ISOFS: Unable to identify CD-ROM format. ====================================================== WARNING: possible circular locking dependency detected 4.19.0-rc2+ #2 Not tainted ------------------------------------------------------ kswapd0/1430 is trying to acquire lock: 0000000085a9412e (jbd2_handle){++++}, at: start_this_handle+0x589/0x1260 fs/jbd2/transaction.c:383 but task is already holding lock: 00000000af99a839 (fs_reclaim){+.+.}, at: __page_frag_cache_refill mm/page_alloc.c:4476 [inline] 00000000af99a839 (fs_reclaim){+.+.}, at: __fs_reclaim_acquire+0x0/0x30 mm/page_alloc.c:4505 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (fs_reclaim){+.+.}: __fs_reclaim_acquire mm/page_alloc.c:3728 [inline] fs_reclaim_acquire.part.98+0x24/0x30 mm/page_alloc.c:3739 fs_reclaim_acquire+0x14/0x20 mm/page_alloc.c:3740 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc_trace+0x2d/0x730 mm/slab.c:3618 kmalloc include/linux/slab.h:513 [inline] kzalloc include/linux/slab.h:707 [inline] smk_fetch.part.24+0x5a/0xf0 security/smack/smack_lsm.c:273 smk_fetch security/smack/smack_lsm.c:3548 [inline] smack_d_instantiate+0x946/0xea0 security/smack/smack_lsm.c:3502 security_d_instantiate+0x5c/0xf0 security/security.c:1287 d_instantiate+0x5e/0xa0 fs/dcache.c:1870 shmem_mknod+0x189/0x1f0 mm/shmem.c:2812 vfs_mknod+0x447/0x800 fs/namei.c:3719 handle_create+0x1ff/0x7c0 drivers/base/devtmpfs.c:211 handle drivers/base/devtmpfs.c:374 [inline] devtmpfsd+0x27f/0x4c0 drivers/base/devtmpfs.c:400 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 -> #1 (&isp->smk_lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x171/0x1700 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 smack_d_instantiate+0x130/0xea0 security/smack/smack_lsm.c:3369 security_d_instantiate+0x5c/0xf0 security/security.c:1287 d_instantiate_new+0x7e/0x160 fs/dcache.c:1889 ext4_add_nondir+0x81/0x90 fs/ext4/namei.c:2415 ext4_symlink+0x761/0x1170 fs/ext4/namei.c:3162 vfs_symlink+0x37a/0x5d0 fs/namei.c:4127 do_symlinkat+0x242/0x2d0 fs/namei.c:4154 __do_sys_symlink fs/namei.c:4173 [inline] __se_sys_symlink fs/namei.c:4171 [inline] __x64_sys_symlink+0x59/0x80 fs/namei.c:4171 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (jbd2_handle){++++}: lock_acquire+0x1e4/0x4f0 kernel/locking/lockdep.c:3901 start_this_handle+0x5c0/0x1260 fs/jbd2/transaction.c:385 jbd2__journal_start+0x3c9/0x9f0 fs/jbd2/transaction.c:439 __ext4_journal_start_sb+0x18d/0x590 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:311 [inline] ext4_dirty_inode+0x62/0xc0 fs/ext4/inode.c:6021 __mark_inode_dirty+0x760/0x1300 fs/fs-writeback.c:2129 mark_inode_dirty_sync include/linux/fs.h:2072 [inline] iput+0x131/0xa00 fs/inode.c:1570 dentry_unlink_inode+0x461/0x5e0 fs/dcache.c:374 __dentry_kill+0x44c/0x7a0 fs/dcache.c:566 shrink_dentry_list+0x322/0x7c0 fs/dcache.c:1079 prune_dcache_sb+0x12f/0x1c0 fs/dcache.c:1171 super_cache_scan+0x270/0x480 fs/super.c:102 do_shrink_slab+0x4ba/0xbb0 mm/vmscan.c:536 shrink_slab+0x389/0x8c0 mm/vmscan.c:686 shrink_node+0x429/0x16a0 mm/vmscan.c:2735 kswapd_shrink_node mm/vmscan.c:3457 [inline] balance_pgdat+0x7ca/0x1010 mm/vmscan.c:3567 kswapd+0x82f/0x11e0 mm/vmscan.c:3789 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 other info that might help us debug this: Chain exists of: jbd2_handle --> &isp->smk_lock --> fs_reclaim Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(fs_reclaim); lock(&isp->smk_lock); lock(fs_reclaim); lock(jbd2_handle); *** DEADLOCK *** 3 locks held by kswapd0/1430: #0: 00000000af99a839 (fs_reclaim){+.+.}, at: __page_frag_cache_refill mm/page_alloc.c:4476 [inline] #0: 00000000af99a839 (fs_reclaim){+.+.