][ T387] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 22.440215][ T387] ? device_add_disk_no_queue_reg+0x30/0x30 [ 22.446107][ T387] ? __radix_tree_delete+0x2ba/0x380 [ 22.451400][ T387] ? radix_tree_delete_item+0x261/0x360 [ 22.456917][ T387] loop_remove+0x46/0xb0 [ 22.461157][ T387] loop_control_ioctl+0x67f/0x740 [ 22.466175][ T387] ? loop_remove+0xb0/0xb0 [ 22.470606][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 22.475821][ T387] ? ptrace_notify+0x248/0x340 [ 22.480781][ T387] ? do_notify_parent+0xa40/0xa40 [ 22.485903][ T387] ? __fpregs_load_activate+0x1e7/0x370 [ 22.491490][ T387] ? security_file_ioctl+0xb1/0xd0 [ 22.496591][ T387] ? loop_remove+0xb0/0xb0 [ 22.501028][ T387] __se_sys_ioctl+0x115/0x190 [ 22.505702][ T387] __x64_sys_ioctl+0x7b/0x90 [ 22.510275][ T387] do_syscall_64+0x34/0x70 [ 22.514706][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 22.520615][ T387] RIP: 0033:0x7f665ddafd59 [ 22.525005][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 22.544641][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 22.553072][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 22.561071][ T387] RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003 [ 22.569046][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 22.577025][ T387] R10: 00007fff71bf4fe8 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 22.585009][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 22.592989][ T387] ---[ end trace 113edac549385e7c ]--- [ 22.598485][ T387] general protection fault, probably for non-canonical address 0xdffffc000000001a: 0000 [#1] PREEMPT SMP KASAN [ 22.610168][ T387] KASAN: null-ptr-deref in range [0x00000000000000d0-0x00000000000000d7] [ 22.618554][ T387] CPU: 1 PID: 387 Comm: syz-executor417 Tainted: G W 5.10.160-syzkaller-01321-g003c389455eb #0 [ 22.630232][ T387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 22.640269][ T387] RIP: 0010:device_del+0xdf/0xf00 [ 22.645265][ T387] Code: 20 42 80 3c 28 00 74 08 48 89 df e8 6b aa df fe 4c 89 7c 24 48 41 bf d0 00 00 00 48 89 5c 24 18 4c 03 3b 4d 89 fc 49 c1 ec 03 <43> 8a 04 2c 84 c0 0f 85 0d 0d 00 00 41 0f b6 1f 89 de 83 e6 01 31 [ 22.664846][ T387] RSP: 0018:ffffc900009afb60 EFLAGS: 00010202 [ 22.670973][ T387] RAX: 1ffff11020b3621a RBX: ffff8881059b10d0 RCX: ffff8881065d3b40 [ 22.678920][ T387] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900009afae0 [ 22.686874][ T387] RBP: ffffc900009afc50 R08: dffffc0000000000 R09: fffff52000135f5d [ 22.694906][ T387] R10: fffff52000135f5d R11: 1ffff92000135f5c R12: 000000000000001a [ 22.702855][ T387] R13: dffffc0000000000 R14: ffff8881059b1108 R15: 00000000000000d0 [ 22.711239][ T387] FS: 00005555558c6300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.720146][ T387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.726711][ T387] CR2: 00007f665ddf301d CR3: 00000001061d6000 CR4: 00000000003506a0 [ 22.734670][ T387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.742674][ T387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.750626][ T387] Call Trace: [ 22.753903][ T387] ? _raw_spin_lock_irqsave+0x210/0x210 [ 22.759438][ T387] ? kernfs_name_hash+0x1f9/0x240 [ 22.764442][ T387] ? kill_device+0xd0/0xd0 [ 22.768835][ T387] del_gendisk+0xbf2/0xe20 [ 22.773227][ T387] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 22.778336][ T387] ? device_add_disk_no_queue_reg+0x30/0x30 [ 22.784213][ T387] ? __radix_tree_delete+0x2ba/0x380 [ 22.789558][ T387] ? radix_tree_delete_item+0x261/0x360 [ 22.795081][ T387] loop_remove+0x46/0xb0 [ 22.799304][ T387] loop_control_ioctl+0x67f/0x740 [ 22.804304][ T387] ? loop_remove+0xb0/0xb0 [ 22.808694][ T387] ? _raw_spin_unlock_irq+0x4e/0x70 [ 22.813865][ T387] ? ptrace_notify+0x248/0x340 [ 22.818689][ T387] ? do_notify_parent+0xa40/0xa40 [ 22.823695][ T387] ? __fpregs_load_activate+0x1e7/0x370 [ 22.829263][ T387] ? security_file_ioctl+0xb1/0xd0 [ 22.834354][ T387] ? loop_remove+0xb0/0xb0 [ 22.838742][ T387] __se_sys_ioctl+0x115/0x190 [ 22.843389][ T387] __x64_sys_ioctl+0x7b/0x90 [ 22.847953][ T387] do_syscall_64+0x34/0x70 [ 22.852349][ T387] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 22.858298][ T387] RIP: 0033:0x7f665ddafd59 [ 22.862685][ T387] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 22.882471][ T387] RSP: 002b:00007fff71bf4e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 22.890863][ T387] RAX: ffffffffffffffda RBX: 0000000000004c88 RCX: 00007f665ddafd59 [ 22.898825][ T387] RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003 [ 22.906810][ T387] RBP: 0000000000000000 R08: 00007fff71bf4fe8 R09: 00007fff71bf4fe8 [ 22.914777][ T387] R10: 00007fff71bf4fe8 R11: 0000000000000246 R12: 00007fff71bf4e5c [ 22.922724][ T387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 22.930763][ T387] Modules linked in: [ 22.937023][ T387] ---[ end trace 113edac549385e7d ]--- [ 22.942676][ T387] RIP: 0010:device_del+0xdf/0xf00 [ 22.947808][ T387] Code: 20 42 80 3c 28 00 74 08 48 89 df e8 6b aa df fe 4c 89 7c 24 48 41 bf d0 00 00 00 48 89 5c 24 18 4c 03 3b 4d 89 fc 49 c1 ec 03 <43> 8a 04 2c 84 c0 0f 85 0d 0d 00 00 41 0f b6 1f 89 de 83 e6 01 31 [ 22.968158][ T387] RSP: 0018:ffffc900009afb60 EFLAGS: 00010202 [ 22.974382][ T387] RAX: 1ffff11020b3621a RBX: ffff8881059b10d0 RCX: ffff8881065d3b40 [ 22.982421][ T387] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900009afae0 [ 22.990380][ T387] RBP: ffffc900009afc50 R08: dffffc0000000000 R09: fffff52000135f5d [ 22.998583][ T387] R10: fffff52000135f5d R11: 1ffff92000135f5c R12: 000000000000001a [ 23.006805][ T387] R13: dffffc0000000000 R14: ffff8881059b1108 R15: 00000000000000d0 [ 23.014921][ T387] FS: 00005555558c6300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 23.023875][ T387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.030531][ T387] CR2: 0000556c85228230 CR3: 00000001061d6000 CR4: 00000000003506a0 [ 23.038629][ T387] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.046636][ T387] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.054601][ T387] Kernel panic - not syncing: Fatal exception [ 23.060847][ T387] Kernel Offset: disabled [ 23.065153][ T387] Rebooting in 86400 seconds..