bridge0: port 1(bridge_slave_0) entered disabled state team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 BUG: unable to handle kernel NULL pointer dereference at 0000000000000050 PGD 0 P4D 0 bond0 (unregistering): Released all slaves Oops: 0000 [#1] SMP PTI CPU: 0 PID: 4788 Comm: syz-fuzzer Not tainted 4.19.0-rc1+ #40 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kmsan_free_page+0xec/0x2d0 mm/kmsan/kmsan_hooks.c:318 Code: 01 00 00 48 c7 00 00 00 00 00 44 39 e1 0f 8d b0 00 00 00 48 63 d1 48 8d 14 52 48 c1 e2 05 48 8b 54 13 40 48 83 c0 60 83 c1 01 <80> 7a 50 00 74 be 0f 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe RSP: 0018:ffff8801a4b1f300 EFLAGS: 00010006 RAX: ffffea0009b66868 RBX: ffffea0009b64000 RCX: 000000000000006c RDX: 0000000000000000 RSI: 0000000000000009 RDI: ffffea00004a4000 RBP: ffff8801a4b1f348 R08: 0000000000480020 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81c45470 R12: 0000000000000200 R13: ffff8801c9189d80 R14: 0000000000000009 R15: ffffea0000480000 FS: 000000c420148ae8(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000050 CR3: 0000000009c30000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: free_pages_prepare mm/page_alloc.c:994 [inline] __free_pages_ok+0x25a/0x16c0 mm/page_alloc.c:1252 free_compound_page+0x8b/0xc0 mm/page_alloc.c:572 free_transhuge_page+0x3af/0x460 mm/huge_memory.c:2733 __put_compound_page mm/swap.c:96 [inline] release_pages+0x70c/0x1650 mm/swap.c:760 free_pages_and_swap_cache+0x54b/0x570 mm/swap_state.c:319 tlb_flush_mmu_free mm/memory.c:250 [inline] zap_pte_range mm/memory.c:1406 [inline] zap_pmd_range mm/memory.c:1441 [inline] zap_pud_range mm/memory.c:1470 [inline] zap_p4d_range mm/memory.c:1491 [inline] unmap_page_range+0x37b8/0x4170 mm/memory.c:1512 unmap_single_vma+0x445/0x5e0 mm/memory.c:1557 unmap_vmas+0x251/0x380 mm/memory.c:1587 exit_mmap+0x4b7/0x940 mm/mmap.c:3093 __mmput+0x154/0x5f0 kernel/fork.c:1003 mmput+0xa7/0xe0 kernel/fork.c:1024 exit_mm+0x6dd/0x790 kernel/exit.c:546 do_exit+0xbf7/0x3890 kernel/exit.c:856 do_group_exit+0x1a0/0x350 kernel/exit.c:972 __do_sys_exit_group+0x21/0x30 kernel/exit.c:983 __se_sys_exit_group+0x14/0x20 kernel/exit.c:981 __x64_sys_exit_group+0x1d/0x20 kernel/exit.c:981 do_syscall_64+0xb8/0x100 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x47fc44 Code: Bad RIP value. RSP: 002b:000000c420155b30 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fc44 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 000000c420155b70 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000c42a9a1000 R13: 00000000008a9e3c R14: 0000000000000011 R15: 0000000000000018 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) CR2: 0000000000000050 ---[ end trace c6d1c01bd972cc18 ]--- RIP: 0010:kmsan_free_page+0xec/0x2d0 mm/kmsan/kmsan_hooks.c:318 Code: 01 00 00 48 c7 00 00 00 00 00 44 39 e1 0f 8d b0 00 00 00 48 63 d1 48 8d 14 52 48 c1 e2 05 48 8b 54 13 40 48 83 c0 60 83 c1 01 <80> 7a 50 00 74 be 0f 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe RSP: 0018:ffff8801a4b1f300 EFLAGS: 00010006 RAX: ffffea0009b66868 RBX: ffffea0009b64000 RCX: 000000000000006c RDX: 0000000000000000 RSI: 0000000000000009 RDI: ffffea00004a4000 RBP: ffff8801a4b1f348 R08: 0000000000480020 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81c45470 R12: 0000000000000200 R13: ffff8801c9189d80 R14: 0000000000000009 R15: ffffea0000480000 FS: 000000c420148ae8(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000047fc1a CR3: 0000000009c30000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600