}, at: __fs_reclaim_acquire+0x0/0x30 mm/page_alloc.c:4505 #1: 000000003e78ad93 (shrinker_rwsem){++++}, at: shrink_slab+0x207/0x8c0 mm/vmscan.c:676 #2: 00000000e742ec1a (&type->s_umount_key#28){++++}, at: trylock_super+0x22/0x110 fs/super.c:412 stack backtrace: CPU: 1 PID: 1430 Comm: kswapd0 Not tainted 4.19.0-rc2+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 print_circular_bug.isra.34.cold.55+0x1bd/0x27d kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1862 [inline] check_prevs_add kernel/locking/lockdep.c:1975 [inline] validate_chain kernel/locking/lockdep.c:2416 [inline] __lock_acquire+0x3449/0x5020 kernel/locking/lockdep.c:3412 lock_acquire+0x1e4/0x4f0 kernel/locking/lockdep.c:3901 start_this_handle+0x5c0/0x1260 fs/jbd2/transaction.c:385 jbd2__journal_start+0x3c9/0x9f0 fs/jbd2/transaction.c:439 __ext4_journal_start_sb+0x18d/0x590 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:311 [inline] ext4_dirty_inode+0x62/0xc0 fs/ext4/inode.c:6021 __mark_inode_dirty+0x760/0x1300 fs/fs-writeback.c:2129 mark_inode_dirty_sync include/linux/fs.h:2072 [inline] iput+0x131/0xa00 fs/inode.c:1570 dentry_unlink_inode+0x461/0x5e0 fs/dcache.c:374 __dentry_kill+0x44c/0x7a0 fs/dcache.c:566 shrink_dentry_list+0x322/0x7c0 fs/dcache.c:1079 prune_dcache_sb+0x12f/0x1c0 fs/dcache.c:1171 super_cache_scan+0x270/0x480 fs/super.c:102 do_shrink_slab+0x4ba/0xbb0 mm/vmscan.c:536 shrink_slab+0x389/0x8c0 mm/vmscan.c:686 shrink_node+0x429/0x16a0 mm/vmscan.c:2735 kswapd_shrink_node mm/vmscan.c:3457 [inline] balance_pgdat+0x7ca/0x1010 mm/vmscan.c:3567 kswapd+0x82f/0x11e0 mm/vmscan.c:3789 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option " esize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option " esize=" ISOFS: Unable to identify CD-ROM format. FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 323 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 handle_userfault.cold.33+0x43/0x52 fs/userfaultfd.c:432 do_anonymous_page mm/memory.c:3164 [inline] handle_pte_fault mm/memory.c:3981 [inline] __handle_mm_fault+0x389e/0x4350 mm/memory.c:4107 handle_mm_fault+0x53e/0xc80 mm/memory.c:4144 __do_page_fault+0x620/0xe50 arch/x86/mm/fault.c:1395 do_page_fault+0xf6/0x7a4 arch/x86/mm/fault.c:1470 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0010:copy_user_generic_unrolled+0x86/0xc0 arch/x86/lib/copy_user_64.S:65 Code: 4c 8b 5e 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 <4c> 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 RSP: 0018:ffff880164f67700 EFLAGS: 00010203 RAX: 0000000000000004 RBX: 000000000000000c RCX: 0000000000000001 RDX: 0000000000000004 RSI: 0000000020013ff4 RDI: ffff8801c49a14a0 RBP: ffff880164f67738 R08: ffffed0038934296 R09: ffffed0038934294 R10: ffffed0038934295 R11: 0000000000000003 R12: 0000000020014000 R13: 0000000020013ff4 R14: ffff8801c49a14a0 R15: 00007ffffffff000 copy_from_user include/linux/uaccess.h:147 [inline] ip_options_get_from_user+0x8d/0xf0 net/ipv4/ip_options.c:537 do_ip_setsockopt.isra.13+0x1ba6/0x3e70 net/ipv4/ip_sockglue.c:655 ip_setsockopt+0x4c/0x140 net/ipv4/ip_sockglue.c:1249 tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3062 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3038 __sys_setsockopt+0x1c5/0x3b0 net/socket.c:1900 __do_sys_setsockopt net/socket.c:1911 [inline] __se_sys_setsockopt net/socket.c:1908 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1908 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457099 Code: fd b4 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 b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f20d1b5ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f20d1b5f6d4 RCX: 0000000000457099 RDX: 0000000000000004 RSI: 0900000000000000 RDI: 0000000000000006 RBP: 00000000009300a0 R08: 000000000000000c R09: 0000000000000000 R10: 0000000020013ff4 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d58c8 R14: 00000000004c982a R15: 0000000000000000 ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "%esize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "%esize=" ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "xesize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "xesize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 480 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 handle_userfault.cold.33+0x43/0x52 fs/userfaultfd.c:432 do_anonymous_page mm/memory.c:3164 [inline] handle_pte_fault mm/memory.c:3981 [inline] __handle_mm_fault+0x389e/0x4350 mm/memory.c:4107 handle_mm_fault+0x53e/0xc80 mm/memory.c:4144 ISOFS: Unable to identify CD-ROM format. __do_page_fault+0x620/0xe50 arch/x86/mm/fault.c:1395 do_page_fault+0xf6/0x7a4 arch/x86/mm/fault.c:1470 ISOFS: Unable to identify CD-ROM format. page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0010:copy_user_generic_unrolled+0x86/0xc0 arch/x86/lib/copy_user_64.S:65 Code: 4c 8b 5e 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 <4c> 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 RSP: 0018:ffff880166f67700 EFLAGS: 00010203 RAX: 0000000000000004 RBX: 000000000000000c RCX: 0000000000000001 RDX: 0000000000000004 RSI: 0000000020013ff4 RDI: ffff8801c04690a0 RBP: ffff880166f67738 R08: ffffed003808d216 R09: ffffed003808d214 R10: ffffed003808d215 R11: 0000000000000003 R12: 0000000020014000 R13: 0000000020013ff4 R14: ffff8801c04690a0 R15: 00007ffffffff000 copy_from_user include/linux/uaccess.h:147 [inline] ip_options_get_from_user+0x8d/0xf0 net/ipv4/ip_options.c:537 do_ip_setsockopt.isra.13+0x1ba6/0x3e70 net/ipv4/ip_sockglue.c:655 ISOFS: Unable to identify CD-ROM format. ip_setsockopt+0x4c/0x140 net/ipv4/ip_sockglue.c:1249 tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3062 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3038 __sys_setsockopt+0x1c5/0x3b0 net/socket.c:1900 __do_sys_setsockopt net/socket.c:1911 [inline] __se_sys_setsockopt net/socket.c:1908 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1908 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457099 Code: fd b4 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 b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f20d1b5ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f20d1b5f6d4 RCX: 0000000000457099 RDX: 0000000000000004 RSI: 0200000000000000 RDI: 0000000000000006 RBP: 00000000009300a0 R08: 000000000000000c R09: 0000000000000000 R10: 0000000020013ff4 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d58c8 R14: 00000000004c982a R15: 0000000000000000 ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "r%size=" REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "r%size=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "rxsize=" ISOFS: Unable to identify CD-ROM format. FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 618 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 handle_userfault.cold.33+0x43/0x52 fs/userfaultfd.c:432 do_anonymous_page mm/memory.c:3164 [inline] handle_pte_fault mm/memory.c:3981 [inline] __handle_mm_fault+0x389e/0x4350 mm/memory.c:4107 ISOFS: Unable to identify CD-ROM format. handle_mm_fault+0x53e/0xc80 mm/memory.c:4144 __do_page_fault+0x620/0xe50 arch/x86/mm/fault.c:1395 ISOFS: Unable to identify CD-ROM format. do_page_fault+0xf6/0x7a4 arch/x86/mm/fault.c:1470 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0010:copy_user_generic_unrolled+0x86/0xc0 arch/x86/lib/copy_user_64.S:65 Code: 4c 8b 5e 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 <4c> 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 RSP: 0018:ffff880166f87700 EFLAGS: 00010203 RAX: 0000000000000004 RBX: 000000000000000c RCX: 0000000000000001 RDX: 0000000000000004 RSI: 0000000020013ff4 RDI: ffff8800136c75a0 RBP: ffff880166f87738 R08: ffffed00026d8eb6 R09: ffffed00026d8eb4 R10: ffffed00026d8eb5 R11: 0000000000000003 R12: 0000000020014000 R13: 0000000020013ff4 R14: ffff8800136c75a0 R15: 00007ffffffff000 copy_from_user include/linux/uaccess.h:147 [inline] ip_options_get_from_user+0x8d/0xf0 net/ipv4/ip_options.c:537 do_ip_setsockopt.isra.13+0x1ba6/0x3e70 net/ipv4/ip_sockglue.c:655 ip_setsockopt+0x4c/0x140 net/ipv4/ip_sockglue.c:1249 tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3062 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3038 __sys_setsockopt+0x1c5/0x3b0 net/socket.c:1900 ISOFS: Unable to identify CD-ROM format. __do_sys_setsockopt net/socket.c:1911 [inline] __se_sys_setsockopt net/socket.c:1908 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1908 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457099 Code: fd b4 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 b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f20d1b5ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f20d1b5f6d4 RCX: 0000000000457099 RDX: 0000000000000004 RSI: 6000000000000000 RDI: 0000000000000006 RBP: 00000000009300a0 R08: 000000000000000c R09: 0000000000000000 R10: 0000000020013ff4 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d58c8 R14: 00000000004c982a R15: 0000000000000000 ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "rxsize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. isofs_fill_super: bread failed, dev=loop6, iso_blknum=32, block=64 ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "r size=" ISOFS: Unable to identify CD-ROM format. FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 728 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 handle_userfault.cold.33+0x43/0x52 fs/userfaultfd.c:432 ISOFS: Unable to identify CD-ROM format. do_anonymous_page mm/memory.c:3164 [inline] handle_pte_fault mm/memory.c:3981 [inline] __handle_mm_fault+0x389e/0x4350 mm/memory.c:4107 handle_mm_fault+0x53e/0xc80 mm/memory.c:4144 __do_page_fault+0x620/0xe50 arch/x86/mm/fault.c:1395 do_page_fault+0xf6/0x7a4 arch/x86/mm/fault.c:1470 ISOFS: Unable to identify CD-ROM format. page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0010:copy_user_generic_unrolled+0x86/0xc0 arch/x86/lib/copy_user_64.S:65 Code: 4c 8b 5e 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 <4c> 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 RSP: 0018:ffff88015ba57700 EFLAGS: 00010203 RAX: 0000000000000004 RBX: 000000000000000c RCX: 0000000000000001 RDX: 0000000000000004 RSI: 0000000020013ff4 RDI: ffff8801d7f72220 RBP: ffff88015ba57738 R08: ffffed003afee446 R09: ffffed003afee444 R10: ffffed003afee445 R11: 0000000000000003 R12: 0000000020014000 R13: 0000000020013ff4 R14: ffff8801d7f72220 R15: 00007ffffffff000 copy_from_user include/linux/uaccess.h:147 [inline] ip_options_get_from_user+0x8d/0xf0 net/ipv4/ip_options.c:537 do_ip_setsockopt.isra.13+0x1ba6/0x3e70 net/ipv4/ip_sockglue.c:655 ip_setsockopt+0x4c/0x140 net/ipv4/ip_sockglue.c:1249 tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3062 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3038 __sys_setsockopt+0x1c5/0x3b0 net/socket.c:1900 __do_sys_setsockopt net/socket.c:1911 [inline] __se_sys_setsockopt net/socket.c:1908 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1908 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457099 ISOFS: Unable to identify CD-ROM format. Code: fd b4 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 b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f20d1b5ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f20d1b5f6d4 RCX: 0000000000457099 RDX: 0000000000000004 RSI: ffffffff00000000 RDI: 0000000000000006 RBP: 00000000009300a0 R08: 000000000000000c R09: 0000000000000000 R10: 0000000020013ff4 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d58c8 R14: 00000000004c982a R15: 0000000000000000 ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "r size=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "reaize=" ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "reaize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "rezize=" REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "rezize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 938 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 handle_userfault.cold.33+0x43/0x52 fs/userfaultfd.c:432 do_anonymous_page mm/memory.c:3164 [inline] handle_pte_fault mm/memory.c:3981 [inline] __handle_mm_fault+0x389e/0x4350 mm/memory.c:4107 handle_mm_fault+0x53e/0xc80 mm/memory.c:4144 __do_page_fault+0x620/0xe50 arch/x86/mm/fault.c:1395 do_page_fault+0xf6/0x7a4 arch/x86/mm/fault.c:1470 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1161 RIP: 0010:copy_user_generic_unrolled+0x86/0xc0 arch/x86/lib/copy_user_64.S:65 Code: 4c 8b 5e 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 <4c> 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 RSP: 0018:ffff88001c8ff700 EFLAGS: 00010203 RAX: 0000000000000004 RBX: 000000000000000c RCX: 0000000000000001 RDX: 0000000000000004 RSI: 0000000020013ff4 RDI: ffff880164d4e1a0 RBP: ffff88001c8ff738 R08: ffffed002c9a9c36 R09: ffffed002c9a9c34 R10: ffffed002c9a9c35 R11: 0000000000000003 R12: 0000000020014000 R13: 0000000020013ff4 R14: ffff880164d4e1a0 R15: 00007ffffffff000 copy_from_user include/linux/uaccess.h:147 [inline] ip_options_get_from_user+0x8d/0xf0 net/ipv4/ip_options.c:537 do_ip_setsockopt.isra.13+0x1ba6/0x3e70 net/ipv4/ip_sockglue.c:655 ip_setsockopt+0x4c/0x140 net/ipv4/ip_sockglue.c:1249 tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3062 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3038 __sys_setsockopt+0x1c5/0x3b0 net/socket.c:1900 __do_sys_setsockopt net/socket.c:1911 [inline] __se_sys_setsockopt net/socket.c:1908 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1908 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457099 Code: fd b4 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 b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f20d1b5ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f20d1b5f6d4 RCX: 0000000000457099 RDX: 0000000000000004 RSI: 2000000000000000 RDI: 0000000000000006 RBP: 00000000009300a0 R08: 000000000000000c R09: 0000000000000000 R10: 0000000020013ff4 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d58c8 R14: 00000000004c982a R15: 0000000000000000 ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "rexize=" ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "rexize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "re-ize=" ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "re-ize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "reuize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "re ize=" REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "re ize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "rehize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "rehize=" ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "reyize=" ISOFS: Unable to identify CD-ROM format. REISERFS warning (device loop4): super-6502 reiserfs_getopt: unknown mount option "reyize=" ISOFS: Unable to identify CD-ROM format. FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 1343 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #2